A transformer facilitating automated production

Abstract

The utility model discloses a transformer convenient for automatic production relates to transformer field. Including framework and fixed on the magnetic core main body of framework, the first primary N1, second primary N2 and secondary winding N3 are wound in proper order on the framework, and the secondary winding N3 adopts the winding of insulating wire, and the framework extends and is equipped with the widened portion, and the widened portion is equipped with the pin fixed with the insulating wire of secondary winding N3. Since the secondary winding N3 adopts the winding of insulating wire, and the framework extends and is equipped with the widened portion, and the widened portion is equipped with the pin fixed with the insulating wire of secondary winding N3. The widened portion on the framework ensures enough safety distance, prevents the transformer from being punctured, and meanwhile, the secondary winding N3 is made of insulating wire, so that the bushing process is saved, the automatic production of transformer is facilitated, and the production efficiency is higher.

Description

Technical Field

[0001] This utility model relates to the field of transformers, and in particular to a transformer that is easy to automate production. Background Technology

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. A transformer consists of an iron core (or magnetic core body) and coils. The coils have two or more windings. However, in reality, in order to increase the high voltage withstand capability of the transformer, the traditional method is to add bushings to solve this problem. However, using bushings increases the difficulty of transformer production, is not conducive to automated production, and leads to low production efficiency of transformers. Utility Model Content

[0003] This invention addresses the problem that the use of bushings in transformer production increases production difficulty, hinders automated production, and leads to low production efficiency. It provides a transformer that facilitates automated production.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A transformer that is easy to automate production includes a frame and a magnetic core body fixed on the frame. A first primary winding N1, a second primary winding N2 and a secondary winding N3 are wound sequentially on the frame. The secondary winding N3 is wound with insulated wire. The frame extends to provide a widened portion. The widened portion has a first pin that is fixed to the wire of the secondary winding N3.

[0006] As described above, the transformer facilitates automated production. The core body includes a first core and a second core, with an air gap formed between the first core and the second core. The frame is provided with pin PIN1 and pin PIN5, and the air gap is located on the side between pin PIN1 and pin PIN5.

[0007] As described above, for a transformer that facilitates automated production, before the secondary winding N3 is wound, anti-folding tape is attached to the sides of pins PIN1 to PIN5, and the anti-folding tape isolates the secondary winding N3 from the first primary winding N1 and the second primary winding N2.

[0008] As described above, for a transformer designed for automated production, the distance of the widened portion is d, where d >= 6 mm.

[0009] As described above, for a transformer that facilitates automated production, the first primary winding N1 starts at the same-name end of the first primary winding N1 and ends at the opposite-name end of the first primary winding N1. The first primary winding N1 is made of a single wire tightly wound in three layers. The frame is provided with a pin PIN2. The extension end of the wire of the second primary winding N1 is wound and fixed on the pin PIN1 and the pin PIN2.

[0010] As described above, in a transformer designed for automated production, the second primary winding N2 starts at the same-name end of the second primary winding N2 and ends at the opposite-name end of the second primary winding N2. The second primary winding N2 is made by winding a single wire in one layer. The frame is provided with pin PIN4. The extension end of the wire of the second primary winding N2 is wound and fixed on pin PIN4 and pin PIN5.

[0011] As described above, in a transformer designed for automated production, the secondary winding N3 starts at the opposite end of the secondary winding N3 and ends at the same end of the secondary winding N3. The secondary winding N3 is made of a single insulated wire tightly wound in one layer. The frame is also provided with a pin PIN8. The extended end of the insulated wire of the secondary winding N3 is wound and fixed on the pin PIN8 and the first pin.

[0012] As described above, for transformers designed for automated production, the return line of the first primary winding N1 is connected to a right-angle isolation.

[0013] As described above, for a transformer that facilitates automated production, an insulating layer is provided between the first primary winding N1 and the second primary winding N2, between the second primary winding N2 and the secondary winding N3, and on the outer periphery of the secondary winding N3. The insulating layer is a three-layer insulating tape.

[0014] As described above, for transformers designed for automated production, the conductors of both the first primary winding N1 and the second primary winding N2 are enameled wires.

[0015] Compared with existing technologies, the beneficial effects of this technical solution are as follows:

[0016] With the structure of this invention, the secondary winding N3 is wound with insulated wire, and the frame extends with a widened portion, on which pins are provided for fixing to the insulated wire of the secondary winding N3. The widened portion on the frame ensures sufficient safety distance to prevent transformer breakdown. Furthermore, the use of insulated wire for the secondary winding N3 eliminates the need for bushing, facilitating automated transformer production and increasing production efficiency.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a side view of the product structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the winding structure of this utility model;

[0021] Figure 3 This is the electrical polarity schematic diagram of this utility model;

[0022] Figure 4 This is a bottom view of the product structure of this utility model;

[0023] Figure 5 This is a front view of the product structure of this utility model. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1 to 5 The transformer shown is designed for automated production and includes a frame 1 and a core body 2 fixed to the frame 1. A first primary winding N1, a second primary winding N2, and a secondary winding N3 are sequentially wound on the frame 1. The secondary winding N3 is wound with insulated wire. The frame 1 extends with a widened portion 4, which has a pin fixed to the insulated wire of the secondary winding N3. Because the secondary winding N3 is wound with insulated wire, and the frame 1 extends with a widened portion 4, which has a first pin 5 fixed to the insulated wire of the secondary winding N3, sufficient safety distance is ensured by the widened portion 4 on the frame 1 to prevent transformer breakdown. Simultaneously, the use of insulated wire for the secondary winding N3 eliminates the need for bushing, facilitating automated transformer production and increasing production efficiency. This first pin 5 is the same as pin 7 in the transformer.

[0026] As a specific implementation and not a limitation, to prevent magnetic saturation, the magnetic core body 2 is provided with an air gap, which is located on the edge of pins PIN1 to PIN5. The magnetic core body 2 includes a first magnetic core and a second magnetic core, and the gap between the first magnetic core and the second magnetic core is located near pins PIN1 to PIN5, forming an air gap. Alternatively, a shim can be placed between the first and second magnetic cores. The shim needs to be made of a non-magnetic material, such as polyimide, nylon, or aluminum, to prevent the formation of bypass magnetic flux by magnetic materials. The shim also needs to be fixed with adhesive or similar materials to prevent vibration from causing changes in the air gap and instability.

[0027] Furthermore, before winding the secondary winding N3, a piece of folded tape (8.8mm wide * 20mm long) is attached to the edges of pins PIN1 to PIN5, and this tape isolates the secondary winding N3 from the first primary winding N1 and the second primary winding N2. Before winding the secondary winding N3, a piece of folded tape (8.8mm wide * 20mm long) is attached to the edges of pins PIN1 to PIN5, and this tape covers the first primary winding N1 and the second secondary winding N2 to ensure that the insulating wire of the secondary winding N3 is completely isolated from the first primary winding N1 and the secondary winding N2 during winding. After the secondary winding N3 is wound, the folded tape is folded back and wraps around the insulating tape.

[0028] As a specific implementation and not a limitation, to prevent transformer breakdown, the distance of the widened portion 4 is d, where d>=6mm. Because the distance d>=6mm in the widened portion 4 increases safety, it isolates the secondary winding N3 from external devices more effectively, thereby enabling it to withstand higher voltage.

[0029] As a specific implementation and not a limitation, the first primary winding N1 starts at its corresponding end and ends at its opposite end. The first primary winding N1 is made of a single conductor wound in three layers. The extended ends of the conductor of the first primary winding N1 are wound and fixed to pins PIN1 and PIN2. In this embodiment, the corresponding end of the first primary winding N1 is pin PIN2, and the opposite end is pin PIN1. The conductor of the first primary winding N1 is enameled wire with a diameter of 2UEW φ0.15mmQA, wound for 142TS.

[0030] Furthermore, the second primary winding N2 starts at its corresponding end and ends at its opposite end. The second primary winding N2 is made by winding a single conductor in one layer. The extended ends of the conductor in the second primary winding N2 are wound and fixed onto pins PIN4 and PIN5. In this embodiment, the corresponding end of the second primary winding N2 is pin PIN5, and the opposite end is pin PIN4. The conductor of the second primary winding N2 is enameled wire with a diameter of 2UEW φ0.15mmQA, wound for 28TS.

[0031] As a specific implementation and not a limitation, the secondary winding N3 starts at the opposite-named end and ends at the same-named end. The secondary winding N3 is made by tightly winding a single conductor in one layer, and the extended ends of the conductor of the secondary winding N3 are wound and fixed to pins PIN8 and PIN7. In this embodiment, the same-named end of the secondary winding N3 is pin PIN8, and the opposite-named end is PIN7. The conductor of the secondary winding N3 is insulated wire with a diameter of φ0.55mm TIW-B, and is made by winding 10TS.

[0032] During the winding of all windings, care should be taken to ensure that the conductors are taut and flat, and that the enameled wire layer and insulation layer are not detached or damaged. During winding, there should be no delamination, overlap, or other defects. The top of the finished coil should be flush with the bobbin. When winding the first primary winding N1 and the second primary winding N2, pins PIN1 to PIN5 should face outwards from the machine, and the winding should be clockwise. When winding the secondary winding N3, the winding direction is reversed after passing through the bobbin.

[0033] Furthermore, for electrical isolation, the return line of the first primary winding N1 is connected at a right angle for isolation.

[0034] As a specific implementation and not a limitation, in order to provide insulation between the windings, an insulating layer 3 is provided between the first primary winding N1 and the second primary winding N2, between the second primary winding N2 and the secondary winding N3, and on the outer periphery of the secondary winding N3. The insulating layer 3 is a three-layer insulating tape. In this embodiment, the insulating tape is an 8.8 / 5mm light yellow tape, and the insulating tape is wound 3TS.

[0035] In this embodiment, the magnetic core uses an EE16.8 / 5 1.9mH±3% 142TS PC95 core, and the air gap of the core is installed near the edge of pins PIN1 to PIN5, which is insulated by wrapping it with three layers of 5mm insulating tape. The frame uses an EE1616 horizontal widened 5+4 core with a row spacing of 10.5mm, a pin pitch of 3.2mm, and a clearance of 3.6.9mm. The pin length, measured from the bottom, is 3.2+ / -0.3mm. After the transformer is manufactured, the finished product needs to be vacuum impregnated with insulating varnish and dried for 1.5-2 hours at a temperature of 110°C. After drying, the label is affixed to the edge of pins PIN1 to PIN5 on the front side of the finished product.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A transformer suitable for automated production, comprising a frame (1) and a magnetic core body (2) fixed to the frame (1), characterized in that, The frame (1) is wound with a first primary winding N1, a second primary winding N2 and a secondary winding N3 in sequence. The secondary winding N3 is wound with insulated wire. The frame (1) extends with a widening part (4). The widening part (4) is provided with a first pin (5) fixed to the insulated wire of the secondary winding N3.

2. The transformer for automated production according to claim 1, characterized in that, The magnetic core body (2) includes a first magnetic core and a second magnetic core, with an air gap formed between the first magnetic core and the second magnetic core. The frame (1) is provided with pin PIN1 and pin PIN5, and the air gap is located on the side between pin PIN1 and pin PIN5.

3. The transformer for automated production according to claim 2, characterized in that, Before the secondary winding N3 is wound, the pins PIN1 to PIN5 are covered with reverse-folded adhesive tape, which isolates the secondary winding N3 from the first primary winding N1 and the second primary winding N2.

4. The transformer for automated production according to claim 1, characterized in that, The distance of the widened portion (4) is d, where d>=6mm.

5. The transformer for automated production according to claim 2, characterized in that, The first primary winding N1 starts at the same-name end of the first primary winding N1 and ends at the opposite-name end of the first primary winding N1. The first primary winding N1 is made of a single wire tightly wound in three layers. The skeleton (1) is provided with pin PIN2. The extension end of the wire of the first primary winding N1 is wound and fixed on the pin PIN1 and the pin PIN2.

6. The transformer for automated production according to claim 2, characterized in that, The second primary winding N2 starts at the same end of the second primary winding N2 and ends at the opposite end of the second primary winding N2. The second primary winding N2 is made by winding a single wire in one layer. The skeleton (1) is provided with pin PIN4. The extension end of the wire of the second primary winding N2 is wound and fixed on pin PIN4 and pin PIN5.

7. The transformer according to claim 1, which facilitates automated production, is characterized in that, The secondary winding N3 starts at the opposite end of the secondary winding N3 and ends at the same end of the secondary winding N3. The secondary winding N3 is made of a single insulated wire tightly wound in one layer. The frame (1) is also provided with a pin PIN8. The extension end of the insulated wire of the secondary winding N3 is wound and fixed on the first pin (5) and the pin PIN8.

8. The transformer according to claim 5, which is convenient for automated production, is characterized in that, The return line of the first primary winding N1 is connected to a right-angle isolation.

9. The transformer for automated production according to claim 1, characterized in that, An insulating layer (3) is provided between the first primary winding N1 and the second primary winding N2, between the second primary winding N2 and the secondary winding N3, and on the outer periphery of the secondary winding N3. The insulating layer (3) is a three-layer insulating tape.

10. The transformer for automated production according to claim 1, characterized in that, The conductors of the first primary winding N1 and the second primary winding N2 are both made of enameled wire.

Images