A transformer core structure

Abstract

The utility model discloses a transformer framework structure, including winding post, the winding post bottom front and rear both ends fixedly connected with the pin mounting bracket, the winding post top surface is equipped with fixed hole, pin mounting bracket outer wall front and rear both ends evenly arranged fixedly connected with a plurality of pins, the winding post outer wall is equipped with the iron core subassembly, the both ends of iron core subassembly fixedly connected with the elastic clamping plate for fixing iron core subassembly, the both ends of iron core subassembly fixedly connected with the elastic clamping plate for fixing iron core subassembly. The utility model discloses through the plug -in cooperation of iron core subassembly and winding post, and through the elastic clamping plate between winding post and iron core fixed, replaced the traditional fixed mode, has improved the production efficiency of transformer framework significantly.

Description

Technical Field

[0001] This utility model relates to the field of transformer frame technology, specifically a transformer frame structure. Background Technology

[0002] The transformer bobbin, also known as the transformer wire frame, is a major structural component of a transformer. It provides space for the copper wires to be wound, secures the magnetic core, and the slots within the bobbin provide a path for the wires during winding. Therefore, the bobbin plays an irreplaceable role.

[0003] Existing transformer frames use a modular structure for the winding posts and core. During the winding process, the winding posts are separately installed in the winding device to facilitate winding and prevent deformation or even damage to the frame. However, the installation of the winding posts and core in the current market is cumbersome, requiring multiple loose bolts for installation, which is time-consuming and labor-intensive, limiting the production efficiency of transformer frames. Therefore, a new design is needed to solve the above problems. Summary of the Invention

[0004] The purpose of this utility model is to provide a transformer frame structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a transformer frame structure, including a winding post, with pin mounting brackets fixedly connected to the front and rear ends of the bottom of the winding post, a fixing hole opened on the top surface of the winding post, and multiple pins evenly arranged and fixedly connected to the front and rear ends of the outer wall of the pin mounting bracket, a core assembly sleeved on the outer wall of the winding post, and elastic snap-fit ​​plates for fixing the core assembly fixedly snapped at both ends of the core assembly, the core assembly including an upper core and a lower core, a connecting post one fixedly connected to the middle of the bottom surface of the upper core, guide posts fixedly connected to both ends of the bottom surface of the upper core, a connecting post two fixedly connected to the top surface of the lower core at a position opposite to the connecting post one, a guide hole opened on the top surface of the lower core at a position opposite to the guide post, and a guide post inserted into the guide hole, the connecting post one and the connecting post two being inserted into the fixing hole from the upper and lower ends of the winding post respectively.

[0006] Preferably, the upper iron core has a first locking position on both sides of the top surface, and the lower iron core has a second locking position on the bottom surface opposite to the first locking position.

[0007] Preferably, the upper and lower ends of the elastic snap-fit ​​plate are respectively fixedly connected with snap-fit ​​plate one and snap-fit ​​plate two, and snap-fit ​​plate one and snap-fit ​​plate two are in contact with the surfaces of the first snap-fit ​​position and the second snap-fit ​​position respectively.

[0008] Preferably, both the first and second snap-fit ​​plates have bent portions fixedly connected to their surfaces, and the surfaces of the bent portions are in contact with the surfaces of the first and second snap-fit ​​positions.

[0009] Preferably, the bottom surface of the second snap-fit ​​plate is fixedly connected with a pin that is bent downwards for connection to the circuit board.

[0010] Preferably, the winding post and the pin mounting bracket are designed as an integrated structure.

[0011] Beneficial effects

[0012] Compared with existing technologies, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model replaces the traditional fixing method that relies on multiple loose bolts by using the insertion and cooperation of connecting column one and connecting column two with the fixing hole, and fixing the winding column and the iron core with the elastic snap plate. The installation of the winding column and the iron core assembly can be completed without additional tools, which greatly reduces the assembly steps, avoids the tedious operation of bolt disassembly and assembly, effectively shortens the assembly time, and significantly improves the production efficiency of transformer frame.

[0014] 2. In the core assembly, the guide post of the upper core and the guide hole of the lower core are precisely inserted, which can play a guiding and positioning role during the docking of the upper and lower cores, ensuring the accurate relative position of the upper and lower cores and avoiding misalignment. At the same time, the cooperation between the connecting post and the fixing hole further limits the assembly position of the winding post and the core assembly, improving the overall assembly accuracy of the transformer frame and reducing performance risks caused by assembly errors.

[0015] 3. The elastic snap-fit ​​plate is attached to the first snap-fit ​​position of the upper iron core and the second snap-fit ​​position of the lower iron core through snap-fit ​​plate one and snap-fit ​​plate two, respectively. The bent part on the surface of the snap-fit ​​plate can be tightly snapped into the snap-fit ​​position. The elastic force of the elastic snap-fit ​​plate firmly fixes the upper iron core and the lower iron core, effectively preventing the iron core assembly from loosening during use. At the same time, the fixed connection structure between the winding column and the pin mounting bracket further enhances the structural strength of the overall frame and improves the reliability of the transformer frame in long-term use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 For the present utility model Figure 1 A schematic diagram of the exploded structure;

[0018] The correspondence between the labels and component names in the attached figures is as follows:

[0019] 1. Winding post; 2. Pin mounting bracket; 3. Core assembly; 4. Flexible snap-fit ​​plate; 11. Fixing hole;

[0020] 21. Pin; 31. Upper iron core; 32. Lower iron core; 41. Fastening plate one; 42. Bending section; 43. Fastening plate two;

[0021] 44. Insert pin; 311. Connecting post one; 312. Guide post; 313. First locking position; 321. Connecting post two;

[0022] 322. Guide hole; 323. Second snap-fit ​​position. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "front," "rear," "inner," "outer," "vertical," and "horizontal," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] Example 1

[0026] like Figure 1-2 This is a schematic diagram of a preferred embodiment of the transformer frame structure of this utility model. In this embodiment, the transformer frame structure includes a winding post 1. The front and rear ends of the bottom of the winding post 1 are fixedly connected to pin mounting brackets 2 by integral injection molding, ensuring the integrity and mechanical strength of the structure. A circular fixing hole 11 is provided at the center of the top surface of the winding post 1.

[0027] The outer wall of the pin mounting bracket 2 has multiple pins 21 evenly arranged and fixedly connected on both the front and rear sides. These pins 21 are used for the circuit connection of the subsequent transformer.

[0028] In this embodiment, the core assembly 3 is sleeved on the outer wall of the winding post 1. The core assembly 3 consists of an upper core 31 and a lower core 32. Specifically, a cylindrical connecting post 311 is fixedly connected to the center of the bottom surface of the upper core 31, and two guide posts 312 are symmetrically fixedly connected to both ends of its bottom surface. A connecting post 321 is fixedly connected to the top surface of the lower core 32 at a position opposite to the connecting post 311, and two guide holes 322 are formed at positions opposite to the guide posts 312.

[0029] During assembly, the winding post 1 is placed on the lower iron core 32, and the connecting post 321 of the lower iron core 32 is inserted from below into the fixing hole 11 of the winding post 1. Then, the upper iron core 31 is closed, and its guide post 312 is precisely inserted into the guide hole 322 of the lower iron core 32, serving as a guide and initial positioning element. Simultaneously, the connecting post 311 of the upper iron core 31 is inserted from above into the same fixing hole 11, working together with the connecting post 321 to clamp and center the winding post 1.

[0030] To securely fasten the upper and lower iron cores together, elastic snap-fit ​​plates 4 are snapped onto both ends of the iron core assembly 3. A rectangular first snap-fit ​​position 313 is provided on each side of the top surface of the upper iron core 31, and a second snap-fit ​​position 323 is provided symmetrically on the bottom surface of the lower iron core 32.

[0031] In this embodiment, the upper and lower ends of the elastic snap-fit ​​plate 4 are bent inward to form snap-fit ​​plate one 41 and snap-fit ​​plate two 43, respectively. The surfaces of snap-fit ​​plate one 41 and snap-fit ​​plate two 43 are further stamped to form protruding bent portions 42. During installation, the elastic snap-fit ​​plate 4 is pressed into the iron core assembly 3 from the side. Utilizing its own elastic deformation, the upper snap-fit ​​plate one 41 and its bent portion 42 are tightly snapped into contact with the surface of the first snap-fit ​​position 313 of the upper iron core 31, while the lower snap-fit ​​plate two 43 and its bent portion 42 are tightly snapped into contact with the surface of the second snap-fit ​​position 323 of the lower iron core 32. Thus, the upper and lower iron cores are firmly locked together by elastic force, eliminating the need for traditional bolt fastening.

[0032] In addition, a downwardly bent pin 44 is fixedly connected to the center of the bottom surface of the second snap-fit ​​plate 43. This pin 44 can be used to directly plug and solder the entire transformer frame onto the PCB circuit board to achieve rapid installation.

[0033] Example 2

[0034] This embodiment is basically the same in structure as Embodiment 1. The difference is that, in order to further improve the efficiency of mass production, the winding post 1 and the pin mounting bracket 2 are integrally injection molded using a higher precision mold, ensuring that the spacing between all pins 21 is highly consistent, avoiding the need for subsequent manual straightening. At the same time, the guide post 312 and the guide hole 322 adopt a slight interference fit design, so that the upper iron core 31 and the lower iron core 32 can maintain a pre-fixed state after initial docking, which facilitates the subsequent installation of the elastic snap-fit ​​plate 4.

[0035] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A transformer core structure comprising a winding leg (1), characterized in that: The winding post (1) is fixedly connected to the front and rear ends of the bottom with pin mounting brackets (2). The top surface of the winding post (1) is provided with fixing holes (11). Multiple pins (21) are evenly arranged and fixedly connected to the front and rear ends of the outer wall of the pin mounting bracket (2). The outer wall of the winding post (1) is fitted with an iron core assembly (3). The two ends of the iron core assembly (3) are fixedly snapped with elastic snap plates (4) for fixing the iron core assembly (3). The iron core assembly (3) includes an upper iron core (31) and a lower iron core (32). A connecting post is fixedly connected to the middle of the bottom surface of the upper iron core (31). One (311), guide posts (312) are fixedly connected to both ends of the bottom surface of the upper iron core (31), and a second connecting post (321) is fixedly connected to the top surface of the lower iron core (32) at the opposite position of the first connecting post (311). A guide hole (322) is opened on the top surface of the lower iron core (32) at the opposite position of the guide post (312), and a guide post (312) is inserted into the guide hole (322). The first connecting post (311) and the second connecting post (321) are respectively inserted into the fixed hole (11) from the upper end and the lower end of the winding post (1).

2. The transformer core structure of claim 1, wherein: The upper iron core (31) has a first locking position (313) on both sides of the top surface, and the lower iron core (32) has a second locking position (323) on the bottom surface opposite to the first locking position (313).

3. The transformer core structure of claim 1, wherein: The elastic snap-fit ​​plate (4) is fixedly connected to snap-fit ​​plate one (41) and snap-fit ​​plate two (43) at its upper and lower ends respectively, and snap-fit ​​plate one (41) and snap-fit ​​plate two (43) are in contact with the surfaces of the first snap-fit ​​position (313) and the second snap-fit ​​position (323) respectively.

4. The transformer core structure of claim 3, wherein: Both the first snap-fit ​​plate (41) and the second snap-fit ​​plate (43) have a bent portion (42) fixedly connected to their surfaces, and the surface of the bent portion (42) is in contact with the surfaces of the first snap-fit ​​position (313) and the second snap-fit ​​position (323).

5. The transformer core structure of claim 4, wherein: The bottom surface of the second snap-fit ​​plate (43) is fixedly connected with a pin (44) that is bent downward for connection to the circuit board.

6. The transformer core structure of claim 1, wherein: The winding post (1) and the pin mounting bracket (2) are designed as an integrated structure.

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