CN202332507U

CN202332507U - Driving transformer

Info

Publication number: CN202332507U
Application number: CN2011205025064U
Authority: CN
Inventors: 陈明中; 欧阳运华
Original assignee: SUNSHINE ELECTRONICS CO Ltd
Current assignee: SUNSHINE ELECTRONICS CO Ltd
Priority date: 2011-12-06
Filing date: 2011-12-06
Publication date: 2012-07-11
Anticipated expiration: 2021-12-06

Abstract

The utility model discloses a driving transformer which comprises a transformer framework where a plurality of windings are wound. Magnetic core groups are inserted into two ends of a through hole of the transformer framework, magnetic core steel clamps for clamping fixed magnetic cores are arranged on the peripheries of the magnetic core groups, each Magnetic core group is composed of a pair of U-shaped magnetic cores, one ends of the U-shaped magnetic cores inserted into the transformer framework are set into flat embedded portions, the height of each embedded portion is lower than that of each of other ends of the U-shaped magnetic cores, and the height of each of other ends of U-shaped magnetic cores is smaller than or equal to the height of the upper end of the transformer framework. The U-shaped magnetic cores with the embedded portions are used by the driving transformer, and when a product is designed, users only need to arrange the appropriate windings on the transformer framework. Besides, according to the heights of the windings, the heights of the embedded portions of the U-shaped magnetic cores are set correspondingly so that after the embedded portions are embedded into the transformer framework, the heights of the U-shaped magnetic cores are not higher than those of the transformer framework and the windings, and flattening production of the transformer framework and the magnetic cores can be carried out.

Description

A kind of driving transformer

Technical field

The utility model relates to transformer, specifically is meant a kind of driving transformer of use for electronic products.

Background technology

The main effect of driving transformer is that the driving switch plumber does.On circuit for power conversion, driving transformer is responsible for the control signal of PWM integrated circuit output amplified with driving switch and is carried out work, can also physical isolation be carried out in the higher-pressure region of switching tube work and the low-pressure area of integrated circuit work simultaneously.Driving transformer is extensively in electronic products such as audio frequency and video, game machine.Along with the thickness of these electronic products is more and more thinner, existing driving transformer can't satisfy the requirement that electronic product updates.

The utility model content

The purpose of the utility model provides the driving transformer of a kind of low clearance, flattening.

To achieve these goals; The utility model is designed a kind of driving transformer; It comprises the transformer framework that is wound with some windings, is inserted with magnetic core set at the two ends of the through hole of transformer framework, and the outer periphery of described magnetic core set is useful on the magnetic core steel folder of the magnetic core that is fixedly clamped; Described magnetic core set is made up of a pair of U type magnetic core; U type magnetic core be inserted into transformer framework in an end be arranged to the Embedded Division of flat, the height of other end of the aspect ratio U type magnetic core of described Embedded Division is low, the height of other end of U type magnetic core is less than or equal to the upper end height of transformer framework.

The height of described Embedded Division 4 be other end of U type magnetic core height 1/3～4/5.

The height of the driving transformer that described transformer framework, magnetic core steel folder and the U type magnetic core that is wound with some windings formed is at 5～12mm.

The use of the utility model driving transformer has the U type magnetic core of Embedded Division; Can be when deisgn product, only need configure suitable winding at transformer framework, and according to the height of winding; The height of the Embedded Division of relative set U type magnetic core; After making that Embedded Division is inserted into transformer framework, the height of U type magnetic core can not be higher than the height of transformer framework and winding, thereby can make transformer framework and magnetic core carry out the production of flattening; Can accomplish on a large scale integrated flow production line.The utility model driving transformer becomes driving transformer into low clearance and flat on the basis that does not reduce electrical performance, can satisfy the requirement of ultra-thinization of electronic product.

Description of drawings:

Fig. 1 is the perspective view of the utility model driving transformer;

Fig. 2 is the decomposition texture sketch map of Fig. 1.

Embodiment

For the ease of those skilled in the art's understanding, will combine specific embodiment and accompanying drawing that the structural principle of the utility model is done further to describe in detail below.

Like Fig. 1, shown in Figure 2; A kind of driving transformer; It comprises the transformer framework 1 that is wound with some windings, is inserted with magnetic core set at the two ends of the through hole of transformer framework 1, and the outer periphery of described magnetic core set is useful on the magnetic core steel folder 2 of the magnetic core that is fixedly clamped; Described magnetic core set is made up of a pair of U type magnetic core 3; U type magnetic core be inserted into transformer framework 1 in an end be arranged to the Embedded Division 4 of flat, the height of other end of the aspect ratio U type magnetic core 3 of described Embedded Division 4 is low, the height of other end of U type magnetic core 3 is less than or equal to the upper end height of transformer framework 1.The height of described Embedded Division 4 be U type magnetic core 3 other ends height 1/3～4/5.The height of the driving transformer that described transformer framework 1, magnetic core steel folder 2 and the U type magnetic core 3 that is wound with some windings formed is at 5～12mm.

The utility model driving transformer has following characteristics: 1. coupling capacitance is low, makes it to have very high antijamming capability; 2. leakage inductance is little, has guaranteed better output pulse waveform; 3. there are not switch time-delay, instantaneous through-put power height; 4. dielectric strength is high, and is safe and reliable; 5. totally-enclosed, machinery and environmental resistance are good; 6. advantages of small volume, compact conformation, good looking appearance, stitch perforated installation, easy to use.

The utility model driving transformer service condition: 1. ambient temperature :-40 ℃ ± 85 ℃; 2. relative humidity: when temperature is 40 ℃ less than 90%; 3. atmospheric pressure: 650～800mmHg; The insulation thermal endurance class of the utility model driving transformer: F level (155 ℃); The security feature of the utility model driving transformer: 1. insulation resistance: during normality greater than 1000M Ω; 2. anti-flammability: meet the UL94-V0 level.

Foregoing is merely the preferred embodiment of the utility model, is not the embodiment that is used to limit the utility model, and those skilled in the art are according to the design of the utility model, and appropriate adaptation of having done or modification all should be within the protection ranges of the utility model.

Claims

1. driving transformer; Comprise the transformer framework (1) that is wound with some windings; Two ends at the through hole of transformer framework (1) are inserted with magnetic core set; The outer periphery of described magnetic core set is useful on the magnetic core steel folder (2) of the magnetic core that is fixedly clamped, and it is characterized in that: described magnetic core set is made up of a pair of U type magnetic core (3), U type magnetic core be inserted into transformer framework (1) in an end be arranged to the Embedded Division (4) of flat; The height of other end of the aspect ratio U type magnetic core (3) of described Embedded Division (4) is low, and the height of other end of U type magnetic core (3) is less than or equal to the upper end height of transformer framework (1).

2. driving transformer according to claim 1 is characterized in that: the height of described Embedded Division (4) be other end of U type magnetic core (3) height 1/3～4/5.

3. driving transformer according to claim 2 is characterized in that: the height of the driving transformer that described transformer framework (1), magnetic core steel folder (2) and the U type magnetic core (3) that is wound with some windings formed is at 5～12mm.