A novel three-groove plastic skeleton

Abstract

This utility model relates to the field of transformer technology. The novel three-slot plastic frame has coils and magnetic cores mounted on it. The coils are wound around the frame, and the magnetic cores are secured inside the frame. The frame is integrally formed, with a connecting post in the middle and connecting plates at both ends. Two partitions on the connecting post divide the frame into three winding slots. The partitions are 5-6mm thick. Outwardly protruding support blocks are provided on the outer sides of the connecting plates, connecting to the transformer's base plate. Notches are provided on one side of each partition. By setting two partitions on the connecting post, dividing the frame into three winding slots, the primary and secondary coils are wound on the slots respectively, ensuring stable leakage inductance performance of the transformer. The support blocks on the outer sides of the connecting plates serve to fix the pins and provide support. Furthermore, using this three-slot plastic frame can meet the requirements of a 7uH transformer without the need for a resonant inductor, saving material costs and reducing the transformer's size.

Description

Technical Field

[0001] This utility model relates to the field of transformer manufacturing technology, and in particular to a novel three-slot plastic frame. Background Technology

[0002] Currently, the coils wound on the existing transformer frame use a combination of three-layer insulated wire discs and flat wire coils. This structure alone cannot meet the customer's requirement of 7uH leakage inductance, necessitating the addition of a resonant inductor to fulfill the 7uH requirement. Furthermore, the frame used in this type of transformer has the following drawbacks: a) high raw material costs; b) high processing costs; c) large product size. Therefore, a new type of three-slot plastic frame is urgently needed to solve these problems. Utility Model Content

[0003] The purpose of this invention is to provide a novel three-groove plastic skeleton to solve the technical problems of existing plastic skeletons, such as the need to add a resonant inductor, high raw material cost, high processing cost, and large size.

[0004] This utility model discloses a novel three-slot plastic frame, comprising a frame on which coils and magnetic cores are mounted. The coils are wound around the periphery of the frame, and the magnetic cores are secured inside the frame. The frame is integrally formed, with a connecting post in the middle and connecting plates at both ends. The connecting post has two partitions that divide the frame into three winding slots. The partitions are 5-6 mm thick. The outer side of the connecting plates has outwardly protruding support blocks that are connected to the base plate of the transformer. Both partitions have notches on one side.

[0005] Preferably, the end of the support block is provided with a protrusion.

[0006] Preferably, the inner sides of the two partitions are provided with triangular notches.

[0007] Preferably, the coil includes a primary coil and a secondary coil. The primary coil is wound between two partitions, and the secondary coil is wound on the outside of the two partitions. The two secondary coils are connected by a bridging wire during winding, and the bridging wire is placed on the notch.

[0008] Preferably, the input and output terminals of the primary coil are placed inside the notch and extend to the base plate, and the input and output terminals of the secondary coil extend to the base plate.

[0009] Preferably, the outer side of the connecting plate is provided with a clamping plate for clamping the magnetic core.

[0010] Preferably, the skeleton is made of plastic material.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This novel three-slot plastic frame features a connecting post in the middle and connecting plates at both ends. Two partitions on the connecting post divide the frame into three winding slots. Outwardly protruding support blocks are located on the outer sides of the connecting plates. Specifically, the connecting post has a hollow structure in the middle, into which a magnetic core is inserted and connected. Two partitions, 5-6mm thick, surround the connecting post, stabilizing the transformer's leakage inductance performance and dividing the frame into three winding slots for winding the primary and secondary coils. Connecting plates at both ends of the frame have support blocks on their outer sides, which connect to the transformer's base plate, fixing the pins and supporting the product. Notches on one side of the two partitions facilitate wire passage during secondary coil winding without occupying winding space, allowing for a sufficient number of turns. Furthermore, using this three-slot plastic frame meets the requirements of a 7uH transformer without requiring a resonant inductor, saving material costs and reducing the transformer's size. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0014] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of a novel three-groove plastic skeleton according to this utility model;

[0015] Figure 2 This is a three-dimensional structural schematic diagram from another perspective of an embodiment of a novel three-groove plastic skeleton according to this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of a transformer with a novel three-slot plastic frame according to the present invention in an application state;

[0017] Figure 4 This is a structural schematic diagram of a transformer with a novel three-slot plastic frame, as described in this utility model, from another perspective.

[0018] Figure 5 for Figure 4 A schematic diagram of its split structure.

[0019] In the diagram: 1. Skeleton; 11. Connecting post; 12. Connecting plate; 121. Clamping plate; 13. Partition; 131. Notch; 132. Missing block; 14. Winding groove; 15. Support block; 151. Protrusion; 2. Coil; 21. Primary coil; 22. Secondary coil; 23. Bridge wire; 3. Magnetic core; 4. Base plate. Detailed Implementation

[0020] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0021] like Figure 1-5 As shown, this utility model discloses a novel three-slot plastic frame. The frame 1 is equipped with a coil 2 and a magnetic core 3. The coil 2 is wound around the periphery of the frame 1, and the magnetic core 3 is clamped inside the frame 1. The frame 1 is integrally formed. A connecting post 11 is provided in the middle of the frame 1, and connecting plates 12 are provided at both ends. Two partitions 13 are provided on the connecting post 11, dividing the frame 1 into three winding slots 14. The thickness of the partitions is 5-6mm. An outwardly protruding support block 15 is provided on the outer side of the connecting plate 12. The support block 15 is connected to the base plate 4 of the transformer. A notch 131 is provided on one side of each of the two partitions 13.

[0022] This utility model discloses a novel three-slot plastic frame, which mainly serves to fix the internal winding wires of a transformer and support the transformer body. The frame 1 has a connecting post 11 in the middle and connecting plates 12 at both ends. Two partitions 13 are provided on the connecting post 11, dividing the frame 1 into three winding slots 14. Outwardly protruding support blocks 15 are provided on the outer side of the connecting plates 12. Specifically, the connecting post 11 has a hollow structure in the middle, and the magnetic core 3 is inserted into the connecting post 11 and connected to it. Two partitions 13 are arranged around the connecting post 11, with a thickness of 5-6mm, preferably 5.25mm. The partitions can stabilize the leakage inductance performance of the transformer and support the frame. The frame 1 is divided into three winding slots 14, which are used to wind the primary coil and the secondary coil. The two ends of the frame 1 are provided with connecting plates 12, and the outer side of the connecting plates 12 is provided with support blocks 15. The support blocks 15 are connected to the base plate 4 of the transformer and serve to fix the pins and support the product. By providing notches 131 on one side of the two partitions 13, one side of the notches 131 is a plane and the other side is a slope, it is ensured that when winding the secondary coil, it is convenient to pass the wire and does not occupy the space of the winding area, so as to facilitate winding a sufficient number of turns.

[0023] In a preferred embodiment, refer to Figure 1-2 The support block 15 of the three-slot plastic frame has a protrusion 151 at its end. The inner side of the two partitions 13 has a triangular notch 132. The length and width of the protrusion 151 are smaller than the length and width of the support block 15. When installed with the base plate 4, the protrusion 151 is inserted into the mounting hole of the base plate 4, which can limit the front-back and left-right displacement of the base plate and play a fixing role. By setting the triangular notch 132 on the opposite side of the notch 131, that is, on the inner side of the two partitions 13, the position of the primary coil inlet and outlet is provided, ensuring that the inlet and outlet wires have a certain amount of room to move when installed into the base plate, making assembly easier.

[0024] In a preferred embodiment, refer to Figure 3-5 The transformer's coil 2 includes a primary coil 21 and a secondary coil 22. The primary coil 21 is wound between two partitions 13, and the secondary coil 22 is wound on the outside of the two partitions 13. During winding, the secondary coil 22 is connected by a bridging wire 23, which is placed on a notch 131. The input and output ends of the primary coil 21 are placed within the notch 132 and extend to the base plate 4, as do the input and output ends of the secondary coil 22. The primary coil 21 and secondary coil 22 are wound in three winding slots 14, with the primary coil 21 wound in the middle and the secondary coils 22 wound on both sides, connected by the bridging wire 23. This ensures that the secondary coils 22 on both sides are connected as a single coil, guaranteeing consistent leakage inductance. Furthermore, using the three-slot plastic frame of this application can meet the 7UH requirement of the transformer without the need for a resonant inductor, saving material costs and reducing the transformer's size.

[0025] In a preferred embodiment, refer to Figure 3-5 The connecting plate 12 of the three-slot plastic skeleton has a clamping plate 121 on its outer side for holding the magnetic core. The skeleton 1 is made of plastic material. The inner side of the clamping plate 121 has an arc-shaped structure and connects with the magnetic core 3. In addition, the skeleton 1 is integrally molded from plastic material, which achieves the effects of improving skeleton production efficiency, reducing costs, and improving product structural stability.

[0026] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A novel three-groove plastic frame, wherein a coil and a magnetic core are mounted on the frame, the coil is wound around the periphery of the frame, and the magnetic core is secured inside the frame, characterized in that: The frame is integrally formed, with a connecting column in the middle and connecting plates at both ends. The connecting column has two partitions that divide the frame into three winding slots. The thickness of the partitions is 5-6mm. The outer side of the connecting plates has outwardly protruding support blocks that are connected to the base plate of the transformer. Both partitions have notches on one side.

2. The novel three-groove plastic skeleton as described in claim 1, characterized in that, The end of the support block is provided with a protrusion.

3. The novel three-groove plastic skeleton as described in claim 1, characterized in that, The inner sides of both partitions are provided with triangular notches.

4. The novel three-groove plastic skeleton as described in claim 1, characterized in that, The coil includes a primary coil and a secondary coil. The primary coil is wound between two partitions, and the secondary coil is wound on the outside of the two partitions. The two secondary coils are connected by a bridging wire during winding, and the bridging wire is placed on the notch.

5. The novel three-groove plastic skeleton as described in claim 4, characterized in that, The input and output terminals of the primary coil are placed inside the notch and extend to the base plate, and the input and output terminals of the secondary coil also extend to the base plate.

6. The novel three-groove plastic skeleton as described in claim 1, characterized in that, The outer side of the connecting plate is provided with a clamping plate for holding the magnetic core.

7. The novel three-groove plastic skeleton as described in claim 1, characterized in that, The skeleton is made of plastic material.

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