Miniature chip inductor

Abstract

The utility model discloses a miniature chip inductor, which relates to the technical field of inductors and comprises a shell, a winding groove is arranged in the shell, a chip coil is spirally wound on the inner side wall of the winding groove, a pin for electric connection is arranged at the end part of the chip coil, a sleeve is rotatably connected in the shell, a magnetic core is movably connected on the inner side of the sleeve, and the magnetic core is arranged in the shell. The magnetic core is positioned in a magnetic core cavity of the sheet type lead coil; the polyester insulating coating coated on the surface of the chip-type wire coil can effectively prevent short circuit and electric leakage and improve safety and reliability of the inductor, ferrite materials are used as the magnetic core, magnetic conductivity of the inductor can be improved, high-frequency loss can be reduced, inductance can be adjusted by adjusting the position of the magnetic core, the application range is wide, and cost is low. The inductor is simple in structure and convenient to use, a user can adjust the inductance value according to actual requirements, the applicability of a product is enhanced, and the inductor shows excellent performance and flexible applicability in various applications through the design.

Description

TECHNICAL FIELD

[0001] The utility model relates to inductor technical field, concretely is a micro -size sheet type inductor. BACKGROUND

[0002] With the development of information technology, people's requirement to electronic component performance is higher and higher, the inductor produced by traditional craft already can not satisfy the need of many electronic products, and electronic component is developing towards miniaturization, high frequency, large power and low power consumption. Sheet type inductor belongs to one kind of sheet type inductor, has the characteristics of low power consumption, large rated current, with its large rated current and excellent dc superposition characteristics, mainly applied to various signal systems, electromagnetic compatibility, noise suppression and electromagnetic interference etc., is the indispensable component of electronic information equipment, and is widely used in smart mobile phone, notebook computer, flat television, power converter and other consumer electronic products, and the market demand is larger and larger. The ordinary sheet type inductor applies multilayer printing process to planarize each turn of inductor coil, and is formed by low-temperature co-firing with soft magnetic ferrite material through laminating process, and the disadvantage is that the dc superposition characteristics of the device is poor, the inductance decreases greatly with the increase of current, and the inductor itself cannot adjust its inductance, which limits its application range.

[0003] Therefore, the person skilled in the art provides a micro-size sheet type inductor to solve the problems in the above background. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a micro-size sheet type inductor to solve the problems in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A micro-size sheet type inductor, comprising a shell, a winding groove is formed in the inside of the shell, a sheet type lead coil is spirally wound on the inner side wall of the winding groove, a pin for electrical connection is arranged at the end of the sheet type lead coil, a sleeve is rotatably connected in the inside of the shell, a magnetic core is movably connected in the inside of the sleeve, and the magnetic core is located in the magnetic core cavity of the sheet type lead coil.

[0007] As a further scheme of the utility model: a spiral arc groove is formed on the surface of the magnetic core.

[0008] As a further scheme of the utility model: a limiting block is fixedly connected to the inner side wall of the sleeve, the limiting block is located in the spiral arc groove, and the limiting block is slidably connected with the spiral arc groove.

[0009] As a further scheme of the utility model: a rotating shaft is fixedly connected to the top end of the sleeve, a knob is rotatably connected to the surface of the shell, and the shaft end of the knob is fixedly connected with the top end of the rotating shaft.

[0010] As a further scheme of the utility model: the surface of the sheet type lead coil is coated with an insulating coating made of polyester material.

[0011] As a further scheme of the utility model: the magnetic core is made of ferrite material.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1. The polyester insulating coating coated on the surface of the sheet type lead coil can effectively prevent short circuit and electric leakage, improve the safety and reliability of the inductor, the ferrite material is used as the magnetic core, which can not only improve the magnetic permeability of the inductor, but also reduce the high frequency loss, ensure the stability in high frequency application, the user can rotate the knob to drive the rotating shaft to rotate, the rotating shaft drives the sleeve to rotate, the sleeve rotates under the action of the limiting block and the spiral arc groove, so that the magnetic core moves, the position of the magnetic core relative to the sheet type lead coil changes, with the deepening of the magnetic core, the magnetic flux density generated in the sheet type lead coil increases, so that the magnetic flux generated under the unit current increases, thereby improving the inductance, the inductance can be adjusted by adjusting the position of the magnetic core, the application range is wide, and the inductor is convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of a micro sheet type inductor.

[0015] Figure 2 It is a plan structure schematic view of a micro sheet type inductor.

[0016] Figure 3 It is a sectional view of a micro sheet type inductor.

[0017] Figure 4 It is a plan structure schematic view of the magnetic core in a micro sheet type inductor.

[0018] In the drawing: 1, shell; 2, winding groove; 3, sheet type lead coil; 4, pin; 5, sleeve; 6, magnetic core; 7, spiral arc groove; 8, limiting block; 9, rotating shaft; 10, knob. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection range of the utility model.

[0020] Embodiment 1

[0021] With reference to Figures 1-4 The embodiment provides a micro chip inductor, which comprises a shell 1, a winding groove 2 is formed in the shell 1, a chip coil 3 is spirally wound on the inner side wall of the winding groove 2, a pin 4 for electrical connection is arranged at the end of the chip coil 3, a sleeve 5 is rotationally connected in the shell 1, a magnetic core 6 is movably connected to the inner side of the sleeve 5, the magnetic core 6 is located in the magnetic core 6 cavity of the chip coil 3, a spiral arc groove 7 is formed in the surface of the magnetic core 6, a limiting block 8 is fixedly connected to the inner side wall of the sleeve 5, the limiting block 8 is located in the spiral arc groove 7 and is slidably connected with the spiral arc groove 7, a rotating shaft 9 is fixedly connected to the top end of the sleeve 5, a knob 10 is rotationally connected to the surface of the shell 1, the shaft end of the knob 10 is fixedly connected with the top end of the rotating shaft 9, the surface of the chip coil 3 is coated with an insulating coating made of polyester material, and the magnetic core 6 is made of ferrite material; the polyester insulating coating coated on the surface of the chip coil 3 can effectively prevent short circuit and electric leakage, improve the safety and reliability of the inductor, the ferrite material is used as the magnetic core 6, so that the magnetic permeability of the inductor can be improved, high-frequency loss can be reduced, and the stability of the inductor in high-frequency application can be ensured; the user can rotate the knob 10 to drive the rotating shaft 9 to rotate, the rotating shaft 9 drives the sleeve 5 to rotate, the sleeve 5 rotates under the action of the limiting block 8 and the spiral arc groove 7, so that the magnetic core 6 moves, the position of the magnetic core 6 relative to the chip coil 3 changes, the magnetic flux density generated in the chip coil 3 increases with the deepening of the magnetic core 6, the magnetic flux generated under unit current increases, and thus the inductance is improved; the inductance can be adjusted by adjusting the position of the magnetic core 6, the application range is wide, the inductor is convenient to use, the user can adjust the inductance value according to actual needs, the applicability of the product is enhanced, and the inductor exhibits excellent performance and flexible applicability in various applications.

[0022] It is apparent for those skilled in the art that the present application is not limited to the details of the foregoing exemplary embodiments, and the present application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the foregoing embodiments should be considered in all aspects as exemplary and not restrictive, and the scope of the present application is defined by the appended claims rather than the foregoing description, and thus all changes falling within the meaning and range of equivalents of the elements of the claims are intended to be embraced by the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0023] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.

Claims

1. A microchip inductor, characterized by, The utility model relates to a magnetic core and sheet type coil, including shell (1), the inside of shell (1) is opened with wire slot (2), the inside wall spiral winding of wire slot (2) is connected with sheet type coil (3), sheet type coil (3) end is provided with the pin (4) for electric connection, the inside rotationally connected with sleeve (5) of shell (1), sleeve (5) inside movable joint has the magnetic core (6), and the magnetic core (6) is located in the magnetic core (6) cavity of sheet type coil (3).

2. A microchip inductor as claimed in claim 1, wherein The surface of the magnetic core (6) is provided with a spiral arc groove (7).

3. A microchip inductor as claimed in claim 1, wherein The inside wall of the sleeve (5) is fixedly connected with a limiting block (8), the limiting block (8) is located in the spiral arc groove (7), and the limiting block (8) is slidably connected with the spiral arc groove (7).

4. A microchip inductor as claimed in claim 1, wherein The top end of the sleeve (5) is fixedly connected with a rotating shaft (9), the surface of the shell (1) is rotatably connected with a knob (10), and the shaft end of the knob (10) is fixedly connected with the top end of the rotating shaft (9).

5. A microchip inductor as claimed in claim 1, wherein The surface of the sheet type coil (3) is coated with an insulating coating made of polyester material.

6. A microchip inductor as claimed in claim 1, wherein The magnetic core (6) is made of ferrite material.

Images