Sealed nanocrystalline magnetic core shell

Abstract

The utility model belongs to the technical field of magnetic core shells, and discloses a sealed nanocrystalline magnetic core shell which comprises a shell body, the shell body is provided with a lower cover and an upper cover, the lower cover is provided with a containing cavity with an upper side opening, the upper cover covers and is connected to the upper side opening of the lower cover in a clamped mode, and a magnetic core is loaded in the containing cavity of the lower cover. A first annular clamping protrusion facing upwards extends from the outer circumferential ring edge of an opening in the upper side of the lower cover, a second annular clamping protrusion facing upwards extends from the inner circumferential ring edge of the opening in the upper side of the lower cover, and a first annular groove corresponding to the first annular clamping protrusion is formed in the bottom of the upper cover. A second annular groove corresponding to the second annular clamping bulge is formed in the bottom of the upper cover; when the upper cover is assembled, the first annular groove and the second annular groove are oppositely inserted into the first annular clamping protrusion and the second annular clamping protrusion of the lower cover respectively, and the first annular groove and the second annular groove of the upper cover are bonded with the lower cover through glue. According to the utility model, the magnetic core can be fixed in the shell, so that the magnetic core is prevented from loosening or falling off after long-time use.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnetic core shells, and more specifically relates to a sealed nanocrystalline magnetic core shell. Background Art

[0002] Nanocrystalline magnetic cores, with their exceptional high permeability, have been widely used in various fields, including EMC common-mode filtering and transformers. In recent years, with the booming new energy vehicle industry, nanocrystalline cores, due to their unique performance advantages, have been widely used in the electronic control systems of new energy vehicles. However, nanocrystalline cores are relatively fragile and easily affected and damaged by the external environment. Therefore, they are often protected by a casing to ensure stable and reliable operation.

[0003] Currently, the outer shell design of nanocrystalline magnetic cores is relatively simple, and the fit between the upper and lower covers is also relatively basic. Typically, the upper and lower covers and the core are fixed together using silicone adhesive. While this fixing method can meet basic protection needs to a certain extent, it has significant shortcomings in some harsh environments, such as automotive applications with high vibration and high ambient temperatures. Specifically, due to the limitations of the outer shell material and structure, as well as the changes in silicone adhesion over time and temperature, the outer shell may deform after prolonged use, and the silicone's adhesion will gradually decrease. This will cause the upper and lower covers to become loose and even fall off. Once the core becomes loose or falls off, it will not only affect its normal operation, but may also damage surrounding electronic components, leading to a series of safety hazards.

[0004] To this end, the utility model provides a sealed nanocrystalline magnetic core shell. Utility Model Content

[0005] In view of the above problems existing in the existing technology, the purpose of the present invention is to provide a sealed nanocrystalline magnetic core shell, which can fix the magnetic core inside the shell to prevent the magnetic core from loosening or falling off after long-term use, and can effectively solve the problems in the background technology.

[0006] The purpose of this utility model can be achieved through the following technical solutions:

[0007] A sealed nanocrystalline magnetic core housing comprises a housing, the housing being provided with a lower cover and an upper cover, the lower cover being provided with a receiving cavity having an upper opening, the upper cover being coupled and snapped onto the upper opening of the lower cover, the receiving cavity of the lower cover being provided with a magnetic core;

[0008] A first annular clamping protrusion extending upward from the outer peripheral edge of the upper opening of the lower cover, a second annular clamping protrusion extending upward from the inner peripheral edge of the upper opening of the lower cover, a first annular groove corresponding to the first annular clamping protrusion is formed at the bottom of the upper cover, and a second annular groove corresponding to the second annular clamping protrusion is formed at the bottom of the upper cover;

[0009] When assembling the upper cover, the first annular groove and the second annular groove are respectively inserted into the first annular clamping protrusion and the second annular clamping protrusion of the lower cover, and the first annular groove and the second annular groove of the upper cover are bonded to the lower cover by applying glue.

[0010] As a further preferred technical solution of the present invention, the cross section of the lower cover is an annular body in the shape of "0", and the first annular clamping protrusion and the second annular clamping protrusion are both in the shape of "0";

[0011] An annular protrusion along the outer circumference of the first annular protrusion is provided in the middle of the outer wall of the first annular protrusion of the lower cover, and an annular protrusion along the inner circumference of the second annular protrusion is provided in the middle of the inner wall of the second annular protrusion of the lower cover.

[0012] As a further preferred technical solution of the present invention, the cross section of the upper cover is an annular body in the shape of "0", and the first annular groove and the second annular groove are both in the shape of "0";

[0013] Annular grooves corresponding to the annular protrusions of the first annular groove and the second annular groove of the upper cover are respectively formed in the middle of the inner walls thereof.

[0014] As a further preferred technical solution of the present invention, the magnetic core is a ring-shaped body with an "0"-shaped cross section.

[0015] As a further preferred technical solution of the present invention, the bottom of the inner wall of the accommodating cavity of the lower cover is bonded to the magnetic core by gluing.

[0016] As a further preferred technical solution of the present invention, an annular groove in the shape of "0" is provided on the upper top surface of the upper cover.

[0017] As a further preferred technical solution of the present invention, the upper cover is an integral piece made of hard plastic material.

[0018] As a further preferred technical solution of the present invention, the lower cover is an integral piece made of hard plastic material.

[0019] As described above, the sealed nanocrystalline magnetic core shell provided by the present invention has the following beneficial effects:

[0020] The utility model utilizes the above-mentioned sealed nanocrystalline magnetic core shell. Compared with the prior art, during use, glue is applied to the bottom of the inner wall of the accommodating cavity of the lower cover, and then the magnetic core is placed inside the lower cover so that the magnetic core is firmly fixed inside the lower cover. Then, glue is applied to the first annular groove and the second annular groove of the upper cover and the first annular clamping protrusion and the second annular clamping protrusion of the lower cover are correspondingly covered and bonded, so that the upper cover and the lower cover are connected and sealed, so that the magnetic core is fixed inside the shell. Moreover, the annular protrusions of the first annular clamping protrusion and the second annular clamping protrusion of the lower cover are adapted to be arranged with the annular clamping grooves of the first annular groove and the second annular groove of the upper cover, so that the connection between the upper cover and the lower cover is more firmly made, thereby preventing the shell from being deformed during long-term use, which may cause the magnetic core to become loose or fall off.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 This is a schematic structural diagram of a sealed nanocrystalline magnetic core shell applied for in the utility model;

[0024] Figure 2 This is a schematic diagram of the explosion structure of a sealed nanocrystalline magnetic core shell applied for in the utility model;

[0025] Figure 3 This is a schematic structural diagram of an upper cover of a sealed nanocrystalline magnetic core shell applied for in the present utility model;

[0026] Figure 4 This is a schematic structural diagram of a lower cover of a sealed nanocrystalline magnetic core shell applied for in the present utility model;

[0027] Figure 5 A cross-sectional view of a sealed nanocrystalline magnetic core shell applied for in the present utility model;

[0028] Figure 6 for Figure 5 Enlarged schematic diagram of point Ⅰ in the middle.

[0029] Summary of reference numerals and their descriptions:

[0030] 100, outer shell; 200, lower cover; 210, accommodating cavity; 220, first annular locking protrusion; 230, second annular locking protrusion; 240, annular protrusion; 300, upper cover; 310, first annular groove; 320, second annular groove; 330, annular locking groove; 340, annular sink; 400, magnetic core. DETAILED DESCRIPTION

[0031] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0032] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content. The specific structure can be described with reference to the drawings of the patent application.

[0033] The utility model provides a sealed nanocrystalline magnetic core shell, please refer to Figures 1 to 6 As shown, the housing 100 is provided with a lower cover 200 and an upper cover 300. The lower cover 200 is provided with a receiving cavity 210 with an upper opening. The upper cover 300 covers and is engaged with the upper opening of the lower cover 200. The receiving cavity 210 of the lower cover 200 is internally loaded with a magnetic core 400 to prevent the magnetic core 400 from moving inside the lower cover 200.

[0034] A first annular locking protrusion 220 extending upward from the outer circumferential edge of the upper opening of the lower cover 200 is formed, and a second annular locking protrusion 230 extending upward from the inner circumferential edge of the upper opening of the lower cover 200 is formed. A first annular groove 310 corresponding to the first annular locking protrusion 220 is formed at the bottom of the upper cover 300, and a second annular groove 320 corresponding to the second annular locking protrusion 230 is formed at the bottom of the upper cover 300.

[0035] When assembling the upper cover 300, the first annular groove 310 and the second annular groove 320 are respectively inserted into the first annular protrusion 220 and the second annular protrusion 230 of the lower cover 200, and the first annular groove 310 and the second annular groove 320 of the upper cover 300 are bonded to the lower cover 200 by applying glue, so that the connection between the upper cover 300 and the lower cover 200 is more secure.

[0036] Specifically, the specific structure of the lower cover 200 is shown below. Figure 1 、 Figure 4 、 Figure 5 as well as Figure 6 As shown, the cross section of the lower cover 200 is an “O”-shaped ring body, and the first annular clamping protrusion 220 and the second annular clamping protrusion 230 are both “O”-shaped;

[0037] An annular protrusion 240 is provided along the outer circumference of the first annular protrusion 220 in the middle of the outer wall of the lower cover 200 , and an annular protrusion 240 is provided along the inner circumference of the second annular protrusion 230 in the middle of the inner wall of the second annular protrusion 230 of the lower cover 200 .

[0038] Specifically, the specific structure of the upper cover 300 is shown below. Figure 1 、 Figure 3 、 Figure 5 as well as Figure 6 As shown, the cross section of the upper cover 300 is an “O”-shaped ring body, and the first annular groove 310 and the second annular groove 320 are both “O”-shaped;

[0039] Annular grooves 330 corresponding to the annular protrusions 240 of the first annular groove 310 and the second annular groove 320 of the upper cover 300 are respectively formed in the middle of the inner walls thereof.

[0040] The magnetic core 400 is a ring-shaped body with a "0"-shaped cross section.

[0041] The bottom of the inner wall of the accommodating cavity 210 of the lower cover 200 is bonded to the magnetic core 400 by applying glue.

[0042] The upper surface of the upper cover 300 is provided with an annular groove 340 in the shape of an O.

[0043] The upper cover 300 is an integral piece made of hard plastic material.

[0044] The lower cover 200 is an integral piece made of hard plastic.

[0045] When in use, glue is applied to the bottom of the inner wall of the accommodating cavity 210 of the lower cover 200, and then the magnetic core 400 is placed inside the lower cover 200, so that the magnetic core 400 is firmly fixed inside the lower cover 200, and then the first annular groove 310 and the second annular groove 320 of the upper cover 300 are coated with glue and correspondingly covered and bonded with the first annular protrusion 220 and the second annular protrusion 230 of the lower cover 200, so that the upper cover 300 and the lower cover 200 are connected and sealed, so that the magnetic core 400 is fixed to the inside of the shell 100, and the annular protrusion 240 of the first annular protrusion 220 and the second annular protrusion 230 of the lower cover 200 is adapted to the annular groove 330 of the first annular groove 310 and the second annular groove 320 of the upper cover 300, so that the connection between the upper cover 300 and the lower cover 200 is more secure, thereby preventing the shell 100 from deforming during long-term use, which may cause the magnetic core 400 to loosen or fall off.

[0046] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A sealed nanocrystalline magnetic core housing, comprising a housing (100), characterized in that: The housing (100) is provided with a lower cover (200) and an upper cover (300); the lower cover (200) is provided with a receiving cavity (210) with an upper opening; the upper cover (300) covers and is clamped to the upper opening of the lower cover (200); a magnetic core (400) is loaded inside the receiving cavity (210) of the lower cover (200); A first annular clamping protrusion (220) extending upwards from the outer circumferential edge of the upper opening of the lower cover (200) is provided, and a second annular clamping protrusion (230) extending upwards from the inner circumferential edge of the upper opening of the lower cover (200) is provided, and a first annular groove (310) corresponding to the first annular clamping protrusion (220) is provided at the bottom of the upper cover (300), and a second annular groove (320) corresponding to the second annular clamping protrusion (230) is provided at the bottom of the upper cover (300); When assembling the upper cover (300), the first annular groove (310) and the second annular groove (320) are respectively inserted into the first annular clamping protrusion (220) and the second annular clamping protrusion (230) of the lower cover (200), and the first annular groove (310) and the second annular groove (320) of the upper cover (300) are bonded to the lower cover (200) by applying glue.

2. A sealed nanocrystalline magnetic core shell according to claim 1, characterized in that: The cross section of the lower cover (200) is an "O"-shaped annular body, and the first annular clamping protrusion (220) and the second annular clamping protrusion (230) are both "O"-shaped; An annular protrusion (240) is provided at the middle of the outer wall of the first annular clamping protrusion (220) of the lower cover (200) along the outer periphery of the first annular clamping protrusion (220), and an annular protrusion (240) is provided at the middle of the inner wall of the second annular clamping protrusion (230) of the lower cover (200) along the inner periphery of the second annular clamping protrusion (230).

3. The sealed nanocrystalline magnetic core shell according to claim 2, characterized in that: The cross section of the upper cover (300) is an "O"-shaped annular body, and the first annular groove (310) and the second annular groove (320) are both "O"-shaped; Annular grooves (330) corresponding to the annular protrusions (240) of the first annular protrusion (220) and the second annular protrusion (230) are respectively provided in the middle of the inner walls of the first annular groove (310) and the second annular groove (320) of the upper cover (300).

4. The sealed nanocrystalline magnetic core shell according to claim 1, characterized in that: The magnetic core (400) is a ring-shaped body with a "0"-shaped cross section.

5. The sealed nanocrystalline magnetic core shell according to claim 2, characterized in that: The bottom of the inner wall of the accommodating cavity (210) of the lower cover (200) is bonded to the magnetic core (400) by applying glue.

6. The sealed nanocrystalline magnetic core shell according to claim 3, characterized in that: An annular sink groove (340) in the shape of "0" is provided on the upper top surface of the upper cover (300).

7. The sealed nanocrystalline magnetic core shell according to claim 1, characterized in that: The upper cover (300) is an integral piece made of hard plastic material.

8. The sealed nanocrystalline magnetic core shell according to claim 1, characterized in that: The lower cover (200) is an integral piece made of hard plastic material.

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