A magnetic core-assisted positioning structure

Abstract

This utility model relates to a magnetic core auxiliary positioning structure. The magnetic core includes an I-type magnetic core and an E-type magnetic core. The magnetic cores are configured such that after the E-type magnetic core passes through the circuit board, the I-type magnetic core is connected to the E-type magnetic core passing through the circuit board. The auxiliary positioning structure includes: a base with a receiving space configured to receive a circuit board that is placed upside down and has an E-type magnetic core mounted on it; a positioning component disposed above the receiving space, including a positioning plate and a positioning port through the positioning plate. The positioning plate is used to press the circuit board into the receiving space, and the positioning port is used to place the I-type magnetic core to connect with the E-type magnetic core on the circuit board; and a clamping component located above the positioning component, used to clamp the positioning component onto the base. The I-type magnetic core is placed through the positioning port to accurately connect the I-type magnetic core and the E-type magnetic core. Then, the clamping component clamps the positioning plate to the circuit board to secure the I-type magnetic core and the E-type magnetic core, thereby achieving precise assembly of the I-type magnetic core.

Description

Technical Field

[0001] This utility model relates to the field of magnetic core installation technology, and specifically to a magnetic core auxiliary positioning structure. Background Technology

[0002] In the process of assembling a circuit board, one step is to install components onto the circuit. In the step of installing the magnetic core onto the circuit board, since the magnetic core is usually composed of a type I magnetic core and a type E magnetic core, the existing technology involves first inserting the three legs of the type E magnetic core into the corresponding holes on the circuit board, and then attaching and fixing the type I magnetic core to the exposed end face of the type E magnetic core.

[0003] However, since the circuit board often needs to be assembled with the magnetic core after reflow soldering or wave soldering, the center post and side post of the E-type magnetic core have already passed through the circuit board, and the end face is exposed on the back of the circuit board. The I-type magnetic core must be precisely attached to the back of the circuit board. Since the circuit board is full of components after reflow soldering and the operating space is small, it is difficult to assemble the I-type magnetic core. Furthermore, the mating surfaces of the E-type magnetic core and the I-type magnetic core must be kept highly parallel and close to ensure the integrity of the magnetic circuit and reduce magnetic leakage. However, the back of the circuit board lacks a reliable positioning reference, resulting in poor assembly consistency and unsatisfactory connection quality.

[0004] Therefore, it is necessary to improve the existing technology to overcome the aforementioned defects. Utility Model Content

[0005] In view of this, the present application provides a magnetic core-assisted positioning structure to solve at least one problem existing in the background art. The magnetic core includes an I-type magnetic core and an E-type magnetic core adapted to the I-type magnetic core. The magnetic core is configured such that after the E-type magnetic core passes through the circuit board, the I-type magnetic core is connected to the E-type magnetic core passing through the circuit board. The auxiliary positioning structure includes: The base has a receiving space configured to receive a circuit board that is placed upside down and has an E-type magnetic core mounted on it. A positioning component is disposed above the accommodating space, including a positioning plate and a positioning port through the positioning plate. The positioning plate is used to press the circuit board into the accommodating space, and the positioning port is used to place an I-type magnetic core to connect with an E-type magnetic core on the circuit board. A clamping component, located above the positioning component, is used to clamp the positioning component onto the base.

[0006] Optionally, in the above-described magnetic core-assisted positioning structure, the positioning plate has a downwardly recessed groove, and the groove has a window; The positioning component further includes a positioning element disposed in the groove and detachably connected to the positioning plate, the positioning opening being formed on the positioning element and communicating with the window.

[0007] Optionally, in the above-described magnetic core-assisted positioning structure, the groove has a first overlapping portion, and the positioning member has a second overlapping portion adapted to the first overlapping portion, wherein the second overlapping portion and the first overlapping portion form a stepped overlapping.

[0008] Optionally, in the above-mentioned magnetic core-assisted positioning structure, the positioning element includes a first step surface flush with the positioning plate and a second step surface lower than the first step surface, the positioning opening is located on the second step surface, and both the first step surface and the second step surface have arc-shaped transition surfaces.

[0009] Optionally, in the above-described magnetic core auxiliary positioning structure, the positioning element is configured such that, when the type I magnetic core is connected to the type E magnetic core, at least a portion of the type I magnetic core is located within the positioning port.

[0010] Optionally, in the above-mentioned magnetic core-assisted positioning structure, the accommodating space is provided with a plurality of clearance holes, which are used to avoid a plurality of components on the circuit board.

[0011] Optionally, in the above-mentioned magnetic core-assisted positioning structure, four through holes are also provided at the corners of the positioning opening, and at least part of the magnetic core overlaps with the through holes in the height direction; The clamping assembly includes a pressure plate and a clamping member disposed downward from the pressure plate. The clamping member corresponds one-to-one with four through holes and is used to apply force to the magnetic core.

[0012] Optionally, in the above-mentioned magnetic core-assisted positioning structure, a card slot is provided on the base; The pressure plate is provided with a claw. Under the action of external force, the claw can rotate relative to the pressure plate to have a clamped state and a loose state. When it is in the clamped state, the claw is engaged with the card seat to press the positioning component onto the base. When it is in the loose state, the claw is separated from the card seat, and the positioning component can freely enter and exit the receiving space.

[0013] Optionally, in the above-mentioned magnetic core-assisted positioning structure, the base is provided with a first positioning hole, the positioning component is provided with a second positioning hole coaxially arranged with the first positioning hole, and the clamping component is provided with a first positioning post, the first positioning post being adapted to pass through the second positioning hole and the first positioning hole in sequence.

[0014] Optionally, in the above-described magnetic core-assisted positioning structure, both the positioning component and the clamping component are provided with a pair of handles.

[0015] Compared with the prior art, this application has the following beneficial effects: by providing a base, a positioning component, and a clamping component, and the base having an accommodating space for placing the circuit board, the positioning component includes a positioning plate and a positioning port for clamping the circuit board, so that the circuit board after installing the E-type magnetic core can be placed in reverse in the accommodating space, the positioning plate clamps the circuit board, and the I-type magnetic core is placed through the positioning port to accurately connect the I-type magnetic core and the E-type magnetic core. Then, the clamping component clamps the positioning plate and the circuit board to secure the I-type magnetic core and the E-type magnetic core, thereby achieving precise assembly of the I-type magnetic core and ensuring the coaxiality and tightness of the I-type magnetic core and the E-type magnetic core, thereby improving the magnetic circuit consistency and enhancing the electrical performance and reliability of the circuit board. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the magnetic core auxiliary positioning structure shown in this application; Figure 2 for Figure 1 A schematic diagram of the assembly of the base and positioning components of the magnetic core-assisted positioning structure shown. Figure 3 for Figure 2 A cross-sectional view of the base and positioning components assembled in the magnetic core-assisted positioning structure shown. Figure 4 for Figure 3 A magnified view of part A in the middle; Figure 5 This is a schematic diagram of the positioning component in the magnetic core-assisted positioning structure shown in this application; Figure 6 This is a schematic diagram of the assembly of the base and the circuit board in the magnetic core-assisted positioning structure shown in this application.

[0017] Figure label: Type I magnetic core 10, Type E magnetic core 20, circuit board 30; Base 1, accommodating space 11, clearance hole 111, card holder 12, first positioning hole 13; Positioning component 2, positioning plate 21, groove 211, window 2111, first overlapping part 2112, positioning element 22, positioning port 221, through hole 2211, second overlapping part 222, first step surface 223, second step surface 224, transition surface 225, second positioning hole 23. The clamping assembly 3, the pressure plate 31, the claw 311, the clamping component 32, the first positioning post 33, and the handle 34. Detailed Implementation

[0018] The exemplary embodiments disclosed in this application will now be described in more detail. Numerous specific details are set forth in the following description to provide a more thorough understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without one or more of these details. In other instances, to avoid confusion with this application, some technical features well-known in the art have not been described; that is, not all features of actual embodiments are described herein, nor are well-known functions and structures described in detail.

[0019] It should be understood that when an element or layer is referred to as "on," "adjacent to," "connected to," or "coupled to" other elements or layers, it may be directly on, adjacent to, connected to, or coupled to other elements or layers, or there may be intervening elements or layers. Conversely, when an element is referred to as "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" other elements or layers, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc., may be used to describe various elements, components, areas, layers, and / or portions, these elements, components, areas, layers, and / or portions should not be limited by these terms. These terms are only used to distinguish one element, component, area, layer, or portion from another element, component, area, layer, or portion. Therefore, without departing from the teachings of this application, the first element, component, area, layer, or portion discussed below may be referred to as a second element, component, area, layer, or portion. And the discussion of a second element, component, area, layer, or portion does not imply that the first element, component, area, layer, or portion necessarily exists in this application.

[0020] Spatial relation terms such as “below,” “under,” “below,” “under,” “above,” “above,” etc., are used here for convenience to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms are intended to also include different orientations of devices in use and operation.

[0021] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. When used herein, the singular forms “a,” “an,” and “ / the” are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “compose” and / or “comprising,” when used in this specification, identify the presence of features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups. When used herein, the term “and / or” includes any and all combinations of the associated listed items.

[0022] To fully understand this application, detailed steps and structures will be presented in the following description to illustrate the technical solution of this application. Preferred embodiments of this application are described in detail below; however, in addition to these detailed descriptions, this application may have other implementation methods.

[0023] Typically, a magnetic core is composed of a type I magnetic core 10 and a type E magnetic core 20. When installing the magnetic core, the three legs of the type E magnetic core 20 are first inserted into the corresponding holes on the circuit board 30, and then the type I magnetic core 10 is attached and fixed to the exposed end face of the type E magnetic core 20. However, since the circuit board 30 often needs to be assembled with the magnetic core after reflow soldering or wave soldering, at this time the center post and side posts of the type E magnetic core 20 have already passed through the circuit board 30, and the end face is exposed on the back of the circuit board 30. The type I magnetic core 10 must be precisely attached to this back side. Because the circuit board 30 is already covered with components after reflow soldering, the operating space is small, and the assembly precision of the type I magnetic core 10 and type E magnetic core 20 in the prior art is poor.

[0024] To solve the above problems, refer to Figure 1 As shown in the preferred embodiment of this application, a magnetic core-assisted positioning structure can quickly connect the type I magnetic core 10 to the type E magnetic core 20 on the circuit board 30, and can ensure connection accuracy and improve the electrical performance of the circuit board 30.

[0025] In this embodiment, the magnetic core auxiliary positioning structure includes a base 1, a positioning component 2, and a clamping component 3. The base 1 has a receiving space 11 configured to receive a circuit board 30 with an E-type magnetic core 20 mounted on it in an upside-down position. The positioning component 2 is positioned above the receiving space 11 and includes a positioning plate 21 and a positioning opening 221 passing through the positioning plate 21. The positioning plate 21 is used to clamp the circuit board 30 within the receiving space 11, and the positioning opening 221 is used to place an I-type magnetic core 10 to connect with the E-type magnetic core 20 on the circuit board 30. The clamping component 3 is located above the positioning component 2 and is used to clamp the positioning component 2 onto the base 1.

[0026] Understandably, by providing the accommodating space 11, the reverse-positioned circuit board 30 can be accommodated and the circuit board 30 can be limited to prevent it from shifting.

[0027] Understandably, by setting up the positioning plate 21 and the positioning port 221, the positioning plate 21 presses the circuit board 30 to achieve further limiting, while the positioning port 221 can position and install the type I magnetic core 10 to ensure the coaxiality and tightness of the type E magnetic core 20 and the type I magnetic core 10, reduce magnetic resistance, improve magnetic circuit consistency, and thus improve the electrical performance and reliability of the transformer.

[0028] In this embodiment, reference Figure 6As shown, the accommodating space 11 is also provided with several clearance holes 111 to avoid the components that have been soldered on the back of the circuit board 30, so as to avoid the risk of crushing or short circuit.

[0029] Further, refer to Figures 2-5 As shown, the positioning plate 21 has a recessed groove 211, and the groove 211 has a window 2111; the positioning assembly 2 also includes a positioning member 22 disposed in the groove 211 and detachably connected to the positioning plate 21, the positioning port 221 is formed on the positioning member 22, and the positioning port 221 communicates with the window 2111.

[0030] Understandably, the detachable positioning component 22 is provided on the positioning plate 21, making the positioning port 221 an independent module. This facilitates the quick replacement of the positioning component 22 for different sizes of I-type magnetic cores 10, thereby improving the versatility of the tooling and the speed of changeover.

[0031] Furthermore, the groove 211 has a first overlapping portion 2112, and the positioning member 22 has a second overlapping portion 222 that is adapted to the first overlapping portion 2112. The second overlapping portion 222 and the first overlapping portion 2112 form a stepped overlap, which can simplify the assembly process of the positioning member 22, ensure that the positioning member 22 will not sink or move when subjected to force, improve the repeatability of positioning accuracy, and the stepped overlap method can also disperse the clamping force and avoid local stress concentration causing deformation of the positioning plate 21 or the positioning member 22.

[0032] Furthermore, the positioning component 22 includes a first step surface 223 flush with the positioning plate 21 and a second step surface 224 lower than the first step surface 223. The positioning port 221 is located on the second step surface 224. Both the first step surface 223 and the second step surface 224 have arc-shaped transition surfaces 225, so that the type I magnetic core 10 has a guiding effect when it is placed into the positioning port 221, so that the type I magnetic core 10 can be quickly connected to the type E magnetic core 20 from the positioning port 221, while reducing the impact on the type I magnetic core 10.

[0033] Furthermore, the positioning element 22 is configured such that when the type I magnetic core 10 is connected to the type E magnetic core 20, at least part of the type I magnetic core 10 is located within the positioning port 221 to form a dual constraint of radial and axial limiting, ensuring that the magnetic core will not shift horizontally during the pressing process, improving the magnetic core fitting accuracy, and also providing lateral support for the wrapping of the magnetic core during pressing to prevent the magnetic core from chipping or breaking.

[0034] Furthermore, four through holes 2211 are provided at the corner of the positioning port 221, and at least part of the magnetic core overlaps with the through holes 2211 in the height direction; the clamping assembly 3 includes a pressure plate 31 and a clamping member 32 disposed downward from the pressure plate 31. The clamping member 32 corresponds one-to-one with the four through holes 2211 and is used to apply force to the magnetic core to achieve point-to-point uniform pressure on the magnetic core, avoiding tilting or breakage of the magnetic core caused by single-point force; the purpose of providing four through holes 2211 is that when the structure does not need to install the magnetic core, the clamping member 32 can be disposed through the through holes 2211 to facilitate the storage of the structure and reduce the space occupied.

[0035] Furthermore, a retainer 12 is provided on the base 1; a claw 311 is provided on the pressure plate 31. The claw 311 can rotate relative to the pressure plate 31 under the action of external force to have a clamping state and a loosening state. When it is in the clamping state, the claw 311 is clamped with the retainer 12 to press the positioning component 2 onto the base 1; when it is in the loosening state, the claw 311 is separated from the retainer 12, and the positioning component 2 can freely enter and exit the receiving space 11.

[0036] Understandably, the quick-release structure of the chuck 311 and the chuck seat 12 facilitates the rapid locking or releasing of the positioning component 2, improving production continuity. Furthermore, this locking method has a simple structure and is easy to operate.

[0037] Furthermore, the base 1 is provided with a first positioning hole 13, the positioning component 2 is provided with a second positioning hole 23 coaxially arranged with the first positioning hole 13, and the clamping component 3 is provided with a first positioning post 33. The first positioning post 33 is adapted to pass through the second positioning hole 23 and the first positioning hole 13 in sequence to prevent lateral displacement between adjacent parts of the base 1, the positioning component 2, and the clamping component 3, and can also eliminate cumulative errors and improve assembly consistency.

[0038] Furthermore, both the positioning component 2 and the clamping component 3 are provided with a pair of handles 34 to facilitate quick manual handling. In addition, the handles 34 can also serve as windows for robotic arms to grasp or for clamps to achieve compatibility between manual and automatic modes.

[0039] The above is only one specific implementation of this application, and any other improvements made based on the concept of this application shall be considered within the scope of protection of this application.

Claims

1. A core-assisted positioning structure, characterized by, The magnetic core includes an I-type magnetic core and an E-type magnetic core adapted to the I-type magnetic core. The magnetic core is configured such that after the E-type magnetic core passes through the circuit board, the I-type magnetic core is connected to the E-type magnetic core passing through the circuit board. The auxiliary positioning structure includes: The base has a receiving space configured to receive a circuit board that is placed upside down and has an E-type magnetic core mounted on it. A positioning component is disposed above the accommodating space, including a positioning plate and a positioning port through the positioning plate. The positioning plate is used to press the circuit board into the accommodating space, and the positioning port is used to place an I-type magnetic core to connect with an E-type magnetic core on the circuit board. A clamping component, located above the positioning component, is used to clamp the positioning component onto the base.

2. The magnetic core-assisted positioning structure according to claim 1, characterized in that, The positioning plate has a downwardly recessed groove, and the groove has a window; The positioning component further includes a positioning element disposed in the groove and detachably connected to the positioning plate, the positioning opening being formed on the positioning element and communicating with the window.

3. The magnetic core-assisted positioning structure according to claim 2, characterized in that, The groove has a first overlapping portion, and the positioning member has a second overlapping portion adapted to the first overlapping portion, wherein the second overlapping portion and the first overlapping portion form a stepped overlapping.

4. The magnetic core-assisted positioning structure according to claim 2, characterized in that, The positioning element includes a first step surface flush with the positioning plate and a second step surface lower than the first step surface. The positioning opening is located on the second step surface, and both the first step surface and the second step surface have arc-shaped transition surfaces.

5. The core-assisted positioning structure according to claim 2, characterized in that, The positioning element is configured such that, when the type I magnetic core is connected to the type E magnetic core, at least a portion of the type I magnetic core is located within the positioning port.

6. The magnetic core-assisted positioning structure according to claim 1, characterized in that, The accommodating space is provided with a plurality of clearance holes, which are used to avoid a plurality of components on the circuit board.

7. The magnetic core-assisted positioning structure according to claim 1, characterized in that, Four through holes are also provided at the corner of the positioning port, and at least part of the magnetic core overlaps with the through holes in the height direction; The clamping assembly includes a pressure plate and a clamping member disposed downward from the pressure plate. The clamping member corresponds one-to-one with four through holes and is used to apply force to the magnetic core.

8. The core-assisted positioning structure according to claim 7, characterized in that, The base is provided with a card slot; The pressure plate is provided with a claw. Under the action of external force, the claw can rotate relative to the pressure plate to have a clamped state and a loose state. When it is in the clamped state, the claw is engaged with the card seat to press the positioning component onto the base. When it is in the loose state, the claw is separated from the card seat, and the positioning component can freely enter and exit the receiving space.

9. The magnetic core-assisted positioning structure according to any one of claims 1-8, characterized in that, The base is provided with a first positioning hole, the positioning component is provided with a second positioning hole coaxially arranged with the first positioning hole, and the clamping component is provided with a first positioning post, which is adapted to pass through the second positioning hole and the first positioning hole in sequence.

10. The magnetic core-assisted positioning structure according to any one of claims 1-8, characterized in that, Both the positioning component and the clamping component are provided with a pair of handles.

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