Open-close type welding-free power module PIN structure
By designing an openable solderless power module PIN structure, the problems of poor soldering contact and high Press-Fit cost were solved, achieving rapid installation, tight contact, and efficient conduction, thus reducing equipment cost and accuracy requirements.
Patent Information
- Application Number
- CN202422848455.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-11-21
AI Technical Summary
Existing power module pins suffer from poor contact during soldering, and Press-Fit technology has strict requirements on materials and dimensions, resulting in high costs, high precision requirements for crimping equipment, and frequent maintenance.
It adopts an openable solderless power module PIN structure, including a left and right pin arm, designed as a semi-cylindrical platform with an energy release buffer. It is made of copper and gold-plated, and automatically clamps tightly to neutralize dimensional tolerances and installation errors.
It avoids poor contact problems during the welding process, reduces installation difficulty and cost, improves work efficiency, has good conduction performance, and reduces reliance on high-precision equipment.
Smart Images
Figure CN223680120U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to power semiconductor technical field especially relates to a kind of open-close type welding-free power module PIN structure. BACKGROUND
[0002] The most popular power module PIN on market can be divided into Press-Fit PIN and Solder PIN, wherein, Solder PIN needs to be welded when being installed on PCB, and problems such as virtual welding, cavity, tin residue and the like can occur during welding, which can cause poor contact and increase the detection difficulty of workers, and it is time-consuming and laborious, and the Press-Fit technology used when using Press-Fit PIN is a kind of alternative solution to welding installation, which realizes the close connection with PCB through special pin design, such as fisheye type, square type and the like, and the PIN does not need to be welded during the installation of PCB, although it is convenient and fast, but this technology also has some shortcomings and limitations: 1. strict requirements on materials and sizes, if the materials are not properly selected or the sizes are not strictly controlled, it can cause loose connection or damage to the pin or metallized hole; 2. high precision requirements for crimping equipment and process, which needs to accurately control parameters such as pressure value, crimping time and pressure depth to ensure the tightness and stability of the connection; 3. high use cost, the Press-Fit process needs to be regularly maintained and maintained to ensure that it is in good working condition, and the high-precision crimping equipment and die cost higher, which increases the initial investment cost. SUMMARY
[0003] Based on the above problems, the utility model provides a kind of open-close type welding-free power module PIN structure, to solve the technical problems, such as poor contact caused by welding and high cost, in the prior art.
[0004] A kind of open-close type welding-free power module PIN structure, including left needle arm, right needle arm and needle base;
[0005] The first end of the left needle arm and the first end of the right needle arm are connected to the needle base.
[0006] The PIN structure is in the original state without external force, and the left needle arm and the right needle arm are in an open state.
[0007] Further, the left needle arm is connected by a needle tip part, a main body part and an energy release buffer part, one end of the energy release buffer part of the left needle arm is connected to the main body part of the left needle arm, and the other end is connected to the needle base as the first end of the left needle arm.
[0008] Further, the right needle arm is connected by a needle tip part, a main body part and an energy releasing buffer part, one end of the energy releasing buffer part of the right needle arm is connected with the main body part of the right needle arm, and the other end is connected with the needle base as the first end of the right needle arm.
[0009] Further, the needle tip part of the left needle arm and the needle tip part of the right needle arm are both semicylindrical table types.
[0010] When the left needle arm and the right needle arm are in the closed state, the needle tip part of the left needle arm and the needle tip part of the right needle arm form a cylindrical table type.
[0011] Further, the main body part of the left needle arm and the main body part of the right needle arm are both semicylindrical types.
[0012] When the left needle arm and the right needle arm are in the closed state, the main body part of the left needle arm and the main body part of the right needle arm form a complete cylindrical type.
[0013] Further, the energy releasing buffer part of the left needle arm and the energy releasing buffer part of the right needle arm are both C types.
[0014] Further, the energy releasing buffer part of the left needle arm and the energy releasing buffer part of the right needle arm are both V types.
[0015] Further, the energy releasing buffer part of the left needle arm and the energy releasing buffer part of the right needle arm are both [ types.
[0016] Further, the angle between the left needle arm and the right needle arm of the PIN needle structure is 2 degrees in the original state without external force.
[0017] Further, the material of the PIN needle structure is red copper and the surface is plated with gold.
[0018] The beneficial technical effects of the utility model are as follows: the PIN needle of the utility model does not need to be welded to the PCB, time and labor are saved, and the PIN needle is convenient and fast, and after installation, the PIN needle is automatically clamped, the contact is close, the transmission performance is good, the installation difficulty and cost are reduced, the energy releasing buffer part has a certain elastic deformation capacity, and the size tolerance and installation error can be neutralized to a certain extent. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is a structure schematic view of the utility model in the open state.
[0020] Figure 2 It is a structure schematic view of the utility model in the closed state.
[0021] Among them,
[0022] 1 - left needle arm; 11 - needle tip part of the left needle arm; 12 - main body part of the left needle arm; 13 - energy release buffer part of the left needle arm;
[0023] 2 - right needle arm; 21 - needle tip part of the right needle arm; 22 - main body part of the right needle arm; 23 - energy release buffer part of the right needle arm;
[0024] 3 - needle base. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0026] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.
[0027] The present application will be further described below with reference to the drawings and specific embodiments, but is not limited to the present application.
[0028] Referring to Figure 1 and Figure 2 , the present application provides an open-close type welding-free power module PIN needle structure, comprising a left needle arm (1), a right needle arm (2) and a needle base (3);
[0029] The needle base (3) connects the first end of the left needle arm (1) and the first end of the right needle arm (2).
[0030] The PIN needle structure is in an original state without external force, and the left needle arm (1) and the right needle arm (2) are in an open state.
[0031] The PIN needle of the present application does not need to be welded to the PCB, which saves time and labor, is convenient and fast, and after installation is completed, it is automatically clamped and tightly contacted, has good conduction transmission performance, reduces installation difficulty and cost, and the energy release buffer part has a certain elastic deformation capacity, which can neutralize the size tolerance and installation error to a certain extent.
[0032] Further, the left needle arm (1) is connected and composed of a needle tip part (11), a main body part (12) and an energy release buffer part (13), one end of the energy release buffer part (13) of the left needle arm (1) is connected to the main body part (12) of the left needle arm (1), and the other end is connected to the needle base (3) as the first end of the left needle arm (1).
[0033] Further, the right needle arm (2) is connected by a needle tip part (21), a main body part (22) and an energy release buffer part (23), one end of the energy release buffer part (23) of the right needle arm (2) is connected to the main body part (22) of the right needle arm (2), and the other end is connected to the needle base (3) as the first end of the right needle arm (2).
[0034] The needle tip part is a long conical chamfer part, which plays a guiding role and facilitates smooth guidance into the PCB hole position during use of the PIN needle.
[0035] Further, the needle tip part (11) of the left needle arm (1) and the needle tip part (12) of the right needle arm (2) are both semi-cylindrical table types.
[0036] When the left needle arm (1) and the right needle arm (2) are in a closed state, the needle tip part (12) of the left needle arm (1) and the needle tip part (22) of the right needle arm (2) form a cylindrical table type.
[0037] Further, the main body part of the left needle arm (1) and the main body part of the right needle arm are both semi-cylindrical.
[0038] When the left needle arm (1) and the right needle arm (2) are in a closed state, the main body part (12) of the left needle arm (1) and the main body part (22) of the right needle arm (2) form a complete cylindrical type.
[0039] The main body part connects the semi-cylindrical table type needle tip part and the energy release buffer part, and when used, the semi-cylindrical main body part of the left needle arm (1) and the right needle arm combines to form a complete cylinder, which is used for conducting current or signals.
[0040] Further, the energy release buffer part (13) of the left needle arm (1) and the energy release buffer part (23) of the right needle arm (2) are both C-shaped.
[0041] Further, the energy release buffer part (13) of the left needle arm (1) and the energy release buffer part (23) of the right needle arm (2) are both V-shaped.
[0042] Further, the energy release buffer part (13) of the left needle arm (1) and the energy release buffer part (23) of the right needle arm (2) are both [shaped.
[0043] The energy release buffer part can effectively release the stress generated during press-fitting, prevent the needle body from bending or being damaged due to excessive stress, and at the same time, the elastic deformation of the energy release buffer part can neutralize the hole error and assembly size error, thereby improving the installation accuracy.
[0044] Further, the PIN needle structure is in an original state without external force, and the included angle between the left needle arm (1) and the right needle arm (2) is 2 degrees.
[0045] The PIN needle structure is in an open state when not inserted into the PCB, the included angle between the left and right needle arms is 2°, the needle tip part is guided into the hole first when inserted, the included angle between the left and right needle arms gradually decreases, the PCB opening should be slightly larger than the diameter of the cylindrical main part formed after the PIN needle is closed, and the left and right needle arms still have a tendency to open outward after installation, tightly fit with the PCB hole wall, and are extruded with each other to achieve good contact effect.
[0046] Further, the material of the PIN needle structure is red copper and the surface is plated with gold.
[0047] Since the PIN needle needs to have good conductivity and wear resistance, the material selected by the utility model is red copper, the surface is plated with gold, and the gold layer has good conductivity, chemical stability and corrosion resistance.
[0048] In summary, the effects of the utility model are as follows:
[0049] In the existing technical solution, the Solder PIN needs to be welded, which is not only time-consuming and laborious, but also difficult to quickly troubleshoot when contact problems caused by welding are encountered, the utility model adopts an open-close design, avoids welding, does not need special-shaped pins, is convenient to operate, efficiently straight-inserts, and improves work efficiency.
[0050] After installation, the left and right needle arms still have a tendency to open outward, tightly fit with the PCB hole wall, and are extruded with each other to achieve good contact effect, and improve the conduction transmission performance.
[0051] The existing Press-Fit process has high precision requirements for the pressing equipment and process, and this process needs to accurately control parameters such as pressure value, pressing time and pressing depth, the utility model does not need to accurately control the above parameters, and when the pressing depth has deviation, the left and right needle arms can present different opening angles to keep close contact with the PCB.
[0052] The simple use mode can improve work efficiency, reduce time cost, and at the same time, reduce the use and maintenance of high-precision equipment, and reduce the purchase and use cost of the equipment.
[0053] The energy-releasing buffer part has a certain elastic deformation capacity and can neutralize the size tolerance and installation error to a certain extent.
[0054] The above is only the preferred embodiment of the utility model, and does not limit the implementation and protection scope of the utility model, and those skilled in the art should realize that any equivalent replacement and obvious change obtained by applying the contents of the utility model specification and drawings should be included in the protection scope of the utility model.
Claims
1. An open-close solderless power module pin structure, characterized in that, The left needle arm, the right needle arm and the needle base; The needle base connects the first end of the left needle arm and the first end of the right needle arm; The left needle arm and the right needle arm are in an open state when the PIN needle structure is in an original state without external force.
2. The open-close solderless power module PIN structure of claim 1, wherein, The left needle arm is composed of a needle tip part, a main body part and an energy release buffer part, one end of the energy release buffer part of the left needle arm is connected to the main body part of the left needle arm, and the other end is connected to the needle base as the first end of the left needle arm.
3. The open-close solderless power module PIN structure of claim 2, wherein, The right needle arm is composed of a needle tip part, a main body part and an energy release buffer part, one end of the energy release buffer part of the right needle arm is connected to the main body part of the right needle arm, and the other end is connected to the needle base as the first end of the right needle arm.
4. The open-close solderless power module PIN structure of claim 3, wherein, The needle tip part of the left needle arm and the needle tip part of the right needle arm are both half-cylinder table type; The needle tip part of the left needle arm and the needle tip part of the right needle arm form a cylinder table type when the left needle arm and the right needle arm are in a closed state.
5. The open-close solderless power module PIN structure of claim 3, wherein, The main body part of the left needle arm and the main body part of the right needle arm are both half-cylinder type; The main body part of the left needle arm and the main body part of the right needle arm form a complete cylinder type when the left needle arm and the right needle arm are in a closed state.
6. The openable and closable solderless power module pin structure of claim 3, wherein, The energy release buffer part of the left needle arm and the energy release buffer part of the right needle arm are both C type.
7. The openable and closable solderless power module pin structure of claim 3, wherein, The energy release buffer part of the left needle arm and the energy release buffer part of the right needle arm are both V type.
8. The openable and closable solderless power module pin structure of claim 3, wherein, The energy release buffer part of the left needle arm and the energy release buffer part of the right needle arm are both [type.
9. The openable and closable solderless power module pin structure of claim 3, wherein, The angle between the left needle arm and the right needle arm is 2 degrees when the PIN needle structure is in an original state without external force.
10. The openable and closable solderless power module pin structure of claim 3, wherein, The material of the PIN needle structure is red copper and the surface is plated with gold.