CN210245282U

CN210245282U - Transformer

Info

Publication number: CN210245282U
Application number: CN201921290255.0U
Authority: CN
Inventors: Zongzhou Yan; 严宗周
Original assignee: Shenzhen Yuanneng Electric Appliance Co ltd
Current assignee: Shenzhen Yuanneng Electric Appliance Co ltd
Priority date: 2019-08-10
Filing date: 2019-08-10
Publication date: 2020-04-03
Anticipated expiration: 2029-08-10

Abstract

The utility model belongs to the switching power supply field relates to a switching power supply's transformer. The transformer comprises a framework, a coil, a magnetic core and an insulating adhesive tape, wherein a wire hanging block and a clearance groove are arranged on the framework so as to facilitate automatic production, and the winding process of the transformer is further improved by improving the structure on the framework, so that the automation and standardization of the production of the transformer are realized, the production efficiency of the transformer is improved, and the industrialization of the production of the transformer is realized.

Description

Transformer

Technical Field

The utility model belongs to the technical field of switching power supply, a transformer is related to.

Background

The existing electronic devices such as mobile phones and the like can not be provided with chargers, and in order to enable the connected current to meet the charging requirement, transformers are connected into the chargers. The transformer of the existing charger needs to meet the GB4943 certification and the EMC certification so as to meet the safety specification. The volume of various electronic products is required to be smaller and smaller, and the space occupied by internal components of the electronic products is also smaller and smaller, so that the transformer serving as a core device of the switching power supply is inevitably required to adapt to the development trend.

The transformer mainly comprises a framework, a magnetic core penetrating through the framework and a coil mounted on the framework, wherein a secondary coil and a primary coil need to be wound on the framework of the transformer in an insulating mode in the machining process, and a sleeve needs to be added when pins are connected so as to ensure the insulation of the primary coil. The existing transformer processing adopts manual winding and sleeve installation, can not realize automation and high yield, adopts manual operation, has the problems of low product yield, low processing efficiency, high cost and the like, and is not beneficial to industrialization.

Disclosure of Invention

An object of the utility model is to provide a switching power supply transformer to prior art not enough.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a transformer comprises a framework, a coil and a magnetic core; a primary mounting block is arranged on one side of the framework, a secondary mounting block is arranged on the other side of the framework, a wire hanging block group is arranged on one side of the framework, which is close to the secondary mounting block, and a wire winding block group is arranged on one side of the framework, which is far away from the secondary mounting block; the winding block group comprises a first winding block, and a wire hanging fulcrum and a mounting groove are arranged on the first winding block; the wire hanging block group comprises a fifth wire hanging block; the magnetic core is sleeved on the framework; the coil is wound on the framework and is positioned in the magnetic core.

Furthermore, the solenoid includes primary coil, feedback coil, shielding coil and secondary coil, be equipped with insulating tape between each layer of primary coil, feedback coil, shielding coil and secondary coil.

Further, the feedback coil of the same layer comprises at least two segments of coils.

Further, the shielding coil of the same layer comprises at least two segments of coils.

Further, the solenoid includes primary coil, feedback coil, shielding coil and secondary coil, feedback coil and shielding coil are with the layer setting, be equipped with insulating adhesive tape between primary coil and feedback coil and the shielding coil, be equipped with insulating adhesive tape between feedback coil and shielding coil and the secondary coil.

Furthermore, a pin seat is respectively arranged on the primary mounting block and the secondary mounting block, and a pin is arranged on the pin seat.

Furthermore, first clearance grooves are formed between the pin bases of the primary mounting block, and third clearance grooves are formed in the pin bases of the secondary mounting block.

Furthermore, second clearance grooves are respectively formed in the pin bases of the primary mounting blocks.

Furthermore, first clearance grooves which are close to the edge of the framework are respectively communicated with first lead grooves in a slope type.

Furthermore, a second lead slot is arranged between the secondary mounting block and the framework and close to one side of the pin; and a third lead groove communicated with the second lead groove is arranged close to the edge of the secondary mounting block.

The utility model has the advantages that:

the utility model provides a transformer, through set up the hanging wire block group on the skeleton, fix the wire winding of each group of coils on the hanging wire block preliminarily when the coil is wound, improved the winding technology of transformer; the empty avoiding groove is arranged on the framework, so that the winding of the primary coil and the winding of the secondary coil are erected, the problem of staggering can not occur during winding, the secondary coil can be directly wound, and a sleeve is not required to be additionally arranged; through set up the lead wire groove on the skeleton, fix the wire winding of each group's coil in the lead wire groove when the coiling, avoid the wire winding of looks connection coil to take place the contact, to sum up, through having improved the skeleton texture, further improved the winding technology of transformer to realize automation, the standardization of transformer production, improve the production efficiency of transformer, make the industrialization of transformer production.

Drawings

FIG. 1 is a schematic diagram of a skeleton structure of a transformer according to the present embodiment;

FIG. 2 is a schematic structural diagram of the bobbin of the transformer according to the present embodiment at another angle;

FIG. 3 is a partially enlarged schematic view of portion A of FIG. 2;

FIG. 4 is a schematic structural diagram of the bottom of the bobbin of the transformer according to the present embodiment;

fig. 5 is a schematic plan view of the bottom of the bobbin of the transformer according to the present embodiment.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1 to 4, a transformer is provided in this embodiment, including skeleton, solenoid, magnetic core and insulating tape, around being equipped with the solenoid on the skeleton, the solenoid includes primary, feedback coil, shielding coil, secondary and insulating tape, still the cover is equipped with the magnetic core on the skeleton. The magnetic core is fixedly sleeved on the framework, the magnetic core is connected to the pins of the primary mounting block 11 through wires, and an insulating adhesive tape is wound outside the magnetic core.

In some embodiments, the framework is sequentially wound with a first primary coil, a VCC coil, a shielding coil and a secondary coil from inside to outside, and insulating tapes are arranged between the first primary coil and the VCC coil, between the VCC coil and the shielding coil and between the shielding coil and the secondary coil; the VCC coil comprises a plurality of sections of wound coils which are arranged on the same layer; the shielding coil also comprises a plurality of sections of wound coils which are arranged on the same layer.

In some embodiments, a magnetic core is further sleeved on the framework, and an insulating adhesive tape is further wound outside the magnetic core.

In some embodiments, the magnetic core is externally wound with a wire connected to a static pin of the primary mounting block 11 for grounding.

In some embodiments, the VCC coil and the shielding coil are disposed on the same layer, and the VCC coil and the shielding coil are continuously wound by the same wire; a gap is left between the VCC coil and the shielding coil. Be equipped with insulating adhesive tape between primary and VCC coil and the shield coil, be equipped with insulating adhesive tape between VCC coil and shield coil and the secondary coil.

Specifically, the framework comprises a first limiting plate 1, a second limiting plate 2 and a connecting block 3 connected between the first limiting plate 1 and the second limiting plate 2; a primary mounting block 11 is arranged at one end of the first limiting plate 1, and a secondary mounting block 12 is arranged at one end, far away from the primary mounting block 11, of the first limiting plate 1. In some other embodiments, the first limiting plate 1 is further provided with a limiting block 13 at one end close to the secondary mounting block 12.

More specifically, the side of the framework far away from the secondary mounting block 12 is provided with a winding block group, and the winding block group is arranged at two ends of the second limiting plate 2. In one embodiment, the winding blocks include a first winding block 411, a second winding block 412 and a third winding block 413, the first winding block 411 and the second winding block 412 are arranged on the second limiting plate 2 at intervals, and the first winding block 411 and the second winding block 412 are arranged on one side of the primary mounting block 11; the third winding block 413 is arranged on the second limiting plate 2 close to one side of the secondary mounting block 12; the first winding block 411 comprises a wire hanging fulcrum 4111 and a mounting groove 4112; the mounting groove 4112 is used for fixing a hanging wire of the shielding coil or the VCC coil, so that the coil is prevented from running and the shielding coil or the VCC coil is prevented from touching the secondary wire; in some embodiments, the hanging wires are respectively placed on the mounting groove 4112 and the hanging wire supporting point 4111, so as to provide isolation, for example, in a sandwich winding method, the two shielding hanging wires can be isolated. The third winding block 413 is provided with two wire hanging supporting points for fixing the winding of the secondary coil, avoiding collision with other coils, and also playing a role in avoiding gaps among different wires. The winding blocks of the winding block group are used for fixing winding of each group of coils of the coil, for example, when the feedback coil is wound, the winding of the feedback coil is led out from the pins, is wound upwards to the first winding block 411 or the second winding block 412 for fixing, and is connected into the pins after being wound anticlockwise, so that the primary coil and the secondary coil can be avoided, and the windings of the coils are prevented from colliding; when the shielding coil is wound, the winding of the shielding coil is led out by the pins, and the shielding coil is wound on the framework in a counterclockwise manner and then hung on the first winding block 411 or the second winding block 412, so that the shielding coil can avoid the primary coil and the secondary coil, and the coils are prevented from being collided.

In some other embodiments, only one first winding block 411 may be provided on the second limiting plate 2 near the primary mounting block 11. The number of the winding block groups on the first limiting plate 1 is not specifically limited, and one, two, three or even more winding block groups may not be arranged or arranged, and the number of the winding block groups is adjusted according to the requirement of the transformer in actual production.

In detail, a wire hanging block group is arranged on one side of the framework close to the secondary mounting block 12, is arranged on one side of the first limiting plate 1 close to the secondary mounting block 12, and comprises a fourth wire hanging block 421 and a fifth wire hanging block 422; the fourth wire hanging block 421 is arranged to facilitate the automation of the winding of the transformer in the winding process; the fourth wire hanging block 422 is arranged at the bottom of the framework 11 and used for shielding and practical use at the bottom of the winding process. Specifically, the fourth wire hanging block 421 is disposed on the secondary mounting block 12 near one side of the winding block, and is configured to wind the winding wire of the secondary coil around the pin of the secondary mounting block 12 through the fourth wire hanging block 421 when the secondary coil is wound, so as to prevent the winding wire from contacting the winding wire of the primary coil; the fifth wire hanging block 422 is disposed on the first limiting plate 1 near one side of the wire winding block, and is configured to hang a wire of the primary coil or the shielding coil on the fifth wire hanging block 422 when the primary coil or the shielding coil is wound, so as to prevent the wire from contacting with a wire of the secondary coil.

As shown in fig. 1, the primary mounting block 11 and the secondary mounting block 12 include a plurality of pin bases, and pins are disposed at one ends of the pin bases. In this embodiment, the primary mounting block 11 includes a first pin 111, a second pin 112, a third pin 113, a fourth pin 114, and a fifth pin 115, and the secondary mounting block 12 includes a sixth pin 121 and a seventh pin 122; one end of the pin base of the primary mounting block 11 and the secondary mounting block 12 is provided with a pin, that is, one pin is mounted on one pin base. The limiting block 13 is provided with pins in common. The number of the pins is not particularly limited, one, two, three or even a plurality of pins can be arranged, and the positions of the pins can be replaced and adjusted according to the requirements of the transformer in actual production.

As shown in fig. 2, first clearance grooves 116 are provided between the pin bases of the primary mounting block 11, second clearance grooves 117 are also provided on the pin bases of the primary mounting block 11, and third clearance grooves 123 are also provided on the pin bases of the secondary mounting block 12. Specifically, the depth of first clearance groove 116 is greater than the depth of second clearance groove 117; and in the winding process, the winding of each group of coils of the coil is connected with the pins through the clearance grooves. In one embodiment, the bottom plane of the first clearance groove 116 is lower than the plane of the parallel section of the secondary coil and the bottom plane of the groove, so that the secondary coil and other wires are erected to realize clearance insulation; one end of the second clearance groove 117, which is far away from the first clearance groove 116, extends to a position below an insulating glue layer between the feedback coil and the secondary coil, so that the secondary coil and the primary coil are erected, and the clearance insulation effect is realized.

As shown in fig. 2, the first clearance grooves 116 disposed near the frame edge are respectively communicated with the first lead grooves 14 in a slope manner. Specifically, the first clearance groove 116 near the edge of the first limit plate 1 is further communicated with the first lead groove 14 in a slope manner, and in some embodiments, the winding of the primary coil is connected with the pins and then passes through the first lead groove 14.

As shown in fig. 2, a second lead slot 15 is disposed between the secondary mounting block 12 and the bobbin and on a side close to the pin, specifically, the second lead slot 15 is disposed on the back of the secondary mounting block 12 and between the secondary mounting block 12 and the bobbin, and the second lead slot 15 is used for winding a wire of the secondary coil around a third lead slot 16.

As shown in fig. 2, a third lead groove 16 communicating with the third lead groove 16 is disposed near the edge of the secondary mounting block 12, specifically, the third lead groove 16 is disposed on the upper surface of one side of the secondary mounting block 12, and the third lead groove 16 is used for placing the winding of the secondary coil to avoid collision with other windings.

The above-mentioned embodiments are only one of the preferred embodiments of the present invention, and the ordinary changes and substitutions performed by those skilled in the art within the technical scope of the present invention should be included in the protection scope of the present invention.

Claims

1. A transformer is characterized by comprising a framework, a coil and a magnetic core; a primary mounting block is arranged on one side of the framework, a secondary mounting block is arranged on the other side of the framework, a wire hanging block group is arranged on one side of the framework, which is close to the secondary mounting block, and a wire winding block group is arranged on one side of the framework, which is far away from the secondary mounting block; the magnetic core is sleeved on the framework; the wire is wound on the framework and is positioned on the inner side of the magnetic core.

2. The transformer of claim 1, wherein the coil comprises a primary coil, a feedback coil, a shield coil, and a secondary coil, and wherein insulating tape is disposed between the layers of the primary coil, the feedback coil, the shield coil, and the secondary coil.

3. The transformer of claim 2, wherein the feedback coil of a same layer comprises at least two segments of coils.

4. The transformer of claim 2, wherein the shield coils of a same layer comprise at least two segments of coils.

5. The transformer of claim 1, wherein the coil package comprises a primary coil, a feedback coil, a shielding coil and a secondary coil, the feedback coil and the shielding coil are arranged on the same layer, an insulating tape is arranged between the primary coil and the feedback coil and between the primary coil and the shielding coil, and an insulating tape is arranged between the feedback coil and the secondary coil and between the feedback coil and the shielding coil.

6. The transformer of claim 1, wherein the primary mounting block and the secondary mounting block are respectively provided with a pin base, and the pin base is provided with a pin.

7. The transformer of claim 6, wherein first clearance grooves are formed between the pin bases of the primary mounting blocks, and third clearance grooves are formed on the pin bases of the secondary mounting blocks.

8. The transformer of claim 7, wherein the pin bases of the primary mounting blocks are further provided with second clearance grooves, respectively.

9. The transformer according to claim 7, wherein the first clearance grooves arranged near the edge of the bobbin are respectively communicated with first lead grooves in a slope manner.

10. The transformer of claim 1, wherein a second lead slot is disposed between the secondary mounting block and the bobbin on a side close to the pin; and a third lead groove communicated with the second lead groove is arranged close to the edge of the secondary mounting block.