Unlock instant, AI-driven research and patent intelligence for your innovation.

Transformer

A transformer and magnetic core technology, applied in the field of low-height transformers, can solve the problems of low volume occupancy of transformers and low wattage, and achieve the effects of increasing volume occupancy, reducing space, and increasing allowable wattage

Active Publication Date: 2013-12-25
TOKYO PARTS IND CO LTD
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the transformer of Patent Document 1, when the U-shaped core is assembled with the I-shaped core inserted into the bobbin, there is a space above the opposite terminal of the U-shaped core where no magnetic core is formed, so the magnetic core occupies The volume occupancy rate of the entire transformer (including the vertical × horizontal × height of the pin terminal and the coil frame) becomes lower, even if the overall volume of the transformer is large, the allowable wattage is not large

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Transformer
  • Transformer
  • Transformer

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach example

[0024] figure 1 It is an exploded perspective view of the transformer 1 according to the first embodiment of the present invention. figure 2 yes figure 1 Completed perspective view of Transformer 1. image 3 yes figure 1 The magnetic composition diagram of the transformer 1.

[0025] exist Figure 1 to Figure 3 Among them, a transformer 1 for a DC-DC converter includes: a coil bobbin 10 around which a coil 2 is wound; an I-shaped magnetic core 50 inserted into the coil bobbin 10; The sun-shaped magnetic core 60 installed above.

[0026] The I-shaped magnetic core 50 includes both end portions 52 and a central portion 51 between the two end portions 52 , and has substantially the same quadrangular cross-sectional area perpendicular to the longitudinal direction. The length in the longitudinal direction of the I-shaped magnetic core 50 is substantially the same as the length in the longitudinal direction of the Japanese-shaped magnetic core 60 .

[0027] The Japanese-sha...

no. 2 approach example

[0052] Figure 5 It is a magnetic configuration diagram of the transformer 1 according to the second embodiment of the present invention.

[0053] in with image 3 Components that are the same as in the first embodiment are denoted by the same symbols and redundant descriptions are omitted.

[0054] In this embodiment, the difference from the first embodiment is that in order to magnetically couple with the I-shaped magnetic core 50, the winding section is divided into 6 closed magnetic circuits (3 groups of primary winding and secondary winding) closed magnetic circuit), two central parts 161 extending parallel to the short part 162 are added to the long part 163 of the deformed Japanese-shaped magnetic core 160, and the primary winding 16 and the secondary winding are respectively wound in each winding section. In the group of secondary windings 17, the direction of the magnetic flux of any one closed magnetic circuit is formed to be opposite to the direction of the magnet...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention aims to increase the volume occupancy of a magnetic core to a whole transformer in a low-height transformer. If a I-shaped magnetic core (50) is inserted into a hollow part (11) of a coil frame (10) winding a coil (2), the middle part (51) of the I-shaped magnetic core (50) is exposed out of a space part (19) where one part of the coil frame (10) is cut, a closed E-shaped magnetic core (60) combined with the I-shaped magnetic core (50) is assembled above the vertical direction of the coil frame (10), a short-type part (62) of the closed E-shaped magnetic core (60) is abutted against an upper surface of two end parts (52) of the I-shaped magnetic core (50) protruded from a flange part (12) of the coil frame (10) for magnetic coupling, a middle part (61) of the closed E-shapedmagnetic core (60) is inserted into the space part (19) of the coil frame (10) and abutted against the upper surface of the middle part (51) of the I-shaped magnetic core (50).

Description

technical field [0001] The present invention relates to transformers of the low profile type mainly used in DC-DC converters. Background technique [0002] Conventionally, as a transformer used in electronic equipment, for example, the following transformer is disclosed in Patent Document 1, which includes: a bobbin in which a bobbin and a terminal holding portion are integrated at both ends of a hollow coil body; The primary winding and secondary winding in the main body of the coil; the I-shaped magnetic core inserted into the hollow hole of the main body of the coil; core. [0003] Patent Document 1: Japanese Unexamined Patent Publication No. 2008-98350. [0004] However, in the transformer of Patent Document 1, when the U-shaped core is assembled with the I-shaped core inserted into the bobbin, there is a space above the opposite terminal of the U-shaped core where no magnetic core is formed, so the magnetic core occupies The volume occupancy rate of the entire transf...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/30H01F27/24H01F41/02
Inventor 朝仓一彰
Owner TOKYO PARTS IND CO LTD