Crimping type automobile connector

Abstract

The invention relates to the technical field of electric connectors, in particular to a crimping type automobile connector. The connector is provided with a shell, one side of the shell is provided with a frame opening, and the other side of the shell is provided with a pin positioning plate. The frame opening comprises a basic frame opening and a high-configuration frame opening, the basic frame opening is used for being connected with wire harnesses of all automobile types, the high-configuration frame opening is used for being connected with wire harnesses of part of the automobile types, when the high-configuration frame opening is not connected with the wire harnesses of the automobile, fixing pins are arranged on the outermost row of positions of the high-configuration frame opening, and parts of the fixing pins are inserted into the pin positioning plate; the connector is connected with a circuit board; mounting pins used for mounting pin positioning plates are arranged at the two ends of the shell, each mounting pin comprises a fixing seat and an elastic column, the elastic columns are located on the two sides of the fixing seat and can be elastically folded towards the direction of the fixing seat, and the mounting pins at the two ends of the shell are arranged in a 90-degree rotation mode. According to the invention, the stability of the connector in a vibration environment is improved, the size is reduced, and the manufacturing yield and the assembly precision are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical connectors, and in particular to a crimp-type automotive connector. Background Art

[0002] Crimp-type automotive connectors are primarily used in automotive electronic controllers, providing both electrical connection and mechanical fastening between the electronic controller and the wiring harness. These connectors typically consist of a housing and multiple conductive pins, which are used to electrically connect the electronic controller and the wiring harness. Depending on the vehicle's configuration, the connector can be designed with multiple cavities. In high-end models, all cavities are used for wiring harness connectors; in lower-end models, some cavities remain empty.

[0003] In existing technology, no pins are typically placed in the vacant cavity, resulting in a lack of mechanical fixation between the connector and the circuit board in this area, leaving the connector suspended. The vibration and impact of vehicle operation can easily cause micro-displacement between the connector and the circuit board. Long-term use can lead to degraded electrical connection performance, such as increased contact resistance and unstable signal transmission.

[0004] Furthermore, as connector pins become increasingly miniaturized, pin positioning plates are often required to maintain pin position accuracy. Existing connectors with pin positioning plates typically utilize independent guiding, positioning, and fixing structures, which increases the connector's size and space requirements, making it difficult to fit within compact automotive electronic controllers. Furthermore, these discrete structural features can easily lead to cumulative errors in the dimensional chain, reducing assembly accuracy and yield. Pin positioning plates are often secured using an interference fit, which presents challenges such as high manufacturing precision requirements and difficulty controlling the interference fit. Excessive interference fit can lead to assembly difficulties and even damage to parts; while insufficient interference fit can cause the plate to loosen during transportation or use, resulting in loss of its positioning function.

[0005] Therefore, the existing technology mainly has the following problems: first, the empty cavity lacks mechanical fixation, which can easily lead to a decrease in connection reliability due to vibration; second, the pin positioning plate and its fixing structure occupy a large space, resulting in an increase in the volume of the connector; third, the interference fit method has high requirements for manufacturing precision, which can easily cause assembly or fixation failure; finally, the scattered positioning and guiding structures can easily cause dimensional errors to accumulate, affecting assembly accuracy. Summary of the Invention

[0006] In response to the shortcomings of the existing technology, the purpose of the embodiments of the present invention is to provide a crimp-type automotive connector with a compact structure, reliable fixation, and suitable for multiple configurations of vehicle models, so as to improve the stability of the connector in a vibration environment, reduce the volume, and improve the manufacturing yield and assembly accuracy.

[0007] In order to achieve the above objectives, the embodiments of the present invention provide the following technical solutions: A crimp-type automotive connector comprises a shell, a frame opening on one side of the shell, and a pin positioning plate installed on the other side; the frame opening comprises a basic frame opening and a high-profile frame opening, the basic frame opening is used to connect to the wiring harnesses of all vehicle models, and the high-profile frame opening is used to connect to the wiring harnesses of some vehicle models; when the high-profile frame opening is not connected to the vehicle wiring harness, fixed pins are provided at the outermost row of the high-profile frame opening, part of the fixed pins are inserted into the pin positioning plate and are used to connect to the circuit board; mounting pins for mounting the pin positioning plate are provided at both ends of the shell, the mounting pins comprising a fixing seat and an elastic column, the elastic column being located on both sides of the fixing seat and being able to elastically close toward the fixing seat, and the mounting pins at both ends of the shell are arranged to be rotated 90°.

[0008] Optionally, the fixing pin is an L-shaped structure, part of the L-shaped fixing pin passes through the pin positioning plate and is used to connect to the circuit board, and the other part is located in the cavity of the high-profile frame mouth, and the part of the fixing pin in the cavity is not connected to the wiring harness connector.

[0009] Optionally, the fixing seat includes a reinforcing rib and a fixing column, the fixing column is located at both ends of the reinforcing rib and is connected to the reinforcing rib as a whole, the elastic column is located on both sides of the reinforcing rib and is arranged orthogonally to the fixing column, and there is a set gap between the elastic column and the reinforcing rib.

[0010] Optionally, among the mounting pins at both ends of the shell, the direction of the reinforcement ribs of the mounting pin at one end is arranged in a transverse direction to the direction of the reinforcement ribs of the mounting pin at the other end.

[0011] Optionally, the outer wall surface of the fixed column and the outer wall surface of the elastic column are located on the same cylindrical surface.

[0012] Optionally, the fixing seat is further provided with convex ribs, and the convex ribs are arranged on both sides of the reinforcing rib facing the elastic column.

[0013] Optionally, mounting holes are provided at both ends of the pin positioning plate, the mounting pins are inserted into the mounting holes, and the tops of the fixing columns and elastic columns of the mounting pins are both provided with column chamfers.

[0014] Optionally, an external protrusion is provided on the outer wall surface of the elastic column, and a card slot is provided on the opposite sides of the mounting hole. The card slot is protruded away from the outer side of the circumference of the mounting hole, and the card slot arrangement directions of the mounting holes at both ends of the pin positioning plate are orthogonal, and the upper surface of the card slot is mounted in cooperation with the external protrusion on the elastic column.

[0015] Optionally, the upper side of the outer protrusion is a conical outer lead-in surface, the diameter of the outer lead-in surface gradually increases from the end to the root of the mounting column, and the lower side of the outer lead-in surface is a straight surface; the lower side of the mounting hole is a conical inner lead-in surface, the conical direction of the inner lead-in surface is the same as the conical direction of the outer lead-in surface, and the upper side of the inner lead-in surface is a hole positioning surface, and the hole positioning surface cooperates with the outer wall surface of the fixing column.

[0016] Optionally, the lower side of the straight surface of the outer protrusion is a lower inclined surface, and the upper side of the upper surface of the slot is a locking surface. After the pin positioning plate is installed, the locking surface abuts against the lower inclined surface of the outer protrusion.

[0017] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages: 1. In the crimp-type automotive connector of the present invention, a basic frame opening and a high-end frame opening are provided on one side of the shell. The fixed pin portion at the high-end frame opening is inserted into the pin positioning plate and connected to the circuit board. When the connector is used in a low-end vehicle and the high-end frame opening is vacant, the fixed pin can fix the connector and the circuit board to prevent the two from hanging in the vacant area, reduce the relative micro-displacement caused by the vibration and impact of the vehicle, and alleviate the problem of connection performance attenuation. The mounting pins at both ends of the shell are used to install the pin positioning plate. The fixed seat it contains provides basic support, and the elastic columns on both sides can be elastically closed toward the fixed seat to facilitate the installation and fixation of the pin positioning plate; the mounting pins at both ends are arranged to rotate 90 degrees, and the pin positioning plate can be positioned in different directions respectively, avoiding the deviation that may be caused by positioning in a single direction and improving the positioning accuracy. The connector integrates the installation and positioning functions of the pin positioning plate, reduces the use of independent structures, reduces the size of the connector, and is conducive to the arrangement of the electronic controller on the vehicle body.

[0018] 2. For connectors used in low-end models with empty cavities, the reliability of the application is greatly improved by setting fixed pins and circuit boards on the outermost side for connection, avoiding the problem of electrical connection attenuation caused by the connector and circuit board being suspended in the air.

[0019] 3. The connector design uses a guide positioning fixed mounting pin design, which integrates the introduction, positioning, and fixation of the pin positioning plate and the introduction and positioning of the circuit board. It greatly reduces the size of the connector, thereby effectively reducing the size of its application in automotive electronic controllers and making it easier to arrange and install on the vehicle body.

[0020] 4. The connector design uses a guide positioning fixed mounting pin design, which integrates the introduction, positioning, fixation of the pin positioning plate and the introduction and positioning of the circuit board, greatly reducing the superposition of the dimension chain, thereby improving the design accuracy and being more conducive to subsequent processing and assembly.

[0021] 5. Compared with the traditional method of fixing the pin fixing plate by interference fit, the present invention adopts an integrated elastic snap-fit ​​design, which has high compatibility with manufacturing tolerances and more reliable fixation, and can solve the problems caused by excessive or insufficient interference fit in the traditional method.

[0022] Additional advantages of the present invention will be given in the description which follows, and in part will be obvious from the description which follows, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some of the embodiments described in the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. In addition, the sizes or spacings between components are exaggerated to show the positions of the components, and the schematic diagrams are for illustrative purposes only.

[0024] Figure 1 This is a schematic diagram of the connector provided by an embodiment of the present invention; Figure 2 This is a schematic diagram of the assembly connection between the fixed pins and the circuit board provided by an embodiment of the present invention; Figure 3 This is a schematic diagram of the arrangement of mounting pins provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of a mounting pin provided by an embodiment of the present invention from a first perspective; Figure 5 is a schematic diagram of a second viewing angle of a mounting pin provided by an embodiment of the present invention; Figure 6 is a cross-sectional view of a mounting pin provided by an embodiment of the present invention; Figure 7 is a schematic diagram of a pin positioning plate provided by an embodiment of the present invention; Figure 8 is a cross-sectional view of a mounting hole provided by an embodiment of the present invention; Figure 9 This is a schematic diagram of the matching of the mounting pin and the mounting hole provided in an embodiment of the present invention; Figure 10 This is a schematic diagram of the cooperation between the connector housing and the pin positioning plate provided by an embodiment of the present invention; Figure 11 This is a schematic diagram of the connector and circuit board provided by an embodiment of the present invention; In the figure: 1. Housing; 2. Pin positioning plate; 3. Fixed pin; 4. Circuit board; 101. Basic frame opening; 102. High-profile frame opening; 103. First mounting pin; 104. Second mounting pin; 1031. Column chamfer; 1032. Elastic column; 1033. External protrusion; 1034. Raised rib; 10331. External lead-in surface; 10332. Straight surface; 10333. Lower inclined surface; 1035. Fixed column; 1036. Reinforcement rib; 201. First mounting hole; 2011. Inner lead-in surface; 2012. Hole positioning surface; 2013. Engaging surface; 202. Second mounting hole; DETAILED DESCRIPTION It should be noted that the following detailed description is illustrative and is intended to further illustrate the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] like Figure 1 、 Figure 2 As shown, this embodiment proposes a crimping type automotive connector, the connector has a housing 1, and one side of the housing 1 has a frame opening, the frame opening includes a basic frame opening 101 and a high-end frame opening 102, the basic frame opening 101 is used to connect with the wiring harness of all models, and the high-end frame opening 102 is used to connect with the wiring harness of some models. When the high-end frame opening 102 is not connected to the automotive wiring harness, the outermost row of the high-end frame opening 102 is provided with fixed pins 3, and part of the fixed pins 3 is inserted in the pin positioning plate 2 and is used to connect with the circuit board 4; as shown Figure 3 、 Figure 4 、 Figure 5 As shown, mounting pins for mounting the pin positioning plate 2 are provided at both ends of the shell 1, and the mounting pins include a fixing seat and an elastic column 1032. The elastic column 1032 is located on both sides of the fixing seat and can be elastically closed toward the fixing seat. The mounting pins at both ends of the shell 1 are arranged to be rotated 90°.

[0026] The frame opening on one side of the housing 1 is divided into a basic frame opening 101 and a high-end frame opening 102. The basic frame opening 101 is suitable for all vehicle models, while the high-end frame opening 102 is only used for some vehicle models, allowing the connector to adapt to different configuration requirements. That is, when the connector is used in a high-end vehicle model, both the basic frame opening and the high-end frame opening are connected to the vehicle wiring harness; when the connector is used in a low-end vehicle model, only the basic frame opening is connected to the vehicle wiring harness. Fixed pins 3 are set in the outermost row of the high-end frame opening 102, and these pins are partially inserted into the pin positioning plate 2, and finally connected to the circuit board 4. This ensures that even when the low-end vehicle model only uses the basic frame opening 101, the fixed pins 3 in the high-end frame opening 102 area can provide mechanical fixation with the circuit board 4, thereby eliminating the suspended state of this area. The mounting pins set at both ends of the housing 1 are used to install the pin positioning plate 2. The mounting pins are composed of a fixed base and elastic columns 1032 on both sides. The elastic columns 1032 have the ability to elastically close toward the fixed base. This elastic design provides the basis for the snap-fit ​​installation of the pin positioning plate 2. The mounting pins at both ends of the housing 1 are arranged 90 degrees apart. This spatial arrangement provides positioning and constraint for the pin positioning plate 2 in both the X and Y directions, avoiding the risk of over-positioning in a single direction and ensuring assembly accuracy. This connector solves the problems of the connector and circuit board 4 being suspended due to an empty cavity, as well as the increased size caused by additional positioning structures. Through its integrated design and elastic fixing method, it achieves connector miniaturization and improves reliability.

[0027] The fixing pin 3 is an L-shaped structure, part of the L-shaped fixing pin 3 passes through the pin positioning plate 2, and the other part is located in the cavity of the high-end frame opening 102. The part of the fixing pin 3 in the cavity is not connected to the wiring harness connector, ensuring that in low-end models, the vacant high-end frame opening 102 is mechanically fixed to the circuit board 4 through the fixing pin 3, while in high-end models, the pin can be used for electrical connection and mechanical fixation at the same time.

[0028] The fixing seat includes a reinforcing rib 1036 and a fixing column 1035. The fixing column 1035 is located at both ends of the reinforcing rib 1036 and is connected to the reinforcing rib 1036 as a whole. The elastic column 1032 is located on both sides of the reinforcing rib 1036 and is arranged orthogonally to the fixing column 1035. There is a set gap between the elastic column 1032 and the reinforcing rib 1036.

[0029] The fixing seat is integrated with the reinforcing ribs 1036 and the fixing columns 1035 at both ends. This design improves the overall structural strength and rigidity of the fixing seat, making it less likely for the fixing columns 1035 to deform when serving as a positioning reference, thus ensuring positioning accuracy. The elastic columns 1032 are arranged on both sides of the reinforcing ribs 1036 and are orthogonal to the fixing columns 1035. This layout decouples the elastic deformation movement direction of the elastic columns 1032 from the rigid positioning direction of the fixing columns 1035, without interfering with each other. A set gap (such as Figure 6 As shown), the necessary movement space is provided for the elastic column 1032 to undergo sufficient elastic deformation inward, thereby ensuring the smooth realization of the snap-fit ​​function.

[0030] The mounting pins at both ends of the housing 1 are arranged with the reinforcing ribs 1036 of one end oriented in a transverse direction to the reinforcing ribs 1036 of the other end. When the mounting pins are inserted into the mounting holes of the pin positioning plate 2, the fixing column 1035 of one mounting pin primarily constrains movement of the pin positioning plate 2 in the X direction, while the other primarily constrains movement in the Y direction. Together, these pin positioning pins ensure complete in-plane positioning of the pin positioning plate 2, effectively avoiding interference and assembly difficulties that could arise from overconstraints that might otherwise occur when the pins are arranged in the same direction.

[0031] The outer wall of the fixing column 1035 and the outer wall of the elastic column 1032 are located on the same cylindrical surface. When the mounting pin is inserted into the mounting hole of the pin positioning plate 2 or engaged with the circuit board 4, it can form a uniform contact with the hole wall, while improving the positioning stability, reducing the positioning deviation caused by poor contact, and ensuring the position accuracy of the pin positioning plate 2 and circuit board 4 after installation.

[0032] The mounting base is also provided with ribs 1034, arranged on either side of the reinforcing rib 1036 facing the elastic column 1032. These ribs 1034 act as mechanical limiters for the inward elastic deformation of the elastic column 1032. During assembly or under unexpected stress, if the elastic column 1032 deforms excessively inward, its inner side will contact and abut against the ribs 1034, preventing further deformation of the elastic column 1032 and preventing plastic deformation or fracture due to excessive bending, thereby improving the reliability and service life of the mounting pin.

[0033] like Figure 7 As shown, the pin positioning plate 2 is provided with mounting holes at both ends, into which the mounting pins are inserted. The tops of the mounting pin's fixed column 1035 and elastic column 1032 are both provided with column chamfers 1031. The column chamfers 1031 serve as a guide during the initial installation, compensating for initial centering errors and guiding the mounting pins smoothly into the mounting holes, making the assembly process smoother and reducing the need for precise alignment.

[0034] like Figure 6 、 Figure 8 、 Figure 9 As shown, an outer protrusion 1033 is provided on the outer wall surface of the elastic column 1032, and a card slot is provided on the opposite sides of the mounting hole. The card slot is protruded away from the outer side of the circumference of the mounting hole, and the card slot arrangement direction of the mounting holes at both ends of the pin positioning plate 2 is orthogonal, and the upper surface of the card slot is mounted in coordination with the outer protrusion 1033 on the elastic column 1032.

[0035] External protrusions 1033 are provided on the outer wall of the elastic column 1032, and slots are provided on opposite sides of the mounting hole. The slots protrude outward and are arranged orthogonally. The orthogonal arrangement of the slots aligns with the orthogonal arrangement of the mounting pins, ensuring that the pin positioning plate 2 is constrained in both the X and Y directions. The cooperation between the external protrusions 1033 and the mounting holes ensures that the pin positioning plate 2 is securely fixed once installed, preventing it from loosening from the mounting pins.

[0036] The upper side of the outer protrusion 1033 is a conical outer lead-in surface 10331, the diameter of which gradually increases from the end to the root of the mounting column, and the lower side of the outer lead-in surface 10331 is a straight surface 10332; the lower side of the mounting hole is a conical inner lead-in surface 2011, the conical direction of the inner lead-in surface 2011 is the same as the conical direction of the outer lead-in surface 10331, and the upper side of the inner lead-in surface 2011 is a hole positioning surface 2012, which cooperates with the outer wall surface of the fixing column 1035.

[0037] The upper side of the outer protrusion 1033 is a conical outer guide surface 10331, whose diameter gradually increases from top to bottom. This inclined surface can contact the inner surface of the mounting hole during assembly and generate a guiding force component, forcing the elastic column 1032 to smoothly contract inward. The straight surface 10332 on the lower side of the outer guide surface 10331 is used to provide a stable mating surface. The lower side of the mounting hole 201 is provided with a conical inner guide surface 2011, whose taper matches the outer guide surface 10331 to assist in the introduction. The hole positioning surface 2012 on the upper side of the guide surface 2011 is fitted with the outer wall surface of the fixing column 1035 after assembly is completed. This mating surface helps to limit the radial shaking of the pin positioning plate 2 and improve the positioning stability.

[0038] The lower side of the straight surface 10332 of the outer protrusion 1033 is a lower inclined surface 10333 , and the upper side of the hole positioning surface 2012 of the mounting hole 201 is a snap-fit ​​surface 2013 . After the pin positioning plate 2 is installed, the snap-fit ​​surface 2013 abuts against the lower inclined surface 10333 of the outer protrusion 1033 .

[0039] When the pin positioning plate 2 is in place, its engaging surface 2013 precisely abuts the lower bevel 10333 of the outer protrusion 1033 of the elastic column 1032. This beveled design allows for certain axial height tolerances while still ensuring effective contact and engagement through the sliding compensation of the bevel, improving compatibility with component manufacturing and assembly tolerances. The abutment between the engaging surface 2013 and the lower bevel 10333 ensures that the pin positioning plate 2 is securely locked in the axial direction, eliminating axial play.

[0040] like Figure 3 As shown, the housing 1 includes a first mounting pin 103 and a second mounting pin 104. Figure 4 As shown, the first mounting pin 103 includes four column chamfers 1031, which are used as a guide when the pin positioning plate 2 is installed. Similarly, they are also used as a guide when the circuit board 4 is pressed.

[0041] When the pin positioning plate 2 is inserted and slides into engagement with the two outer protrusions 1033, the two elastic columns 1032 will gradually tilt inward. When the pin positioning plate 2 is completely slid in and assembled into place, it engages with the two outer protrusions 1033, and the two elastic columns 1032 achieve partial elastic rebound.

[0042] like Figure 6 As shown, the outer protrusion 1033 is composed of an outer guide surface 10331, a straight surface 10332 and a lower inclined surface 10333. When the pin positioning plate 2 is installed, the outer guide surface 10331 will slide into engagement with the pin positioning plate 2, causing the two elastic columns 1032 to flip inward. The straight surface 10332 ensures that the outer protrusion 1033 has sufficient strength to avoid wear during the sliding engagement process. After the pin positioning plate 2 is assembled in place, the lower inclined surface 10333 engages with its engaging surface 2013 and cooperates with its engaging surface 2013. The design of its inclined surface can make up for the defect that the engaging surface 2013 of the pin positioning plate 2 cannot be engaged and fixed due to the height tolerance. After the lower inclined surface 10333 engages and cooperates with the engaging surface 2013 of the pin positioning plate 2, the pin positioning plate 2 can be kept fixed in the Z direction without any movable gap. At the same time, this engaging fit also causes the elastic column 1032 to have a slight elastic flip inward. Figure 9 As shown, this state is a state in which the lower inclined surface 10333 and the engaging surface 2013 of the pin positioning plate 2 are engaged and fixed after the pin positioning plate 2 is installed in place.

[0043] During assembly, the elastic column 1032 of the mounting pin undergoes elastic deformation as a whole. After being assembled into place, it recovers as a whole, and its support strength after recovery is higher. Through the engagement of the inclined surface and the assembly part, it can better adapt to its own tolerance and the tolerance of the assembly part, thereby avoiding the gap problem between the assembly part and the graded engagement.

[0044] Before or after the pin positioning plate 2 is installed, when someone intentionally or unintentionally pinches the elastic column 1032, the elastic column 1032 will flip inward and contact the rib 1034, preventing the elastic column 1032 from further flipping, thereby preventing plastic deformation failure caused by excessive flipping.

[0045] The two fixing posts 1035 cooperate with the positioning holes of the pin positioning plate 2 to provide positioning when inserted. Similarly, they also cooperate with the holes of the circuit board 4 to provide positioning when crimping the circuit board 4. The reinforcing ribs 1036 ensure that the fixing posts 1035 maintain sufficient strength and do not deform during the positioning process.

[0046] The independent functional features of the second mounting pins 104 are the same as the corresponding functional features of the first mounting pins 103. The difference is that the two outer protrusions 1033 of the first mounting pin 103 are set in the Y direction, and the two fixing columns 1035 are set in the X direction; the two outer protrusions 1033 of the second mounting pin 104 are set in the X direction, and the two fixing columns 1035 are set in the Y direction. When the pin positioning plate 2 is installed, two elastic columns 1032 are used to position and match with the pin positioning plate 2 hole positioning surface 2012 in the X direction, and two elastic columns 1032 are used to position and match with the pin positioning plate 2 hole positioning surface 2012 in the Y direction, which ensures sufficient and precise positioning in the X and Y directions respectively, and avoids the problem of overfitting due to the position tolerance of the column or hole, such as Figure 10 Similarly, when the positioning cylindrical surface of the fixing column 1035 is installed in the circuit board 4, it is positioned and matched by using the local cylindrical surface in the X and Y directions and the circular hole of the circuit board 4, which not only ensures sufficient and precise positioning, but also avoids the problem of over-fitting due to position tolerance, as shown in FIG. Figure 11 shown.

[0047] The orientation of the fixing post 1035 will avoid overfitting caused by position errors. Figure 10 As shown, one fixing post 1035 has its positioning surface positioned in the X direction, thereby providing positioning in the X direction, while the other fixing post 1035 is positioned in the Y direction, thereby providing positioning in the Y direction. This achieves full-directional positioning while avoiding over-positioning in a particular direction. If both fixing posts 1035 are positioned in the X direction, and the holes of the pin positioning plate 2 are offset in the X direction due to an error, the positioning plate may over-fit in the X direction during installation, resulting in interference and failure to install.

[0048] like Figure 7As shown, the pin positioning plate 2 includes a first mounting hole 201 and a second mounting hole 202. The inner guide surface 2011 serves as a guide during installation, and the hole positioning surface 2012 serves to position and cooperate with the fixing column 1035 during installation. At the same time, it also slides into engagement with the outer guide surface 10331 during installation, causing the elastic column 1032 to flip inward. After the pin positioning plate 2 is assembled in place, the engaging surface 2013 and the lower inclined surface 10333 engage and contact, and are fixed in the Z direction.

[0049] The functional characteristics of the second mounting hole 202 are the same as the functional characteristics of the first mounting hole 201. The difference is that the engaging surface 2013 of the first mounting hole 201 is arranged in the Y direction, and the engaging surface 2013 of the second mounting hole 202 is arranged in the X direction. Figure 10 shown.

[0050] To sum up, the connector in the present invention contains two cavities. When applied to low-end models and only one of the cavities is used, a row of fixed pins 3 is designed to be arranged on the outermost side of the empty cavity for connection with the circuit board 4; when assembled into an electronic controller, a closed-loop mechanical connection of the circuit board 4-connector-controller housing-circuit board 4 is formed, that is, the circuit board 4 and the connector are connected by crimping, the connector and the controller housing are connected by interference fit, and the controller housing and the circuit board 4 are fastened by screws, which avoids the problem of the connector and the circuit board 4 being suspended in the empty cavity area, enables it to be stably connected during use, and solves the problem of connection performance degradation caused by long-term vibration impact.

[0051] The connector of the present invention integrates the guidance, positioning, and fixation of the pin locating plate 2, as well as the guidance and positioning of the circuit board 4, into a single design, namely, a guide, positioning, and fixation mounting pin. This integrated design significantly reduces the connector's size while also improving design precision. Furthermore, the guide, positioning, and fixation mounting pin incorporates a resilient snap-fit ​​structure, which secures the pin locating plate 2. This resilient snap-fit ​​feature solves assembly difficulties and insufficient retention caused by interference fit precision issues, significantly improving manufacturability and fixation reliability.

[0052] Although the above describes the specific embodiments of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A crimp-type automotive connector, characterized in that: The connector has a housing, one side of the housing has a frame opening, and the other side of the housing is equipped with a pin positioning plate; The frame opening includes a basic frame opening and a high-end frame opening. The basic frame opening is used to connect to the wiring harness of all models, and the high-end frame opening is used to connect to the wiring harness of some models. When the high-end frame opening is not connected to the vehicle wiring harness, a fixed pin is set at the outermost row of the high-end frame opening. Part of the fixed pin is plugged into the pin positioning plate and is used to connect to the circuit board. Mounting pins for mounting a pin positioning plate are provided at both ends of the shell. The mounting pins include a fixing seat and an elastic column. The elastic column is located on both sides of the fixing seat and can be elastically closed toward the fixing seat. The mounting pins at both ends of the shell are arranged in a 90° rotation.

2. The crimp-type automotive connector according to claim 1, wherein: The fixing pin is an L-shaped structure. Part of the L-shaped fixing pin passes through the pin positioning plate and is used to connect to the circuit board, and the other part is located in the cavity of the high-profile frame mouth. The part of the fixing pin in the cavity is not connected to the wiring harness connector.

3. The crimp-type automotive connector according to claim 1, wherein: The fixing seat includes a reinforcing rib and a fixing column. The fixing column is located at both ends of the reinforcing rib and is connected to the reinforcing rib as a whole. The elastic column is located on both sides of the reinforcing rib and is arranged orthogonally to the fixing column. There is a set gap between the elastic column and the reinforcing rib.

4. The crimp-type automotive connector according to claim 3, wherein: Among the mounting pins at both ends of the shell, the direction of the reinforcement ribs of the mounting pin at one end is arranged in a transverse direction to the direction of the reinforcement ribs of the mounting pin at the other end.

5. The crimp-type automotive connector according to claim 3, wherein: The outer wall surface of the fixed column and the outer wall surface of the elastic column are located on the same cylindrical surface.

6. The crimp-type automotive connector according to claim 3, wherein: The fixing seat is further provided with convex ribs, which are arranged on both sides of the reinforcing rib facing the elastic column.

7. The press-fit automotive connector according to claim 3, wherein: Both ends of the pin positioning plate are provided with mounting holes, the mounting pins are inserted into the mounting holes, and the tops of the fixing columns and elastic columns of the mounting pins are both provided with column chamfers.

8. The press-fit automotive connector according to claim 7, wherein: An external protrusion is provided on the outer wall surface of the elastic column, and a card slot is provided on the opposite sides of the mounting hole. The card slot is protruded away from the outer side of the circumference of the mounting hole, and the card slot arrangement directions of the mounting holes at both ends of the pin positioning plate are orthogonal. The upper surface of the card slot is mounted in coordination with the external protrusion on the elastic column.

9. The press-fit automotive connector according to claim 8, wherein: The upper side of the outer protrusion is a conical outer guide surface, the diameter of the outer guide surface gradually increases from the end to the root of the mounting column, and the lower side of the outer guide surface is a straight surface; the lower side of the mounting hole is a conical inner guide surface, the conical direction of the inner guide surface is the same as the conical direction of the outer guide surface, and the upper side of the inner guide surface is a hole positioning surface, which cooperates with the outer wall surface of the fixing column.

10. The press-fit automotive connector according to claim 9, wherein: The lower side of the straight surface of the outer protrusion is a lower inclined surface, and the upper side of the upper surface of the slot is a clamping surface. After the pin positioning plate is installed, the clamping surface abuts against the lower inclined surface of the outer protrusion.

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