Inductor structure

Abstract

The utility model provides an inductor structure which comprises an iron core, a coil, a first flange, a second flange, a positive electrode, a negative electrode and a protective shell. One end of the iron core is connected to the first flange, and the other end of the iron core is connected to the second flange; a coil is wound outside the iron core; the two ends of the coil are electrically connected with the positive electrode and the negative electrode respectively; the protective shell is arranged outside the coil in a surrounding mode and abuts against the first flange and the second flange. And the positive electrode and the negative electrode are arranged at the side end of the first flange. According to the inductor structure, the problem that the coil is not covered is effectively solved, damage caused by collision during installation of the coil is avoided by arranging the detachable protective shell, and therefore the service life of the inductor structure is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to inductance technical field especially relates to an inductance structure. BACKGROUND

[0002] The general inductance structure is back film processing, and the back film processing is the device for protecting the inductance by using the glue dispenser to carry out glue coating operation on the inductance after winding.

[0003] The existing inductance structure is provided with a core, the core is provided with an electrode, and the core is provided with a coil group and a protective layer, the protective layer covers the core, but does not completely cover the coil group, and does not cover the electrode, and the electrode is used for welding on the circuit board, so it cannot be shielded by the protective layer.

[0004] However, because the coil group is not completely covered, the coil group is collided during installation, and the coil group is scratched or injured, or the tin beads may be sprayed on the coil group when passing through the reflow oven, and the element is short-circuited, and the generated value is wrong. UTILITY MODEL CONTENTS

[0005] In view of the above problems, the utility model is provided to provide an inductance structure which overcomes the above problems or at least partially solves the above problems.

[0006] In order to solve the above problems, the utility model discloses an inductance structure, which comprises: a core, a coil, a first flange, a second flange, a positive electrode, a negative electrode and a protective shell; one end of the core is connected to the first flange, and the other end is connected to the second flange; the core is wound outside the coil; the two ends of the coil are electrically connected to the positive electrode and the negative electrode respectively; the protective shell is annularly arranged outside the coil and abuts against the first flange and the second flange respectively; the positive electrode and the negative electrode are arranged at the side end of the first flange.

[0007] Further, the coil is a coil group composed of a plurality of coils.

[0008] Further, the first flange, the second flange and the core form a shape of an I-shaped or I-shaped.

[0009] Further, the inductance structure further comprises a first protective layer; the first flange and the second flange are not completely embedded in the first protective layer.

[0010] Further, the first protective layer is any one of ultraviolet curing resin, insulating resin or ultraviolet curing resin and magnetic powder, and the insulating resin is epoxy resin or polyimide resin.

[0011] Further, the inductance structure further comprises a second protective layer; the second protective layer wraps the core. Further, the inductance structure further comprises a second protective layer; the second protective layer wraps the core.

[0012] Furthermore, the second protective layer is any one of ultraviolet-curable resin, insulating resin, or magnetic powder, wherein the insulating resin is an epoxy resin or a polyimide resin.

[0013] This utility model has the following advantages:

[0014] By setting a removable protective shell, the coil can be protected from damage caused by bumps and short circuits caused by solder balls falling into the coil during soldering, thus improving the service life of the inductor structure. In addition, multiple protective layers are set to further improve the service life of the inductor structure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of one embodiment of an inductor structure according to the present invention;

[0016] Figure 2 This is a schematic diagram of one embodiment of an inductor structure according to the present invention.

[0017] In the diagram: 1. Iron core; 2. Coil; 3. First flange; 4. Second flange; 5. Positive pole; 6. Negative pole; 7. Protective shell. Detailed Implementation

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Reference Figure 1 The diagram shows a schematic representation of an embodiment of the inductor structure of this utility model, which specifically includes: an iron core 1, a coil 2, a first flange 3, a second flange 4, a positive electrode 5, a negative electrode 6, and a protective shell 7; one end of the iron core 1 is connected to the first flange 3, and the other end is connected to the second flange 4; the coil 2 is wound around the iron core 1; the two ends of the coil 2 are electrically connected to the positive electrode 5 and the negative electrode 6, respectively; the protective shell 7 is arranged around the coil 2 and abuts against the first flange 3 and the second flange 4, respectively; the positive electrode 5 and the negative electrode 6 are disposed on the side end of the first flange 3.

[0020] It should be noted that one end of the coil 2 is connected to the positive pole 5 and the other end is connected to the negative pole 6. When the coil 2 is wound around the iron core 1, only one end is connected first, and then it is wound around the iron core 1 one turn at a time, so that the interval between each turn is not too large, so as to avoid damping and thus affect the effect of inductance.

[0021] Furthermore, in combination Figure 2The diagram shows a schematic of an embodiment of the inductor structure of the present invention. The protective shell 7 protects the coil 2 inside. The protective shell 7 is detachably connected to the first flange 3 and the second flange 4. It can protect the coil 2 during installation and welding, and prevent the coil 2 from being bumped during installation and the solder balls falling into the coil during welding, which would cause a short circuit. After installation, the protective shell 7 can be removed.

[0022] Furthermore, the coil 2 is a coil group composed of a plurality of coils.

[0023] Furthermore, the first flange 3, the second flange 4, and the iron core 1 form an I-shaped or I-shaped structure.

[0024] Furthermore, the inductor structure also includes a cover plate, which is bonded to the non-electrode ends of the first flange 3 and the second flange 4 using ultraviolet-curable resin (UV). The cover plate facilitates bonding during surface-mount device (SMD) manufacturing. The cover plate allows the mounting device to easily pick up the inductor structure and attach it to the circuit board surface; therefore, a flat cover plate is typically formed on the non-electrode side of the inductor structure.

[0025] Furthermore, the inductor structure also includes a first protective layer; the first flange 3 and the second flange 4 are not completely embedded within the first protective layer; the first protective layer is any one of ultraviolet-curable resin, insulating resin, or ultraviolet-curable resin and magnetic powder, wherein the insulating resin is an epoxy resin or a polyimide resin. It should be noted that the first protective layer is ultraviolet-curable resin (UV), insulating resin, or ultraviolet-curable resin and magnetic powder. The insulating resin is an epoxy resin or a polyimide resin. The coverage area of ​​the first protective layer includes the first flange 3, the second flange 4, and the core 1, but at most reaches the end face of the first flange 3 and the end face of the second flange 4, without covering the electrodes on the end faces. For example, the first protective layer covers the first flange 3, the second flange 4, and the core 1, but does not cover the positive electrode 5 and the negative electrode 6 on the end faces. This is because the electrodes on the end faces are used to solder onto the circuit board, so they cannot be shielded by the first protective layer.

[0026] Furthermore, the inductor structure also includes a second protective layer; the second protective layer encapsulates the iron core 1; the second protective layer is any one of ultraviolet-cured resin, insulating resin, or magnetic powder, and the insulating resin is an epoxy resin or a polyimide resin.

[0027] Implementation process: A container can be used, for example, a groove is provided on the plate, and the inductor structure is placed in the groove. The UV-curable resin, insulating resin or UV-curable resin and magnetic powder as the first protective layer are injected into the groove for the first time through a dispensing machine. The UV-curable resin will cover the first flange 3, the second flange 4 and the iron core 1, including the coil 2 on the iron core 1. However, the UV-curable resin of the first protective layer cannot completely cover the upper edge of the iron core 1, resulting in a part of the coil 2 not being covered. Therefore, the UV-curable resin as the second protective layer must be injected a second time to completely cover the coil 2.

[0028] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0029] The inductor structure provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An inductor structure, characterized in that, include: Iron core, coil, first flange, second flange, positive pole, negative pole, and protective shell; One end of the iron core is connected to the first flange, and the other end is connected to the second flange; A coil is wound around the outside of the iron core; The two ends of the coil are electrically connected to the positive terminal and the negative terminal, respectively; The protective shell ring is disposed outside the coil and abuts against the first flange and the second flange respectively; The positive electrode and the negative electrode are disposed on the side end of the first flange.

2. The inductor structure according to claim 1, characterized in that, The coil is a coil group consisting of a plurality of coils.

3. The inductor structure according to claim 1, characterized in that, The first flange, the second flange, and the iron core form an I-shaped or I-shaped structure.

4. The inductor structure according to claim 1, characterized in that, The inductor structure also includes a first protective layer; The first and second flanges are not completely embedded within the first protective layer.

5. The inductor structure according to claim 4, characterized in that, The first protective layer is any one of ultraviolet-curable resin, insulating resin, or ultraviolet-curable resin and magnetic powder, wherein the insulating resin is an epoxy resin or a polyimide resin.

6. The inductor structure according to claim 1, characterized in that, The inductor structure also includes a second protective layer; The second protective layer wraps around the iron core.

7. The inductor structure according to claim 6, characterized in that, The second protective layer is any one of ultraviolet-curable resin, insulating resin, or magnetic powder, wherein the insulating resin is an epoxy resin or a polyimide resin.

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