Filtering assembly and filter

Abstract

The utility model relates to the technical field of filters, and provides a filtering assembly and a filter. The filtering assembly comprises a shell and a nanocrystalline magnetic ring; the shell comprises a metal outer shell and a plastic inner shell, an annular first containing groove is formed between the metal outer shell and the plastic inner shell, the nanocrystalline magnetic ring is arranged in the first containing groove, the first containing groove is filled with bonding glue, and anti-shielding notches used for preventing magnetic shielding of the nanocrystalline magnetic ring are formed in the two sides, in the first direction, of the metal outer shell. According to the filtering assembly provided by the utility model, the housing is the metal housing, and the two sides of the metal housing along the first direction are provided with the anti-shielding gaps used for preventing the nanocrystalline magnetic ring from being magnetically shielded, so that the nanocrystalline magnetic ring can be normally operated, and the anti-shielding effect of the nanocrystalline magnetic ring is improved. According to the nanocrystalline magnetic ring, heat generated by the nanocrystalline magnetic ring can be conducted to the outside through the metal shell, the heat dissipation efficiency and the heat dissipation effect are greatly improved, the performance of the nanocrystalline magnetic ring in the working process can be improved, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and in particular to a filter component and filter. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the market has increasingly higher requirements for products in terms of environmental protection, energy saving, power density, and price cost, and the requirements for power inductors are also gradually increasing.

[0003] Currently, high-performance filter cores are gradually shifting from traditional ferrite or silicon steel sheets to nanocrystalline magnetic rings. These nanocrystalline magnetic rings and other electronic components are encapsulated in a plastic housing using thermally conductive materials such as silicone. However, due to the high temperature at the nanocrystalline magnetic ring location, the encapsulating adhesive requires high temperature resistance. Existing plastic housings cannot effectively dissipate the heat generated by the nanocrystalline magnetic ring, leading to performance degradation and reduced lifespan. Furthermore, the connection stability between the existing nanocrystalline magnetic ring and the plastic housing is poor, affecting filter performance. Utility Model Content

[0004] This invention provides a filtering component and filter to solve the problem that existing plastic housings cannot dissipate the heat generated by the nanocrystalline magnetic ring in a timely manner, leading to performance degradation of the nanocrystalline magnetic ring and affecting its service life.

[0005] This utility model provides a filtering component, including: a housing and a nanocrystalline magnetic ring. The housing includes a metal outer shell and a plastic inner shell. The metal outer shell is disposed around the plastic inner shell, and an annular first receiving groove is formed between the metal outer shell and the plastic inner shell. The nanocrystalline magnetic ring is disposed in the first receiving groove, which is filled with adhesive. The metal outer shell has anti-shielding notches on both sides along a first direction to prevent magnetic shielding of the nanocrystalline magnetic ring.

[0006] According to the filtering component provided by this utility model, the housing further includes two plastic protective shells, which are respectively disposed at the anti-shielding notch, and the first receiving groove is formed between the metal outer shell, the plastic inner shell and the two plastic protective shells.

[0007] According to the filtering component provided by this utility model, the upper edge of the anti-shielding notch is provided with a first connecting rib, the plastic protective shell is provided with a second receiving groove, the first connecting rib is located in the second receiving groove, and the second receiving groove is filled with bonding adhesive.

[0008] According to the filter assembly provided by this utility model, the metal shell is provided with connecting portions on both sides along the second direction, and the connecting portions are provided with second connecting ribs on both sides along the first direction. The second connecting ribs are connected to the first connecting ribs, and the height of the second connecting ribs is greater than that of the first connecting ribs. The second connecting ribs are located in the second receiving groove.

[0009] According to the filter assembly provided by this utility model, the first connecting rib and the second connecting rib are provided with through holes so that the adhesive can form an adhesive structure through the through holes.

[0010] According to the filter assembly provided by this utility model, the thickness of the first connecting rib and the second connecting rib is less than the width of the second receiving groove, so as to form a potting gap between the outer wall of the first connecting rib and the second connecting rib and the inner wall of the second receiving groove.

[0011] According to the filter assembly provided by this utility model, the inner wall of the connecting part is provided with a frosted surface for increasing the bonding strength.

[0012] According to the filtering component provided by this utility model, both the first connecting rib and the second connecting rib are integrally formed with the metal shell.

[0013] According to the filter assembly provided by this utility model, the plastic inner shell includes a main body and a bottom plate. The inner side of the bottom plate is connected to the main body, and the outer side of the bottom plate is connected to the metal outer shell to seal the bottom of the first receiving groove.

[0014] Another aspect of this utility model provides a filter, including a plastic-coated integral component and a filtering component as described in any of the preceding claims, wherein the filtering component is connected to the plastic-coated integral component.

[0015] The filtering component provided by this utility model, by setting the housing as a metal shell and providing anti-shielding gaps on both sides of the metal shell along the first direction to prevent magnetic shielding of the nanocrystalline magnetic ring, can conduct the heat generated by the nanocrystalline magnetic ring to the outside through the metal shell, under the premise that the nanocrystalline magnetic ring can operate normally (without being magnetically shielded by the metal shell), greatly improving the heat dissipation efficiency and effect, improving the performance of the nanocrystalline magnetic ring during operation, and extending its service life.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is one of the schematic diagrams of the filtering component provided in this embodiment of the utility model.

[0019] Figure 2 This is the second schematic diagram of the filtering component provided in this embodiment of the utility model (with a plastic protective shell hidden).

[0020] Figure 3 This is a schematic diagram of the metal casing in the filter assembly provided in this embodiment of the utility model.

[0021] Figure 4 This is a schematic diagram of the plastic inner shell in the filter assembly provided in this embodiment of the utility model.

[0022] Figure 5 This is a schematic diagram of the plastic protective shell in the filter assembly provided in this embodiment of the utility model.

[0023] Figure 6 This is a schematic diagram of the filter provided in an embodiment of the present invention.

[0024] Figure label:

[0025] 10. Shell; 110. Metal outer shell; 111. Shielding notch; 112. First connecting rib; 113. Connecting part; 114. Second connecting rib; 115. Through hole; 116. Frosted surface; 120. Plastic inner shell; 121. Main body; 122. Base plate; 130. Plastic protective shell; 131. Second receiving groove; 20. Nanocrystalline magnetic ring; 30. First receiving groove; 40. Plastic-coated integrated part. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances.

[0029] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0031] The following is combined Figures 1 to 6 This invention describes the filtering component and filter provided by this utility model.

[0032] See Figures 1 to 3 As shown, the filtering component provided in this embodiment of the present invention includes: a housing 10 and a nanocrystalline magnetic ring 20; the housing 10 includes a metal outer shell 110 and a plastic inner shell 120, the metal outer shell 110 is disposed on the periphery of the plastic inner shell 120, and an annular first receiving groove 30 is formed between the metal outer shell 110 and the plastic inner shell 120, the nanocrystalline magnetic ring 20 is disposed in the first receiving groove 30, the first receiving groove 30 is filled with adhesive, and the metal outer shell 110 is provided with anti-shielding notches 111 on both sides along the first direction to prevent magnetic shielding of the nanocrystalline magnetic ring 20.

[0033] It should be noted that the aforementioned "first direction" specifically refers to Figure 2 The arrow shown indicates the length direction of the nanocrystalline magnetic ring 20.

[0034] The filtering component provided by this utility model, by setting the housing 10 as a metal shell 110, and providing anti-shielding gaps 111 on both sides of the metal shell 110 along the first direction to prevent magnetic shielding of the nanocrystalline magnetic ring 20, can conduct the heat generated by the nanocrystalline magnetic ring 20 to the outside through the metal shell 110, under the premise that the nanocrystalline magnetic ring 20 can operate normally (without being magnetically shielded by the metal shell 110), greatly improving the heat dissipation efficiency and effect, improving the performance of the nanocrystalline magnetic ring 20 during operation, and extending its service life.

[0035] Specifically, the adhesive serves two purposes: firstly, it secures the nanocrystalline magnetic ring 20 within the first receiving groove 30, and secondly, it facilitates heat conduction. The heat generated by the nanocrystalline magnetic ring 20 during operation is first transferred to the adhesive, which then transfers the heat to the metal casing 110, and finally dissipates the heat to the external environment, thus cooling the nanocrystalline magnetic ring 20. Because the metal casing 110 has significantly improved thermal conductivity compared to traditional plastic casings, there is no need for air cooling or liquid cooling to cool the nanocrystalline magnetic ring 20, reducing product space requirements and improving product performance.

[0036] The metal casing 110 is made of a metal material with good thermal conductivity, such as aluminum alloy or copper. Thermally conductive silicone can be used as the bonding adhesive. During assembly, the nanocrystalline magnetic ring 20 is pre-fixed in the first receiving groove 30, and then the nanocrystalline magnetic ring 20 is fixed in the first receiving groove 30 through a potting process. After potting, the bonding adhesive fills the gap between the nanocrystalline magnetic ring 20 and the casing 10, thereby achieving both fixation and thermal conductivity of the nanocrystalline magnetic ring 20 through the bonding adhesive.

[0037] The metal outer shell 110, the plastic inner shell 120, and the nanocrystalline magnetic ring 20 all have annular cross-sections. The plastic inner shell 120, the nanocrystalline magnetic ring 20, and the metal outer shell 110 are arranged sequentially from the inside out, with an annular first receiving groove 30 formed between the plastic inner shell 120 and the metal outer shell 110, which is adapted to fit the nanocrystalline magnetic ring 20. Gaps are provided between the nanocrystalline magnetic ring 20 and both the plastic inner shell 120 and the metal outer shell 110 for filling with adhesive.

[0038] See Figure 1 and Figure 2 As shown, according to some embodiments of the present invention, the housing 10 further includes two plastic protective shells 130, which are respectively disposed at the shielding notch 111, and a first receiving groove 30 is formed between the metal outer shell 110, the plastic inner shell 120 and the two plastic protective shells 130.

[0039] By providing plastic protective shells 130 at the two shielding gaps 111 of the two metal casings 110, the exposed nanocrystalline magnetic rings 20 at the shielding gaps 111 can be protected from external contact. Furthermore, the plastic protective shells 130 do not shield the nanocrystalline magnetic rings 20 and can increase the bonding area between the nanocrystalline magnetic rings 20 and the casings 10, thereby improving their stability.

[0040] Specifically, the shielding notch 111 between the plastic protective shell 130 and the metal outer shell 110 can be connected using common methods in the prior art, such as snap-fit ​​or threaded connection.

[0041] See Figure 2 and Figure 5 As shown, according to some embodiments of the present invention, the upper edge of the shielding notch 111 is provided with a first connecting rib 112, the plastic shell 130 is provided with a second receiving groove 131, the first connecting rib 112 is located in the second receiving groove 131, and the second receiving groove 131 is filled with bonding adhesive.

[0042] By providing a first connecting rib 112 along the upper edge of the shielding notch 111 and a second receiving groove 131 in the plastic housing 130, the plastic housing 130 can be directly fastened to the first connecting rib 112 during assembly, and the second receiving groove 131 can be filled with glue at the same time as the first receiving groove 30, thereby simplifying the assembly process of the filter component.

[0043] See Figure 2 , Figure 3 and Figure 5As shown, according to some embodiments of the present invention, the metal shell 110 is provided with connecting portions 113 on both sides along the second direction, and the connecting portions 113 are provided with second connecting ribs 114 on both sides along the first direction. The second connecting ribs 114 are connected to the first connecting ribs 112, and the height of the second connecting ribs 114 is greater than that of the first connecting ribs 112. The second connecting ribs 114 are located in the second receiving groove 131.

[0044] It should be noted that the aforementioned "second direction" specifically refers to Figure 3 The direction of the arrow in the figure is the width direction of the nanocrystalline magnetic ring 20.

[0045] By providing second connecting ribs 114 on both sides of the connecting portion 113 of the metal casing 110, the connection stability between the plastic casing 130 and the metal casing 110 can be enhanced by the second connecting ribs 114.

[0046] Specifically, since the height of the second connecting rib 114 is greater than that of the first connecting rib 112, and the second connecting rib 114 is located on both sides of the connecting part 113 of the metal shell 110, after the glue is applied, the second connecting rib 114 can strengthen the connection between the two ends of the plastic shell 130, thereby improving the stability of the connection between the plastic shell 130 and the metal shell 110.

[0047] See Figure 2 and Figure 3 As shown, according to some embodiments of the present invention, the first connecting rib 112 and the second connecting rib 114 are provided with through holes 115 so that the adhesive can pass through the through holes 115 to form an adhesive structure.

[0048] By providing through holes 115 on the first connecting rib 112 and the second connecting rib 114, after the glue is poured, the solidified adhesive can form an adhesive structure at the through hole 115 to lock the plastic shell 130 in its current position. For example, when the through hole 115 is a circular hole, the adhesive structure is a corresponding cylindrical structure with a thickness equal to the depth of the through hole 115.

[0049] It should be noted that the number of through holes 115 on the first connecting rib 112 and the second connecting rib 114 is at least one. The shape of the through hole 115 can be a regular shape such as a circle, square, or strip, or it can be an irregular shape selected according to actual needs. This utility model does not make any specific limitation in this regard.

[0050] The number of through holes 115 can be set according to the dimensions of the first connecting rib 112 and the second connecting rib 114, as well as the shape of the through holes 115. For example, when the dimensions of the first connecting rib 112 and the second connecting rib 114 are large (e.g., long in length), multiple through holes 115 can be provided at intervals along the length direction of the first connecting rib 112 and the second connecting rib 114. When the through hole 115 is strip-shaped, only a single through hole 115 can be provided on the first connecting rib 112 and the second connecting rib 114.

[0051] As an example, in this embodiment, the through hole 115 is a circular through hole 115. The first connecting rib 112 is provided with a plurality of circular through holes 115 at intervals along its length direction, and the second connecting rib 114 is provided with a single through hole 115 due to its smaller size.

[0052] Furthermore, the hole shapes of the through holes 115 on the first connecting rib 112 can be the same or different. For example, the through holes 115 on the first connecting rib 112 and the second connecting rib 114 can both be circular through holes 115. For example, the through holes 115 on the first connecting rib 112 are circular through holes 115, while the through holes 115 on the second connecting rib 114 are strip-shaped through holes 115.

[0053] According to some embodiments of the present invention, the thickness of the first connecting rib 112 and the second connecting rib 114 is less than the width of the second receiving groove 131, so as to form a glue-filling gap between the outer wall of the first connecting rib 112 and the second connecting rib 114 and the inner wall of the second receiving groove 131.

[0054] By setting the thickness of both the first connecting rib 112 and the second connecting rib 114 to be less than the width of the second receiving groove 131, a glue-filling gap can be formed between the outer walls of the first connecting rib 112 and the second connecting rib 114 and the inner wall of the second receiving groove 131. During glue filling, the adhesive can fully enter between the outer walls of the first connecting rib 112 and the second connecting rib 114 and the inner wall of the second receiving groove 131, thereby providing a stable connection for the protective shell.

[0055] Specifically, a limiting structure can be provided in the second receiving groove 131 (such as a limiting slot at the bottom of the second receiving groove 131, or a limiting protrusion on the side wall of the second receiving groove 131). The limiting structure is used to limit the first connecting rib 112 and the second connecting rib 114 to the center position of the second receiving groove 131, so as to form a uniform gap on both sides for glue pouring.

[0056] See Figure 3 As shown, according to some embodiments of the present invention, the inner wall of the connecting part 113 is provided with a frosted surface 116 for increasing the bonding strength.

[0057] By providing a frosted surface 116 on the inner wall of the connecting portion 113, the frosted surface 116 can improve the bonding strength between the adhesive and the metal shell 110 after the adhesive is poured. Specifically, the frosted surface 116 is a micro-uneven structure formed on the metal surface through physical processing (such as sandpaper polishing, sandblasting, etc.). This uneven structure can effectively increase the contact area between the adhesive surfaces. A larger contact area means that the adhesive can better penetrate and adhere to the metal surface, thereby improving the bonding strength.

[0058] It should be noted that the inner wall of the connecting part 113 specifically refers to the side wall of the connecting part 113 facing the nanocrystalline magnetic ring 20.

[0059] See Figure 3 As shown, according to some embodiments of the present invention, the first connecting rib 112 and the second connecting rib 114 are both integrally formed with the metal shell 110.

[0060] By integrating the first connecting rib 112 and the second connecting rib 114 with the metal shell 110, the overall strength and rigidity of the metal shell 110 can be effectively improved, and the joint gaps that may occur between the connecting parts 113 can be avoided.

[0061] Specifically, both the first connecting rib 112 and the second connecting rib 114 can be manufactured by stamping and flattening.

[0062] See Figure 3 As shown, according to some embodiments of the present invention, the plastic inner shell 120 includes a main body 121 and a bottom plate 122. The inner side of the bottom plate 122 is connected to the main body 121, and the outer side of the bottom plate 122 is connected to the metal outer shell 110 to seal the bottom of the first receiving groove 30.

[0063] By providing a bottom plate 122 at the bottom of the plastic inner shell 120, the bottom of the first receiving groove 30 can be sealed to prevent the adhesive from overflowing from the bottom of the first receiving groove 30 and to prevent external debris from entering the first receiving groove 30.

[0064] The filter provided by this utility model is described below. The filter described below can be referred to in correspondence with the filter component described above.

[0065] See Figure 6 As shown, the filter provided in this embodiment of the present invention includes a plastic-coated integral part 40 and a filtering component as described in any of the above embodiments, wherein the filtering component is connected to the plastic-coated integral part 40.

[0066] The filter provided by this utility model, due to the use of the above-mentioned filtering components, can conduct the heat generated by the nanocrystalline magnetic ring 20 to the outside through the metal shell 110, under the premise that the nanocrystalline magnetic ring 20 can operate normally (without being magnetically shielded by the metal shell 110), which greatly improves the heat dissipation efficiency and heat dissipation effect, improves the performance of the nanocrystalline magnetic ring 20 during operation, and extends its service life.

[0067] It should be noted that the integrated plastic-coated component 40 of the filter refers to a structural design that combines the core components of the filter with the outer plastic shell as a single unit. By encasing the filter in a plastic shell, mechanical protection is provided to prevent the influence of the external environment, while also effectively isolating electromagnetic interference and improving electrical performance. This design also features waterproofing, dustproofing, and shock absorption, while simplifying the manufacturing process and reducing costs.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A filtering component, characterized in that, include: The housing includes a metal outer shell and a plastic inner shell. The metal outer shell is disposed around the plastic inner shell, and an annular first receiving groove is formed between the metal outer shell and the plastic inner shell. The nanocrystalline magnetic ring is disposed in the first receiving groove, which is filled with adhesive. The metal outer shell has anti-shielding notches on both sides along a first direction to prevent magnetic shielding of the nanocrystalline magnetic ring.

2. The filtering component according to claim 1, characterized in that, The housing also includes two plastic protective shells, which are respectively disposed at the shielding gap. The first receiving groove is formed between the metal outer shell, the plastic inner shell, and the two plastic protective shells.

3. The filtering component according to claim 2, characterized in that, The upper edge of the shielding notch is provided with a first connecting rib, and the plastic shell is provided with a second receiving groove. The first connecting rib is located in the second receiving groove, and the second receiving groove is filled with bonding adhesive.

4. The filtering component according to claim 3, characterized in that, The metal casing is provided with connecting portions on both sides along the second direction, and the connecting portions are provided with second connecting ribs on both sides along the first direction. The second connecting ribs are connected to the first connecting ribs, and the height of the second connecting ribs is greater than that of the first connecting ribs. The second connecting ribs are located in the second receiving groove.

5. The filtering component according to claim 4, characterized in that, The first connecting rib and the second connecting rib are provided with through holes so that the adhesive can pass through the through holes to form an adhesive structure.

6. The filtering component according to claim 4, characterized in that, The thickness of both the first connecting rib and the second connecting rib is less than the width of the second receiving groove, so as to form a glue-filling gap between the outer wall of the first connecting rib and the second connecting rib and the inner wall of the second receiving groove.

7. The filtering component according to claim 4, characterized in that, The inner wall of the connector is provided with a frosted surface to increase the bonding strength.

8. The filtering component according to claim 4, characterized in that, Both the first connecting rib and the second connecting rib are integrally formed with the metal shell.

9. The filtering component according to any one of claims 1 to 8, characterized in that, The plastic inner shell includes a main body and a bottom plate. The inner side of the bottom plate is connected to the main body, and the outer side of the bottom plate is connected to the metal outer shell to seal the bottom of the first receiving groove.

10. A filter, characterized in that, It includes a plastic-coated integral component and a filtering component as described in any one of claims 1 to 9, wherein the filtering component is connected to the plastic-coated integral component.

Images