CN219246506U

CN219246506U - Wide-temperature low-power-consumption Mn-Zn ferrite core transformer

Info

Publication number: CN219246506U
Application number: CN202223604297.1U
Authority: CN
Inventors: 冯利荣
Original assignee: Haining Lingtong Magnetic Technology Co ltd
Current assignee: Haining Lingtong Magnetic Technology Co ltd
Priority date: 2022-12-31
Filing date: 2022-12-31
Publication date: 2023-06-23
Anticipated expiration: 2032-12-31

Abstract

The utility model provides a wide-temperature low-power-consumption Mn-Zn ferrite core transformer which comprises a transformer framework, a pair of magnetic core bodies and windings, wherein the transformer framework comprises a winding frame, a side plate and a side post, the middle part of the winding frame is provided with a through hole, the winding is used for winding the windings, the side plate is arranged at the end part of the winding frame, the side wall of the side plate is provided with a side heat dissipation hole, and the magnetic core bodies comprise core bases, middle posts and side posts, the middle posts are arranged at the middle part of the core bases and are in plug-in fit with the through holes, and the side posts are arranged at the side parts of the core bases. The core body and the winding in the wide-temperature low-power-consumption Mn-Zn ferrite core transformer have larger contact area with air, and are also provided with coil radiating holes and side radiating holes, thereby being beneficial to improving the radiating performance of the wide-temperature low-power-consumption Mn-Zn ferrite core transformer.

Description

Wide-temperature low-power-consumption Mn-Zn ferrite core transformer

Technical Field

The utility model relates to the technical field of magnetic core transformers, in particular to a wide-temperature low-power-consumption manganese-zinc ferrite magnetic core transformer.

Background

In recent years, ferrite materials have been used in the manufacture of various inductors, transformers, filters and choke coils, and also in the fields of motors and their peripherals, office automation equipment, digital and analog communication equipment, the internet, home appliances, electromagnetic compatibility equipment, green lighting devices, industrial automation and other modern electronic information, automobiles, aviation and the like, which have higher and more specific requirements for the characteristics of ferrite materials.

Ferrite material is a non-metallic magnetic material which is formulated and sintered from ferric oxide and one or more other metal oxides (e.g., nickel oxide, zinc oxide, manganese oxide, magnesium oxide, barium oxide, strontium oxide, etc.). Ferrites are composite oxides of iron and one or more other suitable metallic elements, of a nature of semiconductor, commonly used as magnetic media, the most important distinction between ferrite magnetic materials and metal or alloy magnetic materials being electrical conductivity, ferrite magnetic materials having a relatively low resistivity. Its relative permeability can be up to several thousand, resistivity can be up to thousands times of metal, and it has the advantage of small eddy current loss, so that it is suitable for making high-frequency electromagnetic device. Ferrite is mainly classified into five types of hard magnetic, soft magnetic, rectangular magnetic, gyromagnetic and piezomagnetic, wherein the soft magnetic ferrite material mainly comprises three major types of manganese zinc system, nickel zinc system and magnesium zinc system, and if the ferrite is classified according to application characteristic parameters, the ferrite material can be classified into a power ferrite material, a high-frequency ferrite material, a high-resistivity material, a composite characteristic material and the like. Along with the rapid development of technology, the demand of people for high-quality magnetic materials with excellent performance is more and more urgent, and the adjustment of the proportion of the chemical components of ferrite, including doping elements, adjusting the size and geometry of material crystals, modifying the surface of the material, or optimizing the preparation process, is a way for improving the performance of ferrite by researchers.

The Mn-Zn ferrite belongs to one kind of soft magnetic ferrite and is spinel structure, and is made of iron, mn and Zn oxide and salt additive through ceramic process.

The current chinese patent with publication number CN102360854B discloses a U-shaped core transformer, which comprises a metal shell, a pair of U-shaped cores, a strip-shaped core, an insulating support and windings, wherein the pair of U-shaped cores are installed in the metal shell, the strip-shaped core is located in the middle of the U-shaped core, the insulating support is located at two sides of the strip-shaped core, and the windings are wound on the insulating support.

The prior art solutions described above have the following drawbacks: the U-shaped magnetic core transformer is characterized in that the U-shaped magnetic core is arranged in the metal shell, the direct contact area of the U-shaped magnetic core and air is small, and the heat dissipation performance of the U-shaped magnetic core transformer is poor.

Disclosure of Invention

The utility model aims to solve the problems of the prior art and provides a wide-temperature low-power-consumption Mn-Zn ferrite core transformer, which solves the problem of poor heat dissipation performance in the prior art.

The above object of the present utility model is achieved by the following technical solutions: the utility model provides a wide temperature low-power consumption manganese zinc ferrite core transformer, includes transformer skeleton, a pair of magnetic core body, winding, the transformer skeleton is including the middle part have the through-hole and supply the winding to twine the bobbin, set up in the curb plate of bobbin tip, set up the side louvre on the lateral wall of curb plate, the magnetic core body includes the core seat, sets up in the core seat middle part and with through-hole grafting complex center pillar, set up in the side pillar of core seat lateral part.

The utility model is further provided with: and a flange for limiting the winding range of the winding is arranged on the outer side wall of the winding frame.

The utility model is further provided with: and coil heat dissipation holes are formed in the side wall of the flange.

The utility model is further provided with: each side plate is provided with a transverse reinforcing rib and a vertical reinforcing rib on the side wall deviating from the winding frame.

The utility model is further provided with: the utility model discloses a spool, including spool, core fixing mechanism, a plurality of locating holes have been seted up on the lateral wall of center pillar, all set gradually recess, the perforation that all aligns with the locating hole on the lateral wall of spool, be provided with the core fixing mechanism on the spool, the core fixing mechanism is including setting up in perforation top and the casing that the mounting groove was seted up to the bottom surface, slip set up in the mounting groove and with locating hole grafting complex spool.

The utility model is further provided with: the top surface of the shell is provided with an outlet hole communicated with the mounting groove, the end face of the sliding column facing the outlet hole is provided with a connecting rod penetrating through the outlet hole, and one end of the connecting rod, deviating from the sliding column, is provided with a lifting head.

The utility model is further provided with: and a pushing column spring sleeved on the connecting rod is arranged between the sliding column and the bottom wall of the mounting groove.

The utility model is further provided with: the bottom of the outer side wall of the shell is provided with a connecting flanging which is in scarf joint with the groove, and the bottom surface of the connecting flanging is glued with the bottom of the groove.

In summary, the beneficial technical effects of the utility model are as follows: the core body and the winding in the wide-temperature low-power-consumption Mn-Zn ferrite core transformer have larger contact area with air, and are also provided with coil radiating holes and side radiating holes, thereby being beneficial to improving the radiating performance of the wide-temperature low-power-consumption Mn-Zn ferrite core transformer.

Drawings

FIG. 1 is a schematic diagram of a wide temperature range low power Mn-Zn ferrite core transformer of the present utility model;

FIG. 2 is a schematic diagram of a transformer skeleton according to the present utility model;

FIG. 3 is a schematic diagram of a wide temperature low power manganese zinc ferrite core transformer in accordance with the present utility model in semi-section;

fig. 4 is an enlarged view at a in fig. 3;

FIG. 5 is a schematic view of the magnetic core of the present utility model;

in the above figures: 1. a transformer skeleton; 2. a bobbin; 3. a through hole; 4. a groove; 5. perforating; 6. a flange; 7. coil heat dissipation holes; 8. a side plate; 9. a side heat radiation hole; 10. transverse reinforcing ribs; 11. vertical reinforcing ribs; 12. a housing; 13. connecting and flanging; 14. a mounting groove; 15. a hole is formed; 16. a spool; 17. a connecting rod; 18. a pull head; 19. a push column spring; 20. a magnetic core body; 201. a core seat; 202. a center column; 203. a side column; 21. positioning holes; 22. and (3) winding.

Detailed Description

The utility model will be further described with reference to the drawings and detailed description in order to make the technical means, the creation characteristics, the achievement of the objects and the functions of the utility model more clear and easy to understand.

As shown in fig. 1, the utility model provides a wide-temperature low-power-consumption manganese-zinc ferrite core transformer, which comprises a transformer framework 1, a pair of core bodies 20 and windings 22.

The transformer framework 1 is used for winding coils of the winding 22 and fixing the magnetic core body 20 in the transformer, and metal pins of the transformer framework 1 are connected with the PCB after soldering tin, so that the transformer plays a role in conducting electricity when in operation.

As shown in fig. 1 and 2, the transformer frame 1 includes a bobbin 2 and side plates 8. The middle part of the winding frame 2 is provided with a through hole 3, the through hole 3 is a rectangular hole, the cross section of the winding frame 2 is in a rectangular ring shape, and the winding frame 2 is used for winding the winding 22. As shown in fig. 3 and 4, two grooves 4 are symmetrically formed on the upper and lower side walls of the winding frame 2, the grooves 4 are circular grooves, through holes 5 are formed on the bottom of each groove 4, and the through holes 5 are circular holes. A pair of flanges 6 are integrally connected to the outer side wall of the winding frame 2, the cross section of each flange 6 is in a rectangular shape, each flange 6 is located on the inner side of each groove 4, each flange 6 is used for limiting the winding range of the corresponding winding 22, a plurality of coil radiating holes 7 are formed in the side wall of each flange 6, each coil radiating hole 7 is a circular hole, each coil radiating hole 7 is used for improving the contact area between the corresponding winding 22 and air, and the heat dissipation performance of the wide-temperature low-power manganese zinc ferrite core transformer is improved.

As shown in fig. 1 and 2, the number of the side plates 8 is two, and the two side plates 8 are integrally connected to both ends of the bobbin 2, respectively. The side radiating holes 9 are formed in the lower portion of the outer side wall of each side plate 8, the side radiating holes 9 are rectangular holes, when the wide-temperature low-power-consumption manganese-zinc ferrite core transformer is mounted on a PCB, the bottom of the winding 22 is relatively close to the PCB, and effective heat dissipation is difficult to be carried out on the lower portion of the winding 22 only through gaps between the winding 22 and the PCB, so that the side radiating holes 9 are formed in the side plates 8, and the heat dissipation performance of the wide-temperature low-power-consumption manganese-zinc ferrite core transformer can be effectively improved.

As shown in fig. 1 and 2, the side wall of each side plate 8 deviating from the winding frame 2 is uniformly connected with transverse reinforcing ribs 10 and vertical reinforcing ribs 11, the transverse reinforcing ribs 10 are horizontally arranged, the number of the transverse reinforcing ribs 10 is two, and the two transverse reinforcing ribs 10 respectively abut against the upper end and the lower end of the magnetic core body 20, so that the two transverse reinforcing ribs 10 can play a role in positioning the magnetic core body 20, the vertical reinforcing ribs 11 are vertically arranged, and the transverse reinforcing ribs 10 and the vertical reinforcing ribs 11 are used for improving the structural strength of the side plates 8.

As shown in fig. 2 and 5, the magnetic core 20 is shaped like an "E", a pair of magnetic core 20 are spliced to form an "8", and the magnetic core 20 includes a core holder 201, a center pillar 202, and side pillars 203. The middle columns 202 are integrally connected to the middle of the core holder 201, the middle columns 202 are rectangular columns, the middle columns 202 are in plug-in fit with the through holes 3, positioning holes 21 are formed in the upper side wall and the lower side wall of each middle column 202, the positioning holes 21 are circular holes, and when the middle columns 202 are completely inserted into the through holes 3, the positioning holes 21 are aligned with the through holes 5.

As shown in fig. 3 and 4, four groups of core fixing mechanisms are arranged on the winding frame 2, each core fixing mechanism comprises a cylindrical shell 12, a connecting flange 13 which is in jogged fit with the groove 4 is integrally connected to the bottom of the outer side wall of the shell 12, the cross section of the connecting flange 13 is in a circular ring shape, and the bottom surface of the connecting flange 13 is glued with the bottom of the groove 4. The bottom surface of the shell 12 is provided with a mounting groove 14, the mounting groove 14 is aligned with the groove 4 and the through hole 5, the mounting groove 14 is a circular groove, the center of the top surface of the shell 12 is provided with a hole 15 with a circular cross section, and the hole 15 is communicated with the mounting groove 14. The installation groove 14 is provided with the slide column 16 in a sliding manner, the slide column 16 is cylindrical, a cylindrical connecting rod 17 is fixedly connected to the end face of the slide column 16 facing the outlet hole 15, the connecting rod 17 penetrates through the outlet hole 15 and is in sliding fit with the outlet hole 15, one end of the connecting rod 17, which is away from the slide column 16, is fixedly connected with a lifting head 18, and the lifting head 18 is used for lifting the connecting rod 17 and the slide column 16 to provide a force application point for workers. The sliding column 16 and the bottom wall of the mounting groove 14 are provided with a pushing column spring 19, the pushing column spring 19 is sleeved on the connecting rod 17, and the pushing column spring 19 is used for pushing the sliding column 16 to pass through the through hole 5 and be inserted into the positioning hole 21.

The magnetic core body 20 and the winding 22 in the wide-temperature low-power-consumption Mn-Zn ferrite core transformer have larger contact areas with air, and the coil radiating holes 7 and the side radiating holes 9 are also formed, so that the heat radiation performance of the wide-temperature low-power-consumption Mn-Zn ferrite core transformer is improved.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.

Claims

1. The utility model provides a wide temperature low-power consumption manganese zinc ferrite core transformer, includes transformer skeleton (1), a pair of magnetic core body (20), winding (22), its characterized in that: the transformer skeleton (1) is including middle part have through-hole (3) and supply winding (22) to twine bobbin (2), set up in curb plate (8) of bobbin (2) tip, set up side louvre (9) on the lateral wall of curb plate (8), magnetic core body (20) include core print (201), set up in core print (201) middle part and with through-hole (3) grafting complex center pillar (202), set up in side pillar (203) of core print (201) lateral part.

2. The wide temperature range low power consumption manganese-zinc ferrite core transformer of claim 1, wherein: the outer side wall of the winding frame (2) is provided with a flange (6) for limiting the winding range of the winding (22).

3. The wide temperature range low power consumption manganese-zinc ferrite core transformer of claim 2, wherein: the side wall of the flange (6) is provided with a coil heat dissipation hole (7).

4. The wide temperature range low power consumption manganese-zinc ferrite core transformer of claim 1, wherein: each side plate (8) is provided with a transverse reinforcing rib (10) and a vertical reinforcing rib (11) on the side wall deviating from the winding frame (2).

5. The wide temperature range low power consumption manganese-zinc ferrite core transformer of claim 1, wherein: a plurality of locating holes (21) have been seted up on the lateral wall of center pillar (202), recess (4), perforation (5) that all align with locating hole (21) have been seted up in proper order on the lateral wall of bobbin (2), be provided with centering mechanism on bobbin (2), centering mechanism is including setting up casing (12) that mounting groove (14) were seted up in perforation (5) top and bottom surface, slip setting in mounting groove (14) and with locating hole (21) grafting complex strut (16).

6. The wide temperature range low power consumption Mn-Zn ferrite core transformer according to claim 5, wherein: the top surface of the shell (12) is provided with an outlet hole (15) communicated with the mounting groove (14), the end surface of the sliding column (16) facing the outlet hole (15) is provided with a connecting rod (17) penetrating through the outlet hole (15), and one end of the connecting rod (17) deviating from the sliding column (16) is provided with a lifting head (18).

7. The wide temperature range low power consumption manganese-zinc ferrite core transformer according to claim 6, wherein: a pushing post spring (19) sleeved on the connecting rod (17) is arranged between the sliding post (16) and the bottom wall of the mounting groove (14).

8. The wide temperature range low power consumption Mn-Zn ferrite core transformer according to claim 5, wherein: the bottom of the outer side wall of the shell (12) is provided with a connecting flange (13) which is in scarf joint with the groove (4), and the bottom surface of the connecting flange (13) is glued with the bottom of the groove (4).