CN201163566Y

CN201163566Y - Combination switch transformer

Info

Publication number: CN201163566Y
Application number: CNU2008200624787U
Authority: CN
Inventors: 刘永言
Original assignee: CHENGDU HOPE ELECTRONIC INSTITUTE Co Ltd
Current assignee: CHENGDU HOPE ELECTRONIC INSTITUTE Co Ltd
Priority date: 2008-03-13
Filing date: 2008-03-13
Publication date: 2008-12-10
Anticipated expiration: 2018-03-13

Abstract

The utility model discloses a switching transformer in an electronic circuit, consisting of a magnetic core, a main skeleton, a flaky skeleton, a primary coil, a secondary coil and a fixing strip, wherein the flaky skeleton consists of a secondary coil drum, a mounting strip and a wiring pin; the main skeleton consists of a primary coil drum, a front mounting plate, a front wiring pin, a back mounting plate and a back wiring pin; a square hole of the secondary coil is larger than the outer contour of the front mounting plate of the primary coil drum; the primary coil is wound inside the primary coil drum of the main skeleton; the secondary coil is wound inside the secondary coil drum of the flaky skeleton; the flaky skeleton passes through the front mounting plate of the main skeleton and orderly covers the periphery of the primary coil drum of the main skeleton; the primary coil drum of the main skeleton is sleeved with the magnetic core; the fixing strip is arranged around the outside of the magnetic core to firmly fix the magnetic core. As the primary coil and the secondary coil are wound on different skeletons, the insulation performance between the coils is good, and the insulation reliability is improved, so as to simplify winding process and raise efficiency.

Description

The packet type switch transformer

Affiliated technical field

The utility model relates to a kind of electronic transformer, especially the switch transformer in the electronic circuit.

Background technology

General electronic switch transformer device structure, primary coil all is parallel close around forming on same coil rack with secondary side coil.Primary coil is around the internal layer near skeleton, secondary side coil above primary coil, between them with the insulation film (see figure 1) of being separated by.The insulating thin layer of this structure and edge insulation thereof are unreliable, make the insulation of primary coil and secondary side coil unreliable, cause primary coil and secondary side coil contact short circuit easily, particularly under the voltage condition with higher, easier of the insulating thin layer puncture, cause fault.

Summary of the invention

In order to improve the reliability that insulate between primary coil and the secondary side coil, the utility model has designed a kind of packet type switch transformer device structure, and this packet type switch transformer is made up of magnetic core, main framing, sheet skeleton, primary coil, secondary side coil and fixed strip.The sheet skeleton is formed by paying sideline tube, mounting bar and leg; Paying that the sideline tube has with the axis is the square hole at center, and the middle upper part of mounting bar is fixed on an end bottom of paying sideline tube axis direction, and leg is fixed on the below of mounting bar.Main framing is made up of former sideline tube, front mounting plate, preceding leg, back mounting panel and back leg; It is the square hole at center that former sideline tube has with the axis, the top of the top of front mounting plate and back mounting panel is separately fixed at the bottom, two ends of former sideline tube axis direction, and be lower than the bottom of former sideline tube square hole, preceding leg is fixed on the below of front mounting plate, and back leg is fixed on the below of back mounting panel.The width of front mounting plate is identical with the width of former sideline tube outline, and less than the width of paying sideline tube square hole in the sheet skeleton; The width of back mounting panel is greater than the outline width of former sideline tube front mounting plate end, and greater than the width of paying sideline tube square hole in the sheet skeleton; Pay the outline of the square hole of sideline tube greater than former sideline tube front mounting plate end; Primary coil is in the former sideline tube of main framing, and on leg and the back leg, secondary side coil was paid in the tube of sideline around the sheet skeleton before its end of a thread exit was connected on, and its end of a thread exit is connected on the leg.The front mounting plate that the sheet skeleton passes main framing is nested in the tube periphery, former sideline of main framing successively, and magnetic core is sleeved in the former sideline tube of main framing, and fixed strip is sleeved on the outside of magnetic core magnetic core is reinforced.

Because primary coil is wound on the different skeletons with secondary side coil, therefore, the insulating reliability of switch transformer improves greatly, needn't worry Insulation Problems during coiling, thereby has simplified technique for coiling, has improved efficient.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is primary coil, the secondary side coil position schematic cross section of conventional switch transformer.

Fig. 2 is primary coil of the present utility model, secondary side coil position schematic cross section.

Fig. 3 is the utility model schematic perspective view.

Fig. 4 is the utility model main framing schematic perspective view (comprising the primary coil schematic diagram).

Fig. 5 is the utility model sheet skeleton stack schematic perspective view (comprising secondary side coil signal circle).

Among the figure, 1, magnetic core, 2, main framing, 3, sheet skeleton, 4, fixed strip, 5, primary coil, 6, secondary side coil, 7, former sideline tube, 8, front mounting plate, 9, preceding leg, 10, the back mounting panel, 11, the back leg, 12, pay the sideline tube, 13, mounting bar, 14, leg, 15, coil rack.

Embodiment

As Fig. 2, Fig. 3, shown in Figure 4, the utility model is made up of magnetic core 1, main framing 2, sheet skeleton 3, fixed strip 4, primary coil 5 and secondary side coil 6.Sheet skeleton 3 is formed by paying sideline tube 12, mounting bar 13 and leg 14; Paying that sideline tube 12 has with the axis is the square hole at center, and the middle upper part of mounting bar 13 is fixed on an end bottom of paying sideline tube 12 axis directions, and leg 14 is fixed on the below of mounting bar 13.Main framing 2 is made up of former sideline tube 7, front mounting plate 8, preceding leg 9, back mounting panel 10 and back leg 11; It is the square hole at center that former sideline tube 7 has with the axis, the top of the top of front mounting plate 8 and back mounting panel 10 is separately fixed at the bottom, two ends of former sideline tube 7 axis directions, and be lower than the bottom of former sideline tube 7 square holes, preceding leg 9 is fixed on the below of front mounting plate 8, and back leg 11 is fixed on the below of back mounting panel 10.The width of front mounting plate 8 is identical with the width of former sideline tube 7 outlines, and less than the width of paying tube 12 square holes in sideline in the sheet skeleton 3; The width of back mounting panel 10 is greater than the outline width of former sideline tube 7 front mounting plates 8 ends, and greater than the width of paying tube 12 square holes in sideline in the sheet skeleton 3; Pay the outline of the square hole of sideline tube 12 greater than former sideline tube 7 front mounting plates 8 ends; Primary coil 5 is in the former sideline tube 7 of main framing 2, and on leg 9 and the back leg 11, secondary side coil 6 was paid in the sideline tube 12 around sheet skeleton 3 before its end of a thread exit was connected on, and its end of a thread exit is connected on the leg 14.The front mounting plate 8 that sheet skeleton 3 passes main framing 2 is nested in tube 7 peripheries, former sideline of main framing 2 successively, and magnetic core 1 is sleeved in the former sideline tube 7 of main framing 2, and fixed strip 4 is sleeved on the outside of magnetic core 1 magnetic core 1 is reinforced.

For the fixed strip 4 of switchette transformer, magnetic core 1 is reinforced in the outside that can use the adhesive sticker insulating tape to be wrapped in magnetic core 1.For the fixed strip 4 of relatively large switch transformer, magnetic core 1 is reinforced in the outside that can use bonding jumper to be sleeved on magnetic core 1.

One group of sheet skeleton 3 is nested in leg 14 positions on the main framing 2, odevity by these sheet skeletons 3 is alternately distributed, the leg 14 of odd number sheet skeleton 3 is at same end, and the leg 14 of even number sheet skeleton 3 is from adjacent odd number sheet skeleton 3 leg 14 other end far away.(as shown in Figure 5)

Can only secondary side coil 6 of coiling in each sheet skeleton 3.(as shown in Figure 5)

The utility model technique for coiling is simple, only needs each secondary side coil 6 on different sheet skeletons 3, and primary coil 5 is independent on the former sideline tube 7 of main framing 2, sheet skeleton 3 is stacked on the main framing 2 to form then.Pad dielectric layer by hand when coiling, it is few to make spended time, and quality guarantees that easily each intercoil insulation performance is good, considerably beyond the dielectric strength of traditional structure form.

Claims

1, a kind of packet type switch transformer, it is made up of magnetic core, main framing, primary coil, secondary side coil and fixed strip at least; It is characterized in that: it also has the sheet skeleton; The sheet skeleton is formed by paying sideline tube, mounting bar and leg; Paying that the sideline tube has with the axis is the square hole at center, and the middle upper part of mounting bar is fixed on an end bottom of paying sideline tube axis direction, and leg is fixed on the below of mounting bar; Described main framing is made up of former sideline tube, front mounting plate, preceding leg, back mounting panel and back leg; It is the square hole at center that former sideline tube has with the axis, the top of the top of front mounting plate and back mounting panel is separately fixed at the bottom, two ends of former sideline tube axis direction, and be lower than the bottom of former sideline tube square hole, preceding leg is fixed on the below of front mounting plate, and back leg is fixed on the below of back mounting panel; The width of front mounting plate is identical with the width of former sideline tube outline, and less than the width of paying sideline tube square hole in the sheet skeleton; The width of back mounting panel is greater than the outline width of former sideline tube front mounting plate end, and greater than the width of paying sideline tube square hole in the sheet skeleton; The square hole of described pair of sideline tube is greater than the outline of former sideline tube front mounting plate end; Primary coil is in the former sideline tube of main framing, and on leg and the back leg, secondary side coil was paid in the tube of sideline around the sheet skeleton before its end of a thread exit was connected on, and its end of a thread exit is connected on the leg; The front mounting plate that the sheet skeleton passes main framing is nested in the tube periphery, former sideline of main framing successively, and magnetic core is sleeved in the former sideline tube of main framing, and fixed strip is sleeved on the outside of magnetic core magnetic core is reinforced.

2, packet type switch transformer according to claim 1, it is characterized in that: described sheet skeleton is nested in the leg position on the main framing, odevity by the sheet skeleton is alternately distributed, the leg of odd number sheet skeleton is at same end, and the leg of even number sheet skeleton is from the adjacent odd number sheet skeleton leg other end far away.

3, packet type switch transformer according to claim 1 is characterized in that: can only secondary side coil of coiling in described each sheet skeleton.