CN101692388A

CN101692388A - Ultra-thin transformer

Info

Publication number: CN101692388A
Application number: CN200910180551A
Authority: CN
Inventors: 朱锦良
Original assignee: JIANGSU TAICHANG ELECTRONICS CO Ltd
Current assignee: JIANGSU TAICHANG ELECTRONICS CO Ltd
Priority date: 2009-10-20
Filing date: 2009-10-20
Publication date: 2010-04-07

Abstract

The invention discloses an ultra-thin transformer, which comprises a shell, a framework, a primary coil, a secondary coil, a plurality of pins and an iron core, wherein the framework is arranged in the shell, the primary coil and the secondary coil are wound on the framework, the plurality of pins are connected with the primary coil and the secondary coil respectively and at least part of the pins are exposed outside the shell, and the iron core is arranged inside the framework. The pin is provided with a first extension part extended from the outside of the shell to the horizontal direction and a second extension part extended vertically downwards from the tail end of the first extension part, and the first extension part also comprises a bent part which is bent upwards. The invention solves the problems of the prior art, and provides the ultra-thin transformer with smaller integral height.

Description

Ultra-thin transformer

Technical field

The present invention relates to a kind of ultra-thin transformer.

Background technology

Along with the high speed development of very lagre scale integrated circuit (VLSIC) and printed circuit board surface packing density, the power-supply system miniaturization development that appears as of ultra-thin transformer provides possibility.Ultra-thin transformer of the prior art as shown in Figure 1, it comprises housing 1, be arranged on the skeleton 2 in the housing 1, be wrapped in primary coil 3 and secondary coil 4 on the skeleton 2, a plurality ofly be connected with primary coil 3 and secondary coil 4 respectively and have at least part to be exposed to the pin 5 of housing 1 outside, be arranged in the iron core 6 of skeleton 2 inside, second extension 52 that pin 5 has from housing 1 outside first extension 51 that extends to horizontal direction and extends straight down from the end of first extension 51 is recently realized adjusting to output voltage by the number of turn of adjusting input coil and output winding.As can be seen, the whole height of this transformer is mainly decided by pin height, iron core diameter and coil diameter three, wherein the variation of iron core diameter and coil diameter all can cause the variation of transformer electric property, the pin height must be a certain fixed value according to the use standard in addition, if too short then can cause and circuit board connection stability problem, so the whole height of the ultra-thin transformer under the prior art is difficult to further be reduced.

Summary of the invention

For overcoming above-mentioned shortcoming, the object of the present invention is to provide a kind of ultra-thin transformer with smaller integral height.

In order to reach above purpose, the technical solution used in the present invention is: a kind of ultra-thin transformer, it comprises housing, be arranged on the skeleton in the described housing, be wrapped in primary coil and secondary coil on the described skeleton, a plurality ofly be connected with described primary coil and secondary coil respectively and have at least part to be exposed to the pin of described outside, be arranged in the iron core of described skeleton inside, second extension that described pin has first extension that extends to horizontal direction from described outside and extends straight down from the end of described first extension, described first extension also comprises a kink that bends upward, this bending part makes each pin all bend certain distance upward, because the size of second extension of each pin must be fixed, thereby reduced the whole height of ultra-thin transformer.

Preferably, described primary coil comprises a plurality of input coil groups that are arranged in order, and described secondary coil comprises a plurality of output winding groups that are arranged in order.

Further, described skeleton has an isolation part, and described primary coil and described secondary coil lay respectively at the both sides of described isolation part.

Further, described skeleton is made up of primary coil skeleton and secondary coil skeleton, described primary coil skeleton is sheathed on the outside of described iron core, described primary coil is wound on the described primary coil skeleton, described secondary coil skeleton is sheathed on the outside of described primary coil, and described secondary coil is wound on the described secondary coil skeleton.

Owing to adopted technique scheme, make that the whole height of ultra-thin transformer of the present invention is reduced significantly, for the closeness of power supply miniaturization and integrated circuit outstanding contribution is arranged.

Description of drawings

Accompanying drawing 1 is the schematic diagram of ultra-thin transformer in the prior art;

Accompanying drawing 2 is the front view of ultra-thin transformer embodiment of the present invention;

Accompanying drawing 3 is the vertical view of ultra-thin transformer embodiment of the present invention;

Accompanying drawing 4 is along the cutaway view of A-A in the accompanying drawing 3.

Wherein: 1, housing; 2, skeleton; 3, primary coil; 4, secondary coil; 5, pin; 6, iron core; 21, isolation part; 51, first extension; 52, second extension; 53, kink.

Embodiment

Below in conjunction with accompanying drawing preferred embodiment of the present invention is described in detail, thereby protection scope of the present invention is made more explicit defining so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that.

Referring to accompanying drawing 2 to accompanying drawing 4, a kind of ultra-thin transformer, it comprises housing 1, be arranged on skeleton 2 in the housing 1, be wrapped in primary coil 3 and secondary coil 4 on the skeleton 2, a plurality of be connected with primary coil 3 and secondary coil 4 respectively and have at least part be exposed to housing 1 outside pin 5, be arranged in the iron core 6 of skeleton 2 inside, skeleton 2 has an isolation part 21, and primary coil 3 and secondary coil 4 lay respectively at the both sides of isolation part 21.

In the present embodiment, primary coil 3 comprises a plurality of input coil groups that are arranged in order, and secondary coil 4 comprises a plurality of output winding groups that are arranged in order, and recently realizes adjusting to output voltage by the number of turn of adjusting input coil and output winding.

Second extension 52 that each pin 5 has from housing 1 outside first extension 51 that extends to horizontal direction and extends straight down from the end of first extension 51, first extension 51 also comprises a kink 53 of bending upward, this bending part 53 makes each pin 5 all bend certain distance upward, because the size of second extension 52 of each pin 5 must be fixed, thereby reduced the whole height of ultra-thin transformer.

By above-mentioned execution mode, be not difficult to find out that the present invention is a kind of ultra-thin transformer with smaller integral height.

Abovely the present invention is described in detail in conjunction with execution mode; only be explanation technical conceive of the present invention and characteristics; its purpose is to allow the people that is familiar with this technology understand content of the present invention and is implemented; can not limit protection scope of the present invention with this; all equivalences that spirit is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.

Claims

1. ultra-thin transformer, it comprises housing (1), be arranged on the skeleton (2) in the described housing (1), be wrapped in primary coil (3) and secondary coil (4) on the described skeleton (2), a plurality ofly be connected with described primary coil (3) and secondary coil (4) respectively and have at least part to be exposed to the outside pin (5) of described housing (1), be arranged in the inner iron core (6) of described skeleton (2), described pin (5) has from outside first extension (51) that extends to horizontal direction of described housing (1) and from second extension (52) that the end of described first extension (51) extends straight down, it is characterized in that: described first extension (51) also comprises the kink (53) of bending upward.

2. ultra-thin transformer according to claim 1 is characterized in that: described primary coil (3) comprises a plurality of input coil groups that are arranged in order, and described secondary coil (4) comprises a plurality of output winding groups that are arranged in order.

3. ultra-thin transformer according to claim 2 is characterized in that: described skeleton (2) has an isolation part (21), and described primary coil (3) and described secondary coil (4) lay respectively at the both sides of described isolation part (21).

4. ultra-thin transformer according to claim 2, it is characterized in that: described skeleton (2) is made up of primary coil skeleton and secondary coil skeleton, described primary coil skeleton is sheathed on the outside of described iron core (6), described primary coil (3) is wound on the described primary coil skeleton, described secondary coil skeleton is sheathed on the outside of described primary coil (3), and described secondary coil (4) is wound on the described secondary coil skeleton.