CN2475107Y

CN2475107Y - Inductive assembly with various air gap combination

Info

Publication number: CN2475107Y
Application number: CN 01219702
Authority: CN
Inventors: 孙晓东; 刘艳芳
Original assignee: Lite On Electronics Inc
Current assignee: Lite On Technology Corp
Priority date: 2001-04-18
Filing date: 2001-04-18
Publication date: 2002-01-30
Anticipated expiration: 2011-04-18

Abstract

The utility model relates to an inductive component with a plurality of gas gap combinations, comprising a magnetic iron core and a metal winding interwining the iron core, and the iron core is provided with a plurality of gas gap combinations, the little gas gap part is provided with larger inductance amount to decrease the harmonic distortion with light load input, so as to meet the harmonic standard, and the large gas gap part is assured to be provided with sufficiently large inductance amount with low input voltage full load output, so as to make the inductance unsaturated, and reduce the temperature rising, improve the power supply efficiency, and enhance the whole electrical performance.

Description

Inductive component with multiple air gap combination

The utility model relates to a kind of inductive component with multiple air gap combination, and particularly a kind of design that utilizes the combination of air gap different-thickness makes inductance that preferable electric property can be provided.

At present, known unsaturated when making inductance pass through big electric current, except the silicon steel sheet volume that strengthens inductance, usually add that to inductance certain air gap increases magnetoimpedance, to prevent the magnetic saturation phenomenon, the inductance 1a of the EI magnetic core shown in Figure 1A and Figure 1B is provided with the uniform air gap 13a of a layer thickness between its I shape silicon steel sheet 11a and the E shape silicon steel sheet 12a.

But big or small single because of air gap 13a if air gap 13a is less, will make inductance 1a when low input fully loaded (when electric current is big) output, cause inductance 1a near saturated, and inductance value diminishes, and temperature raises; If air gap 13a is bigger, to make inductance 1a when underloading (electric current comparatively hour) input, do not have enough big inductance value and prevent harmonic distortion, so be difficult under underloading and full load conditions, satisfy simultaneously the harmonic standard of our needs, also can't descend and hang down temperature rise, improve power-efficient in the fully loaded output of low output voltage.

So as from the foregoing, above-mentioned known inductance with single air gap on reality is used, obviously has inconvenience and exists with shortcoming, and can wait to be improved.

In view of this, in order to improve known above-mentioned every shortcoming, main purpose of the present utility model is to provide a kind of inductive component with multiple air gap combination, and it adopts the combination of multiple air gap, but not single air gap makes the electric property of inductance change along with different air gap combinations.

In order to achieve the above object, the utility model provides a kind of Inductive component with multiple air gap combination, its wire coil by magnetive cord and Wound core configuration is formed, and this iron core is made up of several silicon steel sheets, this iron core is provided with the combination of two above air gaps again, and the curved surface of this air gap can be cascaded surface, inclined-plane or continuous male and fomale(M﹠F).

In order further to understand the utility model is to reach technology, means and the effect that predetermined purpose is taked, see also following about detailed description of the present utility model and accompanying drawing, the utility model is described in detail, but shown in accompanying drawing only provide with reference to and the explanation usefulness, be not to be used for the utility model is limited.

Figure 1A is the stereogram of known inductance;

Figure 1B is the front view of known inductance;

Fig. 2 A is the stereogram of pad of the present utility model with the inductive component of the I shape silicon steel sheet of the scraps of paper;

Fig. 2 B is the front view of pad of the present utility model with the inductive component of the I shape silicon steel sheet of the scraps of paper;

Fig. 3 A is the left side view of the utility model to the punching press of E shape silicon steel sheet;

Fig. 3 B is the right side view of the utility model to the punching press of E shape silicon steel sheet;

Fig. 4 is the curve relation figure of the utility model inductance value and electric current;

Fig. 5 A is that the curved surface of the utility model air gap is the front view on inclined-plane;

Fig. 5 B is that the curved surface of the utility model air gap is the end view of continuous male and fomale(M﹠F).

See also shown in Fig. 2 A and Fig. 2 B, the utility model is a kind of inductive component with multiple air gap combination, it is formed by magnetive cord 1 and around the wire coil 2 of iron core 1 configuration, and this iron core 1 is made up of several silicon steel sheets, it can form as shown in the figure I shape silicon steel sheet 11 and E shape silicon steel sheet 12, and the upper and lower side of this I shape silicon steel sheet 11 is filled up respectively with the scraps of paper 3, to produce the air gap 13 of different-thickness, make the curved surface 131 of this air gap 13 be cascaded surface, and it is divided into small air gap part 132 and air gaps part 133, to form the combination of different air gap 13.

The acquisition of described air gap 13 is except that filling up with the scraps of paper 3, also can otherwise obtain, shown in Fig. 3 A and Fig. 3 B, when this wire coil 2 is not inserted, also can be earlier to middle protuberance 121 die cut of this E shape silicon steel sheet 12, to produce small air gap part 132 and air gaps part 133.

Be under 150 watts the power supply in design condition, set small air gap part 132 and be 5mil (1mil is the one thousandth inch), air gaps part 133 is 45mil, its shared separately air gap 13 areas are 50%, be that the area ratio is 1: 1, the curved line relation of inductance value that is produced and electric current (shown in the solid line of Fig. 4) then, itself and single air gap 13 made comparisons mutually for inductance value that 12mil produced and the curved line relation (shown in the dotted line of Fig. 4) of electric current, then can learn under the situation of big electric current (between 3 amperes to 4 amperes) and little electric current (about O.9 below the ampere) to have two kinds of air gaps, 13 pairing inductance values and have single air gap 13 pairing inductance values and will be greater.

In view of the above, described small air gap part 132 can guarantee have bigger inductance value to satisfy harmonic distortion under the underloading input, 133 of described air gaps parts guarantee under the fully loaded output of low input enough big inductance value is arranged, be not saturation condition, and the reduction temperature rise improves power-efficient, so, electric property will change along with the combination of different air gap 13, and also can therefrom find out air gap 13 combinations that more meet the demands.

In addition, shown in Fig. 5 A and Fig. 5 B, the curved surface 131 of described air gap 13 also can be multiple shapes such as inclined-plane or continuous male and fomale(M﹠F).

So by the inductive component with multiple air gap combination of the present utility model, it has characteristics as described below:

(1) more satisfies harmonic standard under the underloading;

(2) low-voltage output can reduce temperature rise under being fully loaded with;

(3) improve power-efficient;

(4) reduce volume.

But, the above only is detailed description and accompanying drawing to one of the utility model most preferred embodiment, feature of the present utility model is not limited thereto, its all scopes should be as the criterion with following claim scope, under the situation of all embodiment in the spirit variation similar that does not deviate from the utility model claim with it, any equivalence of being done changes, and all should be contained among the utility model.

Claims

1. one kind has the inductive component that multiple air gap makes up, it is reached by magnetive cord is formed around the wire coil of core configuration, it is characterized in that, this iron core is provided with the air gap more than two, and the curved surface of this air gap is cascaded surface, inclined-plane or continuous male and fomale(M﹠F), and the electric property of this Inductive component is changed along with the combination of different air gap.

2. the Inductive component with multiple air gap combination as claimed in claim 1 is characterized in that described iron core is made up of several silicon steel sheet materials.