CN220691850U

CN220691850U - Improved miniature inductor

Info

Publication number: CN220691850U
Application number: CN202322343628.9U
Authority: CN
Inventors: 陈迪
Original assignee: Shenzhen Jializhi Technology Co ltd
Current assignee: Shenzhen Jializhi Technology Co ltd
Priority date: 2023-08-30
Filing date: 2023-08-30
Publication date: 2024-03-29
Anticipated expiration: 2033-08-30

Abstract

The utility model discloses an improved miniature inductor, which comprises an inductor body and a coil sealed in the inductor body, wherein the coil is positioned at the central position inside the inductor body, the coil is provided with two pins, the pins are bent and arranged, the side surfaces of the pins are pressed to form electrode surfaces, the electrode surfaces are exposed on the same plane of the inductor body, the plane corresponding to the electrode surfaces is provided with an electroplated layer, the two electrode surfaces are positioned on one plane of the inductor, the electroplating of the electrode surfaces only increases the thickness of one surface of the bottom surface of the inductor, compared with the prior art, the integral volume of the inductor is greatly reduced, the production cost is saved, the installation size of a product on a circuit board is reduced, the installation space of an integrated circuit PCB (printed circuit board) is increased, the comprehensive performance of the product is greatly improved by the installation of more inductors under the condition that the size of the circuit board is the same, in addition, the electroplated area has one area of the bottom surface of the inductor, and the production cost is low.

Description

Improved miniature inductor

Technical Field

The utility model belongs to the technical field of inductance coils, and particularly relates to an improved miniature inductor.

Background

The current miniature inductor leads out the motor that two joint cross-sections formed to the inductance and exposes to two opposite sides of inductance, because the inductance welds when on the circuit board needs to form electric connection to two electrodes, generally need electroplate one deck metal conductive layer at the electrode surface, metal conductive layer forms electric connection with two electrodes of coil respectively from the side of inductance, further connect to the inductance bottom surface, inductance bottom surface welds on the circuit board and communicates coil electrode and circuit board, that is to say the electroplating area of metal conductive layer includes two sides that expose two electrodes and a bottom surface of welded circuit board, and generally metal conductive layer need electroplate through at least both sides and form, be formed with certain thickness on three faces of inductance, can lead to inductance whole volume too big like this, this inductance welds on the circuit board and leads to integrated circuit density to be little, waste circuit board space, and metal conductive layer's face area is big, and manufacturing cost is high.

Disclosure of Invention

(1) Technical problem to be solved

Aiming at the defects of the prior art, the utility model aims to provide an improved miniature inductor, which aims to solve the technical problems of high production cost and large volume of the miniature inductor in the prior art.

(2) Technical proposal

The utility model provides an improved miniature inductor which comprises an inductor body and a coil sealed in the inductor body, wherein the coil is positioned at the central position inside the inductor body and is provided with two pins, the pins are bent and arranged, the side surfaces of the pins are pressed to form electrode surfaces, the electrode surfaces are exposed on the same plane of the inductor body, and a plating layer is arranged on a plane corresponding to the electrode surfaces.

Further, the inductor body is integrally formed around the coil in a pressing mode.

Further, the inductor body is cuboid.

Further, the coil is a double-layer coil.

Further, the pin includes the first bending portion of being connected with integrated into one piece of coil, from connecting portion to the extension of weld direction extension and be used for welded second bending portion, first bending portion, extension and second extension integrated into one piece set up, the length of extension is greater than coil height.

Further, the second bending part is a pin tail end, the side edge of the second bending part is pressed and formed into an electrode surface, two supporting tables are arranged on the outer surface of the inductor body in a downward protruding mode, and the electrode surfaces on the two second extending parts are exposed at the bottoms of the supporting tables.

Further, the bottom of the supporting table is provided with an electroplated layer, and the electroplated layer is welded and fixed on the PCB.

(3) Advantageous effects

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

the two electrode surfaces are positioned on one plane of the inductor, the electroplating of the electrode surfaces only increases the thickness of one surface of the bottom surface of the inductor, compared with the prior art, the integral volume of the inductor is greatly reduced, the production cost is saved, the installation size of a product on a circuit board is reduced, the installation space of the PCB of an integrated circuit is increased, the advantage is created for the highly integrated development of the integrated circuit industry, the installation of more inductors can greatly improve the comprehensive performance of the product under the condition that the sizes of the circuit boards are the same, in addition, the electroplating area only has one area of the bottom surface of the inductor, and the production cost is low.

Drawings

Fig. 1 is a bottom view of an electrode surface of the present utility model without a plating layer plated thereon.

FIG. 2 is a cross-sectional view taken at A-A in FIG. 1.

Fig. 3 is a perspective view of the coil of the present utility model.

Fig. 4 is a front view of the coil of the present utility model.

Reference numerals: 1-an inductor body; 11-a support table; a 2-coil; 3-pins; 31-a first fold; 32-extensions; 33-a second fold; 331-electrode face.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

Please refer to fig. 1-4;

the utility model provides an improved miniature inductor, which comprises an inductor body 1 and a coil 2 sealed in the inductor body 1, wherein the coil 2 is positioned at the inner central position of the inductor body 1, the coil 2 is provided with two pins 3, the pins 3 are bent and arranged, the side surfaces of the pins 3 are pressed to form an electrode surface 331, the electrode surface 331 is exposed on the same plane of the inductor body 1, and a plating layer is arranged on the plane corresponding to the electrode surface 331.

In the utility model, the inductance body 1 is integrally pressed around the coil 2, and during production, firstly, wires are wound to form the coil 2, wherein the wires used by the coil 2 can be enameled flat copper wires, enameled round copper wires or other metal wires with good wire performance, two pins 3 of the coil 2 are further bent, then a winding jig containing the coil 2 is put into a forming die of a forming machine, the coil 2 is implanted into a die cavity at fixed points, and then, after the die cavity is filled with metal soft magnetic powder, products are punched and formed, so that the inductance body 1 wrapping the coil 2 is formed.

It is to be noted that, in the utility model, the inductor body 1 is in a cuboid shape, and by arranging the cuboid inductor body 1, when the metal soft magnetic powder is stamped and formed, the regular forming shape enables the stress to be uniform everywhere, and the problem that the coil 2 inside the inductor body is extruded and deformed to cause defective products to be produced is avoided.

In order to enable the pins 3 of the coil 2 to be located on the same side, the coil 2 in the utility model adopts the double-layer coil 2, and compared with the two pins 3 of the single-layer coil 2 which are respectively located at the upper end and the lower end of the coil 2, the bending processing of the pins 3 is troublesome in corresponding to different directions and bending angles, and the pins 3 of the double-layer coil 2 are located on the same end, so that the bending angles and directions are consistent, and the coil 2 is convenient to process.

As shown in fig. 2 to 4, the lead 3 in the present utility model includes a first bent portion 31 integrally connected with the coil 2, an extension portion 32 extending from the first bent portion 31 toward the welding portion, and a second bent portion 33 for welding, wherein the first bent portion 31, the extension portion 32, and the second extension portion 32 are integrally formed and provided with an overall length greater than the height of the coil 2, so that the first bent portion 31, the second bent portion 33, and the extension portion 32 of the lead 3 are distributed on the side of the coil 2, and support the coil 2 at the inner center position of the inductor body 1, which is advantageous for miniaturization of the inductor.

When the pin 3 of the coil 2 is bent, the first bending portion 31 close to the connecting portion of the coil 2 is bent first, the pin 3 extends from one end of the coil 2 to the other end to form an extension portion 32, at this time, the extension portion 32 is parallel to the radial cross section of the wire, that is, at this time, the radial cross section of the pin 3 is parallel to the bottom surface to be welded of the inductor body 1, the second bending portion 33 at the tail end of the pin 3 is bent for the second time, the second bending portion 33 is perpendicular to the radial cross section of the wire, at this time, the radial cross section of the pin 3 is perpendicular to the bottom surface to be welded of the inductor body 1, and then the electrode surface 331 is formed by pressing the second bending portion 33 towards the side of the bottom surface to be welded, so that the electrode surface 331 and the bottom surface to be welded of the inductor body 1 are arranged in the same direction, and after the plating layer is formed on the bottom surface, the plating layer is directly welded and fixed on the circuit board.

As shown in fig. 1, the outer surface of the inductor body 1 in the present utility model is provided with two supporting tables 11 protruding downwards, the electrode surfaces 331 on the two second extending portions 32 are exposed at the bottom of the supporting tables 11, and the supporting tables 11 are provided to expose the electrode surfaces 331 at the bottom of the supporting tables 11, so that when forming a plating layer, only the bottoms of the two supporting tables 11 need to be plated, and the inductor body 1 can be fixed on a PCB board by welding through the plating layer at the bottom of the supporting tables 11, so that the two electrode surfaces 331 are prevented from being electrically connected to form a short circuit while the two electrode surfaces 331 are ensured to be completely covered.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the embodiments of the disclosure may be suitably combined to form other embodiments as will be understood by those skilled in the art.

Claims

1. An improved miniature inductor, characterized in that: including inductance body (1) and coil (2) sealed in inductance body (1), the inside central point of inductance body (1) is put in coil (2), coil (2) are equipped with two pins (3), pin (3) bend and set up and pin (3) side suppression form electrode face (331), electrode face (331) expose the setting on the coplanar of inductance body (1), be equipped with the electroplated coating on the plane that electrode face (331) corresponds.

2. An improved microinductor as claimed in claim 1, wherein: the inductor body (1) is integrally formed around the coil (2) in a pressing mode.

3. An improved microinductor as claimed in claim 2, wherein: the inductor body (1) is cuboid.

4. An improved microinductor as claimed in claim 2, wherein: the coil (2) is a double-layer coil (2).

5. An improved microinductor as claimed in claim 1, wherein: the pin (3) comprises a first bending part (31) connected with the integrated forming of the coil (2), an extension part (32) extending from the connecting part to the welding part and a second bending part (33) used for welding, wherein the first bending part (31), the extension part (32) and the second extension part (32) are integrated into one piece, and the length of the extension part (32) is larger than the height of the coil (2).

6. An improved microinductor as claimed in claim 5, wherein: the second bending part (33) is the terminal of pin (3), electrode surface (331) are formed into to second bending part (33) side press forming, inductance body (1) surface is protruding downwards to be equipped with two supporting bench (11), electrode surface (331) on two second extension parts (32) expose in supporting bench (11) bottom.

7. An improved microinductor as defined in claim 6, wherein: the bottom of the supporting table (11) is provided with an electroplated layer, and the electroplated layer is welded and fixed on the PCB.