CN218525380U

CN218525380U - High common mode inductance of security

Info

Publication number: CN218525380U
Application number: CN202122423585.6U
Authority: CN
Inventors: 周华丰
Original assignee: Hefei Delong Electronic Technology Co ltd
Current assignee: Hefei Delong Electronic Technology Co ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2023-02-24
Anticipated expiration: 2031-10-09

Abstract

The utility model discloses a high common mode inductance of security, including magnetic core, apron, the equal fixedly connected with connecting plate in both sides around the magnetic core, two all be provided with two fixing device on the up end of connecting plate, be located the lower extreme of magnetic core is provided with the bottom plate, both ends difference fixed connection leans on lower extreme department, two at both sides connecting plate lateral wall around the bottom plate connecting plate up end center department has seted up square groove, two first screw has been seted up to the center department in square groove, the outside winding of magnetic core has two copper lines, equal fixedly connected with fixed plate, two on the wall of both sides around the apron around the up end center department of fixed plate has all seted up the connecting hole. The utility model discloses with having set up fixing device between copper line and the spliced pole, inside through the fixing device with copper line fixed connection in both sides, also improved the security when using when having strengthened the installation effectiveness.

Description

High common mode inductor of security

Technical Field

The utility model relates to an electron spare part field especially relates to a high common mode inductance of security.

Background

Common mode inductor (Common mode Choke), also called Common mode Choke, is commonly used in switching power supplies of computers for filtering Common mode electromagnetic interference signals, in board design, the Common mode inductor also plays a role of EMI filtering for suppressing electromagnetic waves generated by high speed signal lines from radiating and emitting outwards, the Common mode inductor is a Common mode interference suppression device taking ferrite as a magnetic core, and is formed by symmetrically winding two coils with the same size and the same number of turns on the same ferrite toroidal core to form a four-terminal device, so that the Common mode signal shows a large inductance suppression effect, and the differential mode signal shows a small leakage inductance which hardly acts. Therefore, the common-mode inductor can effectively restrain common-mode interference signals in a balanced line, and differential-mode signals normally transmitted by the line are not affected.

A conventional patent (publication number CN 207217248U) discloses a common mode inductor, which includes an annular magnetic core, and a skeleton wrapping the annular magnetic core, wherein the skeleton includes two winding regions and two isolation regions, the two winding regions are respectively wound with a first coil and a second coil, the isolation regions are spaced from the winding regions, the two isolation regions are opposite, the two winding regions are opposite, the two isolation regions are connected in a bridging manner by a partition plate, the skeleton further includes an inner ring, and the inner ring is provided with a recess for embedding and fixing the annular magnetic core; an outer ring surrounding an inner ring; the inner circular ring is connected with the outer circular ring through the support plates. The utility model discloses a its pin is the plug-in type structure, and the wire winding is troublesome and only can adopt the manual work to peg graft, leads to production efficiency low, and the security is lower, and operating time has long the stable performance nature decline that causes whole equipment easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the high common mode inductor of a security that proposes.

In order to realize the purpose, the utility model adopts the following technical scheme: the utility model provides a high common mode inductance of security, includes magnetic core, apron, the equal fixedly connected with connecting plate in both sides, two all be provided with two fixing device on the up end of connecting plate, be located the lower extreme of magnetic core is provided with the bottom plate, both ends difference fixed connection is leaned on lower extreme department, two at both sides connecting plate lateral wall around the bottom plate connecting plate up end center department has seted up square groove, two the center department in square groove has seted up first screw, the outside winding of magnetic core has two copper lines, equal fixedly connected with fixed plate, two on the wall of both sides around the apron the up end center department of fixed plate has all seted up the connecting hole.

As a further description of the above technical solution:

and the winding directions of the two copper wires are opposite.

As a further description of the above technical solution:

the fixing device comprises a fixing block, a fixing hole is formed in one side wall of the fixing block, a wire support is fixedly connected to the center of the lower inner wall of the fixing hole, a second screw hole is formed in the upper end face of the fixing block, a screw is arranged inside the second screw hole, a lower pressing block is fixedly connected to the lower end of the screw, and the position of the lower pressing block corresponds to the position of the wire support.

As a further description of the above technical solution:

the lower end of the bottom plate is provided with four connecting columns, and the four connecting columns are fixedly connected to the lower wall of the bottom plate in a rectangular array mode.

As a further description of the above technical solution:

the lower ends of the four wire supports penetrate through the fixing block and the connecting plate respectively, and the end parts of the four wire supports are fixedly connected with the four connecting columns.

As a further description of the above technical solution:

the two connecting holes correspond to the two first screw holes in position.

As a further description of the above technical solution:

and the fixing plates at the two ends of the cover plate are fixedly connected with the two connecting plates through bolts.

As a further description of the above technical solution:

the material of apron is the metal, and the surface scribbles polyurethane three proofings lacquer.

The utility model discloses following beneficial effect has:

the utility model discloses with the current contrast that sets up, apron on the equipment adopts the metal material to make, can guarantee that the inner coil is not influenced in special operational environment is inside, scribbles the polyurethane three proofings lacquer on the surface of apron simultaneously, has strengthened its anti-electromagnetism ability.

The utility model discloses with the current contrast that sets up, set up fixing device between coil and the spliced pole, compare the plug-in type structure, also improved the security when having improved the installation effectiveness, avoided using coil junction to produce not hard up for a long time.

Drawings

Fig. 1 is an isometric view of a common mode inductor with high safety according to the present invention;

fig. 2 is a left side view of the common mode inductor with high safety according to the present invention;

FIG. 3 is an enlarged schematic view of FIG. 1 at A;

fig. 4 is a cross-sectional view of the utility model provides a high common mode inductor's of security fixed block.

Illustration of the drawings:

1. a cover plate; 2. connecting holes; 3. a fixing plate; 4. a fixed block; 5. a connecting plate; 6. a copper wire; 7. a base plate; 8. a magnetic core; 9. a first screw hole; 10. connecting columns; 11. a square groove; 12. a screw; 13. a fixing hole; 14. pressing the block; 15. a wire support; 16. and a second screw hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to 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 simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific 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 meaning 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, the present invention provides an embodiment: a high-safety common mode inductor comprises a magnetic core 8, a cover plate 1, connecting plates 5 are fixedly connected to the front side and the rear side of the magnetic core 8, two fixing devices are arranged on the upper end faces of the two connecting plates 5, a bottom plate 7 is arranged at the lower end of the magnetic core 8, the two connecting plates 5 are used for fixing the magnetic core 8 and the bottom plate 7, four connecting columns 10 are arranged at the lower end of the bottom plate 7, the four connecting columns 10 are fixedly connected to the lower wall of the bottom plate 7 in a rectangular array mode, the connecting columns 10 are made of copper and are soft, the device body can be conveniently welded in the later stage, the front end and the rear end of the bottom plate 7 are respectively and fixedly connected to the side walls of the connecting plates 5 at the two sides, square grooves 11 are formed in the centers of the upper end faces of the two connecting plates 5, first screw holes 9 are formed in the centers of the two square grooves 11, two copper wires 6 are wound on the outer sides of the magnetic core 8, the two copper wires 6 are opposite in winding directions, fixing plates 3 are fixedly connected to the front side wall and the rear side wall of the cover plate 1, connecting plates 3, connecting holes 2 are formed in the centers of the upper ends of the two fixing plates 3, the two fixing plates 11 are exactly corresponding to the positions of the two first screw holes 9;

fixing device includes fixed block 4, fixed orifices 13 have been seted up on a lateral wall of fixed block 4, the lower inner wall center fixedly connected with that is located fixed orifices 13 holds in the palm 15 with the line, second screw 16 has been seted up on the up end of fixed block 4, the inside of second screw 16 is provided with screw 12, lower extreme fixedly connected with of screw 12 is briquetting 14 down, the position of briquetting 14 corresponds with the position that the line held in the palm 15 down, the both ends of two copper lines 6 are fixed connection respectively in the fixed orifices 13 on the fixed block 4 lateral wall of both sides, through putting copper line 6 on the line holds in the palm 15, screw 12 in the twisting upper end, it is fixed with copper line 6 with line support 15 to hold in the palm 14 down through the lower briquetting of screw 12 lower extreme, the lower extreme that four lines held in the palm 15 runs through fixed block 4 and connecting plate 5 respectively, and tip and four spliced pole 10 fixed connection, the material of apron 1 is the metal, and the surface scribbles the polyurethane three proofings, metal cover 1 can be fine plays an anti-electromagnetic effect.

The working principle is as follows: the utility model relates to a high common mode inductance of security, through having two copper lines 6 opposite direction winding on the surface of magnetic core 8, insert the fixed orifices 13 on 4 lateral walls of fixed block of 5 upper ends of both sides connecting plate respectively at the both ends with two copper lines 6, put copper line 6 on the line support 15 on the inner wall under the fixed orifices 13, through twisting the screw 12 of moving 16 inside of second screw, fix copper line 6 in the centre of briquetting 14 and line support 15 down, on passing through square groove 11 of bolt fixed connection in 5 upper ends of both sides connecting plate with apron 1, the surface of metal decking 1 scribbles the polyurethane three proofings lacquer, play an anti electromagnetic effect that can be fine.

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 and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a high common mode inductance of security, includes magnetic core (8), apron (1), its characterized in that: equal fixedly connected with connecting plate (5) in both sides around magnetic core (8), two all be provided with two fixing device on the up end of connecting plate (5), be located the lower extreme of magnetic core (8) is provided with bottom plate (7), both ends difference fixed connection leans on lower extreme department at both sides connecting plate (5) lateral wall around bottom plate (7), two square groove (11), two have been seted up in connecting plate (5) up end center department first screw (9) have been seted up in the center department of square groove (11), the outside winding of magnetic core (8) has two copper lines (6), equal fixedly connected with fixed plate (3), two on the wall of both sides around apron (1) connecting hole (2) have all been seted up in the up end center department of fixed plate (3).

2. A high-safety common mode inductor according to claim 1, characterized in that: the winding directions of the two copper wires (6) are opposite.

3. A high-safety common mode inductor according to claim 1, characterized in that: fixing device includes fixed block (4), fixed orifices (13) have been seted up on the lateral wall of fixed block (4), are located the wired support of lower inner wall center department fixed connection (15) of fixed orifices (13), second screw (16) have been seted up on the up end of fixed block (4), the inside of second screw (16) is provided with screw (12), briquetting (14) under the lower extreme fixedly connected with of screw (12), the position of briquetting (14) corresponds with the position that the line held in the palm (15) down.

4. A high-safety common mode inductor according to claim 1, characterized in that: the lower end of the bottom plate (7) is provided with four connecting columns (10), and the four connecting columns (10) are fixedly connected to the lower wall of the bottom plate (7) in a rectangular array mode.

5. A high common mode inductance of security according to claim 3 characterized in that: the lower ends of the four wire supports (15) penetrate through the fixing block (4) and the connecting plate (5) respectively, and the end parts of the four wire supports are fixedly connected with the four connecting columns (10).

6. A high common mode inductance of security according to claim 1 characterized in that: the two connecting holes (2) correspond to the two first screw holes (9).

7. A high-safety common mode inductor according to claim 1, characterized in that: the fixing plates (3) at the two ends of the cover plate (1) are fixedly connected with the two connecting plates (5) through bolts.

8. A high common mode inductance of security according to claim 1 characterized in that: the cover plate (1) is made of metal, and the surface of the cover plate is coated with polyurethane three-proofing paint.