Transformer

Abstract

The utility model discloses a transformer, belongs to the field of electrical equipment, and is used for solving the problems of how to improve the insulating property and reduce the cost. The transformer comprises an insulating shell and a body framework, the body framework is arranged in the insulating shell and provided with a primary wiring part, a secondary wiring part and a lead boss, the primary wiring part and the secondary wiring part are located at the two ends of the body framework in the width direction respectively, and the primary wiring part and the lead boss are located at the two ends of the body framework in the length direction respectively. The primary wiring part and the secondary wiring part are provided with wire passing grooves for accommodating wires, and the wire passing grooves are internally provided with inclined surfaces inclined to the lead-out direction of the wires; the insulating shell is provided with a primary wiring part, a secondary wiring part and a receding opening of the lead boss, blocking tables are arranged on the edge of the receding opening, and the blocking tables are located between the body framework and the primary wiring part and between the body framework and the secondary wiring part.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electrical equipment, in particular to a transformer. BACKGROUND

[0002] The switch power transformer on the current market generally adopts a single structure design, which has a safety distance problem. Specifically, the safety distance between the primary and secondary of the transformer formed by the winding coil, and the safety distance between the transformer body and the surrounding components, often cannot meet the specified standard. In order to make up for this defect, manufacturers usually use the way of wrapping with adhesive tape or dispensing glue to isolate. However, this approach not only increases the labor cost and raw material consumption, but also significantly improves the complexity of the production process, thereby leading to the rise of product cost price.

[0003] In addition, the single structure design combined with the wrapping of insulating tape also exposes obvious drawbacks in use. When affected by stress or external environmental factors, the insulating tape is prone to breakage, resulting in safety isolation failure. Once this happens, the transformer often needs to be replaced as a whole, thereby increasing the cost of maintenance and replacement.

[0004] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. CONTENT OF THE UTILITY MODEL

[0005] (1) Technical problem solved

[0006] The embodiment of the present application provides a transformer, which can solve the problem of how to improve the insulation performance and reduce the cost in the prior art.

[0007] (2) Technical scheme

[0008] To solve the above technical problems, the present application provides the following technical scheme:

[0009] A transformer is provided, which comprises an insulating shell and a body framework.

[0010] The body framework is arranged inside the insulating shell and is provided with a primary winding part, a secondary winding part and a lead protrusion, the primary winding part and the secondary winding part are respectively located at both ends of the width direction of the body framework, the primary winding part and the lead protrusion are respectively located at both ends of the length direction of the body framework, the primary winding part and the secondary winding part are provided with wire accommodating grooves, and the wire accommodating grooves are provided with inclined surfaces inclined to the lead-out direction of the wires.

[0011] The insulating shell is provided with the primary wiring part, the secondary wiring part and the lead protrusion, and is provided with a blocking table at the edge of the accommodation opening, the blocking table is located between the body frame and the primary wiring part, and between the body frame and the secondary wiring part.

[0012] In some embodiments, the insulating shell is provided with a blocking edge at the edge of the accommodation opening, the blocking edge extends to the inside of the insulating shell.

[0013] In some embodiments, a clamping groove is formed between the blocking edge and the blocking table, and the body frame is provided with a clamping protrusion between the primary wiring part and the secondary wiring part, and the clamping protrusion is matched with the clamping groove.

[0014] In some embodiments, the clamping groove and the clamping protrusion are both provided with two, the clamping grooves and the clamping protrusions are arranged in a spaced manner, and the clamping groove and the clamping protrusion are matched in a one-to-one manner.

[0015] In some embodiments, the outer side of the clamping protrusion and the inner side of the clamping groove are provided with a guide inclined surface for installing a guide.

[0016] In some embodiments, the middle part of the body frame is provided with a winding width for winding a line, the lead protrusion is provided with two, which are located at opposite positions of the primary wiring part and the secondary wiring part respectively, and are respectively provided with a primary wire passing hole 50 and a secondary wire passing hole 50 for the line on the winding width to pass through.

[0017] In some embodiments, the wire passing groove is provided with a plane extending along the length direction of the body frame, and the inclined surface is inclined to the plane.

[0018] (Three) beneficial effects

[0019] Compared with the prior art, the technical scheme provided by the embodiments of the present application has at least the following beneficial effects:

[0020] The transformer of the present application sets the primary connection part and the secondary connection part at two ends of the body framework width direction respectively, thus increasing the creepage distance and improving the insulation strength. Meanwhile, the primary connection part and the secondary connection part are provided with wire accommodating grooves for accommodating the wires, and the wire accommodating grooves are provided with inclined surfaces, while the lead protrusions are provided with wire accommodating holes for accommodating the wires, so that the wire entry and exit hanging feet are not easy to cross and overlap during the winding process, effectively avoiding the problems of poor withstand voltage and insufficient safety distance. What is equally important is that the insulation shell separates the winding on the body framework from the magnetic core group from the outside, improves the insulation performance, and sets a blocking table between the body framework and the primary connection part and between the body framework and the secondary connection part, effectively extending the safety creepage distance from the primary connection part and the magnetic core to the secondary connection part, improving the withstand voltage isolation, solving the disadvantages of isolation by wrapping adhesive tape in the prior art, saving adhesive tape materials and adhesive tape wrapping time, reducing product cost and volume, and improving product appearance. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0022] Figure 1 is a front perspective view of the transformer in the embodiment of the present application;

[0023] Figure 2 is an exploded view of the transformer in the embodiment of the present application from the front;

[0024] Figure 3 is a back perspective view of the transformer in the embodiment of the present application;

[0025] Figure 4 is an exploded view of the transformer in the embodiment of the present application from the back;

[0026] Figure 5 is a front view of the body framework in the embodiment of the present application.

[0027] Reference signs: insulation shell 1, body framework 2, primary connection part 3, secondary connection part 4, lead protrusion 5, wire accommodating groove 6, accommodation opening 11, blocking table 12, blocking edge 13, clamping groove 14, clamping protrusion 21, winding width 22, wire accommodating hole 50, inclined surface 61, flat surface 62, width direction W, length direction L.

[0028] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0030] 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, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] Currently, most switching power supply transformers on the market have a single-unit structure. The safety distance between the primary and secondary windings, formed by the wound coils, and the safety distance between the transformer body and surrounding components do not meet standards. Isolation can only be achieved by wrapping with tape or applying adhesive, which significantly increases labor costs and raw material usage. This not only increases the difficulty of the manufacturing process but also raises the corresponding cost. In terms of usage, the single-unit design, coupled with the outer wrapping of insulating tape, makes them susceptible to damage under stress or external environmental influences. This necessitates complete replacement, which is also costly.

[0032] To address the aforementioned technical problems, this embodiment provides a transformer. (See also...) Figures 1 to 5 As shown, Figure 1 This is a front perspective view of the transformer in the embodiments of this application. Figure 2 This is an exploded view of the transformer in an embodiment of this application. Figure 3 This is a back perspective view of the transformer in an embodiment of this application. Figure 4 This is a back exploded view of the transformer in an embodiment of this application. Figure 5 This is the front view of the body skeleton in the embodiments of this application.

[0033] The transformer provided in this embodiment includes: an insulating outer shell 1 and a body frame 2.

[0034] The main body frame 2 is located inside the insulating shell 1, and is provided with a primary wiring section 3, a secondary wiring section 4, and a lead wire boss 5, such as... Figure 5As shown, the primary wiring section 3 and the secondary wiring section 4 are located at both ends of the width direction W of the main body frame 2, and the primary wiring section 3 and the lead-in boss 5 are located at both ends of the length direction L of the main body frame 2. This layout facilitates the introduction or exit of wires, ensures physical isolation between the primary and secondary circuits, thereby enhancing electrical safety. It also provides convenience for the connection and installation of the transformer. On the main body frame 2, as shown... Figure 3 As shown, the primary wiring section 3 and the secondary wiring section 4 are provided with wire guide grooves 6 for accommodating wires. The wire guide grooves 6 have inclined surfaces 61 that are inclined to the direction of wire lead-out. The wire guide grooves 6 not only provide guidance and fixation for the wires, but also further optimize the direction of wire lead-out through the inclined surfaces 61 inside, making the wire lead-out smoother and making it less likely for the wires to cross or overlap during the winding process. The lead-out boss 5 is provided with wire guide holes 50 for leading out the wires. The wires are guided and limited through the wire guide holes 50, which helps to reduce the degree of wire messiness.

[0035] The insulating housing 1 has clearance openings 11 for the primary wiring section 3, the secondary wiring section 4, and the lead boss 5. These clearance openings 11 provide sufficient space for these critical components, ensuring their proper functioning and connection. The insulating housing 1 has a stop 12 at the edge of the clearance opening 11. The stop 12 is located between the main frame 2 and the primary wiring section 3, and between the main frame 2 and the secondary wiring section 4. Its main function is to prevent conductors or other components from accidentally contacting the main frame 2, and to extend the safe creepage distance from the primary wiring section 3 and the magnetic core to the secondary wiring section 4, thereby further improving the electrical safety and reliability of the transformer.

[0036] The transformer in the above technical solution has the primary connection part 3 and the secondary connection part 4 respectively located at both ends of the width direction of the main body frame 2, thereby increasing the creepage distance and improving the insulation strength. At the same time, the primary connection part 3 and the secondary connection part 4 are provided with wire passage grooves 6 for accommodating wires. The wire passage grooves 6 have inclined surfaces 61, which makes it difficult for the wires to cross or overlap during the winding process, effectively avoiding the problems of poor withstand voltage and insufficient safety distance. The wires on the main body frame 2 can also be led out through the wire passage holes of the lead boss 5, making the wiring more regular. Equally important, the insulating shell 1 isolates the windings and core assembly on the main body frame 2 from the outside world, improving insulation performance. A baffle 12 is provided between the main body frame 2 and the primary wiring section 3, and between the main body frame 2 and the secondary wiring section 4. The baffle 12 effectively extends the safe creepage distance from the primary wiring section 3 and the core to the secondary wiring section 4, improving withstand voltage isolation. At the same time, it solves the drawback of using tape for isolation in the prior art, saving tape material and tape wrapping time, reducing product cost. Since no tape is needed, the product volume is also reduced and the product appearance is improved.

[0037] In some embodiments, seeFigure 3 and Figure 4 As shown, the insulating housing 1 has a retaining edge 13 at the edge of the relief opening 11, which extends inward into the insulating housing 1. The retaining edge 13 forms a barrier, increasing the creepage distance between the inside and outside of the insulating housing 1, and also increasing the rigidity of the insulating housing 1, thus improving its resistance to external impacts. At the same time, the retaining edge 13 can also prevent the conductor from falling off the relief opening 11 during the connection process, ensuring the stable and reliable electrical connection of the transformer.

[0038] Further, see Figure 3 and Figure 4 As shown, a groove 14 is formed between the retaining edge 13 and the retaining platform 12. The main body frame 2 has a retaining protrusion 21 between the primary wiring portion 3 and the secondary wiring portion 4, which engages with the groove 14. During assembly, the main body frame 2 is inserted into the insulating shell 1, with the retaining protrusion 21 aligned and inserted into the groove 14. Because the shape and size of the retaining protrusion 21 and the groove 14 match, a tight fit is formed, ensuring stable installation of the main body frame 2 within the insulating shell 1. This engagement of the retaining protrusion 21 and the groove 14 securely fixes the main body frame 2 within the insulating shell 1, preventing loosening or detachment due to vibration or impact. Simultaneously, this fixing method simplifies the transformer assembly process and improves production efficiency. Equally important, the retaining protrusion 21 also increases the creepage distance between the primary wiring portion 3 and the secondary wiring portion 4, thereby improving the product's insulation performance.

[0039] For example, see Figure 2 and Figure 4 As shown, there are two slots 14 and two protrusions 21, spaced apart from each other, with each slot 14 and protrusion 21 engaging in a one-to-one manner. By increasing the number of slots 14 and protrusions 21, the stability of the main body frame 2 within the insulating shell 1 is further enhanced. Even under external force, the main body frame 2 can maintain a stable position and will not fall off or loosen due to vibration or impact. At the same time, the two spaced protrusions 21 can further increase the creepage distance between the primary wiring part 3 and the secondary wiring part 4, improving the insulation performance of the product.

[0040] For easier installation of the 21-pin connector, please refer to [link / reference]. Figure 2 and Figure 4 As shown, the outer side of the latch protrusion 21 and the inner side of the latch groove 14 are provided with guide slopes for installation guidance. The guide slopes can be arc surfaces or V-shaped.

[0041] In some embodiments, see Figure 3 and Figure 4As shown, the main body frame 2 has a lead-in boss 5 at the end opposite to the primary wiring section 3, and the lead-in boss 5 extends outward. The presence of the lead-in boss 5 can change the electric field distribution inside the transformer, reducing electric field concentration and the occurrence of discharge phenomena. At the same time, the lead-in boss 5 can also serve as part of the electrical shielding, reducing the interference of external electromagnetic fields on the internal circuits of the transformer.

[0042] Further, see Figure 3 and Figure 4 As shown, the main body frame 2 has a winding width 22 for winding the circuit in the middle, and the winding width 22 is cylindrical. Two lead bosses 5 are provided, located opposite to the primary wiring section 3 and the secondary wiring section 4, respectively, and each has a primary wire guide hole and a secondary wire guide hole for the wires on the winding width 22 to pass through. Exemplarily, the primary wire guide hole and the secondary wire guide hole are formed by two protrusions spaced apart on the inner side of the lead boss. This arrangement allows the primary and secondary wire guide holes to limit and guide the circuit, improving the regularity and stability of the circuit layout.

[0043] In one embodiment of the above-mentioned cable tray 6, see [reference]. Figure 3 As shown, the cable tray 6 has a plane 62 extending along the length of the main frame 2, and an inclined surface 61 inclined to the plane 62. During the wire installation process, the wire is first placed on the inclined surface 61 and then slides into the cable tray 6 along the plane 62. Due to the presence of the inclined surface 61, the wire can more easily find the correct position and remain stable. Through the design of the plane 62 and the inclined surface 61, the installation and fixing process of the wire becomes simpler and safer. At the same time, this design can also reduce the loosening or falling off of the wire under vibration or impact, thereby improving the electrical safety and reliability of the transformer.

[0044] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A transformer, characterized in that, include: Insulating outer shell and main frame; The main body frame is located inside the insulating shell and has a primary wiring section, a secondary wiring section, and a lead-in boss. The primary wiring section and the secondary wiring section are located at both ends of the width direction of the main body frame, and the primary wiring section and the lead-in boss are located at both ends of the length direction of the main body frame. The primary wiring section and the secondary wiring section have a wire-passing groove for accommodating the wire. The wire-passing groove has an inclined surface that is inclined to the direction of wire lead-out. The lead-in boss has a wire-passing hole for accommodating the wire. The insulating housing has clearance openings for the primary wiring section, the secondary wiring section, and the lead boss, and a baffle is provided at the edge of the clearance opening. The baffle is located between the main body frame and the primary wiring section, and between the main body frame and the secondary wiring section.

2. The transformer according to claim 1, characterized in that, The insulating shell has a retaining edge at the edge of the relief opening, and the retaining edge extends into the insulating shell.

3. The transformer according to claim 2, characterized in that, A groove is formed between the baffle and the baffle platform. The main body frame has a protrusion between the primary wiring part and the secondary wiring part, and the protrusion engages with the groove.

4. The transformer according to claim 3, characterized in that, The card slot and the card protrusion are provided in pairs, and the card slot and the card protrusion are spaced apart, and the card slot and the card protrusion are matched one-to-one.

5. The transformer according to claim 4, characterized in that, The outer side of the card protrusion and the inner side of the card slot are provided with guide slopes for installation guidance.

6. The transformer according to claim 1, characterized in that, The main body frame has a winding width for winding the wire in the middle. There are two lead bosses, which are located at the opposite positions of the primary wiring part and the secondary wiring part, and are respectively provided with primary wire passage holes and secondary wire passage holes for the wire on the winding width to pass through.

7. The transformer according to claim 1, characterized in that, The cable groove has a plane extending along the length of the main body skeleton, and the inclined surface is inclined to the plane.

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