Anti-falling false PIN structure and plug-in inductor

Abstract

The utility model discloses an anti-drop false PIN structure and a plug-in inductor, the anti-drop false PIN structure comprises at least one false PIN body and a base, the number of the false PIN body is at least one, the false PIN body comprises a plugging end and a clamping end, the plugging end is used for plugging of a PCB, and the periphery of the clamping end is provided with a first clamping part; the bottom of the base is provided with at least one plugging hole plugged with the clamping end, a second clamping part is arranged in the plugging hole, the second clamping part is used for being matched and clamped with the first clamping part, the plug-in inductor is installed on the anti-falling false PIN structure, and the first clamping part of the false PIN body is matched and clamped with the second clamping part of the plugging hole, so that the clamping stability is improved, and the plug-in inductor is installed on the anti-falling false PIN structure. Therefore, the false PIN body is stably connected with the base in the wave soldering process, and falling or loosening caused by high temperature is avoided. The utility model is suitable for the technical field of electronics.

Description

Technical Field

[0001] This utility model relates to the technical field of electronic technology, specifically to a design for an anti-fraud PIN structure and a plug-in inductor. Background Technology

[0002] In recent years, with the widespread application of solar photovoltaic inverters, charging piles, UPS, and energy storage devices, inductor products have faced greater challenges, with increasingly diversified requirements in terms of product structure and performance. As photovoltaic power generation efficiency continues to improve and the scale of photovoltaic power plants continues to expand, the demand for photovoltaic power generation and energy storage is also rapidly increasing. In power storage converters (PCS), balancing inductors are mainly used on the DC side to filter out high-frequency pulsating currents on the DC side, ensuring a stable DC voltage output, while also regulating the rate of current change to improve system response performance.

[0003] In through-hole inductors, dummy pins without electrical function are often used to connect to the PCB board in order to improve mechanical strength, balance structural design and adapt to standardized packaging. During wave soldering, the dummy pins are prone to loosening or falling off from the base plate material due to high temperature, which affects the fixing effect of the through-hole inductor and poses a risk of inductor failure. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention provides a structure and inductor for preventing dummy pins from falling off, solving the problem of dummy pins becoming loose or falling off from the base plate due to high temperatures.

[0005] According to a first aspect of the present invention, an anti-slip PIN structure includes:

[0006] The dummy PIN body is provided with at least one, the dummy PIN body includes a plug end and a snap end, the plug end is used to plug into the PCB board, and the snap end has a first snap part on its outer periphery;

[0007] The base has at least one insertion hole at its bottom that engages with the snap-fit ​​end. The insertion hole has a second snap-fit ​​part inside, which is used to match and snap-fit ​​with the first snap-fit ​​part.

[0008] According to an embodiment of the present invention, a dummy PIN prevention structure has at least the following beneficial effects:

[0009] The anti-detachment dummy PIN provided by this utility model is achieved by matching and engaging the first engaging part of the dummy PIN body with the second engaging part of the insertion hole. During wave soldering, the first engaging part can always maintain contact with the corresponding second engaging part, increasing the mutual force and achieving a stable mechanical connection of the PIN pin. This ensures the reliability of the insertion and effectively prevents the dummy PIN from loosening or falling off due to high temperature during wave soldering, thus ensuring the fixing effect of the plug-in inductor and improving the safety and long-term stability of use.

[0010] According to some embodiments of the present invention, the first snap-fit ​​portion is provided with a snap-fit ​​groove recessed on the outer periphery of the snap-fit ​​end, and the second snap-fit ​​portion is provided with a snap-fit ​​platform protruding on the inner periphery of the insertion hole, the snap-fit ​​platform engaging with the snap-fit ​​groove.

[0011] According to some embodiments of the present invention, the snap-fit ​​groove is an annular groove structure, and the snap-fit ​​platform is an annular boss structure.

[0012] According to some embodiments of the present invention, the first latching portion includes a first latching segment and a second latching segment coaxially connected to each other. The first latching segment is coaxially connected to the dummy PIN body, and the outer diameter of the first latching segment is smaller than the outer diameter of the second latching segment and the dummy PIN body, respectively.

[0013] According to some embodiments of the present invention, the outer diameter of the second snap-fit ​​segment is larger than the outer diameter of the dummy PIN.

[0014] According to some embodiments of this utility model, the dummy PIN body is an integrally molded structure.

[0015] According to some embodiments of the present invention, the base further includes at least one limiting member protruding from the bottom surface of the base, wherein the height of the limiting member protruding from the base is less than the length of the anti-detachment dummy PIN extending out of the base.

[0016] According to the second aspect of the present invention, the plug-in inductor includes:

[0017] The aforementioned anti-derailment PIN structure;

[0018] An inductor body is mounted on top of the base of the anti-derailment PIN structure.

[0019] According to some embodiments of the present invention, the inductor body is provided with at least two electrode pins, the base is provided with at least two connecting holes, at least two of the electrode pins are led out from the bottom of the base through at least two of the connecting holes, and the length of the at least two electrode pins extending out of the base is the same as the length of at least one dummy pin extending out of the base.

[0020] According to some embodiments of the present invention, at least two of the electrode PINs and at least one of the dummy PINs are evenly spaced apart.

[0021] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 A cross-sectional view of the insertion of the dummy PIN body and the insertion hole in one embodiment of the anti-dislodgement dummy PIN structure provided by this utility model.

[0024] Figure 2 A cross-sectional view of the insertion hole of an embodiment of an anti-fraud PIN structure provided by this utility model;

[0025] Figure 3 A schematic diagram of the structure of a dummy PIN body in one embodiment of an anti-derailment dummy PIN structure provided by this utility model;

[0026] Figure 4 A schematic diagram of one embodiment of the plug-in inductor provided by this utility model;

[0027] Icon labels:

[0028] 100 dummy PIN; 110 first card connector; 111 card slot; 112 first card connector segment; 113 second card connector segment;

[0029] Insertion hole 200; second snap-fit ​​part 210; snap-fit ​​platform 211; third snap-fit ​​section 212; fourth snap-fit ​​section 213;

[0030] Base 300; limiting component 310; connecting hole 320;

[0031] Inductor body 400; electrode PIN 410. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0035] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0036] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of this utility model, not all embodiments.

[0037] In recent years, with the widespread application of solar photovoltaic inverters, charging piles, UPS, and energy storage devices, inductor products have faced greater challenges, with increasingly diversified requirements in terms of product structure and performance. As photovoltaic power generation efficiency continues to improve and the scale of photovoltaic power plants continues to expand, the demand for photovoltaic power generation and energy storage is also rapidly increasing. In power storage converters (PCS), balancing inductors are mainly used on the DC side to filter out high-frequency pulsating currents on the DC side, ensuring a stable DC voltage output, while also regulating the rate of current change to improve system response performance.

[0038] In through-hole inductors, dummy pins without electrical function are often used to connect to the PCB board in order to improve mechanical strength, balance structural design and adapt to standardized packaging. During wave soldering, the dummy pins are prone to loosening or falling off from the base plate material due to high temperature, which affects the fixing effect of the through-hole inductor and poses a risk of inductor failure.

[0039] To address the aforementioned issues, this invention proposes an anti-dummy PIN structure and plug-in inductor, which effectively solves the problem of dummy PIN pins becoming loose or falling off from the base plate due to high temperatures.

[0040] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4The present invention provides an anti-slip PIN structure and plug-in inductor, which are described in the following embodiments:

[0041] Reference Figure 1 As shown, the anti-derailment dummy PIN structure of this utility model embodiment includes at least one dummy PIN body 100 and a base 300. In this embodiment, two dummy PIN bodies 100 are provided and installed at the bottom of the base 300, which plays a role in improving mechanical strength, balancing structural design and adapting to standardized packaging. In other embodiments, the number of dummy PIN bodies 100 can be set according to actual usage requirements.

[0042] Among them, reference Figure 3 The dummy PIN 100 includes a plug-in end and a snap-in end. The plug-in end is used to plug into the PCB board, and the snap-in end is used to snap into the base 300. The dummy PIN 100 enables the base 300 to be stably plugged into the PCB board, achieving a good fixing effect.

[0043] Reference Figure 1 and Figure 3 As shown, a first snap-fit ​​portion 110 is provided on the outer periphery of the snap-fit ​​end. The first snap-fit ​​portion 110 protrudes from the snap-fit ​​end. The base 300 is provided with at least one insertion hole 200 for engaging with the snap-fit ​​end. A second snap-fit ​​portion 210 is provided inside the insertion hole 200. The second snap-fit ​​portion 210 is used to engage with the first snap-fit ​​portion 110.

[0044] Since the base 300 is a plastic skeleton structure, it is easy for the base 300 and the dummy PIN 100 to loosen during wave soldering due to the deformation of the material caused by temperature. In this embodiment, a first snap-fit ​​part 110 protruding from the snap-fit ​​end of the dummy PIN is provided to ensure that the first snap-fit ​​part 110 can still abut against the insertion hole 200 under high temperature conditions. Through the cooperation of the first snap-fit ​​part 110 and the second snap-fit ​​part 210, the snap-fit ​​and fixing stability of the dummy PIN 100 on the base 300 is effectively enhanced, ensuring that the dummy PIN 100 does not loosen or fall off during high temperature soldering, thus effectively improving stability and long-term reliability.

[0045] Specifically, regarding the structure of the first latching portion 110: the first latching portion 110 includes a first latching segment 112 and a second latching segment 113 coaxially connected. The first latching segment 112 is coaxially connected to the dummy PIN body 100. The outer diameter of the first latching segment 112 is smaller than the outer diameter of the second latching segment 113 and the dummy PIN body 100, respectively. The outer diameter of the second latching end is larger than the outer diameter of the dummy PIN body 100, thereby causing the second latching segment 113 to extend beyond the dummy PIN body 100 to form a protrusion. The bottom surface of the protrusion, the outer periphery of the first latching segment 112, and the top surface of the dummy PIN body 100 cooperate to form a latching groove 111 recessed in the outer periphery of the latching end.

[0046] Among them, the dummy PIN body 100, the first snap-fit ​​section 112 and the second snap-fit ​​section 113 are all cylindrical structures, and the snap-fit ​​groove 111 is an annular groove structure. Compared with other structures, the cylindrical structure is not directional in the circumferential direction, so there is no need to align it in the circumferential direction when snapping, which facilitates snapping without affecting the snapping and fixing effect.

[0047] In some other embodiments, the first snap-fit ​​portion 110 may be of other shapes and structures, as long as it can satisfy the function of limiting along the axial direction. For example, the first snap-fit ​​portion 110 may be a knob structure.

[0048] Reference Figure 2 As shown, the structure of the second latching part 210 is as follows: The second latching part 210 includes a third latching section 212 and a fourth latching section 213 coaxially connected. The third latching section 212 is coaxially connected to the insertion hole 200. The inner diameter of the third latching section 212 is smaller than the inner diameter of the fourth latching section 213 and the insertion hole 200, respectively. The inner diameter of the fourth latching section 213 is larger than the inner diameter of the insertion hole 200. This allows the bottom surface of the fourth latching section 213, the inner periphery of the third latching section 212, and the top surface of the insertion hole 200 to cooperate to form a latching platform 211 protruding from the inner periphery of the insertion hole 200.

[0049] Among them, the insertion hole 200 and the third snap-fit ​​section 212 are through holes, the fourth snap-fit ​​section 213 is a countersunk hole, and the formed snap-fit ​​platform 211 is an annular boss structure. The snap-fit ​​platform 211 matches and engages with the snap-fit ​​groove 111. Since the second snap-fit ​​part 210 is not directional in the axial direction, it is not necessary to align in the circumferential direction when snapping, which facilitates snapping.

[0050] In some other embodiments, the second locking part 210 may be of other shapes and structures, as long as it can satisfy the function of limiting along the axial direction. For example, the second locking part 210 may be a clearance groove structure that cooperates with the knob.

[0051] The dummy PIN 100 in this embodiment has a simple structure and is a one-piece molded structure. The entire molding process of the dummy PIN 100 can be completed in one go through a single mold, reducing production steps and material waste, effectively reducing production costs and improving production efficiency. At the same time, the integrated design makes the dummy PIN 100 more rigid, which is conducive to improving the stability and long-term reliability of the anti-detachment dummy PIN structure.

[0052] Reference Figure 4As shown, at least one limiting member 310 is also provided on the bottom of the base 300. In this embodiment, there are two limiting members 310 and they are spaced apart. The limiting member 310 is a limiting strip structure connected to the bottom surface of the base 300. On the one hand, it restricts the position of the base 300 inserted into the PCB board to prevent the base 300 from being directly connected to the PCB board. On the other hand, it strengthens the rigidity of the base 300 and extends its service life. The height of the limiting member 310 protruding from the base 300 is less than the length of the dummy PIN 100 extending out of the base 300, so as not to hinder the insertion of the dummy PIN 100 into the PCB board, causing the dummy PIN 100 to lose its insertion and fixing effect.

[0053] This utility model also proposes a plug-in inductor, as shown in the reference. Figure 4 As shown, the plug-in inductor includes an inductor body 400 and an anti-disconnection dummy PIN structure provided in the above embodiment. The inductor body 400 is mounted on the top of the base 300 of the anti-disconnection dummy PIN structure. The inductor body 400 and the base 300 are connected to the PCB board as a whole through the dummy PIN body 100.

[0054] The inductor body 400 also includes at least two electrode pins 410. In this embodiment, there are two electrode pins 410. One end of the electrode pin 410 is connected to the inductor body 400, and the other end is used for plugging, thereby realizing the electrical connection between the inductor and the PCB board. The base 300 is provided with two connecting holes 320 so that the electrode pin 410 can be led out from the bottom of the base 300 through the connecting holes 320, thereby facilitating connection to the PCB board.

[0055] In order to ensure that the electrode PIN410 and the dummy PIN 100 are simultaneously inserted into the PCB board without affecting the electrical connection and insertion fixation effect, the length of the electrode PIN410 extending out of the base 300 is the same as the length of the dummy PIN 100 extending out of the base 300.

[0056] Furthermore, the electrode PIN410 and the dummy PIN 100 are evenly spaced on the base 300. The electrode PIN410 and the dummy PIN 100 cooperate with each other to balance the center of gravity of the plug-in inductor as a whole, so as to prevent the plug-in inductor from tilting after installation.

[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," 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 present invention. In this specification, the 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.

[0058] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A structure for preventing the removal of dummy pins, characterized in that, include: The dummy PIN body is provided with at least one, the dummy PIN body includes a plug end and a snap end, the plug end is used to plug into the PCB board, and the snap end has a first snap part on its outer periphery; The base has at least one insertion hole at its bottom that engages with the snap-fit ​​end. The insertion hole has a second snap-fit ​​part inside, which is used to match and snap-fit ​​with the first snap-fit ​​part.

2. The anti-slip PIN structure according to claim 1, characterized in that: The first snap-fit ​​portion is provided with a snap-fit ​​groove recessed on the outer periphery of the snap-fit ​​end, and the second snap-fit ​​portion is provided with a snap-fit ​​platform protruding on the inner periphery of the insertion hole, the snap-fit ​​platform engaging with the snap-fit ​​groove.

3. The anti-fraud PIN structure according to claim 2, characterized in that: The snap-fit ​​groove is an annular groove structure, and the snap-fit ​​platform is an annular boss structure.

4. The anti-slip PIN structure according to claim 3, characterized in that: The first latching portion includes a first latching segment and a second latching segment that are coaxially connected to each other. The first latching segment is coaxially connected to the dummy PIN body, and the outer diameter of the first latching segment is smaller than the outer diameter of the second latching segment and the dummy PIN body, respectively.

5. The anti-slip PIN structure according to claim 4, characterized in that: The outer diameter of the second snap-fit ​​segment is larger than the outer diameter of the dummy PIN.

6. The anti-slip PIN structure according to claim 1, characterized in that: The dummy PIN is a one-piece molded structure.

7. The anti-slip PIN structure according to claim 1, characterized in that: The base also includes at least one limiting member protruding from the bottom surface of the base, wherein the height of the at least one limiting member protruding from the base is less than the length of the anti-detachment dummy PIN extending out of the base.

8. A plug-in inductor, characterized in that, include: The anti-fraud PIN structure as described in any one of claims 1 to 7; An inductor body is mounted on top of the base of the anti-derailment PIN structure.

9. The plug-in inductor according to claim 8, characterized in that: The inductor body has at least two electrode pins, and the base has at least two connecting holes. At least two of the electrode pins extend out from the bottom of the base through at least two connecting holes, and the length of the at least two electrode pins extending out of the base is the same as the length of at least one dummy pin extending out of the base.

10. The plug-in inductor according to claim 9, characterized in that: At least two of the electrode pins are evenly spaced from at least one of the dummy pins.

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