Pressure maintaining jig for flat transformer

Abstract

The application relates to a pressure maintaining jig for a flat transformer, which comprises a lower die plate provided with a positioning groove for placing the flat transformer; an upper die plate correspondingly arranged with the lower die plate, and a magnetic core positioning piece arranged on the upper die plate and correspondingly arranged with the positioning groove for pressing the flat transformer; and a thimble arranged on the magnetic core positioning piece for pressing the PCB board extending out from the two sides of the upper magnetic core and the lower magnetic core in the flat transformer. The upper and lower die plates are matched to realize the pressing positioning of the flat transformer, and the thimble arranged on the magnetic core positioning piece of the upper die plate can press the PCB board in the flat transformer, thereby preventing the warping of the PCB board in the pressing process.

Description

Technical Field

[0001] This utility model relates to the field of flat plate transformer technology, and in particular to a pressure-holding fixture for flat plate transformers. Background Technology

[0002] In the production process of planar transformers, a pressure holding operation is usually required to ensure a stable connection between the components. However, existing pressure holding fixtures have certain shortcomings: on the one hand, the positioning accuracy of the planar transformer is limited, and positional deviations are prone to occur during the pressure holding process, affecting product consistency; on the other hand, the PCB boards extending from the upper and lower magnetic cores of the planar transformer are difficult to effectively press during pressure holding, which can easily lead to loose bonding between the PCB board and the magnetic core, or even warping, thus affecting the electrical performance and structural stability of the planar transformer. Utility Model Content

[0003] In view of this, the main purpose of this utility model is to provide a pressure-holding fixture for a flat plate transformer, which achieves the pressing and positioning of the flat plate transformer by the cooperation of the upper and lower templates. At the same time, the magnetic core positioning component of the upper template is provided with a pin, which can cooperate to press the PCB board in the flat plate transformer and prevent the PCB board from warping during the pressing process.

[0004] This application provides a pressure-holding fixture for a flat-plate transformer, comprising: The lower template has positioning slots for placing flat transformers; The upper template is set correspondingly to the lower template, and the upper template is provided with a magnetic core positioning component, which is set correspondingly to the positioning groove for pressing the flat transformer; and the magnetic core positioning component is provided with a pin for cooperating to press the PCB board extending from the upper and lower magnetic cores on both sides of the flat transformer.

[0005] In some embodiments, protrusions are provided at the four corners of the bottom of the positioning groove; The top surface of the protrusion is used to place the PCB board in the planar transformer, and the side wall of the protrusion is correspondingly engaged with the lower magnetic core in the planar transformer.

[0006] In some embodiments, a first positioning element is provided on one side of the positioning groove, and a second positioning element is provided on the other side. The first positioning member and the second positioning member cooperate to engage the two ends of the flat transformer.

[0007] In some embodiments, there are two first positioning members, and a first opening is provided between the two first positioning members.

[0008] In some embodiments, there are multiple positioning slots, and the multiple positioning slots are arranged in two rows on the lower template, with each row of positioning slots being equally spaced.

[0009] In some embodiments, the lower template is provided with a first snap-fit ​​fastener; The upper template is provided with a second buckle fastener, which matches the first buckle fastener.

[0010] In some embodiments, there are two first buckle fasteners, and the two first buckle fasteners are symmetrically arranged on both sides of the lower template.

[0011] In some embodiments, the lower template is provided with positioning holes; The upper template is provided with a positioning pin, and the positioning pin matches the positioning hole.

[0012] In some embodiments, the number of positioning holes is four, with every two positioning holes positioned opposite each other on both sides of the first buckle fastener.

[0013] In some embodiments, the magnetic core positioning element includes: The magnetic core positioning pin is vertically inserted into the upper template. A positioning boss is provided at one end of the magnetic core positioning pin near the lower template, and the two ends of the positioning boss near the lower template are correspondingly provided with the ejector pins. When the flat transformer is pressed, the positioning boss abuts against the upper magnetic core in the flat transformer, and the ejector pins abut against the PCB board in the flat transformer.

[0014] Technical effects of this utility model: This application utilizes an upper and lower template to achieve the clamping and positioning of a flat-plate transformer. Specifically, the lower template has a positioning groove for placing the flat-plate transformer to be clamped. Simultaneously, an upper template matching the lower template is provided. After the flat-plate transformer to be clamped is placed in the positioning groove, the upper template clamps it in place, achieving positioning and fixation of the flat-plate transformer. The upper template has a magnetic core positioning component that matches the position and size of the positioning groove. During processing and fixing, each component is placed in the positioning groove in the order of lower magnetic core, PCB board, and upper magnetic core from bottom to top. The magnetic core positioning component abuts against the top of the upper magnetic core, ensuring a tight fit between all components. It should be noted that the magnetic core positioning component is equipped with a push pin. The main body of the magnetic core positioning component can abut against the upper magnetic core of the flat transformer, providing pressure to the entire flat transformer. The push pin abuts against the corresponding positions of the PCB board extending from the upper and lower magnetic cores, which can further provide pressure to the PCB board on the original basis, preventing the edges of the PCB from lifting up when pressed and fixed, and further ensuring the fit between the upper magnetic core, the PCB board and the lower magnetic core.

[0015] Other features and aspects of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0016] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this disclosure together with the specification and serve to explain the principles of this disclosure.

[0017] Figure 1 The diagram shows a structural schematic of a pressure-holding fixture for a flat-plate transformer, as an embodiment of this application. Figure 2 The image shown is a partially enlarged view of a pressure-holding fixture for a flat-plate transformer, as described in an embodiment of this application. Figure 3 The diagram shows a structural schematic of the upper template in a pressure-holding fixture for a flat-plate transformer, as described in an embodiment of this application. Detailed Implementation

[0018] Various exemplary embodiments, features, and aspects of this disclosure will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0019] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0020] Furthermore, to better illustrate this disclosure, numerous specific details are set forth in the following detailed description. Those skilled in the art will understand that this disclosure can be practiced without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art have not been described in detail in order to highlight the main points of this disclosure.

[0021] like Figure 1 and Figure 2 As shown in the figure, this application provides a pressure-holding fixture for a flat-plate transformer, comprising: The lower template 100 is provided with a positioning groove 110 for placing a flat transformer; The upper template 200 is set in correspondence with the lower template 100, and the upper template 200 is provided with a magnetic core positioning component 210, which is set in correspondence with the positioning groove 110 for pressing the flat transformer; and the magnetic core positioning component 210 is provided with a push pin 211 for cooperating to press the PCB board 20 extending from the upper magnetic core 10 and the lower magnetic core 30 on both sides of the flat transformer.

[0022] In this embodiment, the upper template 200 and the lower template 100 cooperate to achieve the pressing and positioning of the flat transformer. Specifically, in the pressure-holding fixture of this embodiment, the lower template 100 is provided with a positioning groove 110 for placing the flat transformer to be pressed. It should be noted that the flat transformer includes an upper magnetic core 10, a PCB board 20, and a lower magnetic core 30. During the pressing and positioning of the flat transformer, the upper and lower magnetic cores are assembled and fixed on both sides of the PCB board 20 by the pressure-holding fixture of this embodiment. At the same time, this embodiment also provides an upper template 200 that matches the lower template 100. After the flat transformer to be pressed is placed in the positioning groove 110, the upper template 200 cooperates to press and fix the flat transformer, thereby achieving the positioning and fixation of the flat transformer. The upper template 200 is provided with a magnetic core positioning component 210 that matches the position and size of the positioning groove 110. During the processing and fixing process, each component is placed in the positioning groove 110 in the order of lower magnetic core 30, PCB board 20 and upper magnetic core 10 from bottom to top, and glue is filled between each component. When pressed and fixed, the magnetic core positioning component 210 can abut against the top of the upper magnetic core 10, so that each component fits tightly.

[0023] Furthermore, the magnetic core positioning component 210 in this embodiment is also equipped with a push pin 211. Specifically, the push pin 211 is located on the side of the magnetic core positioning component 210 near the positioning groove 110. It should be noted that the upper magnetic core 10 and lower magnetic core 30 extend from both sides of the PCB board 20 in the flat panel transformer. Based on this, when the pressure-holding fixture of this embodiment positions and presses the flat panel transformer, the main body of the magnetic core positioning component 210 can abut against the upper magnetic core 10 of the flat panel transformer, providing pressure to the entire flat panel transformer. Meanwhile, the push pin 211 on the magnetic core positioning component 210 abuts against the corresponding positions of the PCB board 20 extending from the upper and lower magnetic cores 30, further providing pressure to the PCB board 20 on top of the existing pressure, preventing the edges of the PCB from warping upwards during pressing and fixing, and further ensuring the fit between the upper magnetic core 10, the PCB board 20, and the lower magnetic core 30.

[0024] In some embodiments, the four corners of the bottom of the positioning groove 110 are provided with protrusions 111; the top surface of the protrusions 111 is used to place the PCB board 20 in the flat panel transformer, and the side wall of the protrusions 111 is used to snap the lower magnetic core 30 in the flat panel transformer.

[0025] In this embodiment, during the placement of the planar transformer, the lower magnetic core 30 is placed at the bottom of the positioning groove 110, and four protrusions 111 are provided at the four corners of the bottom of the positioning groove 110, so that the lower surface of the PCB board 20 is supported on the top surface of the four protrusions 111 and suspended above the bottom of the positioning groove 110. Specifically, both sides of the PCB board 20 are located on the protrusions 111. During the pressing process, they cooperate with the ejector pins 211 on the magnetic core positioning component 210. The protrusions 111 provide upward support, and the ejector pins 211 provide downward pressure, thereby effectively preventing the sides of the PCB board 20 from warping during the pressing process. The pressure of the ejector pins 211 counteracts the warping tendency of the PCB edge, thereby obtaining a more closely fitting planar transformer. In addition, the sidewalls of the protrusions 111 in this embodiment also lock the four corners of the lower magnetic core 30, providing reliable lateral restraint, preventing the lower magnetic core 30 from moving during the pressure holding process, and ensuring accurate positioning.

[0026] In some embodiments, a first positioning member 112 is provided on one side of the positioning groove 110 extending inward, and a second positioning member 113 is provided on the other side extending inward; the first positioning member 112 and the second positioning member 113 cooperate to engage the two ends of the flat transformer.

[0027] In this embodiment, a first positioning element 112 and a second positioning element 113 are provided extending inward from both sides of the positioning groove 110. Specifically, the first positioning element 112 is provided on one side of the positioning groove 110 perpendicular to the length of the lower template 100, and the second positioning element 113 is provided on the opposite side. During the pressing of the flat transformer, the first positioning element 112 and the second positioning element 113 are respectively engaged with the two sides of the flat transformer. That is, after the flat transformer is placed in the positioning groove 110, its two ends in the length direction are in contact with the first positioning element 112 and the second positioning element 113 respectively. In one scenario, the upper and lower parts of the first positioning element 112 are respectively engaged with the front sides of the upper magnetic core 10 and the lower magnetic core 30, and the upper and lower parts of the second positioning element 113 are respectively engaged with the rear sides of the upper magnetic core 10 and the lower magnetic core 30, thereby achieving the purpose of positioning the flat transformer, preventing the upper and lower magnetic cores 30 of the flat transformer from shifting during the pressing process, and ensuring the pressing effect of the finished flat transformer.

[0028] In some embodiments, there are two first positioning members 112, and a first opening is provided between the two first positioning members 112.

[0029] In this embodiment, the number of first positioning members 112 is preferably two. When pressing the flat transformer, the two first positioning members 112 are symmetrically arranged at both ends of one side of the flat transformer, and a first opening is provided between the two first positioning members 112, that is, a first opening is provided on one side of the positioning groove 110. At the same time, in this embodiment, a second opening is also provided on the other side of the positioning groove 110 opposite to the first opening. During the processing, the flat transformer can be removed through the first and second openings, that is, by taking the corresponding positions of the upper and lower magnetic cores 30, the pressed flat transformer can be taken out from the positioning groove 110, preventing the PCB board 20 from being directly removed, thereby avoiding the bending of the PCB board 20.

[0030] In some embodiments, there are multiple positioning slots 110, and the multiple positioning slots 110 are arranged in two rows on the lower template 100, with each row of positioning slots 110 being equally spaced.

[0031] In this embodiment, multiple positioning slots 110 are used, enabling the simultaneous placement and pressure holding of multiple flat transformers, significantly improving production efficiency. Simultaneously, the multiple positioning slots 110 are arranged in two rows on the lower template 100, making efficient use of the space within the lower template 100. The equidistant layout of the two rows ensures more balanced stress on the lower template 100. Furthermore, the center-to-center distance between adjacent positioning slots 110 within the same row is equal, and the equidistant spacing between the positioning slots 110 in each row facilitates standardized operation and automated integration.

[0032] In some embodiments, a first snap fastener 120 is provided on the lower template 100; a second snap fastener 220 is provided on the upper template 200, and the second snap fastener 220 matches the first snap fastener 120.

[0033] In this embodiment, a first snap-fit ​​fastener 120 is provided on the lower template 100. It should be noted that the lower template 100 in this embodiment includes a template body at the bottom and a template boss provided on the template body. The size of the template boss is smaller than that of the template body, thereby providing installation space for the first snap-fit ​​fastener 120 around the template body. At the same time, a second snap-fit ​​fastener 220 is provided on the upper template 200 at a position opposite to the first snap-fit ​​fastener 120. During the pressing of the flat transformer, the first snap-fit ​​fastener 120 and the second snap-fit ​​fastener 220 cooperate to fix and press the upper and lower templates 100 together, so that the magnetic core positioning component 210 can cooperate with the positioning groove 110 to position and press the flat transformer in the positioning groove 110.

[0034] In some embodiments, there are two first snap fasteners 120, and the two first snap fasteners 120 are symmetrically arranged on both sides of the lower template 100.

[0035] In this embodiment, the first snap-fit ​​fastener 120 is preferably disposed on both sides of the lower template 100 along its length. Correspondingly, the second snap-fit ​​fastener 220 is located on both sides of the upper template 200 along its length. The first snap-fit ​​fastener 120 and the second snap-fit ​​fastener 220 on both sides facilitate the locking operation of the pressure-holding fixture from both sides. The two first snap-fit ​​fasteners 120 can further ensure that the upper and lower templates 100 do not loosen after the mold is closed, so that the upper and lower templates 100 are firmly locked, thereby achieving the pressing effect on the upper magnetic core 10, the PCB board 20 and the lower magnetic core 30.

[0036] In some embodiments, the lower template 100 is provided with a positioning hole 130; the upper template 200 is provided with a positioning pin 230, and the positioning pin 230 matches the positioning hole 130.

[0037] In this embodiment, to ensure precise guidance and repeatability of the upper and lower templates 100 during mold closing, a positioning hole 130 is provided on the lower template 100, and a positioning pin 230 is provided on the upper template 200 at a position relative to the positioning hole 130. When the upper and lower templates 100 are closed, the positioning pin 230 can be vertically inserted into the positioning hole 130. That is, by providing the positioning hole 130 and the positioning pin 230, the upper and lower templates 100 can be precisely positioned when the mold is closed, ensuring that the magnetic core positioning component 210 and the positioning groove 110 are precisely aligned, preventing misalignment that could lead to pressure deviation or product damage.

[0038] In some embodiments, there are four positioning holes 130, with every two positioning holes 130 positioned opposite each other on both sides of the first snap fastener 120.

[0039] In this embodiment, four positioning holes 130 are preferably provided, and two positioning holes 130 are provided on both sides of each first snap fastener 120. Correspondingly, the number of positioning pins 230 is also preferably four. It should be noted that the four positioning holes 130 and the positioning pins 230 cooperate with each other to further enhance the positioning effect during the mold closing process of the upper and lower templates 100. When the mold is closed, the positioning pins 230 are inserted into the corresponding positioning holes 130 to prevent misalignment of the upper and lower templates 100, ensure the precise alignment of each component in the flat plate transformer, and improve the yield rate of the finished transformer.

[0040] like Figure 3 As shown, in some embodiments, the magnetic core positioning component 210 includes: a magnetic core positioning pin 213, which is vertically inserted into the upper template 200; a positioning boss 212, which is located at one end of the magnetic core positioning pin 213 near the lower template 100, and pins 211 are correspondingly provided at both ends of the positioning boss 212 near the lower template 100. When the flat transformer is pressed, the positioning boss 212 abuts against the upper magnetic core 10 in the flat transformer, and the pins 211 abut against the PCB board 20 in the flat transformer.

[0041] In this embodiment, the magnetic core positioning pin 213 serves as the main support, fixing the positioning boss 212 and the ejector pin 211 to the upper template 200. During mold closing, the lower surface of the positioning boss 212 directly presses against the center area of ​​the top surface of the upper magnetic core 10, providing the main pressure for pressing the magnetic core. At the same time, the ejector pins 211, fixed at both ends of the bottom surface of the positioning boss 212, move downwards, and their ends precisely press against the upper surface of the PCB board 20 extending from both sides of the upper and lower magnetic cores. This not only further presses the PCB board 20 and the lower magnetic core 30 together, but also effectively prevents the sides of the PCB board 20 from warping upwards, ensuring the bonding effect between the magnetic core and the PCB board 20 interface.

[0042] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "a," "an," "the," and similar words used in this application do not indicate quantity limitation and may indicate singular or plural. The terms "comprising," "including," "having," and any variations thereof used in this application are intended to cover non-exclusive inclusion. The terms "connected," "linked," "coupled," and similar words used in this application are not limited to physical or mechanical connections but include electrical connections, whether direct or indirect. The term "multiple" used in this application refers to two or more, and "and / or" describes the relationship between related objects, indicating that three relationships may exist. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The terms "first," "second," "third," etc. used in this application are merely to distinguish similar objects and do not represent a specific ordering of objects.

[0044] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications or improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A pressure-holding fixture for a flat-plate transformer, characterized in that, include: The lower template has positioning slots for placing flat transformers; The upper template is set correspondingly to the lower template, and the upper template is provided with a magnetic core positioning component, which is set correspondingly to the positioning groove for pressing the flat transformer; and the magnetic core positioning component is provided with a pin for cooperating to press the PCB board extending from the upper and lower magnetic cores on both sides of the flat transformer.

2. The pressure-holding fixture for a flat-plate transformer according to claim 1, characterized in that, The four corners of the bottom of the positioning groove are provided with protrusions; The top surface of the protrusion is used to place the PCB board in the planar transformer, and the side wall of the protrusion is correspondingly engaged with the lower magnetic core in the planar transformer.

3. The pressure-holding fixture for a flat-plate transformer according to claim 2, characterized in that, A first positioning element is provided on one side of the positioning groove, and a second positioning element is provided on the other side. The first positioning component and the second positioning component cooperate to engage the two ends of the flat transformer.

4. The pressure-holding fixture for a flat-plate transformer according to claim 3, characterized in that, The number of the first positioning elements is two, and a first opening is provided between the two first positioning elements.

5. The pressure-holding fixture for a flat-plate transformer according to claim 1, characterized in that, The number of positioning slots is multiple, and the multiple positioning slots are arranged in two rows on the lower template, with equal intervals between each row of positioning slots.

6. The pressure-holding fixture for a flat-plate transformer according to claim 1, characterized in that, The lower template is provided with a first buckle fastener; The upper template is provided with a second buckle fastener, which matches the first buckle fastener.

7. The pressure-holding fixture for a flat-plate transformer according to claim 6, characterized in that, There are two first buckle fasteners, and the two first buckle fasteners are symmetrically arranged on both sides of the lower template.

8. The pressure-holding fixture for a flat-plate transformer according to claim 1, characterized in that, The lower template is provided with positioning holes; The upper template is provided with a positioning pin, and the positioning pin matches the positioning hole.

9. The pressure-holding fixture for a flat-plate transformer according to claim 6, characterized in that, The number of positioning holes is four, and every two positioning holes are arranged opposite each other on both sides of the first buckle fastener.

10. The pressure-holding fixture for a flat-plate transformer according to any one of claims 1-9, characterized in that, The magnetic core positioning component includes: The magnetic core positioning pin is vertically inserted into the upper template. A positioning boss is provided at one end of the magnetic core positioning pin near the lower template, and the two ends of the positioning boss near the lower template are correspondingly provided with the ejector pins. When the flat transformer is pressed, the positioning boss abuts against the upper magnetic core in the flat transformer, and the ejector pins abut against the PCB board in the flat transformer.

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