An integrated magnetic core inductor

Abstract

This utility model discloses an integrated magnetic core inductor, including a magnetic core body with a receiving cavity; at least one intermediate magnetic core disposed on the inner side wall of the receiving cavity; the magnetic core body and the intermediate magnetic core are integrally formed, and there are gaps between the intermediate magnetic core and the adjacent and opposite side walls of the receiving cavity where the intermediate magnetic core is disposed; the lower end of the intermediate magnetic core is connected to the bottom of the receiving cavity; and terminals are inserted into the receiving cavity. The integral formation of the magnetic core body and the intermediate magnetic core in this utility model fixes the position of the intermediate magnetic core relative to the magnetic core body. During assembly, only the terminals need to be inserted into the receiving cavity to complete the installation. The assembly steps are simple, and during mass production, the intermediate magnetic core will not be misaligned during assembly, effectively avoiding problems such as large deviations in inductance and saturation characteristics, non-concentrated characteristics, and poor process capability (CPK) in mass-produced products.

Description

Technical Field

[0001] This utility model relates to the field of inductor technology, and in particular to an integrated magnetic core inductor. Background Technology

[0002] An inductor is a passive electronic component that stores and releases magnetic energy using the principle of electromagnetic induction. Existing inductor assembly requires three parts: an outer frame core, a middle rod core, and conductors. First, the conductors are assembled into the outer frame core, then the middle rod core is installed, and adhesive is applied to bond these three parts together. The adhesive is then cured by baking, resulting in an inductor. Existing inductors are not only cumbersome to assemble, but the middle rod core often exhibits misalignment within the outer frame core after assembly. This misalignment leads to higher inductance and lower saturation current, especially during mass production. Such irregular assembly misalignment results in large deviations in inductance and saturation characteristics, characteristic dispersion, and poor process capability (CPK) in mass-produced products. To address these issues, this application proposes an integrated core inductor. Summary of the Invention

[0003] Based on this, in order to solve the problems existing in the prior art, this application provides an integrated magnetic core inductor, including a magnetic core body, and the magnetic core body is provided with a receiving cavity;

[0004] At least one middle rod magnetic core is disposed on the inner side wall of the receiving cavity. The magnetic core body and the middle rod magnetic core are integrally formed, and there is a gap between the middle rod magnetic core and the side wall of the receiving cavity where the middle rod magnetic core is disposed, which is adjacent to and opposite to other side walls.

[0005] Terminals are inserted into the receiving cavity.

[0006] Furthermore, there are two central magnetic cores, which are respectively disposed on opposite side walls inside the cavity, and there is a gap between the two central magnetic cores.

[0007] Furthermore, the lower end of the middle rod core is connected to the bottom of the receiving cavity.

[0008] Furthermore, the terminal includes a first strip and two second strips, with the two second strips respectively disposed at both ends of the first strip, and the first strip and the two second strips connected to form a U-shape.

[0009] Furthermore, the width of the first strip is less than or equal to the distance between the central rod core and the side wall opposite to the central rod core, or less than or equal to the distance between two central rod cores arranged opposite each other.

[0010] Furthermore, the terminal also includes a protrusion, with one end of each of the two second strips connected to the first strip and the other end provided with a protrusion.

[0011] Furthermore, the first strip-shaped part, the two second strip-shaped parts and the protrusion form a "ji" shape.

[0012] Furthermore, a notch is provided at a position of the magnetic core body corresponding to the protrusion, and the notch is located outside the opening of the accommodation cavity and communicates with the accommodation cavity, and the protrusion is located within the notch.

[0013] Beneficial effects: The magnetic core body and the middle rod magnetic core of the present utility model are integrally formed, so that the position of the middle rod magnetic core is fixed relative to the magnetic core body. During assembly, only the terminal needs to be inserted into the accommodation cavity to complete the installation. The assembly steps are simple. And during mass production, the situation of the middle rod magnetic core being skewed during assembly will not occur, which can effectively avoid problems such as large deviation in the inductance value and saturation characteristics of mass-produced products, non-concentrated characteristics, and poor process capability CPK. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0015] Figure 1 It is an assembly schematic diagram of the integrated magnetic core inductor of the present utility model;

[0016] Figure 2 It is a front sectional view of the integrated magnetic core inductor of the present utility model;

[0017] Figure 3 It is a schematic diagram of the top section of the integrated magnetic core inductor of the present utility model;

[0018] Figure 4 It is a schematic diagram of the terminal structure of the integrated magnetic core inductor of the present utility model;

[0019] Figure 5 It is a side view of the terminal of the integrated magnetic core inductor of the present utility model;

[0020] In the figure: 1, magnetic core body; 11, middle rod magnetic core; 12, accommodation cavity; 13, notch; 2, terminal; 21, first strip-shaped part; 22, second strip-shaped part; 23, protrusion.

[0021] The realization, functional characteristics and advantages of the purpose of the present utility model will be further described in conjunction with the embodiments and the drawings. Specific Embodiments

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the term "and / or" throughout the text includes three solutions; taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0025] like Figure 1-3 As shown, this application provides an integrated magnetic core inductor, including: a magnetic core body 1, the magnetic core body 1 being provided with a receiving cavity 12;

[0026] At least one central magnetic core 11 is disposed on the inner side wall of the receiving cavity 12. The magnetic core body 1 and the central magnetic core 11 are integrally formed, and there are gaps between the central magnetic core 11 and the other side walls adjacent to and opposite to the side walls of the receiving cavity 12 where the central magnetic core 11 is disposed. The lower end of the central magnetic core 11 is connected to the bottom of the receiving cavity 12.

[0027] Terminal 2 is inserted into the receiving cavity 12.

[0028] In this embodiment, the shape of the middle rod magnetic core 11 is square, and when the number of the middle rod magnetic core 11 is one, the cross-sectional shape of the receiving cavity 12 is "[" shaped.

[0029] When the number of the middle rod cores 11 is two, the two middle rod cores 11 are respectively arranged on the opposite side walls in the accommodation cavity 12, and there is a gap between the two middle rod cores 11. At this time, the cross-sectional shape of the accommodation cavity 12 is "I"-shaped.

[0030] The core body 1 of the present utility model and the middle rod core 11 are integrally formed, so that the position of the middle rod core 11 is fixed relative to the core body 1. During assembly, only the terminal 2 needs to be inserted into the accommodation cavity 12 to complete the installation. The assembly steps are simple. And during mass production, since the positions of the core body 1 and the middle rod core 11 are fixed relative to each other, the situation that the middle rod core 11 is skewed during assembly will not occur, which can effectively avoid problems such as large deviation of the inductance value and saturation characteristics of the mass-produced products, non-concentrated characteristics, and poor process capability CPK.

[0031] As Figure 4-5 shown, in one embodiment, the terminal 2 includes a first strip 21 and two second strips 22. The two second strips 22 are respectively arranged at both ends of the first strip 21, and the first strip 21 and the two second strips 22 are connected to form a U shape.

[0032] In this embodiment, the length of the first strip 21 is the same as the length of the accommodation cavity 12, the width of the second strip 22 is the same as the width and depth of the accommodation cavity 12, and the length of the second strip 22 is the same as the depth of the accommodation cavity 12.

[0033] In one embodiment, the terminal 2 further includes a protrusion 23. One end of the two second strips 22 is connected to the first strip 21, and the other end is provided with the protrusion 23. The first strip 21, the two second strips 22 and the protrusion 23 form a "ji" shape.

[0034] In one embodiment, the width of the first strip 21 is less than or equal to the distance between the middle rod core 11 and the side wall opposite to the middle rod core 11, or less than or equal to the distance between two relatively arranged middle rod cores 11.

[0035] In this embodiment, when there is only one middle rod core 11, the width of the first strip 21 is set to be less than or equal to the distance between the middle rod core 11 and the side wall opposite to the middle rod core 11. When there are two middle rod cores 11, the width of the first strip 21 is set to be less than or equal to the distance between two relatively arranged middle rod cores 11. The purpose of such a setting is that the first strip 21 can smoothly pass between the middle rod core 11 and the side wall opposite to it or between the two middle rod cores 11, so that the terminal 2 is inserted into the accommodation cavity 12 to complete the installation of the terminal 2.

[0036] In addition, the width of the second strip 22 should be greater than the distance between the central rod core 11 and the side wall opposite to the central rod core 11, or greater than the distance between two oppositely arranged central rod cores 11, so that the central rod core 11 is located between the two second strips 22, thereby forming an efficient closed magnetic circuit.

[0037] In one embodiment, a notch 13 is provided at the position corresponding to the protrusion 23 of the magnetic core body 1, and the notch 13 is located outside the opening of the receiving cavity 12 and communicates with the receiving cavity 12, and the protrusion 23 is located inside the notch 13.

[0038] In this embodiment, the notch 13 allows the interior of the receiving cavity 12 to communicate with the outside. When the terminal 2 is installed, the first strip 21 and the two second strips 22 are located inside the receiving cavity 12, and the protrusion 23 is placed inside the notch 13. In this way, the magnetic core body 1 will limit the protrusion 23 to prevent the terminal 2 from moving, and at the same time facilitate the connection between the terminal 2 and the outside.

[0039] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An integrated magnetic core inductor, characterized by, Comprising: A magnetic core body provided with an accommodation cavity; At least one middle rod magnetic core disposed on the inner sidewall of the accommodation cavity, the magnetic core body and the middle rod magnetic core are integrally formed, and there is a gap between the middle rod magnetic core and the other sidewalls adjacent to and opposite the sidewall of the accommodation cavity where the middle rod magnetic core is disposed; Terminals inserted into the accommodation cavity.

2. The integrated magnetic core inductor of claim 1, wherein, The number of the middle rod magnetic cores is two, and the two middle rod magnetic cores are respectively disposed on the opposite sidewalls in the accommodation cavity, and there is a gap between the two middle rod magnetic cores.

3. The integrated magnetic core inductor of claim 2, wherein, The lower end of the middle rod magnetic core is connected to the bottom of the accommodation cavity.

4. The integrated magnetic core inductor of claim 2, wherein, The terminal includes a first strip and two second strips, and the two second strips are respectively disposed at both ends of the first strip, and the first strip and the two second strips are connected to form a U shape.

5. The integrated magnetic core inductor of claim 4, wherein, The width of the first strip is less than or equal to the distance between the middle rod magnetic core and the sidewall opposite the middle rod magnetic core, or less than or equal to the distance between the two relatively disposed middle rod magnetic cores.

6. The integrated magnetic core inductor of claim 4, wherein, The terminal further includes a protrusion, one end of the two second strips is connected to the first strip, and the other end is provided with the protrusion.

7. The integrated magnetic core inductor of claim 6, wherein, The first strip, the two second strips and the protrusion form a "Ji" shape.

8. The integrated magnetic core inductor of claim 6, wherein, A notch is provided at a position corresponding to the protrusion on the magnetic core body, and the notch is located outside the opening of the accommodation cavity and communicates with the accommodation cavity, and the protrusion is located in the notch.

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