CN216212763U

CN216212763U - Wide common mode inductance of application scope

Info

Publication number: CN216212763U
Application number: CN202122364054.4U
Authority: CN
Inventors: 汪民; 朱子强; 李嘉怡
Original assignee: Guangzhou Deloop Electronic Devices Co ltd
Current assignee: Guangzhou Deloop Electronic Devices Co ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-04-05
Anticipated expiration: 2031-09-28

Abstract

The utility model discloses a common-mode inductor with a wide application range, which comprises a framework, wherein an iron core is arranged at the center inside the framework, a copper wire is arranged on the outer wall of the iron core, the copper wire comprises a bottom inductance coil and a top inductance coil, an intermediate coating is arranged on the outer wall of the copper wire, an outer coating is arranged on the outer wall of the intermediate coating, metal sleeves are sleeved on the upper side and the lower side of the outer wall of the iron core inside the framework, a metal sheet is arranged on the outer wall of the top end of the framework, a plastic sleeve is sleeved on the outer wall of the framework, and connecting glue is arranged on the outer walls of the upper side and the lower side of the iron core inside the framework. According to the utility model, the metal sheet and the metal sleeve are arranged, and the matching effect of the metal sheet and the two metal sleeves can ensure that the device can ensure that an internal copper wire can not generate extra induced current to bring certain errors to electronic equipment in a strong electric field environment.

Description

Wide common mode inductance of application scope

Technical Field

The utility model relates to the application and technical field of common mode inductors, in particular to a common mode inductor with a wide application range.

Background

Common mode inductors, also called common mode chokes, are commonly used in switching power supplies of computers 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. When two coils are wound on the same iron core, the number of turns and the phase are the same (the winding directions are opposite). Thus, when normal current in the circuit flows through the common-mode inductor, the current generates reverse magnetic fields in the inductance coils wound in the same phase to offset each other, and at the moment, the normal signal current is mainly influenced by the resistance of the coils (and a small amount of damping caused by leakage inductance); when a common mode current flows through the coil, due to the isotropy of the common mode current, an equidirectional magnetic field is generated in the coil to increase the inductive reactance of the coil, so that the coil presents high impedance and generates a strong damping effect, thereby attenuating the common mode current and achieving the purpose of filtering.

A conventional patent (publication number CN 210245209U) discloses a common mode inductor, which includes a magnetic core and two coils wound on the magnetic core, wherein the magnetic core is a closed frame-shaped structure, the two coils are arranged in parallel at two sides of the magnetic core, and the winding directions of the two coils are opposite; each coil is formed by winding a lead with a flat section, and the periphery of the lead of each coil is provided with an insulating layer; each coil comprises a main body section and two connecting sections, wherein the main body section is wound into a spiral structure layer by layer along the thickness direction of the wire, the two connecting sections extend out of two ends of the main body section, the main body section is wound on the magnetic core, and each connecting section extends out towards the same side of the magnetic core; the tail end of each connecting section, which is far away from the main body section, is provided with an end electrode which is used for being connected with an external circuit and can support the common mode inductor. The device in the patent is not good for the protection of coil, on some special equipment, after the device takes place violent collision, cause the coil breakage easily even fracture to the device adopts two iron cores, and this kind of structure volume is relatively great.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a common mode inductor with a wide application range.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a wide common mode inductance of application scope, includes the skeleton, the inside center department of skeleton is provided with the iron core, the outer wall of iron core is provided with the copper line, the copper line includes bottom inductance coils and top inductance coils, the outer wall of copper line is provided with the intermediate coat, the outer wall of intermediate coat is provided with the external coating, the inside of skeleton and the upper and lower both sides that are located the iron core outer wall all overlap and are equipped with metal sleeve, the top outer wall department of skeleton is provided with the sheetmetal, the outer wall cover of skeleton is equipped with the plastics cover.

As a further description of the above technical solution:

the skeleton includes top dish, intermediate ring and base.

As a further description of the above technical solution:

and the outer walls of the upper side and the lower side of the framework are provided with connecting glue.

As a further description of the above technical solution:

the bottom of skeleton is provided with the stitch, the stitch includes top coil connection foot and bottom coil connection foot.

As a further description of the above technical solution:

both ends of the copper wire are fixedly connected with the top ends of the pins.

As a further description of the above technical solution:

the copper wire includes a bottom inductor and a top inductor.

As a further description of the above technical solution:

the bottom of skeleton just is located the outer wall department cover of stitch and is equipped with the fixed block.

As a further description of the above technical solution:

a sponge buffer ring is arranged between the inner wall of the metal sleeve and the outer wall of the copper wire.

The utility model has the following beneficial effects:

1. according to the utility model, the middle coating and the outer coating are arranged, and the high temperature resistance between two adjacent copper wires can be greatly improved through the cooperation of the middle coating and the outer coating, so that the device can still stably work in a strong current environment.

2. According to the utility model, the metal sheet and the metal sleeve are arranged, and the matching effect of the metal sheet and the two metal sleeves can ensure that the device can ensure that an internal copper wire can not generate extra induced current to bring certain errors to electronic equipment in a strong electric field environment.

3. According to the utility model, the sponge buffer ring is arranged, so that when the inductor collides, the phenomenon of breakage and fracture of a copper wire can be prevented easily through the action of the sponge buffer ring, and the practicability of the device is improved.

Drawings

Fig. 1 is a perspective view of a common mode inductor with a wide application range according to the present invention;

fig. 2 is a main sectional view of a common mode inductor with a wide application range according to the present invention;

fig. 3 is a bottom view of a common mode inductor with a wide application range according to the present invention;

fig. 4 is a cross-sectional view of a copper wire structure of a common mode inductor with a wide application range according to the present invention.

Illustration of the drawings:

1. a framework; 2. a stitch; 3. a metal sheet; 4. a plastic sheath; 5. a fixed block; 6. connecting glue; 7. a copper wire; 8. a sponge cushion ring; 9. a metal sleeve; 10. an iron core; 11. an intermediate coating; 12. an outer coating layer; 101. a top tray; 102. an intermediate ring; 103. a base; 201. a top coil connection leg; 202. a bottom coil connecting pin; 701. a bottom inductor coil; 702. a top inductor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, one embodiment of the present invention is provided: the utility model provides a wide common mode inductance of application scope, including skeleton 1, the inside center department of skeleton 1 is provided with iron core 10, iron core 10's outer wall is provided with copper line 7, copper line 7 includes bottom inductance coils 701 and top inductance coils 702, the outer wall of copper line 7 is provided with middle coating 11, middle coating 11's outer wall is provided with external coating 12, cooperation through middle coating 11 and external coating 12, thereby can improve high temperature resistance's ability between two adjacent copper lines 7 greatly, with this guarantee the device still can the steady operation under strong current environment.

The inside of skeleton 1 and the upper and lower both sides that are located the iron core 10 outer wall all overlap and are equipped with metal sleeve 9, and the top outer wall department of skeleton 1 is provided with sheetmetal 3, and the outer wall cover of skeleton 1 is equipped with plastic sheath 4, through sheetmetal 3 and two metal sleeve 9's mating reaction to can guarantee that the device can ensure that inside copper line 7 can not produce extra induced-current and bring certain error for electronic equipment under the environment of strong electric field.

Skeleton 1 includes top dish 101, intermediate ring 102 and base 103, the inside upper and lower both sides outer wall department that just is located iron core 10 of skeleton 1 all is provided with connection glue 6, the bottom of skeleton 1 is provided with stitch 2, stitch 2 includes top coil connection foot 201 and bottom coil connection foot 202, the both ends of copper line 7 all with the top fixed connection of stitch 2, copper line 7 includes bottom inductance coils 701 and top inductance coils 702, the bottom of skeleton 1 and the outer wall department cover that is located stitch 2 are equipped with fixed block 5, be provided with sponge buffer ring 8 between the inner wall of metal sleeve 9 and the copper line 7 outer wall, when this inductance is bumping, thereby can ensure copper line 7 can not appear damaged cracked phenomenon easily through the effect of sponge buffer ring 8, thereby improve the device's practicality.

The working principle is as follows: the iron core 10 is arranged in the framework 1, the bottom inductance coil 701 and the top inductance coil 702 with the same number of turns are wound on the iron core 10, and the two coils are connected to the bottom coil connecting pin 202 and the top coil connecting pin 201 in a distributed mode, so that the connection with the inner coil is achieved through the pins 2. And protect copper line 7 can not be damaged easily and the fracture through establish sponge buffer ring 8 on copper line 7 cover, sheathe metal sleeve 9 again on the outer wall of sponge buffer ring 8 and prevent that inside copper line 7 from producing extra induced-current. And the outer wall of the framework 1 is sleeved with the plastic sleeve 4, the practicability and the portability of the common mode inductor are ensured through the plastic sleeve 4, and meanwhile, the common mode inductor has certain waterproof performance.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a wide application scope's common mode inductance, includes skeleton (1), its characterized in that: an iron core (10) is arranged at the center of the interior of the framework (1), a copper wire (7) is arranged on the outer wall of the iron core (10), the copper wire (7) comprises a bottom inductance coil (701) and a top inductance coil (702), a middle coating (11) is arranged on the outer wall of the copper wire (7), and an outer coating (12) is arranged on the outer wall of the middle coating (11); the iron core is characterized in that metal sleeves (9) are sleeved on the inner portion of the framework (1) and the upper side and the lower side of the outer wall of the iron core (10), metal sheets (3) are arranged at the outer wall of the top end of the framework (1), and plastic sleeves (4) are sleeved on the outer wall of the framework (1).

2. The common mode inductor of claim 1, wherein the common mode inductor has a wide application range, and comprises: the framework (1) comprises a top plate (101), an intermediate ring (102) and a base (103).

3. The common mode inductor of claim 1, wherein the common mode inductor has a wide application range, and comprises: and the outer walls of the upper side and the lower side of the framework (1) which are positioned on the iron core (10) are provided with connecting glue (6).

4. The common mode inductor of claim 1, wherein the common mode inductor has a wide application range, and comprises: the bottom of skeleton (1) is provided with stitch (2), stitch (2) are including top coil connection foot (201) and bottom coil connection foot (202).

5. The common mode inductor with wide application range according to claim 4, wherein: the two ends of the copper wire (7) are fixedly connected with the top ends of the pins (2).

6. The common mode inductor with wide application range according to claim 4, wherein: the bottom of skeleton (1) just is located the outer wall department cover of stitch (2) and is equipped with fixed block (5).

7. The common mode inductor of claim 1, wherein the common mode inductor has a wide application range, and comprises: a sponge buffer ring (8) is arranged between the inner wall of the metal sleeve (9) and the outer wall of the copper wire (7).