Common mode inductor with preset electrode

Abstract

The utility model discloses a common mode inductor with preset electrodes, which comprises a main body mechanism, the main body mechanism comprises a magnetic seat, coils and a bottom plate, the bottom plate is arranged on one side of the magnetic seat, the coils are symmetrically wound on one side of the magnetic seat, and four reserved holes are distributed on one side of the magnetic seat at equal intervals; the connecting mechanism comprises a preset electrode and a fixing block, the fixing block is fixedly connected to one side of the preset electrode, and the preset electrode is arranged on one side of the interior of the preformed hole; when the magnetic seat is used, the preformed hole is arranged to be matched with the preset electrode to be connected with the coil, the procedures of silver terminating, nickel plating, tin plating and the like of the magnetic seat are omitted through the preset electrode, the production efficiency is improved, the production cost is reduced, heavy metal pollution caused during silver terminating, nickel plating and tin plating treatment is prevented, the limiting block is matched with the connecting seat to limit the elastic plate, and the service life of the elastic plate is prolonged. And unstable installation caused by dislocation of the preset electrode when the preset electrode is fixed by mucilage glue is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of common mode inductors, in particular to a common mode inductor with preset electrodes. Background Art

[0002] Common-mode inductors, also called common-mode chokes, are often used in computer switching power supplies to filter common-mode electromagnetic interference signals. In board design, common-mode inductors also play the role of EMI filtering, which is used to suppress the electromagnetic waves generated by high-speed signal lines from radiating outward. Common-mode inductors are essentially a two-way filter: on the one hand, they must filter out common-mode electromagnetic interference on the signal line, and on the other hand, they must suppress themselves from emitting electromagnetic interference outward to avoid affecting the normal operation of other electronic equipment in the same electromagnetic environment. For an ideal inductor model, when the coil is wound, all magnetic flux is concentrated in the center of the coil. However, under normal circumstances, the toroidal coil will not be wound around a full circle, or the winding is not tight, which will cause magnetic flux leakage. Common-mode inductors have two windings with a considerable gap between them, which will cause magnetic flux leakage and form differential-mode inductance. Therefore, common-mode inductors generally also have a certain ability to attenuate differential-mode interference. In the design of filters, leakage inductance can also be used. For example, in ordinary filters, only one common-mode inductor is installed, and the leakage inductance of the common-mode inductor is used to generate an appropriate amount of differential-mode inductance, which plays a role in suppressing differential-mode current. In special circumstances, it is necessary to artificially increase the leakage inductance of the common-mode choke and increase the differential-mode inductance to achieve better filtering effects.

[0003] After the existing common-mode inductor completes the winding of the magnetic core, in order to ensure its normal use, the magnetic base needs to be silver-treated at the end, and after the silver-treatment, it also needs to be nickel-plated and tin-plated respectively, resulting in a large consumption of precious metal materials in the production process and high production costs. Therefore, a common-mode inductor with preset electrodes is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a common mode inductor with preset electrodes to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a common mode inductor with preset electrodes, comprising:

[0006] The main body mechanism includes a magnetic base, a coil and a bottom plate, wherein the bottom plate is arranged on one side of the magnetic base, the coil is symmetrically wound on one side of the magnetic base, and four reserved holes are evenly distributed on one side of the magnetic base;

[0007] A connecting mechanism, the connecting mechanism includes a preset electrode and a fixed block, the fixed block is fixedly connected to one side of the preset electrode, the preset electrode is arranged on one side of the interior of the reserved hole, the interior of the reserved hole is fixedly connected with a connecting seat, one side of the connecting seat is symmetrically fixedly connected with a limiting plate, one side of the preset electrode is symmetrically fixedly connected with a connecting plate, the interior of the connecting plate is symmetrically distributed with first through holes, the interior of the limiting plate is symmetrically distributed with second through holes, one side of the connecting seat is symmetrically fixedly connected with the limiting block, and one side of the fixed block is fixedly connected with an elastic plate.

[0008] By adopting the above technical solution, reserved holes are opened to cooperate with the preset electrodes for docking the coils, so that the present application does not need to go through the processes of silver termination, nickel plating and tin plating, thereby reducing production costs and preventing heavy metal pollution. At the same time, the elastic plate is limited by the limit block in cooperation with the connecting seat to prevent unstable installation due to misalignment of the preset electrode when the preset electrode is fixed with glue.

[0009] Preferably, a pad is fixedly connected to one side of the connecting seat.

[0010] By adopting the above technical solution, a pad is provided to reduce the wear of the contact surface between the preset electrode and the connecting seat.

[0011] Preferably, one side of the magnetic base is provided with equidistantly distributed insertion holes, an insertion rod is inserted into the insertion hole, and one end of the insertion rod is fixedly connected to the bottom plate.

[0012] By adopting the above technical solution, the insertion rod is arranged to match the insertion hole, which facilitates the connection between the bottom plate and the magnetic base.

[0013] Preferably, one side of the insertion rod is sleeved with a carbon fiber reinforced composite ring.

[0014] By adopting the above technical solution, a carbon fiber reinforced composite sleeve is provided to expand when heated, thereby enhancing the connection strength between the bottom plate and the magnetic base.

[0015] Preferably, a heat conducting sheet is installed on one side of the bottom plate.

[0016] By adopting the above technical solution, a heat conductive sheet is provided to conduct heat away from the coil, thereby preventing heat from accumulating in one place and being unable to dissipate heat naturally.

[0017] Preferably, a side plate is symmetrically and integrally formed on one side of the bottom plate.

[0018] By adopting the above technical solution, a side plate is provided to limit the magnetic base to prevent the magnetic base from being misplaced during installation.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. When the present application is used, a reserved hole is provided to match the preset electrode with the coil, and the pre-set electrode is used to reduce the processes of silvering, nickel plating and tinning of the magnetic base, thereby improving production efficiency, reducing production costs, and preventing heavy metal pollution caused by silvering, nickel plating and tinning. The limit block cooperates with the connecting seat to limit the elastic plate, so as to prevent the preset electrode from being misplaced when the preset electrode is fixed with glue, resulting in unstable installation;

[0021] 2. When the present application is in use, by setting the first through hole and the second through hole, the adhesive can penetrate into the reserved hole faster when bonding the preset electrode, thereby increasing the contact area between the adhesive and the inner wall of the reserved hole. At the same time, when the adhesive solidifies, the adhesive in the first through hole and the second through hole solidifies into a stick shape, thereby enhancing the connection strength between the preset electrode and the connecting seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view of the common mode inductor with preset electrodes of the utility model;

[0023] Figure 2 It is a schematic diagram of the exploded structure of the preset electrode in the common mode inductor with preset electrodes of the utility model;

[0024] Figure 3 This is a schematic structural diagram of a bottom plate in a common-mode inductor with preset electrodes of the utility model;

[0025] Figure 4 The utility model is a schematic diagram of the internal structure of the magnetic base in the common mode inductor with preset electrodes in a side view.

[0026] In the figure: 10, main body; 11, magnetic base; 12, coil; 13, bottom plate; 14, heat conductive plate; 15, side plate; 16, plug rod; 17, carbon fiber reinforced composite ring; 18, jack; 19, reserved hole; 20, connecting mechanism; 21, preset electrode; 22, connecting plate; 23, limit plate; 24, connecting seat; 25, fixing block; 26, elastic plate; 27, limit block; 28, first through hole; 29, second through hole; 31, pad. DETAILED DESCRIPTION

[0027] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0028] See also Figure 1-Figure 4 A common-mode inductor with preset electrodes is composed of a magnetic base 11 and a connecting mechanism 20.

[0029] See also Figure 1 , Figure 3 and Figure 4 One side of the magnetic base 11 is provided with four equidistantly distributed sockets 18, an insert rod 16 is inserted inside the socket 18, one end of the insert rod 16 is fixedly connected to the base plate 13, in order to enhance the connection strength between the base plate 13 and the magnetic base 11, one side of the insert rod 16 is provided with a carbon fiber reinforced composite collar 17, in order to prevent the magnetic base 11 from being installed misaligned, a side plate 15 is symmetrically integrally formed on one side of the base plate 13, and a coil 12 is symmetrically wound on one side of the magnetic base 11. In order to conduct heat from the coil 12 and prevent heat from accumulating in one place and being unable to dissipate heat naturally, a heat conductive sheet 14 is installed on one side of the base plate 13.

[0030] See also Figure 1 , Figure 2 and Figure 4 The connecting mechanism 20 includes a preset electrode 21, a fixed block 25 and a connecting seat 24, the fixed block 25 is fixedly connected to one side of the preset electrode 21, the preset electrode 21 is arranged on one side of the inner part of the reserved hole 19, and the connecting seat 24 is fixedly connected to one side of the inner part of the reserved hole 19. In order to reduce the wear of the contact surface between the preset electrode 21 and the connecting seat 24, a pad 31 is fixedly connected to one side of the connecting seat 24, a limiting plate 23 is symmetrically fixedly connected to one side of the connecting seat 24, a connecting plate 22 is symmetrically fixedly connected to one side of the preset electrode 21, a first through hole 28 is equidistantly provided inside the connecting plate 22, a second through hole 29 is equidistantly provided inside the limiting plate 23, a limiting block 27 is symmetrically fixedly connected to one side of the connecting seat 24, and an elastic plate 26 is fixedly connected to one side of the fixed block 25.

[0031] Working principle: During the processing, the basic components are produced first, the preset electrode 21 is made, the structural glue is applied into the reserved hole 19, the preset electrode 21 is attached to the reserved hole 19, and the preset electrode 21 is pressed to make the elastic plate 26 deform and move to one side of the limit block 27. At the same time, the connecting plate 22 is in contact with the limit plate 23, and adhesive is added to fix the preset electrode 21. The bottom plate 13 is installed on one side of the magnetic base 11, and the plug 16 is inserted into the socket 18. The whole is pressed together, and then it is shaped and baked after pressing to complete the processing of the common mode inductor.

[0032] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A common mode inductor with preset electrodes, characterized in that: include: A main body mechanism (10), the main body mechanism (10) comprising a magnetic base (11), a coil (12) and a bottom plate (13), the bottom plate (13) being arranged on one side of the magnetic base (11), the coil (12) being symmetrically wound on one side of the magnetic base (11), and four reserved holes (19) being equidistantly arranged on one side of the magnetic base (11); A connection mechanism (20), the connection mechanism (20) comprising a preset electrode (21) and a fixed block (25), the fixed block (25) being fixedly connected to one side of the preset electrode (21), the preset electrode (21) being arranged on one side of the interior of a reserved hole (19), the interior of the reserved hole (19) being fixedly connected to a connection seat (24), one side of the connection seat (24) being symmetrically fixedly connected to a limiting plate (23), one side of the preset electrode (21) being symmetrically fixedly connected to a connection plate (22), the interior of the connection plate (22) being provided with first through holes (28) distributed at equal intervals, the interior of the limiting plate (23) being provided with second through holes (29) distributed at equal intervals, one side of the connection seat (24) being symmetrically fixedly connected to a limiting block (27), and one side of the fixed block (25) being fixedly connected to an elastic plate (26).

2. The common mode inductor with preset electrodes according to claim 1, characterized in that: A backing plate (31) is fixedly connected to one side of the connecting seat (24).

3. The common mode inductor with preset electrodes according to claim 1, characterized in that: One side of the magnetic base (11) is provided with insertion holes (18) at equal intervals, an insertion rod (16) is inserted into the insertion hole (18), and one end of the insertion rod (16) is fixedly connected to the bottom plate (13).

4. The common mode inductor with preset electrodes according to claim 3, characterized in that: A carbon fiber reinforced composite sleeve (17) is sleeved on one side of the insertion rod (16).

5. The common mode inductor with preset electrodes according to claim 1, characterized in that: A heat conducting sheet (14) is installed on one side of the bottom plate (13).

6. The common mode inductor with preset electrodes according to claim 1, characterized in that: A side plate (15) is symmetrically integrally formed on one side of the bottom plate (13).

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