CN212570593U

CN212570593U - Common mode filter inductor

Info

Publication number: CN212570593U
Application number: CN202021644066.1U
Authority: CN
Inventors: 陈壮波; 陈文卿
Original assignee: Dongguan Chaorong Electronic Products Co ltd
Current assignee: Dongguan Chaorong Electronic Products Co ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-02-19
Anticipated expiration: 2030-08-10

Abstract

The utility model belongs to the technical field of the inductance, concretely relates to common mode filter inductance. The utility model provides a common mode filter inductance, includes magnetic core, two coils, position sleeve, base, pin and protective sheath, the bottom of magnetic core with the top fixed connection of base, two the coil symmetry is around locating on the magnetic core, the position sleeve cover is established two the coil outside, the pin is fixed to be set up in the base bottom, be equipped with the trough all around of base. The utility model discloses wrap up the coil surface fixedly, can avoid influencing common mode filter inductance's result of use because of long-time use or the position between the collision back coil changes, and sets up four trough in the base both sides, the location at the coil both ends of being convenient for, convenient to use, easy operation, greatly increased work efficiency.

Description

Common mode filter inductor

Technical Field

The utility model belongs to the technical field of the inductance, concretely relates to common mode filter inductance.

Background

Common mode inductor, also called common mode choke, is commonly used in computer switching power supplies to filter common mode electromagnetic interference signals, and is essentially a bidirectional filter: on one hand, common mode electromagnetic interference on a signal line is filtered, on the other hand, electromagnetic interference which is not emitted outwards is restrained, and normal work of other electronic equipment under the same electromagnetic environment is prevented from being influenced. But among traditional common mode filter inductance, the coil twines does not have fixing device behind the magnetic core surface, and the position of using for a long time or colliding between the back coil can change to produce great clearance, produce the magnetic flux and leak, influence common mode filter inductance's result of use, and common mode filter inductance structure is complicated, and the assembly is troublesome, is not suitable for the development trend of the meticulous high efficiency of components and parts now.

SUMMERY OF THE UTILITY MODEL

In order to overcome the shortcoming and the deficiency that exist among the prior art, the utility model aims to provide a common mode filter inductance has solved the easy problem that changes and inductance structure is complicated of coil position among the current common mode filter inductance.

The purpose of the utility model is realized through the following technical scheme: the utility model provides a common mode filter inductance, includes magnetic core, two coils, position sleeve, base, pin and protective sheath, the bottom of magnetic core with the top fixed connection of base, two the coil symmetry is around locating on the magnetic core, the position sleeve cover is established two the coil outside, the pin is fixed to be set up in the base bottom, be equipped with the trough all around of base.

As an optimized technical scheme of the utility model, the surface of position sleeve is equipped with the aperture.

As an optimized technical scheme of the utility model, the position sleeve is the high heat conduction silica gel film.

As the utility model discloses an optimized technical scheme, the quantity of trough is four, wherein two the trough sets up in one side of base, and two other troughs set up in relative one side, the trough surface is established to the frosting.

As an optimized technical proposal of the utility model, the outer surface of the base is provided with a Teflon coating.

As an optimal technical scheme of the utility model, the outside of pin all is provided with the protective sheath, and the protective sheath is ethylene propylene rubber.

As an optimized technical scheme of the utility model, the magnetic core is annular sendust magnetic core.

The beneficial effects of the utility model reside in that: the utility model discloses wrap up the coil surface fixedly, can avoid influencing common mode filter inductance's result of use because of long-time use or the position between the collision back coil changes, and sets up four trough in the base both sides, the location at the coil both ends of being convenient for, convenient to use, easy operation, greatly increased work efficiency.

Drawings

Fig. 1 is a top view of the common mode filter inductor of the present invention;

fig. 2 is a front view of the common mode filter inductor of the present invention.

Reference numerals:

1-a magnetic core; 2-a coil; 3-positioning sleeve;

4-a base; 5-a wiring groove; 6-pin;

7-protective sleeve.

Detailed Description

In order to facilitate the understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.

Referring to fig. 1-2, a common mode filter inductor includes a magnetic core 1, two coils 2, a positioning sleeve 3, a base 4, pins 6 and a protective sleeve 7, wherein the bottom of the magnetic core 1 is fixedly connected to the top of the base 4, the two coils 2 are symmetrically wound on the magnetic core 1, the positioning sleeve 3 is sleeved on the outer sides of the two coils 2, the pins 6 are fixedly arranged at the bottom end of the base 4, and wiring slots 5 are formed around the base 4.

In actual use, the coil 2 wound on the magnetic core 1 is fixed by the positioning sleeve 3, so that the influence on the use effect of the common mode filter inductor caused by long-time use or position change between the coils 2 after collision can be avoided.

Furthermore, the surface of the positioning sleeve 3 is provided with a small hole.

The utility model discloses be equipped with the aperture on position sleeve 3, make the inductance heat dissipation is better.

Furthermore, the positioning sleeve 3 is a high thermal conductive silicone film.

The utility model discloses a regard high heat conduction silica gel film as position sleeve 3, can also play heat dissipation, insulating, absorbing effect when fixing coil 2.

Furthermore, the number of the wiring grooves 5 is four, two of the wiring grooves 5 are arranged on one side of the base 4, the other two wiring grooves 5 are arranged on the opposite side, and the surfaces of the wiring grooves 5 are frosted.

The utility model discloses a set up two trough 5 in the both sides of base 4, make the both ends of coil 2 more firm at the kneck, difficult not hard up, and establish the trough 5 surface into frosting, increase the frictional force at

trough

5 and 2 both ends of coil, better fixed coil 2 position in trough 5, convenient operation.

Further, the outer surface of the base 4 is provided with a teflon coating.

The utility model discloses a 4 surfaces of base set up the special fluorine dragon coating, have good high temperature resistance and wearability, and the inductance heat production under the reducible long-time work and exert an influence to the result of use.

Further, the outer sides of the pins 6 are provided with protective sleeves 7, and the protective sleeves 7 are made of ethylene propylene rubber.

The utility model discloses a all be provided with the EP rubbers protective sheath in the outside of pin 6, can prevent that the inductance from damaging because of the collision or drop among the practical process, can protect common mode filter inductance, improve life.

Further, the magnetic core 1 is an annular sendust magnetic core.

The utility model discloses a regard annular sendust magnetic core as magnetic core 1, sendust magnetic core job stabilization, it is little along with the temperature change changes, and the energy storage is high, and is small, the miniaturized trend of components and parts of being convenient for.

The above-mentioned embodiment is the utility model discloses the implementation of preferred, in addition, the utility model discloses can also realize by other modes, not deviating from the utility model discloses any obvious replacement is all within the protection scope under the prerequisite of design.

Claims

1. The utility model provides a common mode filter inductance, its characterized in that, includes magnetic core, two coils, position sleeve, base, pin and protective sheath, the bottom of magnetic core with the top fixed connection of base, two the coil symmetry is around locating on the magnetic core, the position sleeve cover is established two the coil outside, the pin is fixed to be set up in the base bottom, be equipped with the trough all around of base.

2. A common-mode filter inductor according to claim 1, wherein: the surface of the positioning sleeve is provided with a small hole.

3. A common-mode filter inductor according to claim 2, wherein: the locating sleeve is a high-thermal-conductivity silica gel film.

4. A common-mode filter inductor according to claim 3, wherein: the number of the wiring grooves is four, two of the wiring grooves are arranged on one side of the base, the other two wiring grooves are arranged on the opposite side, and the surface of each wiring groove is a frosted surface.

5. A common-mode filter inductor according to claim 4, wherein: the outer surface of the base is provided with a Teflon coating.

6. A common-mode filter inductor according to claim 5, wherein: the outside of pin all is provided with the protective sheath, and the protective sheath is ethylene propylene rubber.

7. A common-mode filter inductor according to claim 6, wherein: the magnetic core is an annular iron-silicon-aluminum magnetic core.