Inductor with complete plane

Abstract

The utility model discloses an inductor with a complete plane, which relates to the field of inductance elements, and comprises a first iron core, a second iron core, a third iron core and a fourth iron core, the second iron core is of a rectangular block-shaped structure; the terminal is of a structure shaped like a Chinese character'ji '; the terminal is inserted into the first iron core from the opening position, and the second iron core is inserted into the terminal, so that the first iron core completely covers the terminal and the second iron core, and the outer surface of the inductor forms a complete plane. The first iron core is used as a magnetic protective cover to completely cover the second iron core and the terminals, so that the outer surface of the formed inductor is of a complete plane structure, a split type stacking connection structure in the prior art is replaced, in the SIM technology, direct empty suction can be achieved, use is convenient, gaps do not exist on the outer surface of the inductor structure, and the structure is simple. And the stability of the size space is improved. Under the action of a complete plane and zero clearance, the electromagnetic interference performance is improved, and the stability of saturation current is improved.

Description

Technical Field

[0001] The utility model relates to the field of inductance elements, and particularly relates to an inductor with a complete plane. Background Art

[0002] An inductor is a component that can convert electrical energy into magnetic energy and store it. The structure of an inductor is similar to that of a transformer, but it has only one winding. An inductor has a certain inductance, and it only impedes the change of current. If the inductor is in a state without current passing through, when the circuit is switched on, it will try to impede the current from flowing through it; if the inductor is in a state with current passing through, when the circuit is switched off, it will try to maintain the current unchanged. An inductor is also called a choke, a reactor, or a dynamic reactor.

[0003] For existing inductors, for example, the inductance structure disclosed in the authorized publication number CN116959876B has a specific structure as Figure 1 shown, which consists of two identical iron cores 1 and a terminal 2. During assembly, the two iron cores clamp a terminal, resulting in a non-complete plane formed at its upper and lower ends, and there are connected gaps formed around it. There are the following defects in actual use:

[0004] In the SIM process, the non-complete plane cannot be directly vacuum-sucked and requires the aid of label paper to achieve, which is inconvenient to use;

[0005] Due to the split-type splicing assembly, there are gaps between the structures, and the actual size will have a slight change according to the inductance, and the dimensional space stability is poor;

[0006] The non-complete plane and the gaps result in poor electromagnetic interference performance;

[0007] The saturation current performance is unstable. Content of the Utility Model

[0008] In order to overcome the above defects of the prior art, the utility model provides an inductor with a complete plane to solve the problems existing in the above background art.

[0009] The utility model provides the following technical solutions: An inductor with a complete plane, comprising:

[0010] A first iron core, having a hollow structure, and an opening is provided at one end thereof;

[0011] A second iron core, having a rectangular block structure;

[0012] A terminal, having a "ji" character-shaped structure;

[0013] The terminal is inserted into the first iron core from the opening position, and the second iron core is inserted into the terminal, so that the first iron core completely covers the terminal and the second iron core, forming a complete plane on the outer surface of the inductor.

[0014] Preferably, each of the two ends of the terminal is provided with a stop block for positioning the terminal on the first iron core.

[0015] Preferably, the first iron core is provided with a slot for assembling terminals and the second iron core, and grooves adapted to the stop blocks are opened at the bottom of both ends of the slot.

[0016] Preferably, the width of the slot is adapted to the thickness of the terminal so that the terminal is just inserted into the slot.

[0017] Preferably, the thickness of the first iron core is the same as the length of the stop block, so that the end face of the stop block is flush with the surface of the first iron core.

[0018] Preferably, the terminal and the stop are integrally formed.

[0019] Preferably, both the first iron core and the second iron core are made of ferrite material.

[0020] Preferably, the terminal is made of copper material and is electroplated.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] 1. This utility model utilizes the first iron core as a magnetic protective cover to completely cover the second iron core and the terminals, so that the outer surface of the formed inductor is a complete planar structure, replacing the split stacked connection structure in the prior art. In the SIM process, it can be directly drawn in, which is convenient to use.

[0023] 2. The inductor of this application has a complete plane covered by a first iron core, so that there are no gaps on the outer surface of the inductor structure, which improves the stability of the size space.

[0024] 3. The inductor of this application has a complete plane, so that there are no gaps on the outer surface of the inductor structure. The performance of electromagnetic interference is improved under the action of the complete plane and zero gap.

[0025] 4. This invention improves the stability of saturation current under the action of a complete plane and zero gap. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the existing technology structure.

[0027] Figure 2 This is a schematic diagram of the exploded structure of the inductor of this utility model.

[0028] Figure 3 This is a schematic diagram of the complete structure of the inductor of the present utility model.

[0029] Figure 4 This is the saturation curve graph of the present utility model.

[0030] The reference numerals are: 1, the first iron core; 11, the notch; 12, the groove; 2, the second iron core; 3, the terminal; 31, the stop block. Specific embodiments

[0031] The following will elaborate on the preferred embodiments of the present utility model in conjunction with the accompanying drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making the protection scope of the present utility model more clearly defined.

[0032] The present utility model provides an inductor with a complete plane, as Figure 2-3 shown, including: the first iron core 1, the second iron core 2, and the terminal 3. Specifically, the first iron core 1 has a hollow structure, and an opening is provided at one end thereof; the second iron core 2 has a rectangular block structure; the terminal 3 has a "ji" - shaped structure.

[0033] During assembly, insert the terminal 3 into the inside of the first iron core 1 from the opening position provided on the first iron core 1 until the top of the terminal 3 abuts against the inside of the top of the first iron core 1. Then, insert the second iron core 2 into the inside of the terminal 3. At this time, the assembly of the inductor is completed. The first iron core 1 of the inductor with this structure completely covers the terminal 3 and the second iron core 2, making the outer surface of the inductor form a complete plane.

[0034] This application uses the first iron core 1 as a magnetic protective cover to completely cover the second iron core 2 and the terminal 3, making the outer surface of the formed inductor a complete plane structure, replacing the split - type stacked connection structure in the prior art. The inductor of this application has a complete plane and can be directly vacuum - picked in the SIM process, which is convenient to use; and covered by the first iron core, there is no gap on the outer surface of the inductor structure, which not only improves the stability of the dimensional space but also improves the electromagnetic interference performance under the complete plane and zero - gap conditions.

[0035] Test the saturation current of the inductor of this application and the prior art under a current of 0A - 100A, as Figure 4 shown.

[0036] For this application, ∆L1 = 66.7 - 64.5 = 2.2;

[0037] For the prior art, ∆L2 = 62.2 - 51.1 = 11.1;

[0038] From the attached Figure 4It can be seen that the inductance of the structure in this application changes more gradually with the increase of current; while the inductance of the prior art changes more steeply with the increase of current (especially after the current is greater than 80A).

[0039] Based on test data, the saturation current stability of this application is greater than the current stability of the prior art.

[0040] In this embodiment, a stop block 31 is provided at each of the two ends of the terminal 3 to position the terminal 3 on the first iron core 1.

[0041] It can be explained here that the width of the slot 11 is adapted to the thickness of the terminal 3, so that the terminal 3 can be inserted into the slot 11.

[0042] Furthermore, the first iron core 1 is provided with a slot 11 for assembling the terminal 3 and the second iron core 2, and grooves 12 adapted to the stop block 31 are opened at the bottom of both ends of the slot 11.

[0043] It can be explained here that the thickness of the first iron core 1 is the same as the length of the stop block 31, so that the end face of the stop block 31 is flush with the surface of the first iron core 1.

[0044] During assembly, insert one end of terminal 3 into the slot until the stop block 31 abuts against the two grooves 12 to complete the assembly operation between the first iron core 1 and terminal 3. With the cooperation between the stop block 31 and the grooves 12, the first iron core 1 and terminal 3 are precisely positioned, and the terminal 3 is placed in a stable position inside the iron core 1.

[0045] In this embodiment, the terminal 3 and the stop block 31 are integrally formed.

[0046] In this embodiment, both the first iron core 1 and the second iron core 2 are made of ferrite material.

[0047] In this embodiment, terminal 3 is made of copper and electroplated, and the electroplating material is selected as nickel or tin.

[0048] Several points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0049] The above description is only a preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. Any equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present utility model should be included in the protection scope recorded in the claims.

Claims

1. An inductor having a completely planar surface, characterized in that, Comprising: A first iron core (1), having a hollow structure and having an opening provided at one end thereof; A second iron core (2), having a rectangular block structure; A terminal (3), having a "Ji" - shaped structure; The terminal (3) is inserted into the interior of the first iron core (1) from the opening position, and the second iron core (2) is inserted into the interior of the terminal (3), so that the first iron core (1) completely covers the terminal (3) and the second iron core (2) to form a complete plane on the outer surface of the inductor.

2. An inductor with a completely planar surface according to claim 1, characterized in that: Two end portions of the terminal (3) are respectively provided with a stopper (31) for positioning the position of the terminal (3) assembled on the first iron core (1).

3. An inductor with a completely planar surface according to claim 2, characterized in that: The first iron core (1) is provided with a notch (11) for assembling the terminal (3) and the second iron core (2), and grooves (12) adapted to the stoppers (31) are opened at the bottoms of both ends of the notch (11).

4. An inductor with a completely planar surface according to claim 3, characterized in that: The width of the notch (11) is adapted to the thickness of the terminal (3), so that the terminal (3) can just be inserted into the notch (11).

5. An inductor with a completely planar surface according to claim 3, characterized in that: The thickness of the first iron core (1) is the same as the length of the stopper (31), so that the end face of the stopper (31) is flush with the surface of the first iron core (1).

6. An inductor with a completely planar surface according to claim 1, characterized in that: The terminal (3) and the stopper (31) are integrally formed.

7. An inductor with a completely planar surface according to any one of claims 1-6, characterized in that: Both the first iron core (1) and the second iron core (2) are made of ferrite material.

8. An inductor with a completely planar surface according to any one of claims 1-6, characterized in that: The terminal (3) is made of copper material and is produced by electroplating.

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