Novel transformer structure

Abstract

The utility model discloses a novel transformer structure which comprises a framework, a plurality of magnetic ring bodies, an insulated wire winding and a copper shell, the framework comprises an upper ring body and a lower ring body, a plurality of vertical connecting parts are arranged between the upper ring body and the lower ring body, and a mounting position is formed between every two adjacent vertical connecting parts. And each magnetic ring body is arranged at one mounting position, and the plurality of magnetic ring bodies form an annular magnetic core with an air gap. The insulated wire winding is formed by winding an insulated wire on the annular magnetic core and the framework, the insulated wire winding forms a primary winding, and the head end and the tail end of the insulated wire winding are connected with power connection terminals; the upper end of the copper shell is open, and the interior is a cavity. The insulation wire winding is wound on the annular magnetic core and the framework and then is integrally arranged in a cavity of the copper shell, a power connection terminal connected with the insulation wire winding is led out of the copper shell, pouring sealant is poured into the copper shell, and the copper shell forms a secondary winding. The pouring sealant has the effects of fixation, insulation, heat conduction and heat dissipation, no adhesive tape or Nomex paper needs to be added for insulation, and the production cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer electronic components, in particular to a flyback transformer. Background Art

[0002] Flyback transformers are used in various adapters, i.e., low-power power supplies, to achieve low-power output. During operation, when current flows through the primary side, no current flows through the secondary winding to offset the primary ampere-turns, causing the magnetic core to easily saturate. Even at low output power, it will immediately saturate and damage the switch tube. In order to avoid saturation, the existing practice is to open an air gap on the magnetic core. The current conventional method of segmenting the magnetic core with an air gap is more complicated when the air gap of the magnetic core is too large. It is usually a method of adding multiple magnetic columns and gaskets. In addition, it is necessary to add tape or Nomi paper to isolate and insulate the winding. Not only is the cost high, but there are also adverse effects such as leakage inductance and the generation of some spike voltages. Utility Model Content

[0003] In view of this, the utility model proposes a novel transformer structure to solve the above problems.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A novel transformer structure includes a skeleton, a plurality of magnetic ring bodies, an insulating wire winding and a copper shell. The skeleton includes an upper ring body and a lower ring body. A plurality of vertical connecting parts are provided between the upper ring body and the lower ring body, and mounting positions are formed between adjacent vertical connecting parts. Each of the plurality of magnetic ring bodies is placed in a mounting position, and the plurality of magnetic ring bodies form an annular magnetic core with an air gap. The insulating wire winding is formed by winding insulating wire on the annular magnetic core and the skeleton, and the insulating wire winding forms a primary winding, and the first and second ends of the insulating wire winding are connected to power terminals. The copper shell is open at the upper end, and the interior is a cavity. After the insulating wire winding is wound around the annular magnetic core and the skeleton, it is placed in the cavity of the copper shell as a whole, and the power terminals connected to the insulating wire winding are led out of the copper shell. Potting glue is poured into the copper shell, and the copper shell forms a secondary winding.

[0006] Furthermore, a power terminal fixing seat is arranged on one side of the frame, a clamping slot is arranged on the outer side of the power terminal fixing seat, and the power terminal is fixed by passing upward through the bottom end of the clamping slot.

[0007] Furthermore, a notch is provided on one side edge of the upper opening of the copper shell, and the connection between the power terminal fixing seat and the frame is plugged into the notch.

[0008] Furthermore, a first connecting ear and a second connecting ear are provided on the outer edge of the upper ring body, and a first bayonet position and a second bayonet position corresponding to the first connecting ear and the second connecting ear are provided on the upper opening edge of the copper shell.

[0009] Preferably, the copper shell is integrally formed.

[0010] Preferably, the insulated wire of the insulated wire winding has an insulating layer on the surface, and the wire core is formed by twisting multiple strands of enameled wire.

[0011] Preferably, the magnetic ring body includes three sector ring magnets of the same size, and there are three corresponding mounting positions on the frame, and three sector ring magnets are installed accordingly, and the three sector ring magnets form a ring magnetic core with an air gap.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] A ring core with an air gap is formed by multiple magnetic ring bodies; the air gap is directly guaranteed by the skeleton, and the skeleton also plays a role in fixing and supporting the insulated wire winding and the ring core, as well as isolating and insulating. And by pouring potting glue, it plays a role in overall fixing, insulation, heat conduction and heat dissipation, without adding tape or Nomi paper for insulation, which is conducive to reducing production costs.

[0014] The skeleton design of upper ring body, lower ring body and multiple vertical connecting parts is adopted, and the structural design is simple. By adjusting the size and number of magnetic ring bodies and the design of the mounting positions on the skeleton, different power requirements can be met, reducing the secondary development cost of products with different power requirements.

[0015] The primary winding formed by the insulated wire winding and the secondary winding formed by the copper shell are pot-shaped and in close contact, with small leakage inductance, ensuring energy transmission between the primary and secondary sides and reducing the generation of some peak voltages. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structural decomposition of an embodiment of the utility model.

[0017] Reference numerals:

[0018] 1. Frame; 101. Power terminal fixing seat; 102. First connecting ear; 103. Second connecting ear; 21. First sector annular magnet; 22. Second sector annular magnet; 23. Third sector annular magnet; 3. Insulated wire winding; 4. Power terminal; 5. Copper shell; 501. Notch position; 502. First bayonet position; 503. Second bayonet position; 6. Potting glue. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present disclosure will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present disclosure, rather than all embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present disclosure.

[0020] See also Figure 1 , which is a specific embodiment provided by this technical solution.

[0021] A novel transformer structure includes a skeleton 1, a plurality of magnetic ring bodies, an insulating wire winding 3 and a copper shell 5. The skeleton 1 includes an upper ring body and a lower ring body. A plurality of vertical connecting parts are provided between the upper ring body and the lower ring body, and a mounting position is formed between adjacent vertical connecting parts. Each of the plurality of magnetic ring bodies is placed in a mounting position, and the plurality of magnetic ring bodies form an annular magnetic core with an air gap. The insulating wire winding 3 is formed by winding insulating wire on the annular magnetic core and the skeleton 1. The insulating wire winding 3 forms a primary winding, and the first and second ends of the insulating wire winding 3 are connected to power terminals 4. The copper shell 5 is open at the upper end, and the interior is a cavity. After the insulating wire winding 3 is wound around the annular magnetic core and the skeleton 1, it is placed in the cavity of the copper shell 5 as a whole. The power terminals 4 connected to the insulating wire winding 3 are led out of the copper shell 5. The copper shell 5 is filled with potting glue 6, and the copper shell 5 forms a secondary winding.

[0022] A ring-shaped magnetic core with an air gap is formed by multiple magnetic ring bodies; the air gap is directly ensured by the skeleton 1, and the skeleton 1 also plays a role of fixing and supporting the insulating wire winding 3 and the ring-shaped magnetic core and isolating and insulating. And by pouring the potting glue 6, it plays a role of overall fixing, insulation, heat conduction and heat dissipation, and there is no need to add tape or Nomi paper for insulation, which is conducive to reducing production costs.

[0023] Furthermore, a fixing seat 101 for the power terminal 4 is provided on one side of the frame 1 , and a slot is provided on the outer side of the fixing seat 101 for the power terminal 4 , and the power terminal 4 is fixed by passing upward through the bottom end of the slot.

[0024] Furthermore, a notch 501 is provided at one edge of the upper opening of the copper shell 5 , and the connection between the fixing seat 101 of the power terminal 4 and the frame 1 is plugged into the notch 501 .

[0025] Further, the outer edge of the upper ring body is provided with a first connecting ear 102 and a second connecting ear 103, and the upper opening edge of the copper shell 5 is provided with a first bayonet position 502 and a second bayonet position 503 correspondingly connected to the first connecting ear 102 and the second connecting ear 103. The first connecting ear 102 and the second connecting ear 103 are correspondingly connected to the first bayonet position 502 and the second bayonet position 503, so as to realize automatic positioning, identification and assembly, which is conducive to automatic production.

[0026] Preferably, the copper shell 5 is integrally formed.

[0027] Preferably, the insulated wire of the insulated wire winding 3 has an insulating layer on the surface, and the wire core is formed by twisting multiple strands of enameled wire.

[0028] See also Figure 1Preferably, the magnetic ring body includes three first sector ring magnets 21, second sector ring magnets 22, and third sector ring magnets 23 of the same size, and the corresponding mounting positions on the skeleton 1 include three, and three sector ring magnets are installed accordingly, and the three sector ring magnets form a ring core with an air gap. The three magnetic ring bodies composed of the above shape and quantity, and the corresponding mounting positions on the skeleton 1 are a preferred embodiment structure of a flyback transformer.

[0029] This technical solution forms a ring-shaped magnetic core with an air gap by splicing multiple magnetic ring bodies and a skeleton 1. Compared with the conventional segmented air gap method of the current magnetic core, it reduces labor and material costs and is conducive to product automation and standardization. The primary winding formed by the insulating wire winding 3 and the secondary winding formed by the copper shell 5 are pot-shaped and in close contact, with a small leakage inductance, ensuring energy transmission between the primary and secondary sides and reducing the generation of some peak voltages.

[0030] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A new transformer structure, characterized in that: include: The skeleton comprises an upper ring body and a lower ring body, a plurality of vertical connecting parts are arranged between the upper ring body and the lower ring body, and mounting positions are formed between adjacent vertical connecting parts; A plurality of magnetic ring bodies, each magnetic ring body is placed in an installation position, and the plurality of magnetic ring bodies form a ring-shaped magnetic core with an air gap; An insulated wire winding, wherein the insulated wire winding is formed by winding an insulated wire on the annular magnetic core and the frame, the insulated wire winding forms a primary winding, and the first and second ends of the insulated wire winding are connected to power terminals; The copper shell has an opening at the top and a cavity inside; The insulating wire winding is wound around the annular magnetic core and the frame and then placed in the cavity of the copper shell. The power terminals connected to the insulating wire winding are led out of the copper shell. The copper shell is filled with potting glue, and the copper shell forms a secondary winding.

2. The novel transformer structure according to claim 1 is characterized in that: A power terminal fixing seat is arranged on one side of the frame, a clamping slot is arranged on the outer side of the power terminal fixing seat, and the power terminal is passed upward through the bottom end of the clamping slot and fixed.

3. The new transformer structure according to claim 2 is characterized in that: A notch is provided on one side edge of the upper opening of the copper shell, and the connection between the power terminal fixing seat and the frame is plugged into the notch.

4. The novel transformer structure according to claim 1 is characterized in that: The outer edge of the upper ring body is provided with a first connecting ear and a second connecting ear, and the upper opening edge of the copper shell is provided with a first bayonet position and a second bayonet position corresponding to the first connecting ear and the second connecting ear.

5. The novel transformer structure according to claim 1 is characterized in that: The copper shell is integrally formed.

6. The novel transformer structure according to claim 1 is characterized in that: The insulated wire of the insulated wire winding has an insulating layer on the surface, and the wire core is formed by twisting a plurality of enameled wires.

7. The novel transformer structure according to claim 1 is characterized in that: The magnetic ring body includes three sector ring magnets of the same size, and there are three corresponding mounting positions on the frame, and three sector ring magnets are installed accordingly. The three sector ring magnets form a ring magnetic core with an air gap.

Images