Flexible connecting pin and assembly combination structure

Abstract

The utility model provides a kind of flexible connection PIN needle and assembly combination structure, it is related to semiconductor connecting piece technical field.The bending deformation design of buffer section in the flexible connection PIN needle in the present application can realize needle body absorbing assembly prestress and vibration stress in the direction of PCB and power module connection during assembly process, reduce installation stress and fatigue failure risk, and further guarantee the stability of its connection;The aperture of the inlet of the guide channel in the guider in the assembly combination structure in the present application is greater than the aperture of the interface, compared with the conventional way of directly inserting into the socket of PCB, it ensures that the interface range inserted during the assembly process of insertion section is larger, allows PIN needle and PCB aperture to have larger initial position tolerance during assembly process, reduces assembly difficulty, avoids damage of parts caused by hard contact, and at the same time, support seat and positioning section are arranged to cooperate positioning, ensure the assembly position stability of PIN needle body and provide stable support, improve the stability of assembly and connection.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor connector technology, and in particular to a flexible connector PIN and its assembly structure. Background Technology

[0002] With increasingly stringent emission regulations, vehicle electrification is an inevitable trend. Electric vehicles have a high degree of electrification and a high proportion of electronic components, making reliability a key issue that needs to be addressed in their development. Among these, the signal connection method of the power module, a core component of the motor controller, has become a challenge in reliability design.

[0003] Currently, the mainstream method for connecting power modules to PCBs is as follows: Figure 1 As shown, straight signal pins connect the power module and the PCB via soldering or interference fit. This approach has the following main risks: a long dimensional chain exists between the pin and the PCB via, making pin insertion difficult; after mating with the via, tolerances inevitably cause installation stress on the pin, reducing the reliability of the signal connection; and the pin has a high risk of vibration fatigue failure: because straight pins lack flexibility, they cannot absorb vibration displacement, making them prone to fatigue failure after vibration. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a flexible connection PIN pin and assembly structure to solve the related problems in the prior art.

[0005] To achieve the above and other related objectives, this utility model provides a flexible connecting PIN pin for connecting a PCB and a power module, comprising an insertion section, a buffer section, a positioning section and a connecting section arranged sequentially along the length of the pin body;

[0006] The insertion segment is used for insertion and connection to the PCB;

[0007] The buffer section is formed by at least one bending deformation to reduce assembly prestress and vibration stress;

[0008] The positioning section is used to fix and position the installation position of the needle body;

[0009] The connection segment is used to connect the power module.

[0010] Furthermore, the buffer section is bent back and forth at least once along its length to form a continuously bent wavy structure, with the bending direction alternating along the axial direction.

[0011] Furthermore, the buffer section is folded back in a plane at least once along its length to form a transversely bent L-shaped structure, with the bending direction perpendicular to the length direction of the needle body.

[0012] Furthermore, the buffer section has a spiral structure, with its spiral line rotating around the length of the needle body, and the absolute value of the spiral angle of the buffer section is greater than 0 degrees.

[0013] Furthermore, the body of the flexible connection PIN is made of copper alloy.

[0014] Furthermore, the outer peripheral surface of the positioning segment is provided with at least one elastic buckle protrusion, the elastic buckle protrusion protrudes outward along the radial direction of the positioning segment, and the top of the elastic buckle protrusion is provided with a guide slope.

[0015] This application also discloses an assembly structure, including the flexible connecting PIN pin as described above, and further comprising:

[0016] The support base and the positioning segment are fixedly fitted together;

[0017] A guide is provided with a guide channel running through it. The two ends of the guide channel are an inlet and a connector, respectively. The diameter of the inlet is larger than the diameter of the connector. The connector is aligned with a socket on the PCB. The insertion segment passes through the guide channel from the inlet and exits through the connector to be inserted into the socket on the PCB.

[0018] Furthermore, the guide channel, along the direction from the inlet to the outlet, sequentially includes a tapered channel section and a constant channel section;

[0019] The aperture of the tapered channel section gradually decreases along the axial direction to guide and correct the entry position of the insertion section.

[0020] The aperture of the constant channel segment remains constant to guide the auxiliary insertion segment into the socket of the PCB.

[0021] Furthermore, the outer peripheral surface of the positioning segment is provided with at least one elastic buckle protrusion, the elastic buckle protrusion protrudes outward along the radial direction of the positioning segment, and the top of the elastic buckle protrusion is provided with a guide slope.

[0022] The support base is provided with an installation notch and a limiting groove. The installation notch and the main body of the positioning section are engaged. The limiting groove is arranged perpendicular to the installation notch. The elastic buckle protrusion is engaged with the limiting groove.

[0023] Furthermore, the support base and the positioning section are connected by injection molding as a single unit.

[0024] As described above, the flexible connecting PIN pin and assembly structure of this utility model have at least the following beneficial effects, including but not limited to:

[0025] In this application, the flexible connection PIN pin enhances its corresponding zone advantages and overall reliability through segmented design and independent optimization of each segment. The bending deformation design of the buffer segment allows the pin body to absorb assembly pre-stress and vibration stress in the connection direction between the PCB and the power module during assembly. The flexible deformation capability of the buffer segment disperses vibration energy, reducing installation stress and fatigue failure risk, thereby ensuring connection stability. The positioning segment design achieves positioning and fixation of the PIN pin body during assembly, ensuring a stable electrical connection.

[0026] This application also provides an assembly structure in which the opening diameters at both ends of the guide channel in the guide are inconsistent, and the diameter of the inlet is larger than that of the interface. Compared with the conventional method of directly inserting into the PCB board, this can ensure a larger range of interfaces that can be inserted during the assembly of the insertion section, and allow for a larger initial positional tolerance between the PIN and the PCB opening during the assembly process. This reduces the assembly difficulty of the PCB and the PIN while avoiding damage to components caused by hard contact. At the same time, a support base is set to cooperate with the positioning section to ensure the stable assembly position of the PIN body and provide stable support, thereby improving the stability of assembly and connection. Attached Figure Description

[0027] Figure 1 This is a schematic diagram showing the connection between the PCB and the power module in related technologies;

[0028] Figure 2 The diagram shown is one of the structural schematic diagrams of the flexible connection PIN pin provided in the embodiments of this application;

[0029] Figure 3 The second schematic diagram shows the structure of the flexible connection PIN pin provided in the embodiment of this application;

[0030] Figure 4 The third schematic diagram shows the structure of the flexible connection PIN pin provided in the embodiment of this application;

[0031] Figure 5 The diagram shown is a structural schematic of the assembly structure provided in the embodiment of this application.

[0032] Figure 6 The diagram shown is a schematic representation of the internal structure of the guide provided in an embodiment of this application.

[0033] Icons: 01. PCB, 02. Power module

[0034] 1. Flexible connecting pin; 11. Insertion section; 12. Buffer section; 13. Positioning section; 131. Elastic snap-fit ​​protrusion; 14. Connecting section.

[0035] 2. Support base; 21. Mounting notch; 22. Limiting groove.

[0036] 3. Guide, 31. Guide channel, 311. Gradual narrowing channel section, 312. Constant channel section. Detailed Implementation

[0037] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0038] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0039] Please refer to Figure 2 and Figure 3 This application discloses a flexible connecting PIN pin 1 for connecting PCB 01 and power module 02, including an insertion section 11, a buffer section 12, a positioning section 13 and a connecting section 14 arranged sequentially along the length of the pin body; wherein, the insertion section 11 is used to insert and connect to PCB 01; the buffer section 12 is formed by at least one bending deformation to reduce assembly prestress and vibration stress; the positioning section 13 is used to fix and position the installation position of the pin body; and the connecting section 14 is used to connect to power module 02.

[0040] It should be noted that the PCB01 board is provided with a socket for connection with the flexible connection PIN 1. Its power module 02 is a core component of the motor controller. It is worth mentioning that in this application, the flexible connection PIN 1 improves its corresponding partition advantages and overall reliability through segmented design and independent optimization of each segment. Among them, the bending deformation design of the buffer section 12 can absorb the assembly pre-stress and vibration stress in the connection direction between PCB01 and power module 02 during the assembly process. The flexible deformation capability of the buffer section 12 can disperse vibration energy, reduce installation stress and fatigue failure risk, and thus ensure the stability of its connection. The design of the positioning section 13 is to achieve positioning and fixation of the PIN body during the assembly process, ensuring the stable electrical connection of the PIN.

[0041] Please refer to Figure 2 The buffer section 12 is bent back and forth at least once along its length to form a continuously bent wave-shaped structure, and the bending direction alternates along the axial direction.

[0042] Specifically, its buffer section 12 is reciprocated in the length direction, forming a spring-like wave structure in the spatial direction. In the axial direction, its first bend bends to one side of the axis (such as the left side), and the second bend bends to the other side of the axis (such as the right side), forming an alternating bending pattern. The wave structure disperses the concentrated stress evenly to each bending section through the coordinated deformation of multiple bending points, and the elastic deformation range is large, resulting in a good stress dispersion effect.

[0043] Please refer to Figure 3 The buffer section 12 is folded back at least once along its length to form a transversely bent L-shaped structure, with the bending direction perpendicular to the length direction of the needle body.

[0044] Specifically, the buffer section 12 is spatially bent at both ends to form a quasi-vertical bending structure, which is a transversely bent L-shaped structure. In this embodiment, the bending structure satisfies a certain flexible damping function, and its corresponding structural form is relatively simple, which significantly reduces the processing difficulty and cost. It is especially suitable for application scenarios that are sensitive to structural complexity and production costs, and achieves an optimized balance between performance and processing cost.

[0045] Please refer to Figure 4 The buffer section 12 has a spiral structure, and its spiral line rotates around the length of the needle body. The absolute value of the spiral angle of the buffer section 12 is greater than 0 degrees.

[0046] Specifically, the buffer section 12 is designed in the form of a spiral structure, which can additionally absorb and dampen stress in different directions. It not only provides buffering in the axial direction but also further absorbs and disperses stress in the radial and torsional directions, resulting in a more comprehensive buffering effect. A helical angle with an absolute value greater than 0° is a necessary condition for achieving the elastic function of the spiral buffer section 12. In specific applications, the helical angle can be reasonably selected according to the specific usage conditions. It should be noted that the instruction manual includes... Figure 6 The diagram only shows the state of the needle body buffer section 12 as a spiral structure; the other insertion section 11, positioning section 13, and connecting section 14 are not fully drawn.

[0047] In some embodiments, the body of the flexible connection PIN 1 is made of copper alloy.

[0048] Specifically, the PIN needle body is made of copper alloy, which maintains good conductivity and also has good fatigue resistance, making it suitable for high-frequency stress applications.

[0049] Please refer to Figure 5 and Figure 6 This application further discloses an assembly structure including the aforementioned flexible connecting PIN pin 1, possessing all its beneficial effects. It also includes a support base 2 and a guide 3, the support base 2 and the positioning segment 13 being fixedly fitted together; the guide 3 is provided with a through guide channel 31, the two ends of the guide channel 31 being an inlet and a connector, respectively, the diameter of the inlet being larger than the diameter of the connector, the connector engaging with the insertion hole of PCB01, and the insertion segment 11 passing through the guide channel 31 from the inlet and exiting through the connector to be inserted into the insertion hole of PCB01.

[0050] It is worth noting that the opening diameters at both ends of the guide channel 31 in the guide 3 of the assembly assembly structure are inconsistent. The diameter of the inlet is larger than that of the interface. Compared with the conventional method of directly inserting into the PCB01 board, this ensures that the insertion section 11 can be inserted into a larger interface range during the assembly process. It allows for a larger initial positional tolerance between the PIN and the PCB01 opening during the assembly process, reducing the assembly difficulty of PCB01 and PIN, and avoiding damage to components caused by hard contact. At the same time, the support base 2 and the positioning section 13 are set to cooperate in positioning, ensuring the stable assembly position of the PIN body and providing stable support, thus improving the stability of assembly and connection.

[0051] Please refer to Figure 6The guide channel 31 includes a tapered channel section 311 and a constant channel section 312 in sequence along the direction from the inlet to the outlet. The aperture of the tapered channel section 311 gradually decreases along the axial direction to guide and correct the entry position of the insertion section 11. The aperture of the constant channel section 312 remains constant to guide the auxiliary insertion section 11 into the socket of PCB01.

[0052] Specifically, the guide channel 31 is designed as a two-section structure. The tapered channel section 311 gradually narrows in diameter to form a trumpet shape. The initial offset of the insertion section 11 is effectively corrected through the geometric constraints of the tapered shape. Then, the constant channel section 312 further constrains and guides the insertion, ensuring accuracy and preventing connection deformation or equipment damage caused by incorrect insertion angles due to oblique insertion. This not only reduces assembly difficulty but also achieves staged correction and precise insertion, guaranteeing connection accuracy. In actual assembly, the opening of the constant channel section 312 has the same diameter as the opening on PCB01, and the alignment is consistent for easy insertion.

[0053] Please refer to Figure 5 The outer peripheral surface of the positioning segment 13 is provided with at least one elastic buckle protrusion 131, the elastic buckle protrusion 131 protrudes outward along the radial direction of the positioning segment 13, and the top of the elastic buckle protrusion 131 is provided with a guide slope; the support base 2 is provided with an installation notch 21 and a limiting groove 22, the installation notch 21 and the body of the positioning segment 13 are engaged, the limiting groove 22 is arranged perpendicular to the installation notch 21, and the elastic buckle protrusion 131 is engaged with the limiting groove 22.

[0054] Specifically, the positioning section 13 and the mounting notch 21 on the support base 2 engage with each other to form a preliminary radial installation and fixation. The shape of the mounting notch 21 matches the cross-sectional shape of the body. The elastic buckle protrusion 131 on the positioning section 13 of the needle body is a radially extending semi-cylindrical or trapezoidal structure, which can be evenly distributed along the outer circumference of the positioning section 13. The limiting groove 22 on the support base 2 is arranged perpendicular to the mounting notch 21. The elastic buckle protrusion 131 and the limiting groove 22 engage with each other to achieve circumferential limiting. The guide slope on the top of the elastic buckle protrusion 131 facilitates insertion. By setting the cooperation between the elastic buckle protrusion 131 and the limiting structure of the support base 2, the rapid and accurate positioning and reliable fixation of the PIN needle are achieved. Without the need for complex tools and high-precision operation, its assembly efficiency and vibration resistance are significantly improved.

[0055] In some embodiments, the support base 2 and the positioning segment 13 are connected by injection molding.

[0056] In this embodiment, the support base 2 and the positioning section 13 of the needle body are connected by injection molding technology, which improves the reliability of the connection, simplifies the manufacturing and assembly process, and makes it lighter and cheaper, making it suitable for application scenarios that require compact structure and long-term stability.

[0057] In summary, the flexible connection PIN 1 in this application enhances its corresponding partition advantages and overall reliability through segmented design and independent optimization settings for each segment. The bending deformation design of the buffer section 12 allows the pin body to absorb the assembly pre-stress and vibration stress in the connection direction between PCB01 and power module 02 during assembly. The flexible deformation capability of the buffer section 12 can disperse vibration energy, reduce installation stress and fatigue failure risk, and thus ensure the stability of the connection. The design of the positioning section 13 enables the pin body to be positioned and fixed during assembly, ensuring a stable electrical connection of the pin. This application also provides an assembly combination structure in which the opening diameters at both ends of the guide channel 31 in the guide 3 are inconsistent, with the inlet diameter being larger than the outlet diameter. Compared with the conventional method of directly inserting into the PCB01 board, this ensures a larger insertion range of the insertion section 11 during assembly, allowing for a larger initial positional tolerance between the pin and the PCB01 opening during assembly. This reduces the assembly difficulty of PCB01 and pin while avoiding damage to components caused by hard contact. At the same time, the support base 2 cooperates with the positioning section 13 to ensure the stable assembly position of the pin body and provide stable support, improving the stability of assembly and connection.

[0058] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

[0059] Throughout this description, numerous specific details, such as examples of components and / or methods, are provided to provide a complete understanding of embodiments of this application. However, those skilled in the art will recognize that embodiments of this invention may be practiced without one or more of these specific details or by other devices, systems, components, methods, parts, materials, components, etc. In other instances, well-known structures, materials, or operations have not been specifically shown or described in detail to avoid obscuring aspects of embodiments of this application.

[0060] Throughout this specification, references to "an embodiment," "an embodiment," or "a specific embodiment" mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of the present invention, but not necessarily in all embodiments. Therefore, the various representations of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout the specification do not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic of any specific embodiment of the present invention can be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments described herein may be based on the teachings herein and will be considered part of the spirit and scope of the present invention.

[0061] It should also be understood that one or more of the elements shown in the figures may be implemented in a more separate or more integrated manner, or may even be removed because they are inoperable in certain circumstances or provided because they may be useful for a particular application.

[0062] Furthermore, unless otherwise expressly stated, any arrows in the accompanying drawings should be considered illustrative only and not limiting. Additionally, unless otherwise stated, the term "or" as used herein is generally intended to mean "and / or". Where a term is anticipated to provide a separation or combination capability that is unclear, a combination of components or steps will also be considered as indicated.

[0063] As used herein and throughout the claims below, unless otherwise specified, “a” and “the” include the plural references. Similarly, as used herein and throughout the claims below, unless otherwise specified, “in” means “in” and “on”.

[0064] The above description of the embodiments shown in this utility model (including the content in the abstract of the specification) is not intended to be an exhaustive enumeration or to limit the utility model to the precise forms disclosed herein. Although specific embodiments and examples of the utility model have been described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the utility model, as will be recognized and understood by those skilled in the art. As indicated, these modifications can be made to the utility model in accordance with the above description of the embodiments of this application, and such modifications will be within the spirit and scope of the utility model.

[0065] This document has generally described the systems and methods in detail to aid in understanding the present invention. Furthermore, various specific details have been set forth to provide a general understanding of the embodiments of this application. However, those skilled in the art will recognize that embodiments of the present invention can be practiced without one or more specific details, or using other devices, systems, accessories, methods, components, materials, parts, etc. In other instances, well-known structures, materials, and / or operations have not been specifically shown or described in detail to avoid obscuring various aspects of the embodiments of this application.

Claims

1. A flexible connector pin for connecting a PCB and a power module, characterized in that, It includes an insertion section, a buffer section, a positioning section, and a connecting section arranged sequentially along the length of the needle body; The insertion segment is used for insertion and connection to the PCB; The buffer section is formed by at least one bending deformation to reduce assembly prestress and vibration stress; The positioning section is used to fix and position the installation position of the needle body; The connection segment is used to connect the power module.

2. The flexible connecting PIN pin according to claim 1, characterized in that: The buffer section bends back and forth at least once along its length to form a continuously wavy structure, with the bending direction alternating along the axial direction.

3. The flexible connecting PIN pin according to claim 1, characterized in that: The buffer section is folded back in a plane at least once along its length to form a transversely bent L-shaped structure, with the bending direction perpendicular to the length direction of the needle body.

4. A flexible connecting PIN pin according to claim 1, characterized in that: The buffer section has a spiral structure, with its spiral line rotating around the length of the needle body. The absolute value of the spiral angle of the buffer section is greater than 0 degrees.

5. A flexible connecting PIN pin according to claim 1, characterized in that: The body of the flexible connection PIN is made of copper alloy.

6. A flexible connecting PIN pin according to claim 1, characterized in that: The outer peripheral surface of the positioning section is provided with at least one elastic buckle protrusion, the elastic buckle protrusion protrudes outward along the radial direction of the positioning section, and the top of the elastic buckle protrusion is provided with a guide slope.

7. An assembly structure comprising the flexible connecting pin as described in any one of claims 1-6, characterized in that, Also includes: The support base and the positioning segment are fixedly fitted together; A guide is provided with a guide channel running through it. The two ends of the guide channel are an inlet and a connector, respectively. The diameter of the inlet is larger than the diameter of the connector. The connector is aligned with a socket on the PCB. The insertion segment passes through the guide channel from the inlet and exits through the connector to be inserted into the socket on the PCB.

8. The assembly structure according to claim 7, characterized in that: The guide channel, along the direction from the inlet to the outlet, includes a tapering channel section and a constant channel section in sequence. The aperture of the tapered channel section gradually decreases along the axial direction to guide and correct the entry position of the insertion section. The aperture of the constant channel segment remains constant to guide the auxiliary insertion segment into the socket of the PCB.

9. The assembly structure according to claim 7, characterized in that: The outer peripheral surface of the positioning section is provided with at least one elastic buckle protrusion, the elastic buckle protrusion protrudes outward along the radial direction of the positioning section, and the top of the elastic buckle protrusion is provided with a guide slope. The support base is provided with an installation notch and a limiting groove. The installation notch and the main body of the positioning section are engaged. The limiting groove is arranged perpendicular to the installation notch. The elastic buckle protrusion is engaged with the limiting groove.

10. The assembly structure according to claim 7, characterized in that: The support base and the positioning section are connected by injection molding.

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