An inductor coil

Abstract

The utility model discloses an inductor coil, including a conductor coil, a magnetic core, and a magnetic sheet. The conductor coil is wound around the outer periphery of the magnetic core, and two terminals are formed after the conductor coil is wound. The magnetic sheet and the magnetic core are detachably matched, and the magnetic sheet extends circumferentially and axially from the first end of the magnetic core, wherein the first end is an end of the magnetic core away from the terminal. By superimposing a magnetic sheet on the first end of the magnetic core away from the terminal of the conductor coil, the present application can enhance the magnetic field concentration effect of the magnetic core based on the magnetic sheet, improve the overall magnetic permeability of the magnetic core, so that the magnetic field in the conductor coil can be more effectively conducted through the magnetic core, and improve the overall magnetic induction intensity and magnetic inductance of the inductor coil. Moreover, in the present application, the magnetic sheet and the magnetic core are detachably matched, and the superimposed magnetic inductance of the magnetic core and the magnetic sheet can be adjusted by adjusting the shape or size of the magnetic sheet to adapt to different electronic devices.

Description

Technical Field

[0001] The utility model belongs to the technical field of inductor coils, and in particular relates to an inductor coil. Background Art

[0002] An inductor is a component composed of a wire or a coil, used to store and transmit electrical energy. Magnetic inductance is an important performance indicator of an inductor, which directly affects the inductance and magnetic field conduction effect of the coil. However, the magnetic inductance of the magnetic core of the inductor in the prior art is low and cannot meet the magnetic induction requirements of different electronic devices. Utility Model Content

[0003] In view of the deficiencies of the prior art, the purpose of the utility model is to provide an inductor coil to solve the problems of low magnetic inductance and poor adaptability to different electronic devices in the prior art.

[0004] The inductor coil of the present application includes a conductor coil, a magnetic core, and a magnetic sheet. The conductor coil is wound around the outer circumference of the magnetic core. Two terminals are formed after the conductor coil is wound. The magnetic sheet is detachably matched with the magnetic core. The magnetic sheet extends circumferentially and axially from a first end of the magnetic core, wherein the first end is an end of the magnetic core away from the terminal.

[0005] In an implementable solution, the magnetic sheet is glued to the first end of the magnetic core.

[0006] In an implementable solution, the cross-sectional shape of the magnetic core is the same as the cross-sectional shape of the magnetic sheet.

[0007] In an implementable solution, the relationship between the cross-sectional areas of the magnetic core and the magnetic sheet on parallel planes is that the cross-sectional area of ​​the magnetic core is smaller than the cross-sectional area of ​​the magnetic sheet.

[0008] In yet another feasible solution, the magnetic core is a cylindrical structure, the magnetic sheet is a cylindrical structure, and the end surface of the first end portion of the magnetic core is in contact with the upper surface of the magnetic sheet.

[0009] In yet another feasible solution, the magnetic core is a cylindrical structure, the magnetic sheet is a circular ring structure, and the circular ring inner circumference of the magnetic sheet is in contact with the cylindrical outer circumference of the magnetic core.

[0010] In another feasible scheme, the circumferential surface of the first end of the magnetic core protrudes outwardly with a first boss or is recessed inwardly with a first groove, the inner circumferential surface of the circular ring of the magnetic sheet is recessed outwardly with a second groove matching the first boss, or the inner circumferential surface of the circular ring of the magnetic sheet protrudes outwardly with a second boss matching the first groove.

[0011] In an implementable solution, the magnetic core is any one of an iron core, a ferrite, or an alloy.

[0012] In an implementable solution, the conductor coil is any one of a copper conductor, an aluminum conductor, or an alloy conductor.

[0013] The utility model discloses an inductor coil, a conductor coil, a magnetic core, and a magnetic sheet. The conductor coil is wound around the outer periphery of the magnetic core, and two terminals are formed after the conductor coil is wound. The magnetic sheet is detachably matched with the magnetic core, and the magnetic sheet extends circumferentially and axially from the first end of the magnetic core, wherein the first end is an end of the magnetic core away from the terminal. By superimposing a magnetic sheet on the first end of the magnetic core away from the terminal of the conductor coil, the present application can enhance the magnetic field concentration effect of the magnetic core based on the magnetic sheet, improve the overall magnetic permeability of the magnetic core, so that the magnetic field in the conductor coil can be more effectively conducted through the magnetic core, and improve the overall magnetic induction intensity and magnetic inductance of the inductor coil. Moreover, in the present application, the magnetic sheet and the magnetic core are detachably matched, and the superimposed magnetic inductance of the magnetic core and the magnetic sheet can be adjusted by adjusting the shape or size of the magnetic sheet to adapt to different electronic devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0015] Figure 1 It is a structural schematic diagram of the inductor coil described in the utility model;

[0016] Figure 2 It is a planar schematic diagram of the inductor coil described in the utility model;

[0017] In the figure, 1-conductor coil, 11-terminal, 2-magnetic core, 3-magnetic sheet. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In view of the deficiencies of the prior art, the purpose of the utility model is to provide an inductor coil to solve the problems of low magnetic inductance and poor adaptability to different electronic devices in the prior art.

[0020] Specifically, Figure 1 and Figure 2As shown, the inductor coil of the present application includes a conductor coil 1, a magnetic core 2, and a magnetic sheet 3. The conductor coil 1 is wound around the outer periphery of the magnetic core 2. After the conductor coil 1 is wound, two terminals 11 are formed. The magnetic sheet 3 is detachably matched with the magnetic core 2. The magnetic sheet 3 extends circumferentially and axially from the first end of the magnetic core 2, wherein the first end is an end of the magnetic core 2 away from the terminal 11. In an operative scheme, the magnetic sheet 3 is glued to the first end of the magnetic core 2. Exemplarily, the adhesive can be an epoxy resin adhesive, which has high adhesion and magnetic resistance. It is understandable that before gluing the magnetic core 2 and the magnet, it is necessary to ensure that the surface of the magnetic sheet 3 is clean, dust-free and grease-free. The surface can be wiped with a detergent or alcohol and ensured to be thoroughly dried. After gluing, moderate pressure can be applied to help ensure that the adhesive is fully in contact and provides good bonding. A clamp, a heavy object or a pressure tool can be used to apply appropriate pressure according to the requirements of the adhesive. If the magnetic sheet 3 needs to be replaced, the adhesive can be melted and the magnetic sheet 3 can be replaced.

[0021] It is understandable that the inductor is a component that can generate an induced electromotive force. By adding a magnetic sheet 3 to the first end of the inductor away from the terminal of the coil, the strength of the magnetic field can be enhanced, thereby increasing the magnitude of the induced electromotive force. This is very beneficial for some applications that require higher induced electromotive force, such as electromagnetic induction sensors, generators, etc. Further, the inductance of the inductor is related to the structure of the coil itself and the magnetic field strength. By adding a magnetic sheet 3, the strength of the magnetic field can be increased, thereby improving the efficiency of the inductor. This helps to improve the performance of the inductor in the circuit, such as increasing the inductance value, improving the frequency response, etc. Further, in some applications, the external magnetic field may interfere with the normal operation of the inductor. By adding a magnetic sheet 3 to the end of the inductor away from the terminal, a magnetic shield can be formed to suppress the interference of the external magnetic field. When the inductor is applied to sensors and communication systems, the signal-to-noise ratio of the inductor can be improved.

[0022] In one example, the conductor coil 1 can be any one of a copper conductor, an aluminum conductor, or an alloy conductor. The conductor coil 1 has good electrical conductivity and magnetic conductivity. The winding method of the conductor coil 1 can be spiral, flat, annular, etc., and the specific form depends on the application requirements. Further, after the conductor coil 1 is wound, two terminals 11 are formed for connecting to the circuit. Further, the magnetic core 2 can be any one of an iron core, a ferrite, or an alloy. The magnetic core 2 is used to enhance the strength of the magnetic field and concentrate the magnetic field lines.

[0023] In this example, by attaching the magnetic sheet 3 to the first end of the magnetic core 2, the external magnetic field to which the conductor coil 1 is subjected can be enhanced. The magnetic field of the magnetic sheet 3 interacts with the magnetic field in the conductor coil 1, resulting in an increase in the magnetic field strength in the conductor coil 1. Since the magnetic induction intensity is proportional to the magnetic field intensity, the magnetic induction intensity in the conductor coil 1 will also increase, thereby increasing the magnetic induction of the conductor coil 1. As shown in Table 1 below, the magnetic induction of the structure of the present application is increased compared to the magnetic induction in the prior art.

[0024]

[0025] Table 1

[0026] In an operative solution, the cross-sectional shape of the magnetic core 2 is the same as the cross-sectional shape of the magnetic sheet 3. Preferably, the magnetic core 2 is a cylindrical structure, the magnetic sheet 3 is a cylindrical structure, and the end face of the first end of the magnetic core 2 is in contact with the upper surface of the magnetic sheet 3. It is understandable that a circular magnetic sheet 3 is selected to match the first end of the cylindrical magnetic core 2. This ensures that the magnetic sheet 3 is in good contact with the first end of the magnetic core 2 and provides a uniform magnetic field distribution. It is understandable that the magnetic core 2 may also be a rectangular column structure or a hexagonal column structure or a column of other shapes, which is not specifically limited here.

[0027] In an implementable solution, the relationship between the cross-sectional areas of the magnetic core 2 and the magnetic sheet 3 on parallel planes is that the cross-sectional area of ​​the magnetic core 2 is smaller than the cross-sectional area of ​​the magnetic sheet 3 .

[0028] In another feasible solution, the cross-sectional shape of the magnetic core 2 may be different from the cross-sectional shape of the magnetic sheet 3. Preferably, in one example, the magnetic core 2 is a cylindrical structure, and the magnetic sheet 3 is a circular ring structure, and the circular ring inner circumference of the magnetic sheet 3 is in contact with the cylindrical outer circumference of the magnetic core 2. It is understandable that the circular ring structure magnetic sheet 3 is an annular magnetic sheet 3, and the inner diameter matches the diameter of the first end of the cylindrical magnetic core 2. After the circular ring structure magnetic sheet 3 matches the first end of the magnetic core 2, a larger contact area and a better magnetic field conduction effect can be provided.

[0029] It is understandable that when selecting the shape of the magnetic sheet 3, in addition to matching the first end edge of the magnetic core 2, the size and magnetic field strength of the magnetic sheet 3 also need to be considered. Ensure that the magnetic sheet 3 can provide sufficient magnetic field concentration effect and fit closely with the magnetic core 2 to enhance the magnetic inductance of the coil. The specific design and selection also need to consider factors such as the characteristics of the material of the magnetic core 2 and the operating frequency of the coil.

[0030] In another feasible solution, the circumferential surface of the first end of the magnetic core 2 protrudes outward with a first boss or is recessed inward with a first groove, and the inner circumferential surface of the ring of the magnetic sheet 3 is recessed outward with a second groove matching the first boss, or the inner circumferential surface of the ring of the magnetic sheet 3 protrudes outward with a second boss matching the first groove. It can be understood that by setting the first boss to match the second groove and setting the second boss to match the first groove, the detachable matching of the magnetic sheet 3 and the magnetic core 2 can be facilitated, and the replacement of the magnetic sheet 3 can be facilitated to meet the needs of different electronic devices.

[0031] The utility model discloses an inductor coil, a conductor coil 1, a magnetic core 2, and a magnetic sheet 3. The conductor coil 1 is wound around the outer periphery of the magnetic core 2. After the conductor coil 1 is wound, two terminals 11 are formed. The magnetic sheet 3 and the magnetic core 2 are detachably matched. The magnetic sheet 3 extends circumferentially and axially from the first end of the magnetic core 2, wherein the first end is an end of the magnetic core 2 away from the terminal 11. By superimposing the magnetic sheet 3 on the first end of the magnetic core 2, the present application can enhance the magnetic field concentration effect of the magnetic core 2 based on the magnetic sheet 3, improve the overall magnetic permeability of the magnetic core 2, so that the magnetic field in the conductor coil 1 can be more effectively conducted through the magnetic core 2, and improve the overall magnetic induction intensity and magnetic inductance of the inductor coil. Moreover, in the present application, the magnetic sheet 3 and the magnetic core 2 are detachably matched, and the superimposed magnetic inductance of the magnetic core and the magnetic sheet 3 can be adjusted by adjusting the shape or size of the magnetic sheet 3 to adapt to different electronic devices.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An inductor coil, characterized in that: include: A conductor coil (1), a magnetic core (2), and a magnetic sheet (3), wherein the conductor coil (1) is wound around the outer periphery of the magnetic core (2), and after the conductor coil (1) is wound, two terminals (11) are formed, and the magnetic sheet (3) and the magnetic core (2) are detachably matched, and the magnetic sheet (3) extends circumferentially and axially from a first end of the magnetic core (2), wherein the first end is an end of the magnetic core (2) away from the terminal (11).

2. The inductor according to claim 1, characterized in that: The magnetic sheet (3) is glued to the first end of the magnetic core (2).

3. The inductor according to claim 1 or 2, characterized in that: The cross-sectional shape of the magnetic core (2) is the same as the cross-sectional shape of the magnetic sheet (3).

4. The inductor according to claim 3, characterized in that: The relationship between the cross-sectional areas of the magnetic core (2) and the magnetic sheet (3) on parallel planes is that the cross-sectional area of ​​the magnetic core (2) is smaller than the cross-sectional area of ​​the magnetic sheet (3).

5. The inductor according to claim 4, characterized in that: The magnetic core (2) is a cylindrical structure, the magnetic sheet (3) is a cylindrical structure, and the end surface of the first end of the magnetic core (2) is in contact with the upper surface of the magnetic sheet (3).

6. The inductor according to claim 2, characterized in that: The magnetic core (2) is a cylindrical structure, the magnetic sheet (3) is a circular ring structure, and the circular ring inner circumference of the magnetic sheet (3) is in contact with the cylindrical outer circumference of the magnetic core (2).

7. The inductor according to claim 2, characterized in that: The circumferential surface of the first end of the magnetic core (2) protrudes outwardly with a first boss or is recessed inwardly with a first groove, and the inner circumferential surface of the circular ring of the magnetic sheet (3) is recessed outwardly with a second groove matching the first boss, or the inner circumferential surface of the circular ring of the magnetic sheet (3) protrudes outwardly with a second boss matching the first groove.

8. The inductor according to claim 7, characterized in that: The magnetic core (2) is any one of an iron core, a ferrite, or an alloy.

9. The inductor according to claim 1, characterized in that: The conductor coil (1) is any one of a copper conductor, an aluminum conductor or an alloy conductor.

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