CN215342255U

CN215342255U - Magnetic core boss SQ flat wire common mode inductor

Info

Publication number: CN215342255U
Application number: CN202120182023.4U
Authority: CN
Inventors: 吴红; 代志远; 朱钱华; 王莉; 全应军
Original assignee: Suzhou Yahong Electronic Technology Co ltd
Current assignee: Suzhou Yahong Electronic Technology Co ltd
Priority date: 2021-01-22
Filing date: 2021-01-22
Publication date: 2021-12-28
Anticipated expiration: 2031-01-22

Abstract

The utility model relates to a magnetic core boss SQ flat wire common mode inductor which is characterized by comprising the following components: the base, the magnetic core, the coil, the bumping post, the coil encircles at the both ends of magnetic core symmetrically, the magnetic core is fixed to be set up on the base, the base side is equipped with two bumping posts, the bumping post is used for fixed magnetic core, the base is equipped with the PIN, the PIN shaping is the bottom and directly goes out PIN, the both ends of coil are perpendicular horizontal plane down lead wire, and the lead wire twines tinned wire stitch bumping post and welded fastening downwards from the side, the magnet is square magnet and vertical setting, the coil is flat enameled coil, flat enameled coil lead-out wire is in the base bottom encircles. The common-mode inductor can be widely applied to switching power supplies of peripheral products of adapters, chargers, computers and game machines, common-mode electromagnetic interference signals are filtered, the common-mode inductor can play a role in EMI filtering, and electromagnetic wave radiation emission generated by high-speed signal wires is inhibited.

Description

Magnetic core boss SQ flat wire common mode inductor

Technical Field

The utility model relates to the technical field of inductors, in particular to a magnetic core boss SQ flat wire common mode inductor.

Background

Common mode inductor (Common mode Choke), also called Common mode Choke, is commonly used in a switching power supply of a computer to filter Common mode electromagnetic interference signals. In the board design, the common mode inductor also plays a role in EMI filtering, and is used for inhibiting electromagnetic waves generated by the high-speed signal line from radiating and emitting outwards.

Common mode inductance twines two sets of coils on the magnet usually, the part that every group coil was drawn forth is connected with live wire and zero line respectively, current common mode inductance generally all adopts ring shape magnet, and twine the enameled wire at magnet both ends, and general enameled wire is owing to be columniform, all need manual operation when the wire winding, lead to production efficiency low, even adopt automatic coil winding machine to coil, the coil of winding out all is the multilayer wire winding, and is large, there is the danger of turn-to-turn short circuit, short service life, distributed capacitance is high, it is relatively poor to restrain the interference signal effect, use frequency range shortcoming such as limited.

Thus, significant advances in the art are needed.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned drawbacks of the prior art, the present invention provides a common mode inductor for SQ flat wire on a magnetic core boss, comprising: the coil comprises a base, a 2-magnetic core, a 3-coil and a 4-bumping post, wherein the coil symmetrically surrounds the two ends of the magnetic core, the magnetic core is fixedly arranged on the base, the two bumping posts are arranged on the side face of the base and used for fixing the magnetic core, the base is provided with PINs, the PINs are formed into PINs with bottom straight PINs, the two ends of the coil are leads downward facing the vertical horizontal plane, the leads wind the tinned wire stitch bumping post downwards from the side face and are welded and fixed, the magnet is a square magnet and is vertically arranged, the coil is a flat enameled coil, and the outgoing line of the flat enameled coil is surrounded at the bottom of the base.

Preferably, the upper side and the lower side of the magnetic core are provided with protrusions.

Preferably, the distance between the coils arranged at the two ends of the magnet is 3-25 mm.

Preferably, the distance between the leads is 4-25 mm.

The magnetic core boss SQ flat wire common mode inductor has the following beneficial effects: the common-mode inductor can be widely applied to switching power supplies of peripheral products of adapters, chargers, computers and game machines, common-mode electromagnetic interference signals are filtered, the common-mode inductor can play a role in EMI filtering, and electromagnetic wave radiation emission generated by high-speed signal wires is inhibited.

Drawings

The utility model will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a front view of a common mode inductor of magnetic core boss SQ flat wire according to the present invention.

FIG. 2 is a side view of the structure of the magnetic core boss SQ flat wire common mode inductor of the present invention. FIG. 3 is a schematic top view of the structure of the magnetic core boss SQ flat wire common mode inductor of the present invention.

In the figure, 1-base, 2-magnetic core, 3-coil and 4-pin.

Detailed Description

FIG. 1 is a front view of a common mode inductor of magnetic core boss SQ flat wire according to the present invention. FIG. 2 is a side view of the structure of the magnetic core boss SQ flat wire common mode inductor of the present invention. FIG. 3 is a schematic top view of the structure of the magnetic core boss SQ flat wire common mode inductor of the present invention. Referring to fig. 1, fig. 2 and fig. 3, the common mode inductor for the core boss SQ flat wire according to the first embodiment of the present invention at least includes: the coil comprises a base, a 2-magnetic core, a 3-coil and a 4-bumping post, wherein the coil symmetrically surrounds the two ends of the magnetic core, the magnetic core is fixedly arranged on the base, the two bumping posts are arranged on the side face of the base and used for fixing the magnetic core, the base is provided with PINs, the PINs are formed into PINs with bottom straight PINs, the two ends of the coil are leads downward facing the vertical horizontal plane, the leads wind the tinned wire stitch bumping post downwards from the side face and are welded and fixed, the magnet is a square magnet and is vertically arranged, the coil is a flat enameled coil, and the outgoing line of the flat enameled coil is surrounded at the bottom of the base. The base PIN is formed into a PIN with a straight-out bottom, so that the defect that the PIN stressed by wire arrangement and hanging is short is overcome. The finished solder wire package can not splash solder balls. The base both sides are equipped with the bumping post as shelves limit, can fix the magnetic core, strengthen the compactedness of magnetic core and base.

When the magnetic core is specifically implemented, the upper side and the lower side of the magnetic core are provided with bulges. Through setting up the arch, change at equal volume and improve product inductance value about 30%, can be better reach the filtering effect.

In particular, the distance between the coils disposed at both ends of the magnet may be set to 3-25mm for better EMI filtering. The distance between the leads may be set to 4-25 mm.

Through the design of the above embodiment, the utility model has the beneficial effects that: the common-mode inductor can be widely applied to switching power supplies of peripheral products of adapters, chargers, computers and game machines, common-mode electromagnetic interference signals are filtered, the common-mode inductor can play a role in EMI filtering, and electromagnetic wave radiation emission generated by high-speed signal wires is inhibited.

While the utility model has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the utility model. In addition, many modifications may be made to adapt a particular situation to the teachings of the utility model without departing from its scope. Therefore, it is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a magnetic core boss SQ flat wire common mode inductance which characterized in that includes: the base, the magnetic core, the coil, the bumping post, the coil is around the both ends of magnetic core symmetrically, the magnetic core is fixed to be set up on the base, the base side is equipped with two bumping posts, the bumping post is used for fixed magnetic core, the base is equipped with the PIN, the PIN shaping is the bottom and directly goes out PIN, the both ends of coil are perpendicular horizontal plane down lead wire, and the lead wire twines tinned wire stitch bumping post and welded fastening downwards from the side, the coil is flat enameled coil, flat enameled coil lead-out wire is in the base bottom encircles.

2. The common mode inductor of magnetic core boss SQ flat wire as recited in claim 1, wherein said magnetic core is provided with protrusions on both upper and lower sides.

3. The common mode inductor of magnetic core boss SQ flat wire as claimed in claim 1, wherein the distance between the coils disposed at both ends of the magnet is 3-25 mm.

4. The core boss SQ pancake wire common mode inductor of claim 1, wherein the distance between said leads is 4-25 mm.