CN210606929U

CN210606929U - High-frequency switch transformer framework

Info

Publication number: CN210606929U
Application number: CN201922227733.XU
Authority: CN
Inventors: 陈宣新; 卓宗辉
Original assignee: Yueqing Precision Electronic And Electrical Appliance Co ltd
Current assignee: Yueqing Precision Electronic And Electrical Appliance Co ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-05-22
Anticipated expiration: 2029-12-12

Abstract

The utility model relates to a transformer technical field, concretely relates to high frequency switch transformer skeleton based on EE47 type. The utility model discloses a first skeleton, second skeleton, be equipped with first square groove, mounting groove on the first skeleton, second skeleton matches spacing installation mutually with the mounting groove, first square groove is located mounting groove central point and puts, be equipped with second square groove on the second skeleton, be equipped with inside bellied location boss on the mounting groove inside, the second skeleton is equipped with the positioning groove of inside concave yield on the periphery outward, location boss and positioning groove mutually support the installation location, first square groove and second square groove mutually cooperate the installation with high frequency switch transformer's EE type magnetic core, install 8 first stitches on the first skeleton, 4 second stitches on the second skeleton installation, first stitch and second stitch are used for connecting high frequency switch transformer winding coil.

Description

High-frequency switch transformer framework

Technical Field

The utility model relates to a transformer technical field, concretely relates to high frequency switch transformer skeleton based on EE47 type.

Background

A Transformer (Transformer) is a device that changes an alternating voltage by using the principle of electromagnetic induction, and main components are a primary coil, a secondary coil, and a magnetic core. The common power frequency transformer has the working frequency of 50Hz-60Hz on the basis of the 220V frequency of alternating current of 50Hz-60Hz, but the power frequency transformer has low working frequency and low conversion efficiency, and a high-power frequency transformer needs a large magnetic core, so that the size is large, and the output current is unstable.

The switching transformer is generally a transformer used in a switching power supply, and works in a pulse state with a frequency of tens of to tens of thousands of Hz or even hundreds of thousands of Hz, and an iron core is generally made of ferrite materials. For the switching transformer, the higher the frequency, the smaller the magnetic core and the higher the conversion efficiency, and finally the volume of the switching transformer becomes smaller and thinner.

At present, the pressure and power of different parts in electronic equipment are different, the requirement on the volume is higher and higher, the miniaturization and the ultra-thinness are needed, the high-frequency switch transformer can not adapt to most of electronic equipment, the design is needed under more specific use working conditions, a primary coil, a secondary coil and a magnetic core on the high-frequency switch transformer are standard parts with different specifications and sizes, and the task of reducing the volume can only be completed by a framework on the high-frequency switch transformer.

SUMMERY OF THE UTILITY MODEL

In order to overcome the deficiency of the background art, the utility model provides a high frequency switch transformer skeleton.

The technical scheme of the utility model is that: the high-frequency switch transformer comprises a first framework and a second framework, wherein a first square groove and a mounting groove are arranged on the first framework, the second framework is matched with the mounting groove for limiting installation, the first square groove is positioned at the center of the mounting groove, a second square groove is arranged on the second framework, an inward convex positioning boss is arranged inside the mounting groove, inward concave positioning grooves are arranged on the periphery of the second framework, the positioning boss and the positioning grooves are matched with each other for installation and positioning, the first square groove and the second square groove are matched with an EE type magnetic core of the high-frequency switch transformer for installation, 8 first pins are arranged on the first framework, 4 second pins are arranged on the second framework, the first pins and the second pins are used for connecting a winding coil of the high-frequency switch transformer, and first wire grooves are arranged above the 8 first pins on the first framework, and a second wire guide groove is formed in the second framework above the 4 second pins.

Preferably, location boss and positioning groove all have 4, the location boss is square boss, positioning groove is the square groove of inside recessed.

Preferably, a first sleeve is installed on the 8 first pins, and a second sleeve is installed on the second pin.

Preferably, the first sleeve and the second sleeve are both made of polytetrafluoroethylene sleeves.

Preferably, the polytetrafluoroethylene sleeve is resistant to 200 ℃.

Preferably, the first stitch and the second stitch are both 90 ° stitches.

Preferably, the first pin and the second pin are both made of wires.

Preferably, the first pins and the second pins are made of tin-copper materials.

Preferably, the first framework and the second framework are made of phenolic resin, and both the first framework and the second framework can resist the temperature of 150 ℃.

Preferably, the specific model of the phenolic resin is PM-9820.

Preferably, the specific model of the phenolic resin is T375 HF.

Preferably, the top of the first framework is provided with a reinforcing rib, and the reinforcing rib is in a shape of a Chinese character 'zi' and two reinforcing ribs are opposite to each other.

Preferably, first skeleton bottom is equipped with 4 brace tables all around, 4 when making this product install on the circuit board by the brace table, let this product only have 4 brace tables and circuit board contact well, be convenient for set level, calorific capacity when also can reducing the first stitch of soldering and second stitch simultaneously.

The beneficial effects of the utility model are that this EE47 high frequency switch transformer's operating frequency can reach 500KHz, and output can reach 230W, and the volume only is 44mm 55.6mm, highly only is 15mm, has small, thin, intensity is high.

Drawings

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

Fig. 2-3 are schematic structural diagrams of the first frame of the present invention.

Fig. 4-5 are schematic structural views of the second frame of the present invention.

In fig. 1-5, a first frame 1, a first square groove 11, a mounting groove 12, a positioning boss 13, a reinforcing rib 14, a support table 15, a second frame 2, a second square groove 21, a positioning groove 22, a first pin 3, a second pin 4, a first sleeve 5, a second sleeve 6, a first wire groove 7, and a second wire groove 8.

Detailed Description

Embodiments of the invention are further described below with reference to the accompanying drawings:

as shown in fig. 1 to 5, this embodiment provides a high frequency switch transformer bobbin, which includes a first bobbin 1 and a second bobbin 2, the first bobbin 1 is provided with a first square groove 11 and a mounting groove 12, the second bobbin 2 and the mounting groove 12 are matched with each other for limiting installation, the first square groove 11 is located at the center of the mounting groove 12, the second bobbin 2 is provided with a second square groove 21, an inward protruding positioning boss 13 is provided inside the mounting groove 12, the second bobbin 2 is provided with an inward recessed positioning groove 22 on the outer periphery, the positioning boss 13 and the positioning groove 22 are matched with each other for installation and positioning, the first square groove 11 and the second square groove 21 are matched with an EE-type magnetic core of the high frequency switch transformer for installation, the first bobbin 1 is provided with 8 first pins 3, the second bobbin 2 is provided with 4 second pins 4, the first pin 3 and the second pin 4 are used for connecting a winding coil of a high-frequency switch transformer, the first framework 1 is provided with a first wire groove 7 above the 8 first pins 3, and the second framework 2 is provided with a second wire groove 8 above the 4 second pins.

Through the form of first skeleton 1 and the components of a whole that can function independently of second skeleton 2, can form fine isolated space with two E type magnetic cores, place winding enameled wire etc. inside, the volume can be done very little, and this EE47 high frequency switching transformer's operating frequency can reach 500KHz, and output can reach 230W, and the volume is 44mm 55.6mm, and the height is only 15 mm.

In order to prevent better that second skeleton 2 from rocking at the mounting groove 12 of first skeleton 1, preferably, location boss 13 and positioning groove 22 all have 4, location boss 13 is square boss, positioning groove 22 is the square groove of inwards recessing into.

In order to prevent accidents such as electric shock and electric leakage, it is preferable that the 8 first pins 3 are provided with the first sleeves 5, and the second pins 4 are provided with the second sleeves 6.

Preferably, the first sleeve 5 and the second sleeve 6 are made of polytetrafluoroethylene sleeves.

Preferably, the polytetrafluoroethylene sleeve is resistant to 200 ℃.

In order to facilitate the fixation with the circuit board, the first pin 3 and the second pin 4 are preferably both 90 ° pins. Of course, both the first pin 3 and the second pin 4 may be wires.

Because the circuit connection with the circuit board adopts the soldering to be cheaper and quick mode, preferably, first stitch 3 and second stitch 4 all adopt the tin copper material, and tin copper material is with low costs also be convenient for the soldering.

As is well known, the first frame 1 and the second frame 2 are made of insulating materials, and for mass production and cost, it is preferable that the first frame 1 and the second frame 2 are made of phenolic resin, and both the first frame 1 and the second frame 2 are resistant to 150 ℃. The phenolic resin is also called bakelite, has good insulating property, is suitable for automatic generation of automatic dies, and can directly utilize domestic mature production systems. The fire rating is 94V-0.

Through multiple tests and from the aspects of cost and quality, the specific type of the phenolic resin is preferably PM-9820, and the PM-9820 is a phenolic resin produced by Sumitomo bakelite Co.

Through multiple tests and consideration of cost and quality, the specific type of the phenolic resin is T375HF, and the T375HF is a phenolic resin produced by Changchun plastics Co. Of course, other types of phenolic resin can be used as the material, and even other plastics with insulating capability can be used, such as flame-retardant engineering materials ABS, PBT, ABS/PC, and the like.

Since the first frame 1 is generally made thinner in view of cost and volume, and the first frame 1 has a certain volume, in order to improve strength, it is preferable that a rib 14 is installed on the top of the first frame 1, and the rib 14 has a shape of a letter and two opposite to each other.

Preferably, 1 bottom of first skeleton is equipped with 4 brace tables 15 all around, 4 when propping up brace tables 15 and making this product install on the circuit board, let this product only have 4 brace tables 15 and circuit board contact well, be convenient for set level, calorific capacity when also can reducing soldering first stitch 3 and second stitch 4 simultaneously.

The present embodiment should not be considered as a limitation of the present invention, but any modification made based on the spirit of the present invention should be within the scope of the present invention.

Claims

1. The utility model provides a high frequency switch transformer skeleton, includes first skeleton (1), second skeleton (2), its characterized in that: the high-frequency switch transformer is characterized in that a first square groove (11) and a mounting groove (12) are arranged on the first framework (1), a second square groove (21) is arranged on the second framework (2) and is matched with the mounting groove (12) in a limiting mode for installation, the first square groove (11) is located in the center of the mounting groove (12), a second square groove (21) is arranged on the second framework (2), an inward convex positioning boss (13) is arranged inside the mounting groove (12), a positioning groove (22) which is concave inwards is formed in the outer periphery of the second framework (2), the positioning boss (13) and the positioning groove (22) are matched with each other for installation and positioning, the first square groove (11) and the second square groove (21) are matched with an EE type magnetic core of the high-frequency switch transformer for installation, 8 first pins (3) are installed on the first framework (1), and 4 second pins (4) are installed on the second framework (2), first stitch (3) and second stitch (4) are used for connecting high frequency switch transformer winding coil, first skeleton (1) is equipped with first wire casing (7) in 8 first stitch (3) tops departments, second skeleton (2) are equipped with second wire casing (8) in 4 second stitch (4) tops departments.

2. The high-frequency switch transformer bobbin of claim 1, wherein: install first sleeve pipe (5) on 8 first stitches (3), install second sleeve pipe (6) on second stitch (4).

3. The high-frequency switching transformer bobbin of claim 2, wherein: the first sleeve (5) and the second sleeve (6) are made of polytetrafluoroethylene sleeves.

4. The high-frequency switch transformer bobbin of claim 3, wherein: the polytetrafluoroethylene sleeve can resist the temperature of 200 ℃.

5. The high-frequency switch transformer bobbin of claim 1, wherein: the first stitch (3) and the second stitch (4) are both 90-degree stitches.

6. The high-frequency switch transformer bobbin of claim 1, wherein: the first pin (3) and the second pin (4) both adopt conducting wires.

7. A high frequency switching transformer bobbin as claimed in claim 5 or 6, wherein: the first pins (3) and the second pins (4) are made of tin-copper materials.

8. The high-frequency switch transformer bobbin of claim 1, wherein: first skeleton (1) and second skeleton (2) adopt the phenolic resin preparation, first skeleton (1) and second skeleton (2) are all able to bear the temperature 150 ℃.

9. The high frequency switching transformer bobbin of claim 8, wherein: the specific model of the phenolic resin is PM-9820.

10. The high frequency switching transformer bobbin of claim 8, wherein: the specific model of the phenolic resin is T375 HF.