T-core inductor structure

Abstract

The utility model discloses a T-core inductor structure, and belongs to the technical field of inductors. A T-core inductor structure comprises a powder core sintering body and a coil arranged on the powder core sintering body, the powder core sintering body and the coil are covered with a cover body, the powder core sintering body comprises a baffle which is buckled with the open end of the cover body, before mold pressing, a direction recognizing groove is formed in one side of the baffle located in the cover body, and the direction recognizing groove is formed in the other side of the baffle located in the cover body. The deformation degree of the direction recognizing groove is equal to the height of a reserved direction recognizing boss of the mold; according to the utility model, the direction identifying groove is reserved before mould pressing, and after mould pressing, the baffle plate is pressed into the accommodating space to just fill the direction identifying groove, so that not only can the filling completeness of the accommodating space be ensured, but also excessive materials of the baffle plate can be prevented from extruding the coil to cause deformation or damage and copper exposure of the coil; therefore, the completeness of the coil is effectively guaranteed, large current is prevented from being generated in use, and safety and reliability are achieved.

Description

Technical Field

[0001] This utility model relates to the field of inductor technology, and in particular to a T-core inductor structure. Background Technology

[0002] An inductor is a passive component that resists any change in current. It consists of a coil wound around a supporting iron core, which can be made of magnetic or non-magnetic material. An inductor is a circuit component that generates a change in magnetic flux by changing the current in its coil. The magnetic field originates from the flow of electric charge, which is formed by electric current. Alternating current produces a magnetic field, and a changing magnetic field induces a current. The linear relationship between these two phenomena is called inductance.

[0003] Traditional modular inductors primarily consist of an I-shaped iron core with a manganese-zinc ferrite core. A coil is wound around this I-shaped core, and the coiled I-shaped core is then assembled into a U-shaped cover to form a modular inductor. Because this modular inductor has high permeability and low saturation magnetic force, it is prone to saturation during use and cannot withstand high currents.

[0004] Current inductors are required to withstand high currents. Therefore, most inductors, such as chokes or current traps, are made by powder pressing. First, an air coil is wound, and then the air coil is placed in a mold. Iron powder is poured into the mold and pressed together with the coil to form an inductor. This powder pressing method results in low permeability and high saturation magnetic force. During use, the inductor is not easily saturated and can withstand larger currents.

[0005] exist Figure 1 and Figure 2 In the T-core molding process for integral inductors, powder pressing involves first creating a hollow coil, placing it in a mold, and then pouring iron powder mixed with polymer colloid into the mold. The coil is then pressed together using a high pressure of 6-8 tons per square centimeter. During manufacturing, the T-core molding baffle is flat both top and bottom, ensuring complete contact between the coil bottom and the baffle. However, during molding, the mold's groove is raised. After molding, the T-core baffle's groove presses against the coil, causing deformation and copper exposure. This leads to short circuits between coil layers, resulting in high current generation. Utility Model Content

[0006] The purpose of this invention is to solve the problem of short circuits caused by coil deformation and damage during the molding process of the baffle in the prior art, and to propose a T-core inductor structure.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A T-core inductor structure includes a powder core sintered body and a coil disposed on the powder core sintered body. The powder core sintered body and the coil are covered by a cover. The powder core sintered body includes a baffle that engages with the open end of the cover. Before molding, a recognizing groove is formed on one side of the baffle located inside the cover. The deformation degree of the recognizing groove is equal to the height of the recognizing boss reserved in the mold.

[0009] Preferably, the dimensions of the orientation groove are in the range of 0.4-0.6 mm in width and 0.04-0.06 mm in depth.

[0010] To improve processing efficiency, the dimensions of the orientation groove are further defined as follows: width 0.5mm and depth 0.05mm.

[0011] To ensure the stability of the coil installation, preferably, it also includes a column fixedly connected to the baffle, with the column and the baffle forming an accommodating space, and the coil is sleeved on the column and located within the accommodating space.

[0012] Furthermore, the orientation slots are provided in two sets, and are symmetrically arranged on both sides of the column.

[0013] Preferably, the coil is made of copper.

[0014] Preferably, the open end of the cover is provided with a groove, and the orientation groove corresponds to the groove.

[0015] Compared with the prior art, this utility model provides a T-core inductor structure, which has the following beneficial effects:

[0016] 1. The T-core inductor structure, by selecting the size of the orientation groove as 0.5mm wide and 0.05mm deep, can fully meet the height and width of the orientation boss of the mold, and prevent the coil (3) from being squeezed.

[0017] All parts of this device not described herein are the same as or can be implemented using existing technologies. This utility model, by pre-reserving a recognizing groove before molding, ensures that the amount of baffle pressed into the accommodating space after molding can precisely fill the recognizing groove. This not only ensures the integrity of the accommodating space but also prevents excess material from the baffle from squeezing the coil, causing deformation or damage to the coil and exposing the copper. This effectively ensures the integrity of the coil and avoids the generation of large currents during use, making it safe and reliable. Attached Figure Description

[0018] Figure 1 Schematic diagram of existing technology Figure 1 ;

[0019] Figure 2 Schematic diagram of existing technology Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the T-core inductor structure before molding proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the molded structure of a T-core inductor structure proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the powder core sintered body structure of a T-core inductor structure proposed in this utility model.

[0023] In the diagram: 1. Baffle; 2. Column; 3. Coil; 4. Direction slot; 5. Cover. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing 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 this utility model.

[0026] Example:

[0027] Reference Figures 3-5 A T-core inductor structure is mainly composed of a powder core sintered body consisting of a baffle 1 and a column 2. A receiving space is formed between the column 2 and the baffle 1. The coil 3 is sleeved on the column 2 and located within the receiving space. A cover 5 covers the powder core sintered body and the coil 3 and is molded to form an inductor. Here, the open end of the cover 5 is the same size as the baffle 1, so that the open end can be completely closed after molding. Before molding, a receptive groove 4 is formed on one side of the baffle 1 inside the cover 5. The deformation degree of the receptive groove 4 is equal to the height of the receptive boss reserved in the mold. After molding, the amount of baffle 1 pressed into the receiving space can just fill the receptive groove 4. This not only ensures the integrity of the filling of the receiving space, but also prevents the excess material of the baffle 1 from squeezing the coil 3 and causing deformation or damage to the coil 3 and exposed copper. This effectively ensures the integrity of the coil 3 and avoids the generation of large current during use, making it safe and reliable.

[0028] Specifically, the dimensions of the orientation groove 4 are in the range of 0.4-0.6mm in width and 0.04-0.06mm in depth. Here, it is preferred to have a width of 0.5mm and a depth of 0.05mm, which can fully meet the height and width of the orientation boss of the mold and prevent the coil 3 from being squeezed.

[0029] In addition, there are two sets of orientation grooves 4, which are symmetrically arranged on both sides of the length direction of the column 2, that is, corresponding to the grooves provided at the open end of the cover 5.

[0030] Coil 3 is made of copper.

[0031] In this invention, before molding, a recognition position is reserved on the baffle 1, i.e., a recognition groove 4 is opened on the side near the coil 3. The preferred dimensions of this groove are 0.5mm wide and 0.05mm deep. Its depth and width are consistent with the groove of the cover 5, and it is also consistent with the size of the recognition boss of the mold. The coil 3 is sleeved on the column 2. During the molding process, the material squeezed by the recognition boss on the baffle 1 will enter the recognition groove 4 and fill it, so that the side of the baffle 1 near the coil 3 is flush. This ensures effective molding with the cover 5 and effectively avoids excess material squeezing the coil 3, causing it to deform and break. The material used for the integrally molded inductor is mainly composed of iron powder. After molding, it is insulated. The integrally molded inductor product is small in size, and the entire product is covered by roller spraying. After the insulation treatment, the required terminals are laser-etched to prepare for subsequent electroplating.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A T-core inductance structure comprising a powder core sintered body and a coil (3) provided on the powder core sintered body, the powder core sintered body and the coil (3) being covered with a cover (5), characterized in that, The powder core sintered body comprises a baffle (1) which is buckled with the open end of the cover body (5), Wherein, a direction recognition groove (4) is formed on one side of the baffle (1) inside the cover body (5), and the deformation degree of the direction recognition groove (4) is equal to the reserved direction recognition boss height of the mold.

2. The T-core inductor structure of claim 1, wherein, The size of the direction recognition groove (4) is: width 0.4-0.6mm, depth 0.04-0.06mm.

3. The T-core inductor structure of claim 2, wherein, The size of the direction recognition groove (4) is: width 0.5mm, depth 0.05mm.

4. The T-core inductor structure of claim 1, wherein, It also comprises a column (2) fixedly connected to the baffle (1), and a containing space is formed between the column (2) and the baffle (1), and the coil (3) is sleeved on the column (2) and located in the containing space.

5. The T-core inductor structure of claim 4, wherein, The direction recognition groove (4) is provided with two groups and is symmetrically arranged on both sides of the column (2).

6. The T-core inductor structure of claim 1, wherein, The material of the coil (3) is copper.

7. The T-core inductor structure of claim 1, wherein, The open end of the cover body (5) is provided with a groove, and the direction recognition groove (4) corresponds to the groove.

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