CN216902479U

CN216902479U - Common mode inductor

Info

Publication number: CN216902479U
Application number: CN202123050082.5U
Authority: CN
Inventors: 国家栋; 孙睿; 黄增柯; 秦帅
Original assignee: Guangxi Power Grid Energy Technology Co ltd
Current assignee: Guangxi Power Grid Energy Technology Co ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-07-05
Anticipated expiration: 2031-12-07

Abstract

The utility model relates to the technical field of inductors, in particular to a common-mode inductor which comprises an installation bottom plate, wherein a fixed stop block is installed at the top end of the installation bottom plate, two groups of magnetic cores are sleeved on the surface of the fixed stop block, an insulating coil is wound on the surface of a plug pin, a protective shell is installed at the top end of the installation bottom plate, and heat dissipation holes are installed on the surface of the protective shell. According to the utility model, when the bottom end of the insert block is inserted into the rectangular groove on the surface of the mounting base plate, the chamfer structure at the bottom end of the insert block and the chamfer structure at one end of the bolt can be staggered and abutted to each other, so that when the insert block is pressed into the rectangular groove on the surface of the mounting base plate, the insert block can be automatically fixed by one end of the bolt, the protective shell is mounted and covered on the outer side of the magnetic core, the magnetic core and the insulating coil are not easily damaged by external force, dust is prevented from being adsorbed on the surface, and then the magnetic core is set into two semicircular structures, so that the magnetic core is convenient to operate when being wound, simple to use and high in efficiency.

Description

Common mode inductor

Technical Field

The utility model relates to the technical field of inductors, in particular to a common-mode inductor.

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 design of the board card, 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 using common mode inductor, because common mode inductor is the naked state, lead to common mode inductor outside not to have protection device, fall to decrease easily to the surface accumulates the dust easily, thereby causes the heat dissipation problem, secondly current common mode inductor's magnetic core wire winding is mainly through manual wire winding, because common mode inductor magnetic core is the circular ring form, leads to when the outside wire winding of magnetic core, manual operation is comparatively complicated, and wire winding efficiency is lower, consequently needs a urgent need to design a common mode inductor.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a common mode inductor, so as to solve the problems of the prior art that when the common mode inductor is used, a protection device is not provided outside the common mode inductor due to the exposed common mode inductor, the common mode inductor is easy to fall and damage, and dust is easily accumulated on the surface of the common mode inductor, thereby causing heat dissipation, and secondly, the magnetic core winding of the conventional common mode inductor mainly uses manual winding, and when the magnetic core of the common mode inductor is in a circular ring shape, the manual operation is complicated, and the winding efficiency is low.

In order to achieve the purpose, the utility model provides the following technical scheme: a common-mode inductor comprises a mounting bottom plate, wherein a fixed stop block is mounted at the top end of the mounting bottom plate, two groups of magnetic cores are sleeved on the surface of the fixed stop block, an insulating coil is wound on the surface of a bolt, a protective shell is mounted at the top end of the mounting bottom plate, heat dissipation holes are formed in the surface of the protective shell, a fixed block is mounted at the bottom end of the protective shell, and an insert block is mounted at the bottom end of the fixed block;

the magnetic core fixing device is characterized in that bolts are installed at two ends of the installation bottom plate, blocking pieces are installed on the surfaces of the bolts, elastic springs I are sleeved on the surfaces of the bolts, and a clamping fixing assembly is arranged on the outer side of the magnetic core.

Preferably, a rectangular clamping groove is formed in the surface of the inserting block, one end of the bolt is arranged in the rectangular clamping groove in the surface of the inserting block, and the rectangular clamping groove in the surface of the inserting block and the bolt form a clamping structure.

Preferably, one end of the insertion block inserted into the rectangular groove on the surface of the mounting base plate is provided with a chamfer structure, and one end of the plug inserted into the rectangular clamping groove on the surface of the insertion block is provided with a chamfer structure.

Preferably, the clamping and fixing assembly comprises a clamping block arranged on the surface of the mounting base plate, a sliding module is arranged at the bottom end of the clamping block, a mounting groove is formed in the surface of the mounting base plate, a fixing rod is arranged inside the mounting groove, an elastic spring II is arranged on the surface of the fixing rod, a circular groove hole is formed inside the sliding module, and the fixing rod is inserted into the circular groove hole inside the sliding module.

Preferably, the inner side of the clamping block and the surface of the fixed stop block are both provided with a gasket.

Preferably, the surface of the mounting base plate is provided with a circular slot, and one end of the insulating coil is inserted into the circular slot on the surface of the mounting base plate.

Compared with the prior art, the utility model has the beneficial effects that:

1. when inserting the inserted block bottom in the rectangle recess on mounting plate surface, because the chamfer structure of inserted block bottom and the chamfer structure of bolt one end can misplace each other and support out for when the inserted block is pressed into the rectangle recess on mounting plate surface, can fix the inserted block by bolt one end is automatic, thereby cover the protecting crust installation in the magnetic core outside, make magnetic core and insulating coil be difficult for receiving the damage of external force, prevent simultaneously that the dust from adsorbing on the surface.

2. Through setting up the magnetic core into two semicircular structure for convenient operation when the magnetic core carries out the wire winding, the first hand is simple, and efficiency is fast.

Drawings

FIG. 1 is a three-dimensional schematic of the structure of the present invention;

FIG. 2 is a schematic sectional elevation view of the structure of the present invention;

FIG. 3 is a schematic top view of a core and clamp block configuration of the present invention;

fig. 4 is an enlarged view of a portion of a structure shown in fig. 2 according to the present invention.

In the figure: 1. mounting a bottom plate; 101. fixing a stop block; 2. a magnetic core; 201. an insulated coil; 3. a protective shell; 301. heat dissipation holes; 302. a fixed block; 303. inserting a block; 4. a bolt; 401. a baffle plate; 402. a first elastic spring; 5. a clamping block; 501. a sliding module; 502. mounting grooves; 503. fixing the rod; 504. and a second elastic spring.

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.

Referring to fig. 1-4, an embodiment of the present invention is shown:

a common mode inductor comprises an installation bottom plate 1, wherein a fixed stop block 101 is installed at the top end of the installation bottom plate 1, two groups of magnetic cores 2 are sleeved on the surface of the fixed stop block 101, an insulating coil 201 is wound on the surface of a plug pin 4, a protective shell 3 is installed at the top end of the installation bottom plate 1, heat dissipation holes 301 are installed on the surface of the protective shell 3, a fixed block 302 is installed at the bottom end of the protective shell 3, and an insertion block 303 is installed at the bottom end of the fixed block 302;

bolt 4 is installed at 1 both ends of mounting plate, and 4 surface mounting of bolt have

separation blade

401, and 4 surface cup joints elasticity spring 402 on the bolt, and the 2 outsides of magnetic core are provided with the fixed subassembly of centre gripping.

Furthermore, a rectangular clamping groove is formed in the surface of the insert block 303, one end of the bolt 4 is arranged in the rectangular clamping groove in the surface of the insert block 303, the rectangular clamping groove in the surface of the insert block 303 and the bolt 4 form a buckling structure, and the insert block 303 can be fixed by inserting one end of the bolt 4 into the rectangular clamping groove in the surface of the insert block 303.

Further, the one end that inserted block 303 inserted the 1 surperficial rectangle recess of mounting plate is provided with the chamfer structure, and the one end that inserted pin 4 inserted and located the 303 surperficial rectangle draw-in groove of inserted block is provided with the chamfer structure, through the chamfer structure that inserted block 303 one end and 4 one ends of bolt all set up for can misplace after the collision of the 303 chamfer structures of inserted block and 4 chamfer structures of bolt offsets and pull open.

Further, the subassembly is fixed including installing in the clamp splice 5 on mounting plate 1 surface to the centre gripping, sliding module 501 is installed to clamp splice 5 bottom, mounting groove 502 has been seted up on mounting plate 1 surface, mounting groove 502 internally mounted has dead lever 503, dead lever 503 surface mounting has two elastic spring 504, sliding module 501 has inside seted up the circular slotted hole, dead lever 503 alternates in the inside circular slotted hole of sliding module 501, after producing elasticity through two elastic spring 504 and supporting sliding module 501, prevent that clamp splice 5 from appearing not hard up.

Furthermore, the inner side of the clamping block 5 and the surface of the fixed stop block 101 are provided with gaskets, so that the friction resistance can be increased through the gaskets, and the fixing effect is improved.

Furthermore, a circular groove hole is formed in the surface of the mounting base plate 1, one end of the insulating coil 201 is inserted into the circular groove hole in the surface of the mounting base plate 1, and the end connected with the insulating coil 201 penetrates through the bottom end of the mounting base plate 1, so that one end of the insulating coil 201 can be connected in a soldering mode conveniently.

The working principle is as follows: when the device is used by a worker, the outside of each group of magnetic cores 2 is quickly wound, then the insulating coil 201 is prevented from being clamped between the fixed stop 101 and the clamping block 5, after the elastic force generated by the elastic spring two 504 is abutted against the sliding module 501, the clamping block 5 clamps and fixes the magnetic core 2 to prevent shaking, secondly, the insertion block 303 is inserted into the rectangular groove on the surface of the mounting base plate 1, and then after one end of the chamfer structure of the insertion block 303 and one end of the chamfer structure of the plug pin 4 are staggered and propped open, the insertion block 303 is completely inserted into the rectangular groove on the surface of the mounting base plate 1, then, the blocking piece 401 on the surface of the bolt 4 is under the elastic action of the elastic spring I402, the bolt 4 is dragged to be automatically clamped into the rectangular clamping groove on the surface of the inserting block 303, the fixing and the action are completed, the protective shell 3 is completely covered outside the magnetic core 2 and the insulating coil 201, the protection is formed, and external force collision and dust adsorption are prevented.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A common mode inductor comprising a mounting base plate (1) and a plug (4), characterized in that: a fixed stop block (101) is installed at the top end of the installation bottom plate (1), two groups of magnetic cores (2) are sleeved on the surface of the fixed stop block (101), an insulating coil (201) is wound on the surface of the plug pin (4), a protective shell (3) is installed at the top end of the installation bottom plate (1), heat dissipation holes (301) are installed on the surface of the protective shell (3), a fixed block (302) is installed at the bottom end of the protective shell (3), and an insertion block (303) is installed at the bottom end of the fixed block (302);

bolt (4) are installed at mounting plate (1) both ends, bolt (4) surface mounting has separation blade (401), bolt (4) surface cup joints elastic spring one (402), magnetic core (2) outside is provided with the fixed subassembly of centre gripping.

2. A common-mode inductor according to claim 1, characterized in that: rectangular clamping grooves are formed in the surface of the inserting block (303), one end of the bolt (4) is arranged in the rectangular clamping groove in the surface of the inserting block (303), and the rectangular clamping groove in the surface of the inserting block (303) and the bolt (4) form a clamping structure.

3. A common-mode inductor according to claim 1, characterized in that: one end of the insertion block (303) inserted into the rectangular groove on the surface of the mounting base plate (1) is provided with a chamfer structure, and one end of the plug pin (4) inserted into the rectangular clamping groove on the surface of the insertion block (303) is provided with the chamfer structure.

4. A common-mode inductor according to claim 1, characterized in that: the fixed subassembly of centre gripping including install in clamp splice (5) on mounting plate (1) surface, slip module (501) are installed to clamp splice (5) bottom, mounting groove (502) have been seted up on mounting plate (1) surface, mounting groove (502) internally mounted has dead lever (503), dead lever (503) surface mounting has two (504) of elastic spring, the circular slotted hole has been seted up in slip module (501) inside, dead lever (503) alternate in the circular slotted hole of slip module (501) inside.

5. A common-mode inductor according to claim 4, characterized in that: gaskets are arranged on the inner side of the clamping block (5) and the surface of the fixed stop block (101).

6. A common-mode inductor according to claim 1, characterized in that: the surface of the mounting base plate (1) is provided with a circular groove hole, and one end of the insulating coil (201) is inserted into the circular groove hole in the surface of the mounting base plate (1).