CN218849245U

CN218849245U - Ultra-thin transformer

Info

Publication number: CN218849245U
Application number: CN202223337926.9U
Authority: CN
Inventors: 江静文
Original assignee: Xiamen Weisheng Industrial Co ltd
Current assignee: Xiamen Weisheng Industrial Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-04-11
Anticipated expiration: 2032-12-12

Abstract

The utility model provides an ultra-thin transformer, including skeleton, magnetic core group, the skeleton includes the coil former of level setting, set up the through-hole that runs through on the coil former, the coil former left and right sides both ends are equipped with first curb plate and second curb plate respectively, the lower part of first curb plate and second curb plate respectively is equipped with a base, terminal surface is seted up horizontal line passageway under the base, the base outside is equipped with the pin hole, the cross section of coil former is oval-shaped and the through-hole also adopts the elliptical aperture; the center post of magnetic core group gets into the through-hole from the through-hole both ends inside and there is certain air gap between the two, the utility model discloses a cooperate through oval-shaped coil former and oval-shaped center post, reduced the high space of transformer, changed the position in pin hole again, make the pin extend out from the transformer side, further compressed the shared height of transformer, the utility model has the advantages of simple structure, very big reduction occupation space again, the production of being convenient for simultaneously.

Description

Ultra-thin transformer

Technical Field

The utility model relates to a technical field of transformer, especially an ultra-thin type transformer.

Background

The transformer is used as a component commonly used for a power module, if the size is large, the transformer can be welded on a circuit board to be protruded, the whole thickness of the circuit board is increased, along with the development trend of portability and miniaturization of the existing product, a winding framework of the transformer is smaller and smaller, and therefore the problem that the whole thickness of the transformer needs to be reduced urgently is solved.

In view of the above, the present inventors have specially designed an ultra-thin transformer, and have resulted from this.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the technical scheme of the utility model as follows:

an ultrathin transformer comprises a framework and a magnetic core group matched with the framework, wherein the framework comprises a coil rack which is horizontally arranged, a through hole which penetrates through the coil rack is formed in the coil rack, a first side plate and a second side plate which are perpendicular to a central shaft of the coil rack extend outwards from the left end and the right end of the coil rack respectively, a base is arranged on each of the lower portions of the first side plate and the second side plate, a horizontal wire passing channel is formed in the lower end face of each base, pin holes are formed in the outer side of each base, the cross section, perpendicular to the central shaft, of the coil rack is oval, the through hole is an oval hole, and the first side plate and the second side plate are oval; the magnetic core group is including being the first magnetic core and the second magnetic core of "E" type, be equipped with the first outer side post of transversal oval-shaped first center post and two symmetry settings in first center post both sides on the first magnetic core, be equipped with the transversal oval-shaped second center post of personally submitting and two symmetry settings in the second outer side post of second center post both sides on the second magnetic core, first outer side post and the mutual butt of second outer side post just are located the coil former outside, first center post and second center post and through-hole gomphosis or grafting cooperation, there is the air gap in first center post and second center post are located the through-hole and between the two.

Further, the first central column and the two first outer columns are equal in length; the second central column is shorter than the length of the second outer column.

Furthermore, one side of the first outer side column, which is close to the first central column, is in a concave arc shape; one side of the second outer side column, which is close to the second center column, is in a concave arc shape.

Further, a coil is wound outside the coil former and between the first side plate and the second side plate.

Further, a first insulating adhesive tape is wound on the outer side of the coil.

Furthermore, the first magnetic core and the second magnetic core surround to form a square frame, and a second insulating adhesive tape is wound on the outer ring of the square frame.

Furthermore, the pin hole is provided with a pin, the pin comprises a first horizontal extension portion, a first bending portion, a second horizontal extension portion and a second bending portion, the first horizontal extension portion, the second bending portion and the second bending portion are sequentially arranged, and the first horizontal extension portion is arranged in the pin hole.

Furthermore, the upper parts of the first side plate and the second side plate are respectively provided with a limiting strip.

The utility model discloses a cooperate through oval-shaped coil former and oval-shaped magnet center post for the high reduction of transformer, simultaneously, changed the position in pin hole, make its pin extend out from transformer skeleton's side, further, compressed the shared height of transformer in the use, the utility model has the advantages of simple structure, very big reduction occupation space again, the production of being convenient for simultaneously.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention.

Wherein:

FIG. 1 is a schematic view of the framework of the present invention;

FIG. 2 is a schematic structural view of the framework of the present invention;

FIG. 3 is a front view of the frame of the present invention;

fig. 4 is a right side view of the frame of the present invention;

fig. 5 is a bottom view of the frame of the present invention;

fig. 6 is a schematic structural diagram of a magnetic core set in the present invention;

fig. 7 is a top view of the magnetic core assembly of the present invention;

fig. 8 is a schematic structural diagram of the first magnetic core in the present invention.

Description of reference numerals:

10. a framework; 11. a bobbin; 111. a through hole; 12. a first side plate; 121. a limiting strip; 13. a second side plate; 14. a base; 141. a wire passage; 142. a pin hole; 15. a pin; 151. a first horizontal extension; 152. a first bent portion; 153. a second horizontal extension; 154. a second bent portion; 20. a magnetic core group; 21. a first magnetic core; 22. a second magnetic core; 211. a first central column; 212. a first outer side column; 221. a second central column; 222. a second outer leg; 23. an air gap; 24. a square frame.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention clearer and more obvious, the following description of the present invention with reference to the accompanying drawings and embodiments is provided for further details. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1 to 5, an ultra-thin transformer according to an embodiment of the present invention includes a frame 10 and a magnetic core set 20 matched with the frame 10. Skeleton 10 includes the coil former 11 of a level setting, seted up on the coil former 11 run through in the through-hole 111 of coil former 11, both ends outwards extend respectively about coil former 11 have first curb plate 12 and the second curb plate 13 of perpendicular to coil former 11 center pin, the lower part of first curb plate 12 and second curb plate 13 is equipped with base 14, horizontal cross line passageway 141 is seted up to the lower terminal surface of base 14, the base 14 outside is equipped with pin hole 142, coil former 11 perpendicular to center pin's cross section personally submits the ellipse, through-hole 111 is the elliptical aperture, first curb plate 12 and second curb plate 13 are the ellipse circular, through setting up to the height of ellipse in order to reduce skeleton 10.

The coil is wound on the outer circumference of the coil former 11, the coil is located between the first side plate 12 and the second side plate 13, the coil is connected to the outside of the framework 10 through the wire passing channel 141 after being wound, and a first insulating tape is wound on the outer side of the coil.

Referring to fig. 6 to 8, the magnetic core group 20 includes a first magnetic core 21 and a second magnetic core 22 in an "E" shape, the first magnetic core 21 is provided with a first central pillar 211 with an oval cross section and two first outer pillars 212 symmetrically disposed on two sides of the first central pillar 211, the second magnetic core 22 is provided with a second central pillar 221 with an oval cross section and two second outer pillars 222 symmetrically disposed on two sides of the second central pillar 221, the first outer pillars 212 and the second outer pillars 222 are abutted to each other and located outside the coil former 11, the first central pillar 211 and the second central pillar 221 are located in the through hole 111 and have an air gap 23 therebetween, the first central pillar 211 and the second central pillar 221 enter the through hole 111 from two ends of the coil former 11 and are engaged or inserted into and matched with the through hole 111, the two first outer pillars 212 of the first magnetic core 21 are abutted to the two second outer pillars 222 of the second magnetic core 22, and the first central pillar 211 and the two first outer pillars 212 have the same length; the second center post 221 is shorter than the second outer post 222, the structure is such that an air gap 23 is left between the first center post 211 and the second center post 221, the air gap 23 is provided to reduce the saturation magnetic flux density, usually, the first magnetic core 21 with the same length as the outer post is processed in the process of producing the magnetic core group 20, and the first center post 211 of the first magnetic core 21 is shortened by an air gap 23 grinding wheel of a grinding machine tool, so as to produce the second magnetic core 22 with the shorter second center post 221, therefore, the magnetic core group 20 is very convenient to produce. Preferably, one side of the first outer pillar 212 close to the first center pillar 211 is concave arc; the second outer side column 222 is concave arc-shaped on the side close to the second center column 221. The first magnetic core 21 and the second magnetic core 22 surround each other, and at this time, the two first outer posts 212 and the two second outer posts 222 abut against each other to form a square frame 24, and a second insulating tape is wound around an outer ring of the square frame 24.

The pin hole 142 is provided with a pin 15, the pin 15 includes a first horizontal extending portion 151, a first bending portion 152, a second horizontal extending portion 153 and a second bending portion 154, which are sequentially disposed, and the first horizontal extending portion 151 is disposed in the pin hole 142. The upper parts of the first side plate 12 and the second side plate 13 are respectively provided with a limiting strip 121, and the limiting strip 121 is convenient for the installation of the magnetic core group 20.

To sum up, the utility model discloses a cooperate through oval-shaped coil former 11 and oval-shaped magnet center post for the high reduction of transformer, simultaneously, changed pin hole 142's position, made its pin 15 extend out from transformer skeleton 10's side, further, compressed the shared height of transformer in the use, the utility model has the advantages of simple structure, very big reduction occupation space again, the production of being convenient for simultaneously.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without modification to the method and technical solution of the present invention, or the present invention can be directly applied to other occasions without modification, all within the scope of the present invention.

Claims

1. An ultra-thin transformer comprises a framework (10) and a magnetic core group (20) matched with the framework (10), and is characterized in that the framework (10) comprises a coil rack (11) which is horizontally arranged, a through hole (111) penetrating through the coil rack (11) is formed in the coil rack (11), a first side plate (12) and a second side plate (13) which are perpendicular to the central shaft of the coil rack (11) are respectively and outwards extended from the left end and the right end of the coil rack (11), a base (14) is respectively arranged on the lower portions of the first side plate (12) and the second side plate (13), a horizontal wire passing channel (141) is formed in the lower end face of the base (14), pin holes (142) are formed in the outer side of the base (14), the cross section, perpendicular to the central shaft, of the coil rack (11) is in an oval shape, the through hole (111) is an oval hole, and the first side plate (12) and the second side plate (13) are in an oval shape;

the magnetic core group (20) comprises a first magnetic core (21) and a second magnetic core (22) which are E-shaped, wherein a first central column (211) with an oval cross section and two first outer side columns (212) symmetrically arranged on two sides of the first central column (211) are arranged on the first magnetic core (21), a second central column (221) with an oval cross section and two second outer side columns (222) symmetrically arranged on two sides of the second central column (221) are arranged on the second magnetic core (22), the first outer side columns (212) and the second outer side columns (222) are mutually abutted and located on the outer side of the coil rack (11), the first central column (211) and the second central column (221) are embedded or in an inserting fit with the through hole (111), the first central column (211) and the second central column (221) are located in the through hole (111), and an air gap (23) exists between the first central column (211) and the second central column (221).

2. The ultra-thin type transformer of claim 1, wherein the first center pillar (211) is equal in length to both of the first outer pillars (212); the second center post (221) is shorter than the length of the second outboard post (222).

3. The ultra-thin type transformer of claim 2, wherein the first outer leg (212) is concave arc-shaped on a side close to the first center leg (211); one side of the second outer side column (222) close to the second central column (221) is in a concave arc shape.

4. Ultra-thin transformer according to claim 3, wherein the coil is wound outside the coil frame (11) and between the first side plate (12) and the second side plate (13).

5. The ultra-thin transformer according to claim 4, wherein a first insulating tape is wound on an outer side of the coil.

6. The ultra-thin type transformer according to claim 1, wherein the first magnetic core (21) and the second magnetic core (22) surround to form a square frame (24), and the outer ring of the square frame (24) is wound with a second insulating tape.

7. The ultra-thin transformer of claim 6, wherein the lead hole (142) is provided with a lead (15), the lead (15) comprises a first horizontally extending portion (151), a first bending portion (152), a second horizontally extending portion (153) and a second bending portion (154), which are sequentially arranged, and the first horizontally extending portion (151) is disposed in the lead hole (142).

8. The ultra-thin type transformer according to claim 7, wherein the first side plate (12) and the second side plate (13) are each provided with a stopper bar (121) at an upper portion thereof.