CN201222403Y

CN201222403Y - Soft magnetic ferrite magnet core

Info

Publication number: CN201222403Y
Application number: CNU2008200496685U
Authority: CN
Inventors: 谭福清; 李健; 陈艺宣
Original assignee: JIANGMEN ANCI ELECTRONIC CO Ltd
Current assignee: JIANGMEN ANCI ELECTRONIC CO Ltd
Priority date: 2008-06-24
Filing date: 2008-06-24
Publication date: 2009-04-15
Anticipated expiration: 2018-06-24

Abstract

The utility model relates to a soft magnet oxysome magnetic core, which comprises a bottom board, a side leg and a central cylinder, wherein the central cylinder is arranged on the central portion of the bottom board, the side leg is arranged on the periphery of the bottom board, a ring-shaped winding window which can hold coils is arranged between the bottom board and the side leg, the outer surface of the side leg is surrounded by a plurality of panels, the external structure of a magnetic core is in a polygon shape, and at least a leading-out groove is arranged on the side leg. The utility model has the advantages of reasonable structure, optimized efficiency, excellent electromagnetic compatibility and little electromagnetic interference to the external world, which can resist electromagnetic interference of the external world.

Description

A kind of soft-magnetic ferrite core

Technical field

The utility model relates to a kind of soft-magnetic ferrite core that is used for making various inductance elements.

Background technology

Soft-magnetic ferrite core is mainly used to make various inductance elements, as transformer magnetic core, inductor core and filter magnetic core etc., and the miniaturization of inductance element, requirement appropriate design by shape under the situation that does not reduce its efficient makes the volume of magnetic core littler.Traditional soft-magnetic ferrite core mainly is an E type structure, as shown in Figure 1, this is simple in structure, but along with development of electronic technology, the magnetic core of above-mentioned E type structure can't be applicable in the strict electronic circuit of electromagnetic environment that as notebook computer etc., main cause is that this E type magnetic core is the open type shell, the leakage field and the leakage inductance that produce when work are big, and other electronic component on the circuit board is produced bigger interference.

Summary of the invention

In order to overcome the deficiencies in the prior art, the utility model provides a kind of rational in infrastructure, efficiency optimization, Electro Magnetic Compatibility good, and electromagnetic interference to external world is very little, soft-magnetic ferrite core that again can anti-outside electromagnetic interference.

The technical scheme that the utility model adopted is:

A kind of soft-magnetic ferrite core, it comprises base plate, limit leg and center pillar, center pillar is located at the middle part of base plate, the limit leg is located at the periphery of base plate, it between base plate and the limit leg ring winding window that can hold coil, the outer surface of limit leg is surrounded by a plurality of planes, and the magnetic core external structure is polygon, and the limit leg is provided with at least one and goes out wire casing.

Further optimal way, the external structure of described magnetic core is square, and the coiling window is annular, and center pillar is cylindrical.

The beneficial effects of the utility model are: the body that the design is used for installing coil is an annular coiling window, outside limit leg is surrounded the ring winding window, only keeping wire casing leads to extraneous, this design makes that the Electro Magnetic Compatibility of product is good, it is very little to produce electromagnetic interference to external world, has improved the antijamming capability of itself again; The periphery design of limit leg is become polygon, have under the prerequisite of enough magnetic conductive areas at the limit leg that guarantees magnetic core, the coiling window of magnetic core can do more, and efficient is higher; Further, with the periphery design squarely of limit leg, the coiling window is annular, and center pillar is cylindrical, makes more reasonable structure, can more effectively utilize the space of circuit board, improves duty ratio, thereby makes circuit board compacter.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the structural representation of traditional magnetic core;

Fig. 2 is a structural representation of the present utility model;

STRUCTURE DECOMPOSITION figure when Fig. 3 is the utility model manufacturing transformer;

Fig. 4 is second kind of embodiment of the present utility model;

Fig. 5 is the third embodiment of the present utility model.

Embodiment

With reference to Fig. 2, a kind of soft-magnetic ferrite core, it comprises base plate 1, limit leg 2 and center pillar 3, center pillar 3 is located at the middle part of base plate 1, limit leg 2 is located at the periphery of base plate 1, is the ring winding window 4 that can hold coil between base plate 1 and the limit leg 2, and the outer surface of limit leg 2 is surrounded by a plurality of planes 21, the external structure of this magnetic core is polygon, and limit leg 2 is provided with at least one and goes out wire casing 21.

With reference to shown in Figure 3, when practical application, the coil 6 of in the magnetic core 5 of bottom, packing into, refill upper top magnetic core 7, form a transformer integral body, the magnetic conductive loop of this transformer is the center pillar from the top magnetic core 7---center pillar of the bottom magnetic core 5---base plate of bottom magnetic core 5---the limit leg of bottom magnetic core 5---the limit leg of top magnetic core 7---base plate of the top magnetic core 7---center pillar of top magnetic core 7, because coil 6 is packed in the ring winding window, the limit leg of magnetic core encases coil 6 up and down, play the shielding protection effect, in the course of the work, neither can produce and produce electromagnetic interference to external world, improve the antijamming capability of itself simultaneously again; In addition, the utility model has under the prerequisite of enough magnetic conductive areas at the limit leg that guarantees magnetic core, the periphery design of limit leg is become polygon, more reasonable structure when this polygon magnetic core is installed on the circuit board, make that the designer is easier to arrange more electronic component on less circuit board, thereby make circuit board compacter; Further concrete optimal way is designed to the external structure of this magnetic core to be square, the coiling window ringwise, center pillar is cylindrical, this project organization is reasonable, makes that the copper cash that coil consumed suitable with it is minimum, most effective; Similarly, external structure also can be designed to hexagon, and the shape of center pillar is except cylindrical, also can be elliptical cylinder-shape or runway shape (be the two terminal circle arc with both sides straight flange combine).

The design has a plurality of at the output voltage of transformer, therefore, but go out also corresponding setting many places of wire casing 21, as two, four etc.

In order to strengthen the terminals intensity at transformer input 61 places, the plastic skeleton of the terminals of transformer needs thickening, the design is not in order to increase the overall volume of transformer, be provided with groove 11 going out the corresponding base plate of wire casing place with wherein one or more of limit leg, the input of transformer is loaded on this and goes out in the wire casing.

The utility model also is provided with draw-in groove 12 at the back side of base plate 1 for easy for installation.

The utility model except can make Fig. 2, Fig. 3 shown in structure, can also make as Fig. 4, version shown in Figure 5.

The above be the utility model preferred embodiment, it does not constitute the restriction to the utility model protection range, so long as realize that with essentially identical means the purpose of this utility model all should belong to protection range of the present utility model.

Claims

1. soft-magnetic ferrite core, it comprises base plate (1), limit leg (2) and center pillar (3), it is characterized in that: center pillar (3) is located at the middle part of base plate (1), limit leg (2) is located at the periphery of base plate (1), it between base plate (1) and the limit leg (2) the ring winding window (4) that can hold coil, the outer surface of limit leg (2) is surrounded by a plurality of planes (21), and the external structure of this magnetic core is polygon, and limit leg (2) is provided with at least one and goes out wire casing (21).

2. a kind of soft-magnetic ferrite core according to claim 1 is characterized in that: the external structure of described magnetic core is square, and coiling window (4) is annular, and center pillar (3) is cylindrical.

3. according to claim 1 or 2 described a kind of soft-magnetic ferrite cores, it is characterized in that: the periphery of described limit leg (2) is arranged with four and goes out wire casing (21).

4. according to claim 1 or 2 described a kind of soft-magnetic ferrite cores, it is characterized in that: be provided with groove (11) going out the corresponding base plate of wire casing place with wherein one or more of limit leg.

5. according to claim 1 or 2 described a kind of soft-magnetic ferrite cores, it is characterized in that: the back side of described base plate (1) is provided with draw-in groove (12).