Inductor structure

Abstract

The inductor structure comprises an I-shaped magnetic core, a base, a coil and magnetic glue, the I-shaped magnetic core comprises a middle column, a first end pole plate and a second end pole plate, and the first end pole plate and the second end pole plate are connected to the two ends of the middle column respectively; the base comprises an accommodating groove and a metal terminal, the accommodating groove sleeves the second end pole plate, the metal terminal comprises a main body part, a first extension part and a second extension part which are integrally formed, the main body part is embedded in the bottom of the accommodating groove, and the first extension part penetrates through the bottom surface of the accommodating groove and extends outwards to serve as a pin; the second extending part penetrates through the side face of the containing groove and extends outwards, and the second extending part is provided with a fixing piece. The coil is wound on the middle column according to a preset rule, and the coil is composed of at least one wire; the magnetic glue is coated on the surface of the coil, and two ends of the wire penetrate through the magnetic glue and are respectively placed in the two fixing pieces. According to the scheme, the influence of the arrangement of the pin grooves on the strength of the magnetic core can be avoided.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of inductance, in particular to an inductance structure. BACKGROUND

[0002] In modern electronic devices, the I-shaped winding inductance is widely used due to its good magnetic performance and stable electrical characteristics. The traditional I-shaped winding inductance design usually adopts the way of setting a PIN slot at the bottom of the magnetic core to realize the electrode connection. After winding forming, the wire is fixed in the PIN slot by using soldering, so as to form the electrical connection of the inductance. Although this design meets the basic functions of the inductance to some extent, there are some limitations in actual application.

[0003] For example, the position and structure design of the PIN are affected by various factors, of which the most significant one is the thickness of the PIN slot side. If the thickness of the PIN slot side is too thin, not only the overall strength of the magnetic core will be affected, but also the performance of the inductance under high load or high temperature conditions may be reduced. CONTENT OF THE INVENTION

[0004] The embodiment of the present application provides an inductance structure, which can avoid the influence of the setting of the PIN slot on the strength of the magnetic core.

[0005] The embodiment of the present application provides an inductance structure, which comprises:

[0006] An I-shaped magnetic core, the I-shaped magnetic core comprises a middle column, a first end plate and a second end plate, the first end plate and the second end plate are connected to two ends of the middle column respectively;

[0007] A base, the base comprises a containing slot and a metal terminal, the containing slot is sleeved on the second end plate, the metal terminal comprises an integrally formed main body part, a first extension part and a second extension part, the main body part is embedded in the bottom of the containing slot, the first extension part penetrates through the bottom surface of the containing slot and extends outward to serve as a PIN, the second extension part penetrates through the side surface of the containing slot and extends outward, and the second extension part has a fixing part;

[0008] A coil, the coil is wound on the middle column according to a preset rule, and the coil is composed of at least one wire;

[0009] A magnetic glue, the magnetic glue is coated on the surface of the coil, and two ends of the wire are placed in two fixing parts respectively through the magnetic glue.

[0010] In the inductance structure provided by the embodiment of the present application, the base further comprises at least two protrusions, the protrusions are connected to the outer side of the accommodating groove, the two first extending parts respectively extend to the two protrusions through the bottom surface of the accommodating groove, and the two protrusions cover part of the first extending parts, and the exposed part of the first extending parts is used as a pin.

[0011] In the inductance structure provided by the embodiment of the present application, the surface of the wire is covered with an insulating layer.

[0012] In the inductance structure provided by the embodiment of the present application, the protrusion is integrally formed with the accommodating groove.

[0013] In the inductance structure provided by the embodiment of the present application, the protrusion is integrally formed with the accommodating groove.

[0014] In summary, the inductance structure provided by the embodiment of the present application comprises an I-shaped magnetic core, a base, a coil and magnetic glue, wherein the I-shaped magnetic core comprises a middle column, a first end plate and a second end plate, the first end plate and the second end plate are respectively connected to the two ends of the middle column; the base comprises an accommodating groove and a metal terminal, the accommodating groove is sleeved on the second end plate, the metal terminal comprises an integrally formed main body part, a first extending part and a second extending part, the main body part is embedded in the bottom of the accommodating groove, the first extending part extends outward through the bottom surface of the accommodating groove and is used as a pin, the second extending part extends outward through the side surface of the accommodating groove, and the second extending part has a fixing part; the coil is arranged on the middle column according to a preset rule, the coil is composed of at least one wire; the magnetic glue is coated on the surface of the coil, and the two ends of the wire are respectively placed in the two fixing parts through the magnetic glue. The present scheme sets a base on the second end plate, and then forms a pin on the base, thereby avoiding the influence of the setting of the pin groove on the strength of the magnetic core. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative effort.

[0016] Figure 1 is a structural schematic diagram of the inductance structure provided by the embodiment of the present application.

[0017] Figure 2 is another structural schematic diagram of the inductance structure provided by the embodiment of the present application.

[0018] Figure 3is a structural schematic diagram of a base provided by an embodiment of the present application.

[0019] Figure 4 is a structural schematic diagram of a metal terminal provided by an embodiment of the present application. DETAILED DESCRIPTION

[0020] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The description of the exemplary embodiments is intended to apply to various alternative embodiments as well. The following description is not limited to the exemplary embodiments, but rather, is applicable to any apparatus and / or method which fall within the scope of the present application. Although specific terms are used in the following description for the sake of clarity, these terms are intended to refer only to the particular structure of the embodiments and not to limit the application from that described in the attached claims. The description of the exemplary embodiments is intended to apply to all alternative combinations of structure, use, and / or functions for which the specific implementations described can be substituted.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for describing particular embodiments only and is not intended to be limiting of the application. The use herein of "including", "comprising", "having" and "with" and variations thereof are intended to be broad and encompass the terms "consisting of" and "consisting essentially of" and variations thereof. The use of "including" and "comprising" and variations thereof are intended to be broad and encompass the terms "consisting of" and "consisting essentially of" and variations thereof.

[0022] It will be understood that when an element or layer is referred to as being "on" or "adjacent" or "connected" or "coupled" to another element or layer, it can be directly on, adjacent, connected or coupled to the other element or layer or one or more intervening elements or layers can be present. In contrast, when an element is referred to as being "directly on", "directly adjacent", "directly connected" or "directly coupled" to another element or layer, there are no intervening elements or layers present. It will be understood that, although the terms first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms since the terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. It will be understood that the terms "comprise", "comprising", "comprises", "include", "including", "includes", "contain", "containing", "contains", "characterized by" and variations thereof are used synonymously to designate the presence of the specified features, integers, steps or components but do not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof.

[0023] Spatially relative terms, such as "beneath", "below", "lower", "under", "above", "upper", "over", "on", "side" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is inverted, then a dependent element or feature it is described as "below" or "beneath" another element or feature can be oriented "above" and "over" the other element or feature. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. Additionally, the terms "first", "second", etc. are used herein only to describe different ones of the elements and do not imply or connote relative importance or significance.

[0024] The position and structure design of the PIN are affected by various factors, of which the most significant is the thickness of the PIN slot side. If the thickness of the PIN slot side is too thin, not only the overall strength of the magnetic core will be affected, but also the performance of the inductor under high load or high temperature conditions can be reduced. In addition, although the thin wall design can save materials and reduce weight, it also increases the fragility of the magnetic core during production and use, thereby limiting the application range of the inductor.

[0025] The design of the PIN position is crucial for the matching of the inductor and the circuit board PAD. Due to the structural limitations of the PIN slot, designers often need to consider the strength and stability of the magnetic core when laying out the inductor, which restricts the flexibility and adaptability of the inductor. When the circuit design needs to be adjusted or optimized, the existing inductor structure often cannot meet the rapidly changing market demand.

[0026] Therefore, the embodiments of the present application provide an inductor structure. The technical solutions shown in the present application will be described in detail through specific embodiments. It should be noted that the description order of the following embodiments is not limited as the priority order of the embodiments.

[0027] Please refer to Figures 1-2 , Figure 1 and Figure 2 The inductor structure provided by the embodiments of the present application is shown in the structural schematic diagram. The inductor structure can include an I-shaped magnetic core 10, a base 20, a coil 30 and a magnetic glue 40.

[0028] The material of the I-shaped core 10 can be ferrite or metal powder core material, which has good magnetic properties and low loss. The size and shape of the center column 11, the first end plate 12 and the second end plate 13 can be designed according to the application of the inductor structure and the required magnetic flux. For example, the cross-sectional area of the center column 11 can be designed to be larger to increase the passing capacity of the magnetic flux, and the thickness of the first end plate 12 and the second end plate 13 can be appropriately increased to improve the magnetic conductivity efficiency of the magnetic circuit and reduce the risk of magnetic saturation.

[0029] As shown in Figure 3 and Figure 4 The base 20 includes a receiving groove 21 and a metal terminal 22, the receiving groove 21 is sleeved on the second end plate 13, and the metal terminal 22 includes a one-piece main body portion 220, a first extension portion 221 and a second extension portion 222, the main body portion 220 is embedded in the bottom of the receiving groove 22, the first extension portion 221 extends outward through the bottom surface of the receiving groove 21 to serve as a pin, and the second extension portion 222 extends outward through the side surface of the receiving groove 21.

[0030] In some embodiments, the second extension portion 222 has a fixing member 2221, and the end of the wire 31 is placed in the fixing member 2221 to preliminarily fix the wire 31. The inductor structure can further include a welding member 50 covering the fixing member 2221 and the end of the wire 31. It can be understood that the welding member 50 is formed by welding the end of the wire 31 and the fixing member 2221, which can strengthen the connection strength between the wire 31 and the fixing member 2221. Through the covering of the welding member 50, it can be ensured that the wire 31 will not easily fall off when subjected to tension or vibration, thereby improving the stability and reliability of the entire inductor structure. In addition, the welding member 50 can also play a role in protecting the end of the wire 31 from being eroded or physically damaged by the external environment.

[0031] The coil 30 is wound on the center column 11 according to a predetermined rule, and the coil 30 is composed of at least one wire 31, and the two ends of the wire 31 are connected with the two second extension portions 222, respectively.

[0032] It should be noted that the wire 31 of the coil 30 can be a copper wire or an aluminum wire to provide good electrical conductivity. The diameter of the wire 31 and the number of turns of the coil 30 can be selected according to the intended use of the inductor structure and the required inductance value. In addition, the winding method of the coil 30 can be tight winding or loose winding to adapt to different inductance characteristics and heat management requirements. Tight winding can reduce the capacitive effect between the coils 30, while loose winding can help dissipate heat and prevent overheating. In some cases, in order to further optimize the performance, the wire 31 can be covered with an insulating layer to reduce the leakage between adjacent turns and improve the overall insulation performance.

[0033] In some embodiments, the magnetic glue 40 is coated on the surface of the coil 30 to provide additional electromagnetic shielding effect, reduce electromagnetic interference, and improve the performance stability of the inductor structure. The use of the magnetic glue 40 can also enhance the heat conduction capability of the inductor structure, help dissipate heat, and thus prolong the service life of the inductor structure. In addition, the flexibility of the magnetic glue 40 can absorb mechanical vibrations and reduce changes in inductance value caused by vibrations, ensuring the reliability of the inductor structure in various working environments. At this time, the two ends of the wire 31 can pass through the magnetic glue 40 and be connected to the two second extension parts 222, respectively.

[0034] In the embodiments of the present application, the base 20 further includes at least two bosses 23 connected to the outer side of the accommodating groove 21, and the two first extension parts 221 extend through the bottom surface of the accommodating groove 21 and extend to the two bosses 23, respectively. The two bosses 23 cover part of the first extension part 221, and the exposed part of the first extension part 221 serves as a pin.

[0035] In some embodiments, the bosses 23 are integrally formed with the accommodating groove 21, which can be more convenient to assemble and reduce errors during the assembly process. In addition, the integrally formed structure improves the overall mechanical strength and durability, ensuring that it will not be easily damaged during long-term use. In another embodiment, the bosses 23 can also be bonded to the outer side of the accommodating groove 21 to flexibly adjust the position of the bosses 23.

[0036] In the embodiments of the present application, the material of the bosses 23 and the accommodating groove 21 is an insulating material, such as polyimide, epoxy resin, etc., which not only has good insulation characteristics, but also can withstand certain temperature and mechanical stress. In addition, the thermal expansion coefficient of the insulating material should match the thermal expansion coefficient of the magnetic core and the wire 31 to avoid internal stress when the temperature changes, which can cause damage to the inductor structure. In some specific applications, the insulating material may also need to have flame retardant properties to meet safety standards and regulatory requirements.

[0037] In summary, the inductance structure provided by the embodiments of the present application includes the I-shaped core 10, the base 20, the coil 30 and the magnetic glue 40, wherein the I-shaped core 10 includes a middle column 11, a first end plate 12 and a second end plate 13, the first end plate 12 and the second end plate 13 are respectively connected to two ends of the middle column 11; the base 20 includes a receiving groove 21 and a metal terminal 22, the receiving groove 21 is sleeved on the second end plate 13, the metal terminal 22 includes an integrally formed main body 220, a first extension 221 and a second extension 222, the main body 220 is embedded in the bottom of the receiving groove 21, the first extension 221 extends outward through the bottom surface of the receiving groove 21 to serve as a pin, the second extension 222 extends outward through the side surface of the receiving groove 21, and the second extension 222 has a fixing member 2221; the coil 30 is wound on the middle column 11 according to a preset rule, and the coil 30 is composed of at least one wire 31; the magnetic glue 40 is coated on the surface of the coil 30, and the two ends of the wire 31 are respectively placed in the two fixing members 2221 through the magnetic glue 40. The present application sets the base 20 on the second end plate 13, and then forms the pin on the base 20, so as to avoid the influence of the setting of the pin groove on the strength of the magnetic core, thereby realizing the flexible adjustment of the pin position and fully matching the PAD required by the customer.

[0038] The inductance structure provided by the present application is described in detail above, and the principles and implementation manners of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and application range will be changed, and the above description of the content of the present application should not be understood as the limitation of the present application.

Claims

1. An inductive structure, characterized by The utility model relates to an E-shaped magnetic core, a base and a coil. The E-shaped magnetic core comprises a web, a first end plate and a second end plate, the first end plate and the second end plate are connected to two ends of the web respectively; The base comprises a receiving groove and a metal terminal, the receiving groove is sleeved on the second end plate, the metal terminal comprises a body part, a first extension part and a second extension part, the body part is embedded in the bottom of the receiving groove, the first extension part extends outward through the bottom surface of the receiving groove to serve as a pin, the second extension part extends outward through the side surface of the receiving groove, and the second extension part has a fixing part; The coil is wound on the web according to a preset rule, and the coil is composed of at least one wire; The magnetic glue is coated on the surface of the coil, and the two ends of the wire are placed in the two fixing parts through the magnetic glue respectively.

2. The inductive structure of claim 1, wherein, The base further comprises at least two bosses, the bosses are connected to the outer side of the receiving groove, the two first extension parts extend to the two bosses respectively through the bottom surface of the receiving groove, the two bosses cover part of the first extension parts, and the exposed part of the first extension parts serves as a pin.

3. The inductive structure of claim 1, wherein, The base further comprises a welding part, the welding part covers the fixing part and the end of the wire.

4. The inductive structure of claim 1, wherein, The surface of the wire is covered with an insulating layer.

5. The inductive structure of claim 2, wherein, The bosses are integrally formed with the receiving groove.

6. The inductive structure of claim 2, wherein, The bosses are bonded to the outer side of the receiving groove. The bosses are integrally formed with the receiving groove. The bosses are bonded to the outer side of the receiving groove.

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