A small-pitch vertical SMD panel connector for automobile controller

Abstract

The present application relates to the technical field of connector, and discloses a small-pitch vertical SMD panel connector for automobile controller, which comprises a shell, a terminal assembly arranged in the shell and an auxiliary part, a containing cavity is formed in the shell, the terminal assembly comprises a plurality of terminal pieces, each of the terminal pieces comprises a mounting portion, a welding portion connected with the mounting portion and a contact portion, the mounting portion is arranged on the shell, the contact portion is arranged in the containing cavity and used for guiding and connecting an external plug connector, and the welding portion protrudes from the shell and is connected with an external board end, the welding portion comprises a first bending portion connected with the mounting portion, a second bending portion and a third bending portion, one end of the first bending portion away from the mounting portion is connected with the second bending portion, and one end of the second bending portion away from the first bending portion is connected with the third bending portion, and under the premise of ensuring the contact reliability and mechanical strength, the pin pitch is effectively reduced, and the overall size of the connector is optimized.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and in particular discloses a small-pitch vertical SMD surface mount connector for automotive controllers. Background Technology

[0002] As the functions of vehicle controllers become increasingly concentrated, the space on their PCB boards is becoming increasingly scarce, creating an urgent need for miniaturization and high density of interconnect devices on the board. Currently, SMD surface mount connectors on the market generally have the problem of large area occupation and insufficient compact layout. This is mainly because traditional connector designs, while maintaining mechanical strength and electrical performance, are difficult to achieve significant reduction in pin pitch and ultimate optimization of overall shape. In particular, there is a lack of small-pitch, high-reliability vertical SMD surface mount connector solutions specifically designed for the compact space of automotive controllers, which cannot meet the requirements of vehicle controllers for miniaturization, high density, and high reliability of interconnect devices. Summary of the Invention

[0003] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this invention is to provide a small-pitch vertical SMD board connector for automotive controllers.

[0004] To achieve the above objectives, the present invention provides a small-pitch vertical SMD surface mount connector for automotive controllers, comprising a housing and a terminal assembly disposed within the housing; the housing has an accommodating cavity, the terminal assembly includes multiple terminal pieces, each terminal piece including a mounting portion, a soldering portion connected to the mounting portion, and a contact portion, the mounting portion being located between the contact portion and the soldering portion, the mounting portion being disposed on the housing, the contact portion being accommodated within the accommodating cavity for conducting external plug-in connectors, and the soldering portion protruding from the housing and connecting to an external board end; The welding part includes a first bend, a second bend, and a third bend connected to the mounting part. The end of the first bend away from the mounting part is connected to the second bend, and the end of the second bend away from the first bend is connected to the third bend. Along the length direction of the welding part, the second bend is located between the first bend and the third bend; along the thickness direction of the welding part, the second bend is located between the first bend and the third bend; the third bend is used for welding to the end of the outer plate.

[0005] The first bend, the second bend, and the third bend together form a Z-shape.

[0006] By arranging the mounting portion of the terminal piece between the contact portion and the welding portion, the overall structural layout is compact and reasonable. The welding portion adopts a Z-shaped structure consisting of a first bend, a second bend, and a third bend connected in sequence. Along the length direction, the second bend is located between the first and third bends, and along the thickness direction, the second bend is also located between the first and third bends. This stepped Z-shaped bending structure can provide clearance space for the housing during vertical mounting, ensuring that the third bend fits flatly against the outer board end for stable SMD welding. It can also improve the structural strength and deformation resistance of the welding portion itself, effectively buffer vibration and thermal stress, and reduce the risk of welding failure. At the same time, the regular bending shape facilitates the integral stamping and forming of the terminal, adapts to the requirements of small-pitch dense arrangement, and ensures the assembly convenience and electrical connection reliability of the connector in automotive controller application scenarios.

[0007] The mounting part and the welding part are arranged in an L-shaped bend. The welding part forms a forming angle with the mounting part through the first bend, and the forming angle is 90-120°.

[0008] The mounting portion of the terminal is housed within the receiving cavity of the housing. The soldering portion forms a shaped angle with the mounting portion through its first bend, achieving an L-shaped bend arrangement between the mounting portion and the soldering portion. This allows the soldering portion to extend and protrude from the receiving cavity, stably connecting to the external board end and adapting to the vertical mounting requirements of the connector. Its beneficial effects are that the L-shaped bend arrangement can effectively shorten the horizontal space occupied by the terminal while ensuring the overall structural strength and installation stability of the terminal, further optimizing the overall dimensions of the connector and adapting to scenarios with limited space on the PCB board of the vehicle controller. At the same time, it facilitates precise docking between the soldering portion and the external board end, improving the reliability of the board connection. It takes into account both miniaturization requirements and electrical connection performance, solving the problem of insufficient compactness in the layout of traditional connectors.

[0009] The welding part is located at the bottom of the housing, and the bottom of the housing is provided with multiple abutting parts. The multiple abutting parts are equidistantly arranged at the bottom of the housing, and one abutting part abuts against the welding part of one terminal piece.

[0010] The contact member includes a first main body, on the side of the first main body near the terminal member, a first inclined guide surface and a first plane connected to the first inclined guide surface, and a first included angle is formed between the first inclined guide surface and the first plane; when the panel connector is connected to the external board end, the first inclined guide surface abuts against the second bent portion, and the first plane abuts against the third bent portion.

[0011] The welding section is located at the bottom of the housing, and multiple abutment members are arranged at equal intervals at the bottom of the housing, with each abutment member corresponding to a terminal piece. The first main body of the abutment member has a connected first inclined guide surface and a first plane on the side near the terminal piece, forming a first included angle between them. When the board connector is connected to the external board, the first inclined guide surface abuts against the second bent part of the terminal piece, and the first plane abuts against the third bent part of the terminal piece. The beneficial effect is that the equally spaced abutment members can provide precise corresponding support for each terminal piece, avoiding the terminal piece from shifting under force. The first inclined guide surface and the first plane are precisely fitted with the second and third bent parts of the welding section, respectively, which can not only guide the connector when it is connected to the external board, facilitating quick and accurate assembly, but also effectively disperse the force on the welding section, preventing the welding section from deforming due to the weak bending structure, thereby improving the stability and reliability of the terminal piece contact. At the same time, the design of the welding section being located at the bottom of the housing further optimizes the overall layout of the connector and adapts to the miniaturization requirements of the vehicle controller PCB board with limited on-board space.

[0012] The surface mount connector also includes an auxiliary component that works with the housing. One end of the auxiliary component is housed in the housing cavity, and the other end of the auxiliary component protrudes out of the housing to facilitate picking up and handling by an external robotic arm.

[0013] The terminal assembly is provided in two sets, which are symmetrically arranged. The auxiliary component includes a second main body, a first partition, a spacer, and a second partition on the second main body. The spacer is located between the first partition and the second partition. A first receiving portion is provided between the first partition and the spacer, and a second receiving portion is provided between the spacer and the second partition. When the auxiliary component is installed on the housing, the first set of terminal assemblies is located in the first receiving portion, and the second set of terminal assemblies is located in the second receiving portion.

[0014] The second main body protrudes from the shell to facilitate picking up and taking by an external robotic arm. The first partition, the spacer, and the second partition are housed in the receiving cavity. The second main body has a flat surface that facilitates the external robotic arm's suction.

[0015] The terminal assemblies are arranged in two symmetrical groups. The second main body of the auxiliary component is provided with a first partition, a spacer, and a second partition in sequence. The spacer is located between the first partition and the second partition, thus forming a first receiving portion between the first partition and the spacer, and a second receiving portion between the spacer and the second partition. When the auxiliary component is assembled onto the housing, the first group of terminal assemblies is placed in the first receiving portion, and the second group of terminal assemblies is placed in the second receiving portion. The beneficial effect is that the two symmetrically arranged terminal assemblies can increase the interconnection density of the connector, adapting to the high-density interconnection requirements of the vehicle controller. The two receiving portions formed by the first partition, the spacer, and the second partition can accurately separate and limit the two groups of terminal assemblies, effectively avoiding interference between the two groups of terminal assemblies and preventing electrical faults such as short circuits. At the same time, it can provide stable support for the terminal assemblies, improving the structural stability of the terminal assemblies after assembly. With the symmetrical layout design, the internal space utilization of the connector is further optimized, taking into account both high density and miniaturization requirements, adapting to the use scenario where the PCB board of the vehicle controller has limited space, and improving the overall reliability and assembly convenience of the connector.

[0016] The bottom of the housing is also provided with a blocking rib arranged along the length of the housing. The blocking rib is located between the welding parts of the two sets of terminal assemblies. The blocking rib is used to prevent the solder from going over the boundary when the third bend is welded to the outer plate end.

[0017] A blocking rib extending along its length is provided at the bottom of the housing and is arranged between the welding parts of the two sets of terminal assemblies. In specific implementation, the blocking rib can form a physical isolation structure during the surface mount welding process between the third bend and the outer board end, effectively blocking the flow of molten solder and avoiding short circuits between adjacent solder feet due to solder propagation and bridging. At the same time, it can ensure the stability of the welding spacing, improve the welding safety and electrical reliability of small-pitch densely arranged terminals, and is especially suitable for the high integration and high stability requirements of automotive controllers.

[0018] The first partition has a plug-in part on the side away from the partition, and a snap-fit ​​part on the side of the plug-in part near the housing. The housing has a plug-in groove on the inner side and a snap-fit ​​hole on the housing that communicates with the plug-in groove. When the auxiliary component is plugged into the housing, the plug-in part is plugged into the plug-in groove and the snap-fit ​​part is snap-fitted into the snap-fit ​​hole to realize the connection between the auxiliary component and the housing.

[0019] A plug-in portion is provided on the side of the first partition away from the spacer portion, and a snap-fit ​​portion is provided on the side of the plug-in portion closer to the housing. A corresponding plug-in groove is opened on the inner side of the housing, and a snap-fit ​​hole communicating with the plug-in groove is opened on the housing. When the auxiliary component is assembled with the housing, the plug-in portion of the auxiliary component is aligned with the plug-in groove on the inner side of the housing and inserted, so that the plug-in portion and the plug-in groove form a plug-in engagement. At the same time, the snap-fit ​​portion on the plug-in portion and the snap-fit ​​hole on the housing form a snap-fit ​​engagement, thereby realizing a stable connection between the auxiliary component and the housing. Its beneficial effect is that the connection method combining plug-in engagement and snap-fit ​​engagement not only ensures the accurate positioning of the auxiliary component and the housing during assembly, which facilitates quick assembly and improves assembly efficiency, but also ensures the structural stability of the two after connection, preventing the auxiliary component from loosening or falling off during use, thereby ensuring the separation and limiting effect of the auxiliary component on the terminal assembly. At the same time, the structure design is simple and compact, requiring no additional fasteners, effectively saving internal space of the connector, adapting to the needs of miniaturization and compact layout of vehicle controllers, and further improving the overall reliability and assembly convenience of the connector.

[0020] The snap-fit ​​part includes a fourth main body part, the outer side of which is an arc surface, and the arc surface is positioned facing the snap-fit ​​hole.

[0021] When the auxiliary component is assembled with the housing and the plug-in part is inserted into the plug-in slot, the arc surface of the snap-fit ​​part contacts the inner wall of the snap-fit ​​hole and undergoes elastic deformation, ultimately achieving a snap-fit ​​engagement between the snap-fit ​​part and the snap-fit ​​hole, completing a stable connection between the auxiliary component and the housing. When it is necessary to remove the auxiliary component, the arc surface can reduce the separation resistance between the snap-fit ​​part and the inner wall of the snap-fit ​​hole, allowing the snap-fit ​​part to smoothly disengage from the snap-fit ​​hole, enabling the auxiliary component to be smoothly removed. Its beneficial effects are that the arc surface design can play a guiding role in the snap-fit ​​engagement process, reducing the contact resistance between the snap-fit ​​part and the snap-fit ​​hole, avoiding jamming during assembly, facilitating the quick and smooth snap-fit ​​assembly of the auxiliary component with the housing, while ensuring the smoothness of the auxiliary component removal, improving the ease of disassembly and assembly, and the arc surface can disperse the contact stress during snap-fit, preventing damage to the snap-fit ​​part or snap-fit ​​hole due to excessive local force, extending the service life of the component. The arc surface structure is simple and compact, does not occupy extra space, and is suitable for the miniaturization requirements of vehicle controllers, further improving the reliability, ease of disassembly and assembly, and structural durability of the connection between the auxiliary component and the housing.

[0022] An clearance groove is provided between the insertion part and the first partition part. When the auxiliary part is inserted into the housing, the clearance groove provides elastic deformation space for the insertion part.

[0023] An clearance slot is provided between the plug-in part and the first partition part. When the auxiliary component is assembled with the housing and the plug-in part is inserted into the plug-in slot inside the housing, the clearance slot provides sufficient elastic deformation space for the plug-in part, allowing it to undergo appropriate elastic deformation according to the assembly force, and smoothly complete the plug-in engagement with the plug-in slot. At the same time, it ensures the precise snap-fit ​​connection between the snap-fit ​​part and the snap-fit ​​hole. Its beneficial effects are that the elastic deformation space provided by the clearance slot can effectively prevent the plug-in part from breaking or being damaged due to excessive assembly force, improve the structural toughness and durability of the plug-in part, facilitate the smooth insertion of the plug-in part into the plug-in slot, reduce assembly resistance, avoid assembly jamming, improve the assembly convenience of the auxiliary component and the housing, and the clearance slot structure is compact and does not occupy additional internal space of the connector, adapting to the miniaturization and compact layout requirements of the vehicle controller, further ensuring the stability of the connection between the auxiliary component and the housing, indirectly improving the limiting protection effect of the terminal assembly, and enhancing the overall reliability of the connector.

[0024] The bottom of the first partition is provided with a second inclined guide surface, and the bottom of the plug-in part is provided with a third inclined guide surface. The second inclined guide surface and the third inclined guide surface are arranged in the same direction and are used to guide the auxiliary parts and the housing during assembly.

[0025] A second inclined guide surface is provided at the bottom of the first partition, and a third inclined guide surface is provided at the bottom of the insertion part. The second and third inclined guide surfaces are arranged in the same direction. When the auxiliary component is assembled with the housing, the second and third inclined guide surfaces simultaneously contact the corresponding positions of the housing, which guides the insertion assembly of the auxiliary component and guides the insertion part to accurately align with the insertion slot on the inner side of the housing, so as to smoothly complete the insertion and snap-fit. Its beneficial effect is that the two inclined guide surfaces arranged in the same direction form a synergistic guiding effect, which can effectively improve the alignment accuracy when the auxiliary component is assembled with the housing, avoid the deviation and jamming during assembly, greatly reduce the assembly difficulty and improve the assembly efficiency. At the same time, it can reduce the friction loss between the first partition, the insertion part and the housing during the assembly process, prevent the components from being damaged due to assembly friction, extend the service life of the connector, and the inclined guide surface structure is simple and compact, requiring no additional components and not occupying extra space. It is suitable for the miniaturization and compact layout requirements of the vehicle controller, further improving the convenience and reliability of the assembly of the auxiliary component and the housing, and indirectly ensuring the limit stability of the terminal assembly.

[0026] The second main body is also provided with a clamping part, which is arranged parallel to the first partition part. When the auxiliary part is inserted into the housing, the clamping part abuts against the outer side of the housing.

[0027] A clamping part is added to the second main body of the auxiliary component, and the clamping part is arranged parallel to the first partition part. After the auxiliary component is inserted into the housing and the snap-fit ​​is completed, the clamping part is tightly abutted against the outer side of the housing, forming a lateral clamping limit on the housing. Its beneficial effect is that the clamping part parallel to the first partition part can form a stable abutment with the outer side of the housing, further improving the stability of the connection between the auxiliary component and the housing, preventing the auxiliary component from shifting left or right or loosening during use. At the same time, it can provide a certain support for the housing, enhance the structural strength of the housing, and prevent the housing from deforming due to force. This ensures the installation stability and electrical connection reliability of the terminal components inside the housing. Moreover, the clamping part has a compact structure design and is arranged parallel to the first partition part, which can make reasonable use of space without occupying extra volume. It is suitable for the miniaturization and compact layout requirements of the vehicle controller, and at the same time improves the overall structural regularity of the auxiliary component after assembly, indirectly optimizing the assembly convenience and durability of the connector.

[0028] The clamping part is provided with a fourth inclined guide surface on the side near the housing.

[0029] A fourth inclined guide surface is provided on the side of the clamping part near the housing. When the auxiliary part is assembled with the housing, the fourth inclined guide surface first contacts the outer side of the housing, guiding the clamping part to smoothly fit the outer side of the housing until the auxiliary part completes the insertion and snap-locking with the housing, and finally the clamping part and the outer side of the housing are tightly abutted.

[0030] The inner side of the shell is provided with multiple sets of reinforcing ribs.

[0031] The reinforcing ribs are integrally molded with the shell, covering key stress areas inside the shell and forming a stable connection with the inner wall of the shell and the edge of the accommodating cavity. The beneficial effect is that multiple sets of reinforcing ribs can effectively enhance the overall structural strength and deformation resistance of the shell, preventing the shell from deforming or cracking due to stress or vibration during assembly and use. This ensures the installation stability of the terminal components inside the shell and avoids terminal contact misalignment affecting electrical connection performance. At the same time, the reinforcing ribs have a compact structure, do not occupy the effective space of the accommodating cavity, and do not affect the assembly of the terminal components. This adapts to the compact layout requirements of the vehicle controller, improves the overall durability and reliability of the connector, and adapts to the complex vibration conditions of the vehicle environment.

[0032] The outer side of the shell is provided with multiple sets of material-removing grooves, which are arranged at intervals along the length of the shell.

[0033] Multiple sets of material removal grooves are evenly spaced along the length of the outer side of the housing. These grooves do not penetrate the inner wall of the housing and do not affect the structural integrity of the internal accommodating chamber. The advantages are that the material removal grooves can effectively reduce the overall weight of the connector without reducing the structural strength of the housing, achieving a lightweight design. At the same time, it can reduce the use of housing raw materials, reduce production costs, and the structure of the grooves arranged along the length direction can make the weight of the housing evenly distributed, avoiding local weight concentration. In addition, the material removal grooves can also increase the heat dissipation area on the outer side of the housing, assisting in heat dissipation and adapting to the high-temperature operating environment of the vehicle controller, while not affecting the compact layout of the housing, meeting the requirements of miniaturization design.

[0034] The outer side of the housing is also provided with a first mounting block, a second mounting block symmetrically arranged with the first mounting block, and a fixing member. Both the first mounting block and the second mounting block are provided with snap-fit ​​grooves. The fixing member includes a third main body and a fourth main body arranged perpendicular to the third main body. The third main body is provided with a first extension arm and a second extension arm on both sides. The fixing member is accommodated in the snap-fit ​​groove of the first mounting block through the first extension arm and in the snap-fit ​​groove of the second mounting block to realize the snap-fit ​​fixing of the fixing member and the housing. The fourth main body is used to weld and fix to the end of the outer plate.

[0035] The symmetrically arranged mounting blocks and fasteners engage to achieve rapid and precise assembly of the fasteners and housing, improving assembly efficiency. The engagement is also secure, preventing the fasteners from loosening. Meanwhile, the welding and fixing of the fourth main body to the external board further enhances the reliability of the connection between the connector and the external board, improves the connector's vibration resistance, and adapts to the complex vibration environment of the vehicle. The symmetrical layout ensures uniform force distribution, avoids localized force shifting of the connector, and guarantees stable contact between the terminal components and the external board. It balances ease of assembly and connection stability, meeting the installation requirements of vehicle controllers.

[0036] The first included angle between the first inclined guide surface and the first plane is 30°-60°. This included angle is set to adapt to the bending angle of the second bending part, so that the first inclined guide surface and the second bending part are fully in contact, thereby improving the support and limiting effect and preventing the second bending part from being deformed by force.

[0037] The included angle precisely matches the bending angle of the second bend of the terminal welding part. When the panel connector is connected to the external board, the first inclined guide surface fully fits the second bend, and the first plane tightly abuts the third bend. The beneficial effect is that the included angle setting of 30°-60° can precisely match the bending angle of the second bend, ensuring that the first inclined guide surface and the second bend fully fit, effectively dispersing the force on the welding part, avoiding deformation of the second bend due to force concentration, significantly improving the support and limiting effect of the contact part on the terminal, and ensuring the stability and reliability of the terminal contact. At the same time, this included angle range can take into account both guidance and support, which not only facilitates the precise docking of the connector and the external board, but also adapts to the vibration and impact conditions of the vehicle environment, further improving the electrical connection performance and structural durability of the connector, and adapting to the design requirements of small-pitch terminal parts.

[0038] The beneficial effects of this invention are as follows: By optimizing the design of the connector housing, terminal assembly, auxiliary parts, and various supporting structures, with multi-bend terminals, symmetrical layout, precise positioning, and convenient assembly structure as the core, it adapts to the space constraints of automotive controller PCB boards. Its beneficial effects lie in the fact that, while ensuring the mechanical strength, electrical connection reliability, and structural stability of the connector, it effectively reduces pin spacing and optimizes the overall dimensions, achieving miniaturization and high-density layout. This solves the problems of large area occupation and loose layout of traditional SMD surface mount connectors. Simultaneously, through the synergistic effect of multiple guiding structures, snap-fit ​​engagement, limiting support, and reinforcing structures, it improves the ease of assembly and disassembly, avoids component interference, stress deformation, and loosening and detachment, enhances the connector's vibration and deformation resistance, adapts to complex automotive operating conditions, and balances lightweight, low cost, and high durability, fully meeting the automotive controller's requirements for miniaturized, high-density, and high-reliability interconnect devices. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the entire invention; Figure 3 This is a schematic diagram of the structure of the auxiliary component of the present invention; Figure 4 This is a schematic diagram of the structure of the housing of the present invention; Figure 5 This is a schematic diagram of the structure of the fastener of the present invention; Figure 6 This is a schematic diagram of the terminal component of the present invention; Figure 7 This is a structural schematic diagram of the housing of the present invention from another perspective; Figure 8 For the present invention Figure 7 A magnified structural diagram of part A in the middle.

[0040] The reference numerals in the figures include: 1. Housing; 2. Terminal assembly; 3. Auxiliary component; 4. Receiving chamber; 5. Mounting part; 6. Welding part; 7. First bending part; 8. Second bending part; 9. Third bending part; 11. Abutting component; 12. First main body part; 13. First inclined guide surface; 14. First plane; 15. First included angle; 16. Second main body part; 17. First partition part; 18. Spacing part; 19. Second partition part; 21. First receiving part; 22. Second receiving part; 23. Insertion part; 24. Snap-fit ​​part; 25. 26. Snap-fit ​​hole; 27. Fourth main body part; 28. Arc surface; 29. ​​Clearance groove; 30. Second inclined guide surface; 31. Third inclined guide surface; 32. Clamping part; 33. Fourth inclined guide surface; 34. Reinforcing rib; 35. Material removal groove; 36. First mounting block; 37. Second mounting block; 38. Fixing member; 39. Snap-fit ​​groove; 41. Third main body part; 42. Fifth main body part; 43. First extension arm; 44. Second extension arm; 45. Insertion groove; 100. Blocking rib; 200. Contact part. Detailed Implementation

[0041] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0042] Please see Figures 1 to 8 As shown, a small-pitch vertical SMD surface mount connector for an automotive controller according to the present invention includes a housing 1 and a terminal assembly 2 disposed within the housing 1; the housing 1 has an accommodating chamber 4, the terminal assembly 2 includes a plurality of terminal pieces, each terminal piece including a mounting part 5, a soldering part 6 connected to the mounting part 5 and a contact part 200, the mounting part 5 being located between the contact part 200 and the soldering part 6, the mounting part 5 being disposed on the housing 1, the contact part 200 being accommodated within the accommodating chamber 4 for conducting external plug-in connectors, and the soldering part 6 protruding from the housing 1 and connecting to an external board end; The welding part 6 includes a first bend 7, a second bend 8, and a third bend 9 connected to the mounting part 5. The end of the first bend 7 away from the mounting part 5 is connected to the second bend 8, and the end of the second bend 8 away from the first bend 7 is connected to the third bend 9. Along the length direction of the welding part 6, the second bend 8 is located between the first bend 7 and the third bend 9; along the thickness direction of the welding part 6, the second bend 8 is located between the first bend 7 and the third bend 9; the third bend 9 is used for welding to the end of the outer plate.

[0043] The first bend 7, the second bend 8, and the third bend 9 together form a Z-shape.

[0044] By arranging the mounting portion 5 of the terminal piece between the contact portion 200 and the welding portion 6, the overall structural layout is compact and reasonable. The welding portion 6 adopts a Z-shaped structure consisting of a first bend portion 7, a second bend portion 8, and a third bend portion 9 connected in sequence. Along the length direction, the second bend portion 8 is located between the first and third bend portions 9, and along the thickness direction, the second bend portion 8 is also located between the first and third bend portions 9. This stepped Z-shaped bending structure can provide clearance space for the housing 1 during vertical mounting, ensuring that the third bend portion 9 fits flat against the outer board end to achieve stable SMD welding. It can also improve the structural strength and deformation resistance of the welding portion 6 itself, effectively buffer vibration and thermal stress, and reduce the risk of welding failure. At the same time, the regular bending shape facilitates the integral stamping and forming of the terminal, adapts to the requirements of small-pitch dense arrangement, and ensures the assembly convenience and electrical connection reliability of the connector in the automotive controller application scenario.

[0045] The mounting part 5 and the welding part 6 are arranged in an L-shape. The welding part 6 forms a forming angle with the mounting part 5 through the first bending part 7. The forming angle is 90-120°.

[0046] The mounting portion 5 of the terminal piece is housed within the accommodating chamber 4 of the housing 1. The welding portion 6 forms a shaped angle with the mounting portion 5 through its own first bending portion 7, achieving an L-shaped bending arrangement of the mounting portion 5 and the welding portion 6. This allows the welding portion 6 to extend and protrude from the accommodating chamber 4, stably connecting to the external board end and adapting to the vertical mounting requirements of the connector. Its beneficial effect is that the L-shaped bending arrangement can effectively shorten the horizontal space occupied by the terminal piece while ensuring the overall structural strength and installation stability of the terminal piece, further optimizing the overall external dimensions of the connector, adapting to the scenario of limited space on the PCB board of the vehicle controller, and facilitating the precise connection between the welding portion 6 and the external board end, improving the reliability of the board connection, taking into account both miniaturization requirements and electrical connection performance, and solving the problem of insufficient compactness in the layout of traditional connectors.

[0047] The welding part 6 is located at the bottom of the housing 1. The bottom of the housing 1 is provided with a plurality of abutting members 11. The plurality of abutting members 11 are equidistantly arranged at the bottom of the housing 1. One abutting member 11 abuts against the welding part 6 of a terminal member.

[0048] The contact member 11 includes a first main body 12. The first main body 12 is provided with a first inclined guide surface 13 and a first plane 14 connected to the first inclined guide surface 13 on the side near the terminal member. A first included angle 15 is formed between the first inclined guide surface 13 and the first plane 14. When the panel connector is connected to the external board end, the first inclined guide surface 13 abuts against the second bending portion 8, and the first plane 14 abuts against the third bending portion 9.

[0049] A welding part 6 is disposed at the bottom of the housing 1. Multiple abutment members 11 are arranged at equal intervals at the bottom of the housing 1, with each abutment member 11 corresponding to a terminal member. The first main body 12 of the abutment member 11 has a connected first inclined guide surface 13 and a first plane 14 on the side near the terminal member, forming a first included angle 15. When the panel connector is connected to the outer board end, the first inclined guide surface 13 abuts against the second bent portion 8 of the terminal member, and the first plane 14 abuts against the third bent portion 9 of the terminal member. Its advantage lies in that the equidistantly arranged abutment members 11 can provide abutment to each terminal member. The precise alignment and support prevent the terminal components from shifting under stress. The first inclined guide surface 13 and the first plane 14 are precisely fitted with the second and third bending portions 9 of the welding portion 6, respectively. This not only guides the connector when it is connected to the external board, facilitating quick and accurate assembly, but also effectively disperses the stress on the welding portion 6, preventing deformation due to the weak bending structure of the welding portion 6. This improves the stability and reliability of the terminal contact. In addition, the design of the welding portion 6 located at the bottom of the housing 1 further optimizes the overall layout of the connector and adapts to the miniaturization requirements of the vehicle controller PCB board with limited space.

[0050] The surface mount connector also includes an auxiliary component 3 that works in conjunction with the housing 1. One end of the auxiliary component 3 is housed in the housing chamber 4, and the other end of the auxiliary component 3 protrudes out of the housing 1 to facilitate picking up and taking by an external robotic arm.

[0051] The terminal assembly 2 is provided in two sets, and the two sets of terminal assemblies 2 are symmetrically arranged. The auxiliary component 3 includes a second main body 16, a first partition 17, a spacer 18 and a second partition 19 disposed on the second main body 16. The spacer 18 is located between the first partition 17 and the second partition 19. A first receiving portion 21 is provided between the first partition 17 and the spacer 18, and a second receiving portion 22 is provided between the spacer 18 and the second partition 19. When the auxiliary component 3 is installed on the housing 1, the first set of terminal assemblies 2 is located in the first receiving portion 21, and the second set of terminal assemblies 2 is located in the second receiving portion 22.

[0052] The second main body 16 protrudes from the housing 1 to facilitate picking up and taking by an external robotic arm. The first partition 17, the spacer 18, and the second partition 19 are housed in the accommodating chamber 4. The second main body 16 is provided with a flat surface, which facilitates the external robotic arm to pick up and take it.

[0053] The terminal assemblies 2 are configured in two sets and arranged symmetrically. The second main body 16 of the auxiliary component 3 is sequentially provided with a first partition 17, a spacer 18, and a second partition 19. The spacer 18 is located between the first partition 17 and the second partition 19, thereby forming a first receiving portion 21 between the first partition 17 and the spacer 18, and a second receiving portion 22 between the spacer 18 and the second partition 19. When the auxiliary component 3 is assembled onto the housing 1, the first set of terminal assemblies 2 is placed correspondingly within the first receiving portion 21, and the second set of terminal assemblies 2 is placed correspondingly within the second receiving portion 22. The beneficial effect is that the two symmetrically arranged terminal assemblies 2 can improve the connector's performance. The interconnect density is adapted to the high-density interconnection requirements of vehicle controllers. The auxiliary component 3, through the two receiving parts formed by the first partition 17, the interval 18 and the second partition 19, can accurately separate and limit the two sets of terminal assemblies 2, effectively avoiding interference between the two sets of terminal assemblies 2 and preventing electrical faults such as short circuits. At the same time, it can provide stable support for the terminal assemblies 2, improve the structural stability of the terminal assemblies 2 after assembly, and further optimize the internal space utilization of the connector with the symmetrical layout design, taking into account the requirements of high density and miniaturization, adapting to the use scenarios where the PCB board of the vehicle controller has limited space, and improving the overall reliability and assembly convenience of the connector.

[0054] The bottom of the housing 1 is also provided with a blocking rib 100 arranged along the length of the housing 1. The blocking rib 100 is located between the welding parts 6 of the two sets of terminal assemblies 2. The blocking rib 100 is used to prevent the solder from going over the boundary when the third bending part 9 is welded to the outer plate end.

[0055] A blocking rib 100 extending along its length is provided at the bottom of the housing 1, and the blocking rib 100 is arranged between the welding parts 6 of the two sets of terminal assemblies 2. In specific implementation, the blocking rib 100 can form a physical isolation structure during the surface mount welding process between the third bend 9 and the outer plate end, effectively blocking the flow of molten solder, avoiding short circuits between adjacent solder feet due to solder propagation and bridging, and ensuring stable welding spacing, improving the welding safety and electrical reliability of small-pitch densely arranged terminals, especially suitable for the high integration and high stability requirements of automotive controllers.

[0056] The first partition portion 17 has a plug-in portion 23 on the side away from the partition portion 18, and a snap-fit ​​portion 24 on the side of the plug-in portion 23 close to the housing 1. The housing 1 has a plug-in groove 45 on its inner side and a snap-fit ​​hole 25 on the housing 1 that communicates with the plug-in groove 45. When the auxiliary component 3 is plugged into the housing 1, the plug-in portion 23 is plugged into the plug-in groove 45, and the snap-fit ​​portion 24 is snap-fitted into the snap-fit ​​hole 25 to realize the connection between the auxiliary component 3 and the housing 1.

[0057] A plug-in portion 23 is provided on the side of the first partition portion 17 away from the spacer portion 18, and a snap-fit ​​portion 24 is provided on the side of the plug-in portion 23 near the housing 1. A plug-in groove 45 is provided on the inner side of the housing 1, and a snap-fit ​​hole 25 communicating with the plug-in groove 45 is provided on the housing 1. When the auxiliary component 3 is assembled with the housing 1, the plug-in portion 23 of the auxiliary component 3 is aligned with the plug-in groove 45 on the inner side of the housing 1 and inserted, so that the plug-in portion 23 and the plug-in groove 45 form a plug-in engagement. At the same time, the snap-fit ​​portion 24 on the plug-in portion 23 and the snap-fit ​​hole 25 on the housing 1 form a snap-fit ​​engagement, thereby realizing a stable connection between the auxiliary component 3 and the housing 1. The beneficial effects of this connection method are that the combination of plug-in and snap-fit ​​engagement ensures accurate positioning of the auxiliary component 3 and the housing 1 during assembly, facilitating rapid assembly and improving assembly efficiency. It also ensures the structural stability of the connection, preventing the auxiliary component 3 from loosening or falling off during use. This, in turn, ensures the separation and limiting effect of the auxiliary component 3 on the terminal assembly 2. At the same time, the structure is simple and compact, requiring no additional fasteners 38, effectively saving internal space in the connector. It meets the needs of miniaturization and compact layout of vehicle controllers, further improving the overall reliability and ease of assembly of the connector.

[0058] The snap-fit ​​portion 24 includes a fourth main body portion 26, the outer side of which is an arc surface 27, and the arc surface 27 is disposed facing the snap-fit ​​hole 25.

[0059] When the auxiliary component 3 is assembled with the housing 1 and the insertion part 23 is inserted into the insertion slot 45, the arc surface 27 of the locking part 24 contacts the inner wall of the locking hole 25 and undergoes elastic deformation, ultimately achieving a snap-fit ​​engagement between the locking part 24 and the locking hole 25, completing a stable connection between the auxiliary component 3 and the housing 1. When it is necessary to remove the auxiliary component 3, the arc surface 27 can reduce the separation resistance between the locking part 24 and the inner wall of the locking hole 25, allowing the locking part 24 to smoothly disengage from the locking hole 25, thus enabling the auxiliary component 3 to be smoothly removed. Its beneficial effect is that the design of the arc surface 27 can play a guiding role in the snap-fit ​​process, reducing the snap-fit ​​resistance. The contact resistance between part 24 and snap-fit ​​hole 25 avoids jamming during assembly, facilitating quick and smooth snap-fit ​​assembly of auxiliary part 3 with housing 1. It also ensures smooth removal of auxiliary part 3, improving ease of disassembly and assembly. Furthermore, the arc surface 27 can disperse contact stress during snap-fit, preventing damage to snap-fit ​​part 24 or snap-fit ​​hole 25 due to excessive local stress, thus extending the service life of the component. The arc surface 27 has a simple and compact structure, does not occupy extra space, and meets the miniaturization requirements of vehicle controllers, further improving the reliability, ease of disassembly and assembly, and structural durability of the connection between auxiliary part 3 and housing 1.

[0060] An avoidance groove 28 is provided between the insertion part 23 and the first partition part 17. When the auxiliary part 3 is inserted into the housing 1, the avoidance groove 28 provides elastic deformation space for the insertion part 23.

[0061] A clearance groove 28 is provided between the insertion part 23 and the first partition part 17. When the auxiliary part 3 is assembled with the housing 1 and the insertion part 23 is inserted into the insertion groove 45 inside the housing 1, the clearance groove 28 can provide sufficient elastic deformation space for the insertion part 23, allowing the insertion part 23 to undergo appropriate elastic deformation according to the assembly force, and smoothly complete the insertion and engagement with the insertion groove 45. At the same time, it ensures the precise snap-fit ​​engagement of the snap-fit ​​part 24 and the snap-fit ​​hole 25. Its beneficial effect is that the elastic deformation space provided by the clearance groove 28 can effectively prevent the insertion part 23 from being inserted into the housing 1. To prevent breakage or damage due to excessive assembly stress, the structure of the plug part 23 is improved in terms of structural toughness and durability. At the same time, it facilitates the smooth insertion of the plug part 23 into the plug slot 45, reduces assembly resistance, avoids assembly jamming, improves the ease of assembly between the auxiliary component 3 and the housing 1, and avoids the through slot 28. The structure design is compact and does not occupy additional internal space of the connector, which is suitable for the miniaturization and compact layout requirements of the vehicle controller. It further ensures the stability of the connection between the auxiliary component 3 and the housing 1, indirectly improves the limiting protection effect of the terminal assembly 2, and enhances the overall reliability of the connector.

[0062] The bottom of the first partition 17 is provided with a second inclined guide surface 29, and the bottom of the plug-in part 23 is provided with a third inclined guide surface 31. The second inclined guide surface 29 and the third inclined guide surface 31 are arranged in the same direction and are used to guide the auxiliary part 3 when it is assembled with the housing 1.

[0063] A second inclined guide surface 29 is provided at the bottom of the first partition portion 17, and a third inclined guide surface 31 is provided at the bottom of the insertion portion 23. The second inclined guide surface 29 and the third inclined guide surface 31 are arranged in the same direction. When the auxiliary component 3 is assembled with the housing 1, the second inclined guide surface 29 and the third inclined guide surface 31 simultaneously contact the corresponding positions of the housing 1, providing guidance for the insertion assembly of the auxiliary component 3. This guides the insertion portion 23 to accurately align with the insertion groove 45 on the inner side of the housing 1, smoothly completing the insertion and snap-fit ​​engagement. Its beneficial effect is that the two inclined guide surfaces arranged in the same direction form a synergistic guiding effect, which can... It effectively improves the alignment accuracy of the auxiliary component 3 and the housing 1 during assembly, avoids misalignment and jamming during assembly, significantly reduces assembly difficulty and improves assembly efficiency. At the same time, it can reduce frictional loss between the first partition 17, the plug-in part 23 and the housing 1 during assembly, prevent damage to components due to assembly friction, extend the service life of the connector, and the inclined guide surface structure is simple and compact, requiring no additional components and not occupying extra space. It is suitable for the miniaturization and compact layout requirements of vehicle controllers, further improving the convenience and reliability of the assembly of the auxiliary component 3 and the housing 1, and indirectly ensuring the positioning stability of the terminal assembly 2.

[0064] The second main body 16 is also provided with a clamping part 32, which is arranged parallel to the first partition part 17. When the auxiliary part 3 is inserted into the housing 1, the clamping part 32 abuts against the outer side of the housing 1.

[0065] A clamping part 32 is added to the second main body 16 of the auxiliary component 3, and the clamping part 32 is arranged parallel to the first partition 17. When the auxiliary component 3 is inserted into the housing 1 and the snap-fit ​​is completed, the clamping part 32 is tightly abutted against the outer side of the housing 1, forming a lateral clamping limit on the housing 1. Its beneficial effect is that the clamping part 32, which is parallel to the first partition 17, can form a stable abutment with the outer side of the housing 1, further improving the stability of the connection between the auxiliary component 3 and the housing 1, preventing the auxiliary component 3 from shifting left or right or loosening during use. At the same time, it can provide a certain support for the housing 1, enhance the structural strength of the housing 1, and prevent the housing 1 from deforming due to force. This ensures the installation stability and electrical connection reliability of the terminal assembly 2 inside the housing 1. Moreover, the clamping part 32 has a compact structure design and is arranged parallel to the first partition 17, which can make reasonable use of space without occupying extra volume. It is suitable for the miniaturization and compact layout requirements of the vehicle controller, and at the same time improves the overall structural regularity of the auxiliary component 3 after assembly, indirectly optimizing the assembly convenience and durability of the connector.

[0066] The clamping part 32 is provided with a fourth inclined guide surface 33 on the side near the housing 1.

[0067] A fourth inclined guide surface 33 is provided on the side of the clamping part 32 near the housing 1. When the auxiliary part 3 is assembled with the housing 1, the fourth inclined guide surface 33 first contacts the outer side of the housing 1, guiding the clamping part 32 to smoothly fit the outer side of the housing 1 until the auxiliary part 3 completes the insertion and snap-fit ​​fixation with the housing 1, and finally the clamping part 32 is tightly abutted against the outer side of the housing 1.

[0068] The inner side of the shell 1 is provided with multiple sets of reinforcing ribs 34.

[0069] The reinforcing rib 34 is integrally formed with the housing 1, covering the key stress area inside the housing 1, and forming a stable connection with the inner wall of the housing 1 and the edge of the accommodating chamber 4. Its beneficial effect is that multiple sets of reinforcing ribs 34 can effectively enhance the overall structural strength and deformation resistance of the housing 1, prevent the housing 1 from deforming or cracking due to stress or vibration during assembly and use, thereby ensuring the installation stability of the terminal assembly 2 inside the housing 1, avoiding the impact of terminal contact misalignment on electrical connection performance. At the same time, the reinforcing rib 34 has a compact structure, does not occupy the effective space of the accommodating chamber 4, does not affect the assembly of the terminal assembly 2, adapts to the compact layout requirements of the vehicle controller, improves the overall durability and reliability of the connector, and adapts to the complex vibration conditions of the vehicle environment.

[0070] The outer side of the housing 1 is provided with multiple sets of material-removing grooves 35, which are arranged at intervals along the length of the housing 1.

[0071] Multiple sets of material removal grooves 35 are evenly spaced along the length of the outer side of the housing 1. The material removal grooves 35 do not penetrate the inner wall of the housing 1 and do not affect the structural integrity of the internal accommodating chamber 4 of the housing 1. The beneficial effect is that the material removal grooves 35 can effectively reduce the overall weight of the connector without reducing the structural strength of the housing 1, thus achieving a lightweight design. At the same time, it can reduce the use of raw materials for the housing 1, reduce production costs, and the structure of the material removal grooves arranged along the length direction can make the weight distribution of the housing 1 uniform and avoid local weight concentration. In addition, the material removal grooves 35 can also increase the heat dissipation area on the outer side of the housing 1, assist the heat dissipation of the housing 1, adapt to the high-temperature working environment of the vehicle controller, and at the same time, it does not affect the compact layout of the housing 1, which meets the requirements of miniaturization design.

[0072] The outer side of the housing 1 is also provided with a first mounting block 36, a second mounting block 37 symmetrically arranged with the first mounting block 36, and a fixing member 38. Both the first mounting block 36 and the second mounting block 37 are provided with snap-fit ​​grooves 39. The fixing member 38 includes a third main body part 41 and a fourth main body part 26 arranged perpendicularly to the third main body part 41. The third main body part 41 is provided with a first extension arm 43 and a second extension arm 44 on both sides. The fixing member 38 is accommodated in the snap-fit ​​groove 39 of the first mounting block 36 through the first extension arm 43, and the second extension arm 44 is accommodated in the snap-fit ​​groove 39 of the second mounting block 37, so as to realize the snap-fit ​​fixing of the fixing member 38 and the housing 1. The fourth main body part 26 is used for welding and fixing to the end of the outer plate.

[0073] The symmetrically arranged mounting blocks and the snap-fit ​​fasteners 38 enable quick and precise assembly of the fasteners 38 and the housing 1, improving assembly efficiency. The snap-fit ​​fastening is also secure, preventing the fasteners 38 from loosening. Meanwhile, the welding and fixing of the fourth main body 26 to the external board further enhances the connection reliability between the connector and the external board, improves the connector's vibration resistance, and adapts to the complex vibration environment of the vehicle. The symmetrical layout ensures uniform force distribution, avoids local force shifting of the connector, and ensures stable contact between the terminal and the external board. It balances assembly convenience and connection stability, and meets the installation requirements of the vehicle controller.

[0074] The first included angle 15 between the first inclined guide surface 13 and the first plane 14 is 30°-60°. This included angle is set to adapt to the bending angle of the second bent part 8, so that the first inclined guide surface 13 and the second bent part 8 are fully in contact, thereby improving the support and limiting effect and preventing the second bent part 8 from being deformed by force.

[0075] The included angle is precisely matched with the bending angle of the second bend 8 of the terminal welding part 6. When the panel connector is connected to the external board end, the first inclined guide surface 13 is fully in contact with the second bend 8, and the first plane 14 is tightly abutted against the third bend 9. Its beneficial effect is that the included angle setting of 30°-60° can accurately match the bending angle of the second bend 8, ensuring that the first inclined guide surface 13 and the second bend 8 are fully in contact, effectively dispersing the force on the welding part 6, avoiding deformation of the second bend 8 due to force concentration, significantly improving the support and limiting effect of the contact member 11 on the terminal, ensuring the stability and reliability of the terminal contact, and at the same time, this included angle range can take into account both guidance and support, which is not only convenient for the precise docking of the connector and the external board end, but also can adapt to the vibration and impact conditions of the vehicle environment, further improving the electrical connection performance and structural durability of the connector, and adapting to the design requirements of small-pitch terminal parts.

[0076] The above description is only a preferred embodiment of the present invention. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. A small-pitch vertical SMD surface mount connector for automotive controllers, characterized in that: Includes a housing (1) and a terminal assembly (2) disposed within the housing (1); the housing (1) has an accommodating chamber (4), the terminal assembly (2) includes multiple terminal pieces, the terminal pieces include a mounting part (5), a welding part (6) connected to the mounting part (5) and a contact part (200), the mounting part (5) is disposed on the housing (1), the contact part (200) is accommodated in the accommodating chamber (4) for conducting external plug-in connectors, and the welding part (6) protrudes from the housing (1) and connects to the end of an external plate; The welding part (6) includes a first bend (7), a second bend (8) and a third bend (9) connected to the mounting part (5). The end of the first bend (7) away from the mounting part (5) is connected to the second bend (8), and the end of the second bend (8) away from the first bend (7) is connected to the third bend (9). Along the length direction of the welding part (6), the second bend (8) is located between the first bend (7) and the third bend (9). Along the thickness direction of the welding part (6), the second bend (8) is located between the first bend (7) and the third bend (9). The third bend (9) is used for welding to the end of the outer plate.

2. The small-pitch vertical SMD surface mount connector for automotive controllers according to claim 1, characterized in that: The mounting part (5) and the welding part (6) are arranged in an L-shape. The welding part (6) forms a forming angle with the mounting part (5) through the first bending part (7). The forming angle is 90-120°.

3. The small-pitch vertical SMD surface mount connector for automotive controllers according to claim 1, characterized in that: The welding part (6) is located at the bottom of the housing (1). Multiple abutments (11) are provided at the bottom of the housing (1). The multiple abutments (11) are equidistantly arranged at the bottom of the housing (1). One abutment (11) abuts against the welding part (6) of a terminal piece.

4. A small-pitch vertical SMD surface mount connector for automotive controllers according to claim 3, characterized in that: The contact member (11) includes a first main body (12), the first main body (12) has a first inclined guide surface (13) and a first plane (14) connected to the first inclined guide surface (13) on the side near the terminal member, and a first included angle (15) is formed between the first inclined guide surface (13) and the first plane (14); when the patch connector is connected to the external board end, the first inclined guide surface (13) abuts against the second bent portion (8), and the first plane (14) abuts against the third bent portion (9).

5. A small-pitch vertical SMD surface mount connector for automotive controllers according to claim 1, characterized in that: The surface mount connector also includes an auxiliary component (3) that works in conjunction with the housing (1). One end of the auxiliary component (3) is housed in the accommodating chamber (4), and the other end of the auxiliary component (3) protrudes out of the housing (1) to facilitate picking up and taking by an external robotic arm.

6. A small-pitch vertical SMD surface mount connector for automotive controllers according to claim 5, characterized in that: The terminal assembly (2) is provided in two sets, and the two sets of terminal assemblies (2) are symmetrically arranged. The auxiliary component (3) includes a second main body (16), a first partition (17), a spacer (18) and a second partition (19) provided on the second main body (16). The spacer (18) is located between the first partition (17) and the second partition (19). A first receiving portion (21) is provided between the first partition (17) and the spacer (18), and a second receiving portion (22) is provided between the spacer (18) and the second partition (19). When the auxiliary component (3) is installed on the housing (1), the first set of terminal assemblies (2) is located in the first receiving portion (21), and the second set of terminal assemblies (2) is located in the second receiving portion (22).

7. A small-pitch vertical SMD surface mount connector for automotive controllers according to claim 6, characterized in that: The bottom of the housing (1) is also provided with a blocking rib (100) arranged along the length direction of the housing (1). The blocking rib (100) is located between the welding parts (6) of the two sets of terminal assemblies (2). The blocking rib (100) is used to prevent the solder from crossing the boundary when the third bending part (9) is welded to the outer plate end.

8. A small-pitch vertical SMD surface mount connector for automotive controllers according to claim 6, characterized in that: The first partition (17) has a plug-in part (23) on the side away from the partition part (18), and a snap-fit ​​part (24) on the side of the plug-in part (23) close to the housing (1). The housing (1) has a plug-in groove (45) on the inner side, and a snap-fit ​​hole (25) connected to the plug-in groove (45) on the housing (1). When the auxiliary part (3) is plugged into the housing (1), the plug-in part (23) is plugged into the plug-in groove (45), and the snap-fit ​​part (24) is snapped into the snap-fit ​​hole (25) to realize the connection between the auxiliary part (3) and the housing (1).

9. A small-pitch vertical SMD surface mount connector for automotive controllers according to claim 8, characterized in that: An avoidance groove (28) is provided between the plug-in part (23) and the first partition part (17). When the auxiliary part (3) is plugged into the housing (1), the avoidance groove (28) provides elastic deformation space for the plug-in part (23).

10. A small-pitch vertical SMD surface mount connector for automotive controllers according to claim 8, characterized in that: The bottom of the first partition (17) is provided with a second inclined guide surface (29), and the bottom of the plug-in part (23) is provided with a third inclined guide surface (31). The second inclined guide surface (29) and the third inclined guide surface (31) are arranged in the same direction and are used to guide the auxiliary part (3) and the housing (1) during assembly.

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