Patch type magnetic ring inductor

Abstract

The utility model belongs to communication equipment technical field discloses patch type magnetic ring inductance, including pad base, magnetic ring coil, the pad base is made by at least four pad feet through injection moulding, and pad foot is formed by copper metal sheet through hardware die stamping cutting, the magnetic ring coil contains magnetic ring and the first coil and the second coil that wind on it, the utility model discloses, through adopting pad base instead of traditional pin winding structure, combines the foot welding process, has simplified production technology obviously, has improved the degree of automation, has reduced manual intervention to improve production efficiency greatly and reduce production cost. Pad base is composed of at least four pad feet, these pad feet are fixed on a common base through injection moulding, and the overall mechanical stability of inductor is enhanced. At the same time, this structure also improves the quality of electrical connection, ensures better electrical performance.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication devices, in particular to a patch type magnetic ring inductor. BACKGROUND

[0002] In modern electronic devices, inductors are one of the indispensable components, which are widely used in power conversion, filtering, matching network and other circuits. Due to the limitations of structure and production process, the traditional plug-in magnetic ring inductor usually needs to be manually or semi-automatically soldered when mounted on a printed circuit board (PCB), which not only increases the manufacturing cost, but also reduces the production efficiency, and is prone to introduce problems such as poor soldering. In addition, the pin winding structure in the traditional design makes the automatic assembly complex, which is difficult to meet the assembly requirements of current high-density and miniaturized electronic products. CONTENT OF THE UTILITY MODEL

[0003] The technical problem to be solved by the present utility model is to overcome the deficiencies of the prior art and provide a patch type magnetic ring inductor, aiming to solve the problems in the background art.

[0004] In order to achieve the above-mentioned utility model purposes, the present utility model proposes a patch type magnetic ring inductor in the first aspect, which comprises a solder pad base and a magnetic ring coil.

[0005] The solder pad base is made of at least four solder pad pins by injection molding, and the solder pad pins are formed by stamping and cutting of copper metal sheets through hardware molds.

[0006] The magnetic ring coil comprises a magnetic ring and a first coil and a second coil wound thereon.

[0007] Optionally, the solder pad base is used for soldering assembly with the solder pad on the printed circuit board, which improves the problems of high complexity and low efficiency of the plug-in process in the prior art.

[0008] Optionally, the solder pad base comprises a base and solder pad pins A and B connected to the base, which is used to enhance the mechanical stability and electrical performance of the inductor.

[0009] Optionally, it further comprises a shielding cover, and the shielding cover is matched and installed on the base, which can further improve the electromagnetic compatibility performance of the inductor.

[0010] Optionally, the magnetic ring is made of high permeability material to improve the working efficiency of the inductor, and the first coil and the second coil are wound in a multi-strand fine wire manner to increase the current carrying capacity and reduce the high frequency loss.

[0011] ADVANTAGEOUS EFFECTS

[0012] 1. The patch type magnetic ring inductor of the utility model, through adopting the soldering pad base instead of the traditional pin winding structure, combining the foot bending welding process, the production process is simplified obviously, the automation degree is improved, manual intervention is reduced, thereby the production efficiency is improved greatly and the production cost is reduced. The soldering pad base is composed of at least four soldering pad feet, the soldering pad feet are fixed on a common base through injection molding, the overall mechanical stability of the inductor is enhanced. At the same time, this structure also improves the quality of electrical connection, ensures better electrical performance. The product design allows using the chip mounter to carry out full-automatic patching operation, the patching speed is fast, the efficiency is high, the good product rate is high. In addition, the soldering pad position precision requirement on the PCBA is lower, so that the patching process is more flexible and simple.

[0013] 2. The patch type magnetic ring inductor of the utility model further improves the electromagnetic compatibility of the inductor by adopting the shielding cover, effectively isolates external interference, and prevents internal electromagnetic field leakage, protects the normal work of surrounding electronic components, and is especially suitable for environments with strict EMC requirements. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 is the explosion schematic view of the patch type magnetic ring inductor provided by one exemplary embodiment of the disclosure;

[0015] Fig. 2 is the assembly schematic view of the patch type magnetic ring inductor provided by one exemplary embodiment of the disclosure;

[0016] Fig. 3 is the bottom view schematic view of the patch type magnetic ring inductor provided by one exemplary embodiment of the disclosure.

[0017] BRIEF DESCRIPTION OF DRAWINGS

[0018] 1, base; 2, soldering pad foot A; 3, soldering pad foot B; 4, magnetic ring; 5, first coil; 6, second coil; 7, shielding cover.

[0019] The realization, functional characteristics and advantages of the utility model will be further explained by combining with the embodiments and referring to the drawings. DETAILED DESCRIPTION

[0020] It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly and specifically defined.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] Reference Figs. 1-3 An embodiment of the present invention provides an embodiment of a surface-mount magnetic ring inductor, including a pad base and a magnetic ring coil;

[0025] The pad base is made of at least four pad feet by injection molding, and the pad feet are formed by stamping and cutting copper metal sheets using a hardware mold;

[0026] The magnetic ring coil comprises a magnetic ring 4 and a first coil 5 and a second coil 6 wound thereon.

[0027] In some embodiments, the pad base is used for solder assembly with the pads on the printed circuit board, improving the problems of high complexity and low efficiency of the plug-in process in the prior art. The pad base comprises a base 1 and pad pins A2 and B3 connected to the base 1, for enhancing the mechanical stability and electrical performance of the inductor.

[0028] Further, the magnetic ring 4 is made of high permeability material to improve the working efficiency of the inductor, and the first coil 5 and the second coil 6 are wound in a multi-strand fine wire winding manner to increase the current carrying capacity and reduce the high frequency loss.

[0029] It should be noted that the pad base uses copper sheet as the material, which is cut by stamping and cutting through hardware molds to form pad pins. Each pad pin is designed to have a shape and size suitable for subsequent injection molding.

[0030] At least four such pad pins are placed in the mold, and then injection molding is performed using appropriate plastic materials, so that the pad pins are firmly fixed on a common base 1, thereby forming the pad base.

[0031] The magnetic ring coil uses a material with high permeability to make the magnetic ring 4, which ensures that it can effectively guide the magnetic field and improve the working efficiency of the inductor. The first coil 5 and the second coil 6 are wound on the magnetic ring 4 in a multi-strand fine wire winding manner. This manner not only increases the current carrying capacity, but also reduces the loss at high frequency.

[0032] After the pad base is prepared, the magnetic ring coil is installed on the base 1, ensuring that the first coil 5 and the second coil 6 are correctly connected to the corresponding pad pins A2 and B3.

[0033] Further, the folding pin welding process is used instead of the traditional winding pin structure, which simplifies the production process, improves the production efficiency, and reduces the defect rate. This step is completed by automated equipment to ensure speed and accuracy.

[0034] In order to further improve the electromagnetic compatibility performance of the inductor, a shielding cover 7 is installed on the base 1 in this embodiment.

[0035] In specific applications, when an alternating current or pulsed direct current power source is connected to the patch-type magnetic ring inductor, current begins to flow through the first coil 5 and the second coil 6. With the change of current, according to Ampere's law, a corresponding magnetic field is generated inside the magnetic ring 4. The material of the magnetic ring 4 has high magnetic permeability, which can effectively guide and concentrate the magnetic field. Therefore, most of the magnetic field is confined inside the magnetic ring 4, so that the magnetic energy is concentrated in a smaller space, improving the energy storage efficiency. According to Faraday's law of electromagnetic induction, when the magnetic flux changes, an induced electromotive force will be generated across the two ends of the coil. If the current is alternating, an induced voltage will be continuously generated across the two ends of the coil, thereby achieving power supply or signal transmission to other components in the circuit. The pad base not only provides physical support, but also realizes more reliable electrical connection through improved pad structure design, enhances the overall mechanical stability and electrical performance of the inductor, and ensures stable operation for a long time.

[0036] The above only describes the preferred embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which is based on the content of the present application specification and drawings, is also included in the patent protection scope of the present application.

Claims

1. A patch magnetic toroid inductor, characterized in that, The invention relates to a magnetic inductor, comprising a pad base, a magnetic ring coil; The pad base is made of at least four pad feet by injection molding, and the pad feet are formed by stamping and cutting copper metal sheets through hardware molds; The magnetic ring coil comprises a magnetic ring (4) and a first coil (5) and a second coil (6) wound thereon.

2. The patch inductor of claim 1, wherein, The pad base is used for welding assembly with the pads on the printed circuit board.

3. The patch inductor of claim 1, wherein: The pad base comprises a base (1) and pad feet A (2) and pad feet B (3) connected to the base, for enhancing the mechanical stability and electrical performance of the inductor.

4. The patch inductor of claim 1, wherein, It also comprises a shielding cover (7) which is matched and installed on the base (1).

5. The patch inductor of claim 1, wherein, The magnetic ring (4) is made of high permeability material, and the first coil (5) and the second coil (6) are wound in a multi-strand fine wire manner, for increasing current carrying capacity and reducing high frequency loss.

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