Transformer framework and transformer structure

Abstract

The transformer framework comprises a framework body, a hollow inner cavity is formed in the framework body in the axial direction, a first limiting structure is arranged on the inner wall of the hollow inner cavity of the framework body, and a second limiting structure is arranged on the outer wall, close to a cavity opening of the hollow inner cavity, of the framework body. When the transformer framework and the magnetic core are installed, the first limiting structure limits rotation of the magnetic core, and the second limiting structure limits movement of the magnetic core in the axial direction. According to the technical scheme, the first limiting structure is arranged on the inner wall of the hollow inner cavity, the second limiting structure is arranged on the outer wall of the cavity opening, rotation of the magnetic core is limited by the first limiting structure, movement of the magnetic core in the axial direction is limited by the second limiting structure, and the magnetic core is effectively fixed. The situation that the transformer framework cannot reliably fix multiple parts of magnetic cores is avoided, and the structural stability and the performance reliability of the transformer are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to transformer technical field especially relates to a transformer framework and transformer structure. BACKGROUND

[0002] Transformers are indispensable key components in power and electronic equipment, and are widely used in power transmission, signal processing and power conversion fields. As one of the core components of the transformer, the framework (also known as the transformer wire frame) plays a crucial role in the structural design of the transformer. The transformer framework mainly undertakes the following functions: first, it provides a winding space for the copper wire inside the transformer; second, it is used to fix and limit the magnetic core in the transformer.

[0003] In related technologies, the transformer framework is usually used in cooperation with the integral magnetic core, and its design can meet the general purpose, but has limitations in some specific situations. For example, when the magnetic core needs to be split into multiple parts to meet special electrical performance requirements, the limiting function of the traditional framework cannot effectively fix and position the multi-part magnetic core, which can easily cause the magnetic core to rotate or displace, thereby affecting the overall performance and stability of the transformer. SUMMARY

[0004] The main purpose of the utility model is to provide a transformer framework and a transformer structure to at least solve the technical problem that the transformer framework in related technologies cannot effectively fix the multi-part magnetic core.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] The first aspect of the utility model provides a transformer framework, which comprises a framework body with a hollow inner cavity formed in the axial direction, a first limiting structure is arranged on the inner wall of the hollow inner cavity of the framework body, and a second limiting structure is arranged on the outer wall of the framework body close to the cavity opening of the hollow inner cavity; wherein, when the transformer framework is installed with the magnetic core, the first limiting structure limits the rotation of the magnetic core, and the second limiting structure limits the movement of the magnetic core in the axial direction.

[0007] The second aspect of the utility model provides a transformer structure, which comprises a magnetic core and a transformer framework as in the first aspect, and the magnetic core is installed in the transformer framework.

[0008] The utility model discloses a transformer framework and transformer structure, through setting up first limit structure on the inner wall of hollow inner chamber, setting up second limit structure on the cavity mouth outer wall, the autorotation of magnetic core is limited to first limit structure, and the movement of magnetic core in axial direction is limited to second limit structure, realizes the effective fixation of magnetic core. BRIEF DESCRIPTION OF DRAWINGS

[0009] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the related art, the drawings needed to be used in the embodiments or related art description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0010] Figure 1 The three-dimensional schematic diagram of the transformer framework provided by the embodiments of the present application is shown in the drawings.

[0011] Figure 2 The front view of the transformer framework and the magnetic core after installation provided by the embodiments of the present application is shown in the drawings.

[0012] Figure 3 The top view of the transformer framework and the magnetic core after installation provided by the embodiments of the present application is shown in the drawings.

[0013] Figure 4 The structure split schematic diagram when the transformer framework and the magnetic core are installed provided by the embodiments of the present application is shown in the drawings.

[0014] Reference signs: framework body 1, first limit structure 10, second limit structure 20, second heat dissipation channel 30, first limit support 100, first limit rib 101, first limit plate 104, second limit plate 102, third limit plate 103, first heat dissipation channel 40, magnetic core heat dissipation channel 50, limit bottom 202, baffle 201, 203, magnetic core 2, first magnetic core 21, second magnetic core 24, third magnetic core 22, fourth magnetic core 23. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application, and obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0016] It should be noted that related terms such as "first", "second" and the like can be used to describe various components, but these terms do not limit the component. These terms are only used to distinguish one component from another component. For example, without departing from the scope of the present application, the first component can be referred to as the second component, and the second component can also be referred to as the first component. The term "and / or" refers to the combination of any one or more of the related terms and the described terms.

[0017] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , the embodiment provides a transformer skeleton, which comprises a skeleton body 1 formed with a hollow cavity in the axial direction, and a magnetic core is accommodated in the hollow cavity. In addition, the skeleton body 1 is generally hollow cylinder, which is provided with first limiting structure 10 and second limiting structure 20.

[0018] The first limiting structure 10 is arranged on the inner wall of the hollow cavity of the skeleton body 1, for example, in the form of protrusion, groove, limiting rib or positioning column, mainly to limit the rotation of the magnetic core, that is, to prevent the magnetic core from rotating in the hollow cavity of the skeleton body 1. And, the second limiting structure 20 is arranged on the outer wall of the skeleton body 1 close to the cavity opening of the hollow cavity, for example, buckle, annular protrusion or similar structure, mainly to limit the movement of the magnetic core in the axial direction, to ensure that the magnetic core does not move along the axial direction and is tightly matched with the skeleton.

[0019] Specifically, when the magnetic core 2 is installed in the transformer skeleton, the first limiting structure 10 contacts with the specific surface or slot of the magnetic core 2 to form directional constraint and prevent rotation. The second limiting structure 20 fixes the magnetic core 2 after being inserted to the predetermined position, and the magnetic core 2 cannot move along the axial direction by mechanical buckle or pressure fit. Therefore, the cooperation of the first limiting structure 10 and the second limiting structure 20 ensures the stability and position accuracy of the magnetic core 2 in the skeleton, realizes the effective fixation of the magnetic core 2, avoids the situation that the transformer skeleton cannot reliably fix the multi-part magnetic core, and significantly improves the structural stability and performance reliability of the transformer.

[0020] In an optional embodiment of the embodiment, the first limiting structure 10 includes two first limiting bodies arranged at opposite ends on the inner wall, and the first limiting body includes a first limiting support 100 and a first limiting rib 101 arranged on the first limiting support 100, and the first limiting support 100 is formed with a first limiting part and a second limiting part. Among them, the limiting part can be a protruding structure on the first limiting support 100, such as plate, column, edge or arc, whose height and position are matched with the shape of the magnetic core, used to clamp the specific part of the surface of the magnetic core 2, thereby preventing the magnetic core from rotating.

[0021] When the transformer frame is installed with the assembled magnetic core (a magnetic core assembled by multiple partial magnetic cores), the two oppositely arranged first limiting portions and one side of the two oppositely arranged first limiting ribs 101 cooperatively define the rotation of the first partial magnetic core 21 in the assembled magnetic core, and the other side of the two oppositely arranged first limiting ribs 101 cooperatively define the rotation of the second partial magnetic core in the assembled magnetic core; wherein the first partial magnetic core includes the first magnetic core 21 and the second magnetic core 24 symmetrically arranged in the first region in the axial direction, and the second partial magnetic core includes the third magnetic core 22 and the fourth magnetic core 23 symmetrically arranged in the second region in the axial direction.

[0022] That is, when the assembled magnetic core is assembled, the two oppositely arranged first limiting portions and one side of the two oppositely arranged first limiting ribs cooperatively limit the rotation of the partial magnetic core (including the first magnetic core 21 and the second magnetic core 24) in the assembled magnetic core. Meanwhile, the other side of the two oppositely arranged first limiting ribs cooperatively limits the rotation of the partial magnetic core (including the third magnetic core 22 and the fourth magnetic core 23) in the assembled magnetic core.

[0023] In an optional embodiment of the present embodiment, the first limiting support 100 includes a first limiting plate 104, a second limiting plate 102, and a third limiting plate 103. The top of the first limiting plate 104 is vertically arranged on the hollow inner wall, and the top of the second limiting plate 102 and the top of the third limiting plate 103 are obliquely arranged on the hollow inner wall. The bottom of the first limiting plate 104, the bottom of the second limiting plate 102, and the bottom of the third limiting plate 103 are fixed with the first limiting rib 101.

[0024] Specifically, the first limiting support 100 is composed of multiple limiting plates, which cooperatively limit the position of the magnetic core in multiple dimensions. That is, the top of the first limiting plate 104 is vertically arranged on the hollow inner wall, which mainly functions to provide strong limiting in the radial direction to prevent the magnetic core from deviating in this direction. Meanwhile, the end face of the second limiting plate 102 of one first limiting support 100 serves as a first limiting portion, and the end face of the second limiting plate 102 of another first limiting support 100 serves as another first limiting portion. The two oppositely arranged first limiting portions are arranged on the hollow inner wall at a certain oblique angle, which cooperatively limits the rotation of a part of the magnetic core in the axial and radial directions. In addition, the end face of the third limiting plate 103 of one first limiting support 100 serves as a second limiting portion, which cooperatively limits the rotation of a part of the magnetic core in the axial and radial directions together with the end face of the third limiting plate 103 of another first limiting support 100 (serving as another second limiting portion) arranged on the hollow inner wall at a certain oblique angle.

[0025] In summary, the first limiting structure 10 includes two first limiting bodies arranged at opposite ends of the inner wall, each first limiting body including a first limiting support 100 and a first limiting rib 101 arranged on the first limiting support 100, and each first limiting support including a first limiting plate 104, a second limiting plate 102, and a third limiting plate 103. Thus, the entire transformer skeleton can effectively fix the assembled magnetic core (including the first magnetic core 21, the second magnetic core 24, the third magnetic core 22, and the fourth magnetic core 23) through the first limiting structure 10.

[0026] In an optional embodiment of the present embodiment, the first limiting support 100 and the inner wall form a first heat dissipation channel 40 extending from one cavity opening of the hollow inner cavity to another cavity opening. By designing the first heat dissipation channel 40 extending from one cavity opening of the hollow inner cavity to another cavity opening between the first limiting support 100 and the hollow inner wall, a continuous air flow channel is formed, thereby introducing a heat dissipation function into the transformer skeleton, which helps to improve the overall heat dissipation performance of the magnetic core and the skeleton.

[0027] In addition, the first limiting rib 101 has a certain width in the radial direction (which can be 1 / 8 to 1 / 6 of the radial dimension of the skeleton body), thereby separating the first magnetic core 21 and the third magnetic core 22, and separating the fourth magnetic core 23 and the second magnetic core 24, and forming a magnetic core heat dissipation channel 50 between adjacent magnetic cores. By designing the thickness of the first limiting rib 101 in the radial direction, on the one hand, the isolation between the magnetic cores is achieved, reducing the mutual interference and mechanical damage between the magnetic core assemblies; on the other hand, an effective magnetic core heat dissipation channel 50 is formed, which cooperates with the heat dissipation design of the skeleton to greatly improve the heat dissipation performance.

[0028] In addition, the left and right sides of the first limiting rib 101 near the cavity opening are respectively provided with guide installation parts. The guide installation parts can be circular arc-shaped chamfers, and the assembly process of the transformer skeleton and the magnetic core is significantly improved by the chamfer design. The assembly process is more convenient and efficient.

[0029] In an optional embodiment of the present embodiment, the skeleton body forms a second heat dissipation channel 30 extending from the outer wall of the skeleton body to the hollow inner wall. The second heat dissipation channel 30 forms a heat dissipation channel for gas flow in the radial direction between the outer wall of the skeleton body and the hollow inner wall, providing more paths for air flow, thereby improving the heat dissipation efficiency.

[0030] In an optional embodiment of the present embodiment, the second heat dissipation channel 30 communicates with the first heat dissipation channel 40. The two heat dissipation channels form a communicating structure to connect the heat dissipation paths between the outside of the skeleton body and the inside of the hollow inner cavity, realizing unobstructed circulation of air flow in the radial direction and the axial direction, thereby significantly improving the heat dissipation performance of the transformer skeleton.

[0031] In an optional embodiment of the present embodiment, the second limiting structure 20 includes a plurality of second limiting bodies arranged circumferentially around the center of the transformer skeleton, each of which includes a limiting bottom 202 arranged along the radial direction of the outer wall and two baffles (labeled as 201 and 203) arranged at both ends of the limiting bottom 202. When the transformer skeleton is mounted with the assembled magnetic core, the two second limiting bodies located at one side of the cavity opening limit the movement of the first part of the magnetic core in the axial direction, and the two second limiting bodies located at the other side of the cavity opening limit the movement of the second part of the magnetic core in the axial direction.

[0032] Specifically, the limiting bottom 202 is arranged along the radial direction of the outer wall of the skeleton to support the end of the magnetic core, thereby limiting the free movement of the magnetic core in the axial direction. The baffles are arranged on both sides of the limiting bottom 202 to form a clamping structure for further stabilizing the position of the magnetic core and preventing it from being offset or loosened in the axial direction under the action of external force.

[0033] In an optional embodiment of the present embodiment, the radial cross section of the skeleton body can be one of a circle, a rectangle, and an ellipse. By adopting a circular, rectangular, or elliptical cross section, the skeleton body can balance the heat dissipation performance, mechanical strength, processing convenience, and space adaptability according to specific application requirements. Designers can optimize the overall performance of the skeleton in the transformer by adjusting the cross-sectional shape while meeting the technical requirements of different scenarios. This diverse design makes the transformer skeleton have more extensive applicability and efficient performance.

[0034] The present embodiment also provides a transformer structure, which includes a magnetic core and the transformer skeleton provided by any of the above embodiments, and the magnetic core is mounted in the transformer skeleton.

[0035] The transformer skeleton and the transformer structure of the present embodiment set the first limiting structure on the inner wall of the hollow inner cavity and set the second limiting structure on the outer wall of the cavity opening, the first limiting structure limits the rotation of the magnetic core, and the second limiting structure limits the movement of the magnetic core in the axial direction, thereby effectively fixing the magnetic core. Avoid the situation that the transformer skeleton cannot reliably fix the multiple parts of the magnetic core, and significantly improve the structural stability and performance reliability of the transformer.

[0036] The specific embodiments of the utility model have been described in detail above, but they are only examples, and the utility model is not limited to the specific embodiments described above. Any equivalent modification or substitution of the utility model made by those skilled in the art is also within the scope of the utility model, therefore, equivalent transformation, modification, improvement, etc. made without departing from the spirit and principle range of the utility model should be covered in the scope of the utility model.

Claims

1. A transformer core, characterized by The transformer skeleton comprises a skeleton body with a hollow cavity formed in the axial direction, a first limiting structure is arranged on the inner wall of the hollow cavity of the skeleton body, and a second limiting structure is arranged on the outer wall of the skeleton body close to the cavity opening of the hollow cavity; When the transformer skeleton is installed with the magnetic core, the first limiting structure limits the rotation of the magnetic core, and the second limiting structure limits the movement of the magnetic core in the axial direction.

2. The transformer bobbin of claim 1, wherein The first limiting structure comprises two first limiting bodies arranged in opposite ends on the inner wall, the first limiting body comprises a first limiting support and a first limiting rib arranged on the first limiting support, and the first limiting support is formed with a first limiting part and a second limiting part; When the transformer skeleton is installed with the assembled magnetic core, the two first limiting parts arranged in opposite ends and the two first limiting ribs arranged in opposite ends are used to limit the rotation of the first part of the magnetic core in the assembled magnetic core, and the two second limiting parts arranged in opposite ends and the two first limiting ribs arranged in opposite ends are used to limit the rotation of the second part of the magnetic core in the assembled magnetic core; wherein the first part of the magnetic core comprises a first magnetic core and a second magnetic core arranged symmetrically in the axial direction, and the second part of the magnetic core comprises a third magnetic core and a fourth magnetic core arranged symmetrically in the radial direction.

3. The transformer skeleton according to claim 2, characterized in that The first limiting support and the inner wall form a first heat dissipation channel passing through one cavity opening to the other cavity opening of the hollow cavity.

4. The transformer skeleton according to claim 3, characterized in that The skeleton body is formed with a second heat dissipation channel passing through the outer wall of the skeleton body to the hollow inner wall.

5. The transformer skeleton according to claim 4, characterized in that The second heat dissipation channel communicates with the first heat dissipation channel.

6. The transformer skeleton according to claim 2, characterized in that, The first limiting support comprises a first limiting plate, a second limiting plate and a third limiting plate, the top of the first limiting plate is arranged vertically on the hollow inner wall, the top of the second limiting plate and the top of the third limiting plate are arranged obliquely on the hollow inner wall, and the bottom of the first limiting plate, the bottom of the second limiting plate and the bottom of the third limiting plate are fixed with the first limiting rib.

7. The transformer skeleton according to claim 6, characterized in that The second limiting structure comprises a plurality of second limiting bodies arranged circumferentially with the center of the transformer skeleton, the second limiting body comprises a limiting bottom arranged along the radial direction of the outer wall and a baffle, and the baffle is two and arranged at both ends of the limiting bottom; When the transformer skeleton is installed with the assembled magnetic core, the two second limiting bodies located at one side cavity opening are used to limit the movement of the first part of the magnetic core in the axial direction in the assembled magnetic core, and the two second limiting bodies located at the other side cavity opening are used to limit the movement of the second part of the magnetic core in the axial direction in the assembled magnetic core.

8. The transformer skeleton according to claim 2, characterized in that The left and right sides of the first limiting rib close to the cavity opening are respectively provided with guide installation parts.

9. The transformer skeleton according to claim 1, characterized in that, The radial cross section of the skeleton body is circular.

10. A transformer structure, characterized by The transformer skeleton comprises a magnetic core and a transformer skeleton as claimed in any one of claims 1 to 9, and the magnetic core is installed in the transformer skeleton.

Images