CN201383413Y

CN201383413Y - Magnetic core of soft magnetic ferrite

Info

Publication number: CN201383413Y
Application number: CN200920050789U
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: 2009-01-22
Filing date: 2009-01-22
Publication date: 2010-01-13
Anticipated expiration: 2019-01-22

Abstract

The utility model relates to a magnetic core of a soft magnetic ferrite, which comprises a base plate, side legs and a central column, wherein the central column is arranged at the middle part of the base plate, a winding window for accommodating coils is formed between the side legs and the central column, the side legs are distributed on the left side and the right side of the base plate, a front opening and a rear opening are formed between the two end parts of the left side leg and the right side leg, and the widths of the front opening and the rear opening are not symmetrical. The design not only ensures that the side legs of the magnetic core have sufficient magnetic-conductive areas, but also fully utilizes the effective space of the magnetic core, improves the efficiency and leads to a more compact structure of the magnetic core.

Description

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., along with 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, though this type products 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.Therefore, develop the sectional area (Ae value) that should guarantee magnetic core, cube magnetic core little, rational in infrastructure is the direction that the designer constantly pursues again.

The utility model content

In order to overcome the deficiencies in the prior art, the utility model provides the cross section connection and reasonable arrangement of a kind of compact conformation, magnetic core, electromagnetic interference to external world little, the soft-magnetic ferrite core that anti-electromagnetic interference is effective.

The technical scheme that the utility model adopted is:

Soft-magnetic ferrite core, it comprises base plate, limit leg and center pillar, center pillar is located at the middle part of base plate, it between limit leg and the center pillar coiling window that can hold coil, described limit leg is distributed in the left and right sides of base plate, form forward and backward opening between the both ends of limit, left and right sides leg, the width of forward and backward opening is asymmetric.

The beneficial effects of the utility model are: between the both ends of limit, left and right sides leg formed before, the after-opening width is inconsistent, when assembling with coil, the opening part that wire terminal is placed on broad that goes out with coil, the width of openings at one side then dwindles as far as possible in addition, this design had both guaranteed that the limit leg of magnetic core had enough magnetic conductive areas, fill part again and utilized the useful space of magnetic core, improved the efficient of product, make the more compact structure of magnetic core, in addition, coil is surrounded by limit, left and right sides leg, makes the Electro Magnetic Compatibility of product good, it is very little to produce electromagnetic interference to external world, has also improved the antijamming capability of itself on the other hand.

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;

Fig. 3 is the stereogram of Fig. 2;

Fig. 4 is an another kind of execution mode of the present utility model;

Fig. 5 is the stereogram of Fig. 4;

STRUCTURE DECOMPOSITION figure when Fig. 6 is the utility model manufacturing transformer.

Embodiment

With reference to Fig. 2, soft-magnetic ferrite core shown in Figure 3, 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, it between limit leg 2 and the center pillar 3 the coiling window 4 that can hold coil, limit leg 2 is distributed in the left and right sides of base plate 1, form forward and backward opening 5,6 between the both ends of limit, left and right sides leg 2, the width of forward and backward opening 5,6 is asymmetric.According to the needs of spatial area, the design's magnetic core center pillar 3 can be circular cylinder, also can be that two chimbs of runway shape are respectively towards forward and backward opening 5,6 as Fig. 4, the runway shape cylinder that is shown in Figure 5.

With reference to transformer structure shown in Figure 6, the coil 8 of in the magnetic core 7 of bottom, packing into, refill upper top magnetic core 9, form a transformer integral body, the magnetic conductive loop of this transformer is the center pillar from the top magnetic core 9---center pillar of the bottom magnetic core 7---base plate of bottom magnetic core 7---the limit leg of bottom magnetic core 7---the limit leg of top magnetic core 9---base plate of the top magnetic core 9---center pillar of top magnetic core 9.Formed forward and backward A/F is inconsistent between the leg both ends, limit, the design left and right sides, when assembling with coil, the opening part that wire terminal is placed on broad that goes out with coil, the width of openings at one side then dwindles as far as possible in addition, this design had both guaranteed that the limit leg of magnetic core had enough magnetic conductive areas, fill part again and utilized the useful space of magnetic core, improved the efficient of product, make the more compact structure of magnetic core.In addition, in the coiling window, the limit leg of magnetic core encases coil 8 up and down, plays the shielding protection effect because coil 8 is packed into, in the course of the work, neither can produce and produce electromagnetic interference to external world, has improved the antijamming capability of itself simultaneously again.

Claims

1. 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), it between limit leg (2) and the center pillar (3) the coiling window (4) that can hold coil, it is characterized in that: described limit leg (2) is distributed in the left and right sides of base plate (1), form forward and backward opening (5,6) between the both ends of limit, left and right sides leg (2), the width of forward and backward opening (5,6) is asymmetric.

2. soft-magnetic ferrite core according to claim 1 is characterized in that: described center pillar (3) is for circular.

3. soft-magnetic ferrite core according to claim 1 is characterized in that: described center pillar (3) is runway shape, and two chimbs of runway shape are respectively towards forward and backward opening (5,6).