CN214043382U

CN214043382U - Anti-interference toroidal transformer core

Info

Publication number: CN214043382U
Application number: CN202022794057.7U
Authority: CN
Inventors: 肖俊承; 王一龙; 李闯; 江永法
Original assignee: Eaglerise Electric and Electronic China Co Ltd; Foshan Shunde Eaglerise Electric Power Technology Co Ltd; Jian Eaglerise Electric Co Ltd
Current assignee: Eaglerise Electric and Electronic China Co Ltd; Foshan Shunde Eaglerise Electric Power Technology Co Ltd; Jian Eaglerise Electric Co Ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-08-24
Anticipated expiration: 2030-11-27

Abstract

The utility model discloses an anti-interference annular transformer iron core, which comprises an annular transformer iron core body, wherein small annular transformer iron cores are movably sleeved on the outer side of the top of the annular transformer iron core body, the number of the small annular transformer iron cores is two, and one group of small annular transformer iron cores are movably connected with a PET isolation gasket at the bottom; through having divided into a plurality of little annular iron cores at toroidal transformer core, keep apart with the PET gasket between every little iron core, two three to three five millimeter thick shielding piece (blade of silicon steel material) at zero point on the upper and lower surface of iron core each adopt silica gel to bond, after the winding coil on this toroidal transformer core, the magnetic line of force evenly distributed of every little iron core is opened, and iron core magnetic field magnetic leakage has just been shielded the part by surface shielding piece (blade of silicon steel material) about the iron core and has played the effect that reduces the magnetic leakage.

Description

Anti-interference toroidal transformer core

Technical Field

The utility model belongs to the technical field of transformer core, concretely relates to low magnetic leakage, anti-interference toroidal transformer core.

Background

The toroidal transformer is widely applied to household appliances and other electronic equipment with higher technical requirements, the toroidal transformer is mainly used as a power transformer and an isolation transformer, and the transformer is widely applied to the aspects of professional power amplifiers, active sound boxes, subwoofers, courage machines and the like.

The toroidal transformer in the prior art is generally formed by winding a silicon steel sheet, so that when the iron core is made into the toroidal transformer, the transformer can have the problems of magnetic leakage prevention and poor anti-interference effect, and therefore the anti-interference toroidal transformer iron core is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a toroidal transformer iron core structure is provided, adopt annular iron core upper and lower surface shield piece to obstruct the magnetic field and expose the part, its magnetic leakage prevention, anti-interference effect are better.

In order to solve the technical problem, the utility model provides a toroidal transformer iron core structure, including the iron core body, toroidal transformer iron core body includes little iron core, keeps apart PET, shielding plate (blade of silicon steel material) toroidal transformer iron core by a plurality of little iron cores with keep apart the PET gasket combination together, form a completion toroidal transformer iron core.

After the structure more than adopting, compared with the prior art, the utility model, have following advantage:

the utility model discloses an annular transformer iron core, because annular transformer iron core has divided into a plurality of little annular iron cores, keep apart with the PET gasket between every little iron core, each one slice (silicon steel sheet material) of the thick shielding piece of iron core upper and lower surface 0.23-0.35mm adopts silica gel to bond, after winding coil on this annular transformer iron core, the magnetic line of force evenly distributed of every little iron core is opened, iron core magnetic field magnetic leakage has just been shielded the part by surface shield piece (silicon steel sheet material) about the iron core and has played the effect that reduces the magnetic leakage.

After verification: the position where the magnetic leakage of the iron core is the maximum is the position of the excircle of the inner hole of the iron core, and the magnetic leakage values of the excircle and the side surface of the iron core are the minimum, so the outer diameter of the shielding sheets on the upper surface and the lower surface of the iron core is 10-20mm smaller than the outer diameter of the iron core.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. an annular transformer core body; 2. a small toroidal transformer core; 3. a PET spacer; 4. a shield sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: the utility model provides an anti-interference toroidal transformer core, includes toroidal transformer core body 1, its characterized in that: ringlet shape transformer iron core 2 has been cup jointed in the top outside activity of ring transformer iron core body 1, ringlet shape transformer iron core 2's quantity is two sets of, the bottom swing joint of a set of ringlet shape transformer iron core 2 has PET isolation gasket 3, the bottom swing joint of PET isolation gasket 3 is in another group ringlet shape transformer iron core 2's top, the inboard activity of PET isolation gasket 3 is cup jointed in ring transformer iron core body 1's the outside, ringlet shape transformer iron core 2's top swing joint has shielding piece 4, shielding piece 4's quantity is two, another shielding piece 4's top swing joint is in another group ringlet shape transformer iron core 2's bottom, shielding piece 4's inboard activity is cup jointed in ring transformer iron core body 1's the outside.

In order to facilitate the use of the device, in this embodiment, preferably, a circular hole is formed in the upper surface of the PET isolation gasket 3, and the annular transformer core body 1 is movably sleeved in the circular hole.

In order to facilitate the use of the device, in the present embodiment, it is preferable that the thickness between the upper surface and the lower surface of the shielding plate 4 is zero point two three to zero point three five millimeters.

In order to facilitate the use of the device, in the present embodiment, it is preferable that the height of the small toroidal transformer core 2 is five to ten millimeters, and the thickness of the PET spacer 3 is zero five to zero two-five millimeters.

The utility model discloses a theory of operation and use flow: the utility model discloses dustproof toroidal transformer iron core includes toroidal transformer iron core body 1, and toroidal transformer iron core body 1 comprises two of the shielding sheet 4 silicon steel sheet materials that surface two three at zero point to three five millimeters thick at zero point about a plurality of little toroidal transformer iron core 2, a plurality of PET isolation gasket 3 and the iron core. The height of the small annular transformer iron core 2 is between five and ten millimeters, the thickness of the PET isolation gasket 3 is between zero point and five and zero point and two and five millimeters, and the thickness of the shielding sheet 4 made of the silicon steel sheet is between two and three and five millimeters.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an anti-interference toroidal transformer core, includes toroidal transformer core body (1), its characterized in that: a small annular transformer iron core (2) is movably sleeved on the outer side of the top of the annular transformer iron core body (1), the number of the small annular transformer iron cores (2) is two, the bottom of one group of the small annular transformer iron cores (2) is movably connected with a PET isolation gasket (3), the bottom of the PET isolation gasket (3) is movably connected with the top of the other group of small annular transformer iron cores (2), the inner side of the PET isolation gasket (3) is movably sleeved on the outer side of the annular transformer iron core body (1), the top of the small annular transformer iron core (2) is movably connected with a shielding sheet (4), the number of the shielding sheets (4) is two, the top of the other shielding sheet (4) is movably connected with the bottom of the other group of small annular transformer iron cores (2), the inner side of the shielding sheet (4) is movably sleeved on the outer side of the annular transformer iron core body (1).

2. The anti-tamper toroidal transformer core of claim 1, wherein: circular holes are formed in the upper surface of the PET isolation gasket (3), and the annular transformer iron core body (1) is movably sleeved in the circular holes.

3. The anti-tamper toroidal transformer core of claim 1, wherein: the thickness between the upper surface and the lower surface of the shielding sheet (4) is from two tenths of one millimeter to three tenths of one millimeter.

4. The anti-tamper toroidal transformer core of claim 1, wherein: the height of the small annular transformer iron core (2) is five to ten millimeters, and the thickness of the PET isolation gasket (3) is zero point, five to two and five millimeters.