Guide seat, PCBA board assembly, vehicle electrical equipment and vehicle

Abstract

The utility model provides a guide seat, a PCBA board assembly, vehicle electrical equipment and a vehicle, the guide seat is used for cooperative installation of a first component and a second component, the first component is provided with a PIN hole, the second component is provided with a PIN needle, the guide seat is provided with a first wall and a second wall which are arranged oppositely, the guide seat is provided with a guide hole, the guide hole penetrates through the first wall, the guide hole comprises a flaring section, and the first wall is provided with a first hole; the cross section area of the flaring section is gradually enlarged in the direction close to the second wall, and the large end of the flaring section penetrates through the second wall. According to the guiding seat, the size transmission accumulative error between the PIN hole and the PIN needle is absorbed through the flaring section, so that the PIN needle can smoothly enter the guiding hole and smoothly enter the PIN hole under the guiding and driving effects of the flaring section, physical connection and electric connection of the first component and the second component are achieved, and the service life of the first component and the second component is prolonged. The problem of possible interference between the PIN needle and the PIN hole in the assembling process is solved, the passing ability of PIN needle assembling is ensured, the economical efficiency is good, the cost is low, and no reliability risk exists.

Description

Technical Field

[0001] This application relates to the field of product assembly technology, specifically to a guide seat, PCBA board assembly, automotive electrical equipment, and vehicle. Background Technology

[0002] In some automotive electrical devices, core components such as power modules and filter capacitors are physically and electrically connected by selective soldering of pins and pin holes on the PCBA board. Due to the large number of internal production and process steps of core components, the positional tolerance between the pins and the product positioning reference is usually large. The cumulative tolerance of the dimensional transfer links between the pins and pin holes is large, the pin insertion board has low passability, and interference problems may occur between the pins and pin holes during the assembly process.

[0003] Due to the limitations of PIN hole size in the manufacturing process, improving the pin insertion board's throughput by significantly increasing the pin positioning accuracy in core components is not economical and is costly. If the focus is on reducing the size transfer links, PCBA boards have to adopt a split-board design, which requires additional materials for PCBA board interconnection, leading to a significant increase in material costs and introducing reliability risks under shock and vibration conditions. At the same time, the split-board design increases the volume of automotive electrical equipment assemblies, reducing overall power density and market competitiveness. Utility Model Content

[0004] The purpose of this application is to provide a guide seat, PCBA board assembly, automotive electrical equipment and vehicle, to solve the interference problem that may occur between PIN pins and PIN holes during the assembly process, to ensure the passability of PIN pin assembly, and to achieve good economy, low cost and no reliability risk.

[0005] To solve the above-mentioned technical problems, this application provides a guide seat for the mating installation of a first component and a second component. The first component has a PIN hole, and the second component has a PIN pin. The guide seat has a first wall and a second wall arranged opposite to each other. The guide seat is provided with a guide hole that passes through the first wall. The guide hole includes a flared section, the cross-sectional area of ​​which gradually expands along the direction close to the second wall, and the large end of the flared section passes through the second wall.

[0006] During operation, the guide seat of this application is connected to the first component. The first wall of the guide seat fits against the corresponding side wall of the first component. The guide hole of the guide seat and the PIN hole of the first component are correspondingly connected. The large end of the flared section passes through the second wall and faces the second component. During assembly, the flared section of the guide hole can guide the PIN. In practice, the taper and size of the flared section can be set in combination with the limit cumulative tolerance between the PIN hole and the PIN. In this way, the flared section can absorb the cumulative error of the size transfer between the PIN hole and the PIN. Even if the tolerance between the PIN hole and the PIN reaches the limit cumulative tolerance, the PIN can still smoothly enter the flared section of the guide hole. Under the guidance and driving action of the flared section, it smoothly enters the PIN hole. The physical connection and electrical connection between the first component and the second component are realized through the PIN and the PIN hole.

[0007] Therefore, the guide seat of this application can solve the interference problem that may occur between the PIN pin and the PIN hole during the assembly process, and ensure the passability of the PIN pin assembly. It does not require improving the positioning accuracy of the PIN pin in the second component, which is economical. The first component does not need to adopt a separate board design, but is an integrated board structure, which saves the raw materials of the board connection scheme, reduces the raw material cost, and has no reliability risk.

[0008] In some embodiments of this application, the guide hole further includes a straight hole section connected to one end of the flared section near the first wall, and the end of the straight hole section penetrates the first wall.

[0009] In some embodiments of this application, the guide seat is provided with a first positioning pin, which is used to engage with a first positioning hole provided in the first component.

[0010] In some embodiments of this application, the first positioning pin is disposed on the side of the guide seat facing away from the large end of the flared section.

[0011] In some embodiments of this application, the first positioning pin includes a main positioning pin and a secondary positioning pin. The main positioning pin is used to engage with a main positioning hole disposed in the first component, and the secondary positioning pin is used to engage with a secondary positioning hole disposed in the first component.

[0012] In some embodiments of this application, the guide seat has a solder pad on one side of the first wall.

[0013] In some embodiments of this application, the guide seat includes a guide seat body, the guide hole is disposed in the guide seat body, and the guide seat body and the solder pad are connected together by an insert injection molding process.

[0014] This application also provides a PCBA board assembly, including a PCBA board and the aforementioned guide seat. The PCBA board forms a first component, and the guide seat is connected to the PCBA board. The first wall of the guide seat is in contact with the corresponding side wall of the PCBA board, and the guide hole of the guide seat and the PIN hole of the PCBA board are correspondingly connected.

[0015] The PCBA board assembly of this application includes the aforementioned guide seat, and therefore has the same technical effect as the aforementioned guide seat, which will not be repeated here.

[0016] In some embodiments of this application, the guide seat is connected to the PCBA board via SMT technology.

[0017] This application also provides an automotive electrical device, including the aforementioned PCBA board assembly, and further including a core component, the core component forming a second component, the core component and the PCBA board in the PCBA board assembly being physically and electrically connected through pins and pin holes.

[0018] The automotive electrical equipment of this application includes the aforementioned PCBA board assembly, and therefore has the same technical effect as the aforementioned PCBA board assembly, which will not be repeated here.

[0019] In some embodiments of this application, a housing is also included, with the core component being positioned and installed inside the housing. A third positioning pin is provided on one of the PCBA board and the housing, and a third positioning hole is provided on the other. The third positioning pin and the third positioning hole are inserted into each other.

[0020] In the installed state, the length of the third positioning pin inserted into the third positioning hole is the first length, and the length of the PIN pin located on the side of the second wall closer to the PCBA board is the second length, with the second wall of the guide seat as the boundary. The first length is greater than the second length.

[0021] In some embodiments of this application, the vehicle electrical equipment includes a vehicle dual inverter.

[0022] This application also provides a vehicle including the aforementioned vehicle electrical equipment.

[0023] The vehicle in this application includes the aforementioned vehicle electrical equipment, and therefore has the same technical effects as the aforementioned vehicle electrical equipment, which will not be repeated here. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a specific embodiment of the guide seat provided by this utility model;

[0025] Figure 2 for Figure 1Schematic diagram of the guide seat at the second angle;

[0026] Figure 3 This is a schematic diagram of the structure of a specific embodiment of the automotive electrical equipment provided by this utility model during the installation of a PCBA board assembly;

[0027] Figure 4 A schematic diagram of the structure of a specific embodiment of the vehicle electrical equipment provided by this utility model during the installation of core components;

[0028] Figure 5 This is a schematic diagram of the PCBA board and housing in a specific embodiment of the automotive electrical equipment provided by this utility model;

[0029] Figure 6 A schematic diagram showing the mating relationship between the PIN pins and PIN holes in an assembled state, according to a specific embodiment of the automotive electrical equipment provided by this utility model.

[0030] in, Figures 1-6 The labels in the attached figures are as follows:

[0031] 1-Guide seat; 1A-First wall; 1B-Second wall; 11-Guide hole; 111-Flanged section; 112-Straight hole section; 12-Pad; 13-Guide seat body;

[0032] 2-PCBA board; 01-First component; 011-PIN hole;

[0033] 3-Core component; 02-Second component; 021-PIN pin;

[0034] 4-Shell;

[0035] A1 - First locating pin; A11 - Main locating pin; A12 - Secondary locating pin; A2 - Second locating pin; A3 - Third locating pin; A31 - First pin section; A32 - Second pin section;

[0036] a1 - First positioning hole; a2 - Second positioning hole; a3 - Third positioning hole; a31 - First hole portion; a32 - Second hole portion. Detailed Implementation

[0037] To enable those skilled in the art to better understand the technical solutions of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Please refer to Figures 1-3 , Figure 1 This is a schematic diagram of a specific embodiment of the guide seat provided by this utility model; Figure 2 for Figure 1 Schematic diagram of the guide seat at the second angle; Figure 3This is a schematic diagram of the structure of a specific embodiment of the vehicle inverter provided by this utility model when installing the PCBA board assembly.

[0039] This application provides a guide seat 1 for the mating installation of a first component 01 and a second component 02. The first component 01 has a PIN hole 011 and the second component 02 has a PIN pin 021. The guide seat 1 has a first wall 1A and a second wall 1B arranged opposite to each other. The guide seat 1 is provided with a guide hole 11, which passes through the first wall 1A. The guide hole 11 includes a flared section 111, the cross-sectional area of ​​which gradually expands along the direction close to the second wall 1B, and the large end of the flared section 111 passes through the second wall 1B.

[0040] It should be noted that the larger end of the flared section 111 is the end with the larger cross-sectional area.

[0041] Depend on Figure 3 As can be seen, during operation, the guide seat 1 of this application is connected to the side of the first component 01 facing the second component 02. The first wall 1A of the guide seat 1 is in contact with the corresponding side wall of the first component 01. The guide hole 11 of the guide seat 1 and the PIN hole 011 of the first component 01 are correspondingly connected. The large end of the flared section 111 passes through the second wall 1B and faces the second component 02. During assembly, the flared section 111 of the guide hole 11 can guide the PIN pin 021. In practice, the taper and size of the flared section 111 can be combined with the PIN hole 011 and the PIN pin. The limit cumulative tolerance between PIN hole 011 and PIN pin 021 is set so that the flared section 111 can absorb the cumulative error of dimensional transmission between PIN hole 011 and PIN pin 021. Even if the tolerance between PIN hole 011 and PIN pin 021 reaches the limit cumulative tolerance, PIN pin 021 can still smoothly enter the flared section 111 of the guide hole 11. Under the guidance and driving action of the flared section 111, it smoothly enters the PIN hole 011. The physical connection and electrical connection between PCBA board 2 and core component 3 are achieved by selective soldering of PIN pin 021 and PIN hole 011.

[0042] Therefore, the guide seat 1 of this application can solve the interference problem that may occur between the PIN pin 021 and the PIN hole 011 during the assembly process, and ensure the passability of the PIN pin 021 assembly. It does not require improving the positioning accuracy of the PIN pin 021 in the second component 02, which is economical. The first component 01 also does not need to adopt a separate board design, which can be a one-piece plate structure, saving the raw materials of the board connection scheme, reducing the raw material cost, eliminating the reliability risk, reducing the overall volume, increasing the overall success rate density, and improving market competitiveness.

[0043] In practice, the taper of the flared section 111 should not be too small. Appropriate angle parameters should be selected in conjunction with the process trial assembly to ensure that the guide seat 1 is not scratched during the assembly process and to improve the assembly processability.

[0044] Please continue to refer to this. Figure 3 In this embodiment, the guide hole 11 further includes a straight hole section 112, which is connected to one end of the flared section 111 near the first wall 1A. The end of the straight hole section 112 passes through the first wall 1A and is used to align with the PIN hole 011.

[0045] It is understandable that the guide hole 11, including only the flared section 111, can also play the role of guiding the PIN pin 021 as described above. However, in this solution, the guide seat 1 is thinner and the structure is weaker, making it prone to deformation or even breakage. Furthermore, due to the forming requirements of the flared section 111, burrs and flash will exist on the small end edge of the flared section 111, affecting the assembly of the PIN pin 021. Based on this, this embodiment adds a straight hole section 112. The maximum cross-sectional area of ​​the straight hole section 112 should be smaller than the minimum cross-sectional area of ​​the PIN hole 011 to ensure that the PIN pin 021 will not interfere with the end face of the PIN hole 011 in extreme cases. When the guide seat 1 is connected to the first component 01, the straight hole section 112 and the PIN hole 011 are connected. During the assembly process, the PIN pin 021 enters the straight hole section 112 under the guidance of the flared section 111, and then smoothly enters the interior of the PIN hole 011 from the straight hole section 112.

[0046] It should be noted that the smaller end of the flared section 111 is the end with the smaller cross-sectional area.

[0047] In this embodiment, the guide hole 11 has a straight hole section 112 and a flared section 111. On the one hand, the guide hole 11 has a larger axial length, the thickness of the guide seat 1 is increased, the structural strength of the guide seat 1 is improved, and the risk of deformation or even breakage of the guide seat 1 is reduced. At the same time, the structural form of the guide hole 11 determines that it is not easy to generate burrs and flash during molding, thus avoiding the impact on the assembly of the PIN pin 021.

[0048] Please continue to refer to this. Figure 3 In this embodiment, the guide seat 1 is provided with a first positioning part, which is used to insert and cooperate with a second positioning part provided on the first component 01. The first positioning part is a first positioning pin A1, and the second positioning part is specifically a first positioning hole a1.

[0049] Thus, before the guide seat 1 is fixed to the first component 01, the first positioning pin A1 and the first positioning hole a1 are inserted and fitted together to position the guide seat 1, ensuring good positioning accuracy between the guide hole 11 of the guide seat 1 and the PIN hole 011 of the first component 01, and preventing the PIN pin 021 from being blocked and physically interfered with the PIN hole 011 after entering the guide hole 11.

[0050] Specifically, the first positioning pin A1 is connected to the first wall 1A of the guide seat 1. That is, the first positioning pin A1 is set on the side of the guide seat 1 facing away from the large end of the flared section 111. Thus, after the first positioning pin A1 is inserted into the first positioning hole a1 of the first component 01, the first wall 1A of the guide seat 1 and the corresponding side wall of the first component 01 are in contact. The second wall 1B of the guide seat 1 faces the second component 02, that is, the large end of the flared section 111 is set towards the second component 02. Therefore, when the PIN pin 021 is engaged with the PIN hole 011, the PIN pin 021 enters from the large end of the flared section 111. Thus, the flared section 111 can play its role in absorbing the cumulative error of dimensional transmission between the PIN hole 011 and the PIN pin 021.

[0051] Depend on Figure 3 As can be seen, in this embodiment, the guide seat 1 is provided with two first positioning pins A1, which are distributed at intervals along the length of the guide seat 1. The first component 01 is provided with two first positioning holes a1. Of the two first positioning pins A1, one is a main positioning pin A11 and the other is a secondary positioning pin A12. The first positioning hole a1 corresponding to the main positioning pin A11 is the main positioning hole, and the first positioning hole a1 corresponding to the secondary positioning pin A12 is the secondary positioning hole. In practice, the main positioning pin A11 is usually designed as a cylinder, and the main positioning hole is set as a matching circle. The main positioning pin A11 cooperates with the main positioning hole to ensure that the positioning accuracy of the guide seat 1 is the same in all directions in the horizontal plane. The secondary positioning pin A12 is inserted into the secondary positioning hole and plays a role in rotational limiting, thereby realizing the reliable positioning of the first component 01 and the guide seat 1.

[0052] Please continue to refer to this. Figure 1 In this embodiment, the guide seat 1 is provided with a pad 12 on one side of the first wall 1A. The pad 12 can be used to mount the guide seat 1 to the first component 01 using SMT technology.

[0053] SMT stands for Surface Mount Technology, a surface mount technology that directly solders components onto the surface of a PCBA board at designated locations without requiring through-hole mounting. It offers advantages such as high assembly density, high reliability, strong vibration resistance, low solder joint defect rate, good high-frequency characteristics, and ease of automation. With the miniaturization of electronic products, SMT technology represents a significant trend in electronic assembly technology, particularly in its suitability for assembling today's powerful integrated circuit chips with numerous pins.

[0054] In some embodiments of this application, the guide seat 1 can also be installed on the first component 01 in other ways, such as selective welding or through-hole reflow soldering.

[0055] During the surface mount process, a solder paste printing process is required, which involves printing solder paste and flux onto the pads 12 of the guide seat 1, and then using a robot to achieve fully automated material feeding and SMT mounting.

[0056] Among them, such as Figure 1 As shown, the guide seat 1 may include two pads 12, which are located at both ends of the guide seat body 13 along its length to ensure reliable connection between the guide seat 1 and the PCBA board 2. A through hole is provided in the middle of the pad 12 to avoid the PIN pin 021.

[0057] In practice, the position of pad 12 is not limited; for example, pad 12 can avoid the guide hole 11. Thus, pad 12 does not require vias. Similarly, the number of pads 12 is not limited; at least one pad 12 can be used, as long as a reliable connection between the guide seat 1 and the PCBA board 2 is ensured. The size and shape of pad 12 can be adjusted and customized according to requirements.

[0058] In this embodiment, welding blocks or welding plates can also be used to replace the solder pads 12.

[0059] Furthermore, in this embodiment, the guide seat 1 includes a guide seat body 13, a guide hole 11 is disposed in the guide seat body 13, and the guide seat body 13 and the solder pad 12 are connected together by an insert injection molding process.

[0060] Specifically, during molding, the solder pads 12 are pre-installed into the mold, and then molten material is injected into the mold to bond and solidify with the solder pads 12, forming an integrated guide seat 1. This molding process can improve the molding reliability of the guide seat 1 and improve the dimensional accuracy of the guide seat 1.

[0061] In practice, there are no restrictions on the connection method between the guide seat body 13 and the solder pad 12; for example, they can also be bonded together for fixation.

[0062] In practice, the guide seat body 13 is made of insulating materials, including but not limited to plastics.

[0063] This application also provides a PCBA board assembly, including a PCBA board 2 and the aforementioned guide seat 1. The PCBA board 2 forms a first component 01, and the guide seat 1 is connected to the PCBA board 2. The first wall 1A of the guide seat 1 is attached to the corresponding side wall of the PCBA board 2, and the guide hole 11 and the PIN hole 011 of the guide seat 1 are respectively connected.

[0064] The PCBA board assembly of this application includes the aforementioned guide seat 1, and therefore has the same technical effect as the aforementioned guide seat 1, which will not be repeated here.

[0065] Furthermore, as mentioned above, the guide seat 1 is connected to the PCBA board 2 via SMT technology. The technical characteristics of SMT technology have already been described in detail above and will not be repeated here.

[0066] Please refer to Figures 3-5 , Figure 4 A schematic diagram of the structure of a specific embodiment of the vehicle electrical equipment provided by this utility model during the installation of core components; Figure 5 This is a schematic diagram of the PCBA board and housing in a specific embodiment of the automotive electrical equipment provided by this utility model.

[0067] This application also provides an automotive electrical device, including the aforementioned PCBA board assembly, and further including a core component 3, the core component 3 forming a second component 02, the core component 3 and the PCBA board 2 in the PCBA board assembly are physically and electrically connected through PIN pins 021 and PIN holes 011.

[0068] The automotive electrical equipment of this application includes the aforementioned PCBA board assembly, and therefore has the same technical effect as the aforementioned PCBA board assembly, which will not be repeated here.

[0069] In practice, automotive electrical equipment includes dual inverters. Dual inverters generally have two main functions: the inverter function converts the high-voltage DC power input from the battery into three-phase AC power to drive the motor, and the rectification function converts the three-phase AC power generated by the range extender-driven generator into high-voltage DC power to supply the battery for charging or directly supply the drive motor. Its PCBA board assembly integrates the drive power module circuit and the generator power module circuit. Its core components include the drive power module, the generator power module, and filter capacitors, etc.

[0070] Please continue to refer to this. Figure 4 In this embodiment, the vehicle electrical equipment also includes a housing 4, the core component 3 is provided with a second positioning pin A2, and the housing 4 is provided with a second positioning hole a2. The second positioning pin A2 and the second positioning hole a2 are inserted and fitted together to realize the limiting installation of the core component 3 inside the housing 4.

[0071] In practice, it is also feasible to set the core component 3 with the second positioning hole a2 and the housing 4 with the second positioning pin A2.

[0072] Please continue to refer to this. Figure 5 In this embodiment, the PCBA board 2 is provided with a third positioning hole a3, and the housing 4 is provided with a third positioning pin A3. The third positioning pin A3 and the third positioning hole a3 are inserted and fitted together to realize the limited installation of the PCBA board assembly inside the housing 4.

[0073] Among them, by Figure 5It can be seen that the PCBA board 2 has two third positioning holes a3, defined as the first hole a31 and the second hole a32. The housing 4 has two third positioning pins A3, defined as the first pin A31 and the second pin A32. The first pin A31 and the first hole a31 are inserted and cooperate to realize the main positioning of the PCBA board assembly. The second pin A32 and the second hole a32 are inserted and cooperate to realize the secondary positioning of the PCBA board assembly.

[0074] In this system, "primary positioning" restricts the movement of the PCBA board assembly within its plane, while "secondary positioning" restricts its rotation. This primary and secondary positioning scheme, working in tandem, ensures the reliability of PCBA board assembly positioning while reducing the difficulty of PCBA board assembly installation and manufacturing.

[0075] Furthermore, in the installation process of automotive electrical equipment in this embodiment, the core component 3 is usually positioned and installed inside the housing 4 first, and then the PCBA board assembly is positioned and installed. During the installation of the PCBA board assembly, the PIN pin 021 is inserted into the corresponding PIN hole 011.

[0076] It can be seen that there is no direct positioning relationship between the core component 3 and the PCBA board assembly. In order to ensure the smooth installation of the PIN pin 021 and the PIN hole 011 and to prevent the PIN pin 021 from colliding with the solid part of the guide seat 1, the position of the PCBA board assembly needs to be positioned by the third positioning pin A3 and the third positioning hole a3 before the PIN pin 021 contacts the guide hole 11 of the guide seat 1. In this way, the relative positional relationship between the core component 3 and the housing 4 is determined, the relative positional relationship between the PCBA board assembly and the housing 4 is determined, and the relative positional relationship between the core component 3 and the PCBA board assembly is then determined, ensuring the smooth installation of the PIN pin 021 and the PIN hole 011.

[0077] In short, during the installation of the PCBA board assembly, when the third positioning pin A3 begins to enter the third positioning hole a3, there should still be a gap between the guide seat 1 and the PIN pin 021 of the core component 3. In this way, as the PCBA board assembly continues to move and assemble, the PIN pin 021 of the core component 3 can smoothly enter the guide hole 11 of the guide seat 1 and gradually slide into the PIN hole 011 of the PCBA board assembly along the inner side wall of the guide hole 11 of the guide seat 1. After the PCBA board assembly is assembled in place, the PIN pin 021 and the PIN hole 011 complete the insertion and engagement.

[0078] After assembly, i.e. in the installed state, the length of the third positioning pin A3 inserted into the third positioning hole a3 is defined as the first length. Taking the second wall 1B of the guide seat 1 as the boundary, the length of the PIN pin 021 located on the side of the second wall 1B closer to the PCBA board 2 is defined as the second length. Figure 6 As shown, the second length is L. Since the third positioning pin A3 enters the third positioning hole a3 first, and the PIN pin 021 enters the guide hole 11 later, the first length must be greater than the second length. Conversely, since the first length is greater than the second length, during the installation of the PCBA board assembly, the third positioning pin A3 must enter the third positioning hole a3 first, and the PIN pin 021 must enter the guide hole 11 of the guide seat 1 later.

[0079] This application provides a vehicle including the aforementioned vehicle electrical equipment.

[0080] The vehicle in this application includes the aforementioned vehicle electrical equipment, and therefore has the same technical effects as the aforementioned vehicle electrical equipment, which will not be repeated here.

[0081] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A guide seat for mating installation of a first component (01) and a second component (02), the first component (01) having a PIN hole (011), the second component (02) having a PIN needle (021), characterized in that, The guide seat (1) has a first wall (1A) and a second wall (1B) arranged oppositely, and is provided with a guide hole (11) penetrating through the first wall (1A), wherein the guide hole (11) comprises a flared section (111) with a cross-sectional area gradually expanding in a direction close to the second wall (1B), and a large end of the flared section (111) penetrates through the second wall (1B).

2. The guide bushing of claim 1, wherein, The guide hole (11) further comprises a straight hole section (112) connected to one end of the flared section (111) close to the first wall (1A), and an end of the straight hole section (112) penetrates through the first wall (1A).

3. The guide bushing of claim 1, wherein, The guide seat (1) is provided with a first positioning pin (A1) for plug-in cooperation with a first positioning hole (a1) arranged on the first component (01).

4. The guide bushing of claim 3, wherein, The first positioning pin (A1) is arranged on a side of the guide seat (1) away from the large end of the flared section (111).

5. The guide bushing of claim 3, wherein, The first positioning pin (A1) comprises a main positioning pin (A11) for plug-in cooperation with a main positioning hole arranged on the first component (01), and a secondary positioning pin (A12) for plug-in cooperation with a secondary positioning hole arranged on the first component (01).

6. A guide bushing according to any one of claims 1-5, characterized in that The guide seat (1) is provided with a solder pad (12) on one side of the first wall (1A).

7. The guide bushing of claim 6, wherein, The guide seat (1) comprises a guide seat body (13), and the guide hole (11) is arranged on the guide seat body (13), and the guide seat body (13) and the solder pad (12) are connected in one piece by insert molding process.

8. A PCBA board assembly characterized by, The PCBA board (2) forms a first component (01), the guide seat (1) is connected to the PCBA board (2), the first wall (1A) of the guide seat (1) and a corresponding side wall of the PCBA board (2) are attached, and the guide hole (11) of the guide seat (1) and a PIN hole (011) of the PCBA board (2) correspondingly penetrate.

9. The PCBA board assembly of claim 8, wherein, The guide seat (1) is connected to the PCBA board (2) by SMT technology.

10. An electric device for a vehicle, characterized by comprising: The PCBA board assembly according to any one of claims 8-9 further comprises a core component (3), wherein the core component (3) forms a second component (02), and the core component (3) and the PCBA board (2) in the PCBA board assembly are physically and electrically connected through a PIN pin (021) and a PIN hole (011).

11. The electric device for vehicle according to claim 10, wherein The core component (3) is limitingly installed in the shell (4), one of the PCBA board (2) and the shell (4) is provided with a third positioning pin (A3), and the other is provided with a third positioning hole (a3), and the third positioning pin (A3) and the third positioning hole (a3) are plug-in cooperated. In the mounted state, the third positioning pin (A3) is inserted into the third positioning hole (a3) by a first length, and the PIN (021) is located on the second wall (1B) of the seat (1) by a second length close to the PCBA board (2), the first length is greater than the second length.

12. The electrical device for a vehicle according to any one of claims 10 to 11, characterized by, The vehicle electrical equipment includes a vehicle dual-inverter.

13. A vehicle characterized by comprising: The vehicle electrical equipment includes the vehicle dual-inverter. The vehicle electrical equipment includes the vehicle dual-inverter.

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