TWM617024U - Transformer for facilitating automatic assembly - Google Patents

Abstract

This creation is about a transformer that is convenient for automated assembly, including an iron core group, multiple winding rectifier components and more than one isolator; each winding rectifier component is provided with a primary coil, a secondary coil and its Connected rectifier circuit; the circuit board has a ring portion, and an extension portion is formed on the outer side of the ring portion, the secondary side coil is formed on at least one surface of the ring portion, and the primary side coil is separated from each other. The two ends of the side coil are welded to the extension part, and the spacer is inserted between the ring part and the extension part to isolate the primary side welding pad; the core assembly is inserted and assembled on each winding rectifier part in a matching shape Because the winding rectifier components are modularized, it can facilitate the automatic assembly of transformers and improve production efficiency.

Description

Transformers that facilitate automated assembly

This creation is about a kind of transformer, especially a kind of transformer whose main components are modularized to facilitate automatic assembly.

The transformer is the core of the switching power supply design. In addition to high efficiency, it must also meet the safety regulations for the distance or insulation requirements of the primary and secondary sides. However, efficiency and safety regulations often conflict with each other, and high-efficiency transformers need to be improved by one or two. The coupling of the secondary side coil, that is, the closer the primary and secondary side coils are, the better the coupling and the higher the efficiency. However, in order to meet the safety requirements, it is necessary to maintain a sufficient safety distance or increase insulation materials to meet the insulation requirements. Increasing insulation will often increase the difficulty of transformer manufacturing and assembly, so that it not only increases the manufacturing cost but is not conducive to automation.

It can be seen from the above that the existing transformers are prone to get into a dilemma between efficiency and safety requirements, so further review is needed and feasible solutions are sought.

Therefore, the main purpose of this creation is to provide a transformer that is convenient for automated assembly, which can not only maintain the coupling of the primary and secondary coils, but also take into account the efficiency and safety requirements, and facilitate automated assembly.

To achieve the above-mentioned purpose, the aforementioned transformers that facilitate automated assembly include: There are more than two winding rectifying components, each winding rectifying component is mainly provided with a primary side coil, a secondary side coil and a rectifier circuit electrically connected to the secondary side coil on a circuit board; the circuit board It has a loop portion, and an extension portion is formed on the outer side of the loop portion, the secondary side coil is formed on at least one surface of the loop portion, and the primary side coil is provided separately from each other, and the primary side coil is composed of a multi-layer wire to form a winding, Its two ends are respectively welded on the extension part; An iron core group is mainly composed of a first iron core and a second iron core. The first iron core and the second iron core are mounted on the circuit board of each winding rectifying component in a matching shape, and correspondingly pass through the circuit board Between the rings; More than one spacer is inserted between the ring part and the extension part of the circuit board of each winding rectifier assembly, and partly covers the core set.

With the above-mentioned transformer design, since the winding rectifier components are modularized, it is beneficial to automatically assemble the transformer and improve production efficiency. Furthermore, the secondary side coil of each winding rectifier component is directly formed on the ring part of the circuit board. The ring part is further provided with the primary side coil, so that the primary side coil and the secondary side coil are highly coupled, and the primary side coil adopts multilayer insulated wires to form the winding, which can meet the insulation requirements of safety regulations, thus taking into account both efficiency and safety regulations. Require.

Regarding a preferred embodiment of this creation, please first refer to Figures 1 and 2, which are mainly composed of an iron core group 10, a plurality of winding rectifying components 20 and more than one spacer 30; as shown in Figure 3 Each winding rectifying component 20 is mainly provided with a secondary side coil 22, a primary side coil 23, and a rectifier circuit 24 connected to the secondary side coil 22 on a circuit board 21; the circuit board 21 is mainly a rectangular One side of the body extends outward to form a ring portion 211, and an extension portion 212 is further formed on the opposite outer side of the ring portion 211. The extension portion 212 is elongated, and a bonding pad 213 is formed on both ends of one surface.

Please refer to FIG. 4, in this embodiment, the circuit board 21 uses a copper foil circuit on at least one surface of the ring portion 211 to form the secondary coil 22, and the secondary coil 22 penetrates the circuit board 21 body The circuit formed on the rectifier circuit 24 is electrically connected to the rectifier circuit 24. The rectifier circuit 24 is composed of a plurality of electronic components connected through the circuit formed on the body of the circuit board 21. The output terminal of the rectifier circuit 24 is connected to the output formed on the circuit board 21. The terminal point 214 is connected for external connection. In this embodiment, one of the output terminal points 214 is further provided with a copper pin 215 for adjusting impedance when connecting externally.

In this embodiment, the bottom end of the circuit board 21 is further formed with a plurality of through holes 216 and/or golden fingers (not shown) for electrical connection with the main board when the transformer is installed on the main board of the power supply.

The primary side coil 23 is wound by a multi-layer insulated wire, which is arranged on the ring portion 211 of the circuit board 21, and is stacked on the secondary side coil 22 to form a good coupling with it, because the primary side coil 23 is formed by It is composed of multi-layer insulated wires, so it can meet the distance requirements of safety regulations. Two ends of the primary coil 23 are respectively welded to the welding pads 213 at both ends of the extension portion 212.

In the foregoing description, this creation includes a plurality of winding rectification components 20, each winding rectification component 20 is divided into a circuit board 21 with a primary side coil 23, a secondary side coil 22 and a rectifier circuit 24 to form one. Module, please refer to Figure 2 and Figure 5. This creation further includes a second winding rectifying component 20', and the difference from the winding rectifying component 20 is that the second winding rectifying component 20' does not have a primary side coil 23' , The other structures are exactly the same.

That is, the second winding rectifying component 20' is mainly provided with a secondary side coil 22' and a rectifying circuit 24' on a circuit board 21', and the circuit board 21' is mainly formed on one side of a rectangular body extending outwards. A ring portion 211', and a long elongated extension portion 212' is further formed on the opposite outer side of the ring portion 211'. A solder pad 213' is formed on both ends of a surface of the extension portion 212'. The circuit board 21' The secondary side coil 22' is formed on at least one surface of the ring portion 211' with a copper foil circuit, and the secondary side coil 22' is electrically connected to the rectifier circuit 24' through a circuit formed on the body of the circuit board 21', and the rectifier The output terminal of the circuit 24' is connected to an output terminal contact 214' formed on the circuit board 21' for external connection. One of the output terminal contacts 214' is further provided with a copper pin 215'.

Still referring to FIG. 2, the core set 10 is mainly composed of a first core 11 and a second core 12, both of which can be of EI type, EE type or other forms, in this embodiment are EE type , The first core 11 and the second core 12 have a central part and two side parts respectively, the central part of which is cylindrical, and the inner side walls of the two side parts are arc-shaped and are connected to the ring parts of the circuit boards 21, 21' 211 and 211' are matched in shape, the central part of the first iron core 11 and the second iron core 12 correspond to the ring parts 211, 211' of the upper circuit boards 21, 21' of each winding rectifying part 20, 20', and the two side parts It is relatively wrapped around the ring portions 211, 211', and the core assembly 10 and the winding rectifying components 20, 20' are combined to form a rectangular cube as a whole (as shown in FIG. 6).

In order to further meet the requirements of safety regulations, the spacer 30 is provided between the core assembly 10 and the extension portions 212, 212' of each winding rectifying component 20, 20'. The spacer 30 includes a horizontal portion and a vertical portion. The horizontal portion and the vertical portion are connected at right angles to form an L-shaped cross-section. The width of the horizontal portion and the vertical portion matches the width of the core assembly 10. In this embodiment, two spacers 30 are provided. The vertical part penetrates between the outer side wall of the core assembly 10 and the inner ends of the extension parts 212 and 212', and the horizontal part covers the top and bottom edges of the core assembly 10 (please refer to FIG. 7 for cooperation).

Since both ends of the primary coil 23 are respectively welded to the pads 213 at the ends of the extension portions 212, 212', and spacers 30 are installed inside the extension portions 212, 212' to effectively isolate the core assembly 10 and The primary welding pads located on the extensions 212, 212' meet the requirements of safety regulations.

From the above description, we can understand the specific structure of the various implementation modes of this creation, and these designs have at least the following advantages: 1. Facilitate automated assembly: This creation integrates the main components of the transformer such as the primary coil, the secondary coil and the rectifier circuit into a module through a circuit board, which can facilitate assembly through an automated process and help improve production efficiency , Reduce manufacturing costs. 2. Taking into account both efficiency and safety: This creation uses a copper foil circuit to form the secondary side coil on the ring of the circuit board, and sets the primary coil composed of multilayer insulated wires on the ring to form a better coupling. It not only improves efficiency but also meets safety requirements. 3. No additional processing is required, and it is convenient for the power supply to be used directly: this creation uses through holes and/or gold fingers to form the connection ports on the circuit board of each winding rectifier component, and further sets the copper pin to adjust the impedance, which can be directly used. As the transformer component of the power supply, it is convenient for the application of the power supply.

In summary, this creation is innovative in structure compared to the prior art, and has a significant improvement in efficiency. It can be easily completed by a person with ordinary knowledge in the technical field, so it is progressive and meets the patent requirements.

10: Iron core group 11: The first core 12: The second core 20: Winding rectifier parts 20’: Second winding rectifier part 21, 21’: Circuit board 211, 211’: Ring 212, 212’: Extension 213, 213’: Soldering pad 214, 214’: Output terminal contact 215, 215’: Copper pin 216: Via 22, 22’: Secondary side coil 23, 23’: Primary side coil 24, 24’: Rectifier circuit 30: spacer

Figure 1 is a perspective view of a preferred embodiment of the creation. Figure 2 is an exploded view of a preferred embodiment of the authoring. Fig. 3 is an exploded view of a winding rectifier assembly according to a preferred embodiment of the invention. Fig. 4 is a plan view of a circuit board of a winding rectifier assembly according to a preferred embodiment. Fig. 5 is a perspective view of a second winding rectifier assembly according to a preferred embodiment. Fig. 6 is another perspective view of the creation of a preferred embodiment. Figure 7 is a side plan view of a preferred embodiment of the creation.

10: Iron core group

11: The first core

12: The second core

20: Winding rectifier parts

20’: Second winding rectifier part

30: spacer

Claims (10)

A transformer that is convenient for automated assembly, including: There are more than two winding rectifying components, each winding rectifying component is mainly provided with a primary side coil, a secondary side coil and a rectifier circuit electrically connected to the secondary side coil on a circuit board; the circuit board It has a loop portion, and an extension portion is formed on the outer side of the loop portion, the secondary side coil is formed on at least one surface of the loop portion, and the primary side coil is separated from each other, and the primary side coil is composed of a multilayer wire. The two ends are respectively welded to the extension part; An iron core group is mainly composed of a first iron core and a second iron core. The first iron core and the second iron core are mounted on the circuit board of each winding rectifying component in a matching shape, and correspondingly pass through the circuit board Between the rings; More than one spacer is inserted between the ring part and the extension part of the circuit board of each winding rectifier assembly, and partly covers the core set. As described in claim 1, the circuit board of the winding rectifying component mainly extends outward from one side of a rectangular body to form the ring part, and further forms the extension part on the opposite outer side of the ring part, The extension part is elongated, and a welding pad is formed on both ends of one surface. According to claim 1, the transformer is convenient for automated assembly, the circuit board uses a copper foil circuit on at least one surface of the ring portion to form the secondary side coil, and the secondary side coil penetrates the circuit formed on the circuit board body and the circuit board. The rectifier circuit is electrically connected, and the output terminal of the rectifier circuit is connected with the output terminal contact formed on the circuit board. As described in claim 3, for the transformer that is convenient for automated assembly, one of the output terminal contacts on the circuit board is provided with a copper pin. As described in claim 1 for the transformer that is convenient for automated assembly, the bottom end of the circuit board body is further formed with a plurality of through holes and/or golden fingers. As described in claim 1, the first iron core and the second iron core of the iron core group have a central part and two side parts respectively, the central part is cylindrical, and the inner side walls of the two side parts are arc-shaped , And match the shape of the ring on the circuit board. As described in claim 1, the isolator includes a horizontal part and a vertical part, the horizontal part and the vertical part are connected at right angles at one end to present an L-shaped cross section, and the width of the horizontal part and the vertical part Matching the width of the core set, the spacer is inserted between the outer side wall of the core set and the inner end of the extension with its vertical part, and the horizontal part covers the top or bottom edge of the core set. According to claim 7 of the transformer that is convenient for automatic assembly, two spacers are arranged between the outer side wall of the core group and the inner end of the extension part, and the horizontal parts of the spacers respectively cover the top and bottom edges of the core group . As described in any one of Claims 1 to 8, the transformer that is convenient for automated assembly includes a second winding rectifier component. The circuit board of the winding rectifier component mainly extends outward from one side of a rectangular body to form a ring portion, and An extension part is further formed on the opposite outer side of the ring part, the extension part is elongated, and a welding pad is formed on both ends of one surface. According to claim 9 of the transformer that is convenient for automated assembly, the circuit board uses a copper foil circuit on at least one surface of the ring portion to form the secondary side coil, and the secondary side coil passes through the circuit formed on the circuit board body and the circuit board. The rectifier circuit is electrically connected, the output terminal of the rectifier circuit is connected to an output terminal contact formed on the circuit board, and one of the output terminal contacts on the circuit board is provided with a copper pin; A plurality of through holes and/or golden fingers are further formed on the bottom end of the main body of the circuit board.

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