CN204792344U

CN204792344U - Toroidal transformer iron core

Info

Publication number: CN204792344U
Application number: CN201520499184.0U
Authority: CN
Inventors: 王大彦
Original assignee: Xfrmtronics Technologies Co Ltd
Current assignee: Xfrmtronics Technologies Co Ltd
Priority date: 2015-07-10
Filing date: 2015-07-10
Publication date: 2015-11-18
Anticipated expiration: 2025-07-10

Abstract

The utility model discloses a toroidal transformer iron core, the annular ring that is the rectangle including the cross section, the surface of annular ring is including connecting gradually internal surface, upper surface, surface and lower surface, the internal surface with the corner of upper surface is equipped with first radius angle, the upper surface with the corner of surface is equipped with second radius angle, the surface with the corner of lower surface is equipped with third radius angle, the lower surface with the internal surface and the corner be equipped with fourth radius angle, the winding on the surface of annular ring has the insulating film. The utility model discloses a be equipped with first radius angle, second radius angle, third radius angle and fourth radius angle on the annular ring to be equipped with the insulating film on the surface at the annular ring, can prevent like this that annular ring corner from haring the enameled wire easily, also can prevent the burr damage enameled wire on annular ring surface, thereby improve the life of transformer.

Description

A kind of ring transformer cores

Technical field

The utility model relates to electronics and field of electrical equipment, refers to a kind of ring transformer cores especially.

Background technology

Ring transformer cores on existing market four corners are all sharper right angle or oblique angle, and also there are many burrs on surface, easily causes damage to enamelled wire, have a strong impact on the useful life of transformer, therefore, must make improvements for above-mentioned defect.

Utility model content

The utility model proposes a kind of ring transformer cores, solve short problem in transformer in prior art useful life.

The technical solution of the utility model is achieved in that

A kind of ring transformer cores, comprise the annular ring that cross section is rectangle, the surface of annular ring comprises and connects inner surface, upper surface, outer surface and lower surface successively, the corner of described inner surface and described upper surface is provided with the first rounding, the corner of described upper surface and described outer surface is provided with the second rounding, the corner of described outer surface and described lower surface is provided with the 3rd rounding, described lower surface and described inner surface and corner be provided with the 4th rounding, the surface of annular ring is wound with dielectric film.

Further, described dielectric film is PET dielectric film.

Further, the bottom of annular ring and the top of annular ring are all provided with core insulation paper.

Further, described core insulation paper is the soft composite insulating foil of polyester film and polyester fibre non woven fabric.

Further, described first rounding, described second rounding, described 3rd rounding and described 4th rounding is in the same size.

Enforcement the beneficial effects of the utility model have:

The utility model is by being provided with the first rounding, the second rounding, the 3rd rounding and the 4th rounding on the annular rings, and be provided with dielectric film on the surface at annular ring, can prevent annular ring corner from easily damaging enamelled wire like this, also can prevent the burr damage enamelled wire on annular ring surface, thus improve the useful life of transformer.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the sectional structure schematic diagram of a kind of ring transformer cores of the utility model embodiment;

Figure number and explanation thereof:

1, annular ring; 2, core insulation paper; 3, dielectric film; 4, the first rounding; 5, the second rounding; 6, the 3rd rounding; 7, the 4th rounding.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.

With reference to Fig. 1, a kind of ring transformer cores that the utility model provides, comprise the annular ring 1 that cross section is rectangle, the surface of annular ring 1 comprises and connects inner surface, upper surface, outer surface and lower surface successively, the corner of inner surface and upper surface is provided with the first rounding 4, the corner of upper surface and outer surface is provided with the second rounding 5, the corner of outer surface and lower surface is provided with the 3rd rounding 6, lower surface and inner surface and corner be provided with the 4th rounding 7, the surface of annular ring 1 is wound with dielectric film 3.Can prevent annular ring 1 corner from easily damaging enamelled wire like this, also can prevent the burr damage enamelled wire on annular ring 1 surface, thus improve the useful life of transformer.

Dielectric film 3 is PET dielectric film, certainly can change the electrical insulation film of following other according to the requirement of reality, and be not limited to the PET dielectric film in preferred embodiment.

The bottom of annular ring 1 and the top of annular ring 1 are all provided with core insulation paper 2.Core insulation paper 2 is located between annular ring 1 and dielectric film 3; core insulation paper 2 just covers upper surface, lower surface, the first rounding 4, second rounding 5, the 3rd rounding 6 and the 4th rounding 7; can use minimum core insulation paper 2 that enamelled wire just can be made to be protected further like this, core insulation paper 2 is the soft composite insulating foil of polyester film and polyester fibre non woven fabric.Better, when being less than the coiling of 1.2mm copper cash for wire diameter after annular ring 1 chamfering, only need just can coiling after winding PET dielectric film; Wire diameter is greater than the enamelled wire coiling of 1.2mm, and carrying out winding dielectric film 3 insulation again cover one deck core insulation paper 2 with top bottom annular ring 1 after can be better, ensures that enamelled wire does not sustain damage further.More can save material like this, also can the serviceability of maximized raising transformer.

First rounding 4, second rounding 5, the 3rd rounding 6 and the 4th rounding 7 in the same size.Certainly, can according to the instructions for use of transformer reality, the size of suitable adjustment first rounding 4, second rounding 5, the 3rd rounding 6 and the 4th rounding 7.

In sum, the utility model is by being provided with the first rounding, the second rounding, the 3rd rounding and the 4th rounding on the annular rings, and be provided with dielectric film on the surface at annular ring, can prevent annular ring corner from easily damaging enamelled wire like this, also can prevent the burr damage enamelled wire on annular ring surface, thus improve the useful life of transformer.

The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.

Claims

1. a ring transformer cores, comprise the annular ring that cross section is rectangle, it is characterized in that, the surface of annular ring comprises and connects inner surface, upper surface, outer surface and lower surface successively, the corner of described inner surface and described upper surface is provided with the first rounding, the corner of described upper surface and described outer surface is provided with the second rounding, the corner of described outer surface and described lower surface is provided with the 3rd rounding, described lower surface and described inner surface and corner be provided with the 4th rounding, the surface of annular ring is wound with dielectric film.

2. ring transformer cores according to claim 1, is characterized in that, described dielectric film is PET dielectric film.

3. ring transformer cores according to claim 1, is characterized in that, the bottom of annular ring and the top of annular ring are all provided with core insulation paper.

4. ring transformer cores according to claim 3, is characterized in that, described core insulation paper is the soft composite insulating foil of polyester film and polyester fibre non woven fabric.

5. ring transformer cores according to claim 1, is characterized in that, described first rounding, described second rounding, described 3rd rounding and described 4th rounding in the same size.