Vehicle-mounted connector

Abstract

The utility model discloses a vehicle-mounted connector, which comprises a plug connector and an external shell, and is characterized in that the plug connector comprises a hollow sleeve conductor and a central conductor coaxially fixed in the sleeve conductor through an insulating medium; the outer shell comprises a panel cavity-shaped rear shell and a butt joint head with a butt joint cavity, and the bottom of the butt joint head is assembled in a positioning groove preset in an outer panel of the rear shell; a limiting table is annularly arranged on the inner wall of the bottom of the butt joint cavity, and a limiting shoulder part which expands outwards in the circumferential direction, abuts against the limiting table and is used for pressing and fixing the butt joint is formed on the outer wall part of the sleeve conductor in a downward riveting mode. According to the utility model, the butt joint is separated from the rear shell, and the butt joint is tightly pressed and fixed on the rear shell in a riveting fixing manner, so that the cost of the rear shell is greatly reduced, the forming quality of the rear shell is improved, enough holding force can be provided for the butt joint, the butt joint is prevented from falling off from the rear shell in the drawing process, and the service life of the rear shell is prolonged. And meanwhile, the assembly process is effectively simplified, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric connectors, and in particular relates to a vehicle-mounted connector. Background Art

[0002] Currently, most cars are equipped with onboard cameras. These are image-capturing devices installed on the vehicle to monitor the surrounding environment. They offer advantages such as convenient reversing, driving record recording, and real-time observation of the vehicle's interior and exterior. An onboard camera typically consists of a front housing, a lens and circuit board mounted within the housing, and a rear connector that mates with the front housing. One end of the rear connector connects to a mating terminal on the circuit board for electrical connection, while the other end of the rear connector connects to an external vehicle wiring harness for electrical connection, thereby receiving data collected by the camera and controlling the camera.

[0003] However, the Fakra head and backshell of existing automotive cameras are mostly integrated, forged from aluminum alloy. For example, the automotive connector with Publication No. CN218525802U has a complex Fakra head structure, which results in a complex forging die and a short die life. Furthermore, after forging, features such as holes need to be CNC-machined, resulting in a complex process, long production cycles, and high production costs. Furthermore, the integrated Fakra head has a fixed insertion angle, requiring a new mold to adjust the insertion angle to meet customer needs, making it difficult to flexibly meet customer requirements for various orientations. Another example is a patent application filed by our company last year with Publication No. CN219554002U, which utilizes a separately molded metal shell and then secures the Fakra head to it via overmolding. While this reduces molding complexity and saves costs, it also results in low assembly efficiency. Furthermore, the Fakra head has weak retention, can withstand low insertion and removal forces, and has a short service life.

[0004] With the current price reduction of new energy vehicles on the market, competition in the automotive market is becoming increasingly fierce. As a key component of automotive electronic systems, the cost control of various in-vehicle connectors has always been a major factor affecting the total vehicle cost. By simultaneously optimizing the structure and process of various automotive components and reducing production costs, automakers' demands for improved product cost-performance can be better met. Therefore, there is an urgent need to further optimize and improve existing in-vehicle connectors and develop in-vehicle connectors with stronger processability, lower manufacturing and assembly costs, higher structural strength, and greater flexibility. This will ensure product performance while better adapting to the fierce market environment of the future and enhancing product competitiveness. Utility Model Content

[0005] The purpose of the utility model is to further optimize and improve the existing vehicle-mounted camera rear shell connector to ensure product performance while further reducing production costs and improving assembly efficiency and assembly flexibility.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A vehicle-mounted connector comprises a plug-in component and an external shell, wherein the plug-in component comprises a hollow sleeve conductor, a center conductor extending in the axial direction of the hollow internal space, and an insulating medium arranged between the sleeve conductor and the center conductor to maintain the two conductors relative to each other; the external shell comprises a rear shell in the shape of a panel cavity and a docking joint having a docking cavity, the bottom of the docking joint being assembled in a positioning groove preset on the outer panel of the rear shell; wherein the inner wall of the bottom of the docking cavity is circumferentially provided with a limit platform, and the outer wall portion of the sleeve conductor is riveted downward to form a limit shoulder that expands circumferentially outward and abuts against the limit platform for pressing and fixing the docking joint.

[0008] Furthermore, the installation and fixing portion of the sleeve conductor is interference-fitted with the through hole formed in the positioning groove of the rear shell.

[0009] Furthermore, the mounting and fixing portion and the rear shell are further fastened by using a dotting process.

[0010] Furthermore, at least one sealing groove is provided on the outer wall of the sleeve conductor in contact with the limiting platform, and a sealing ring is installed in the sealing groove to improve the sealing between the sleeve conductor and the butt joint.

[0011] Furthermore, the docking connector is a Fakra head that directly mates with the Fakra female end of the vehicle body wiring harness.

[0012] Furthermore, a positioning plate is provided at the bottom of the docking joint, and the outer contour of the positioning plate is a regular, centrally symmetrical pattern. Accordingly, the shape of the positioning groove is the same as that of the positioning plate, so that the positioning plate can be embedded in the positioning groove at multiple installation angles.

[0013] Furthermore, the installation and fixing portion of the sleeve conductor expands outward in the circumferential direction to form a floating chamber, and a floating head is installed in the floating chamber.

[0014] Furthermore, the floating head includes a floating outer conductor made of an elastic metal sheet and a floating inner conductor fixed in the floating outer conductor in a coaxial configuration via a floating insulator.

[0015] Furthermore, the joining gap between the sleeve conductor and the rear shell, and the joining gap between the sleeve conductor and the butt joint are both filled with sealant.

[0016] Compared with the prior art, the vehicle-mounted connector provided by the present invention has the following beneficial technical effects:

[0017] The utility model separates the butt joint from the rear shell and fixes the butt joint tightly to the rear shell by riveting, which not only greatly reduces the cost of the rear shell and improves the molding quality of the rear shell, but also provides sufficient holding force for the butt joint to prevent it from falling off from the rear shell during the pulling process, and also effectively simplifies the assembly process and improves production efficiency. In addition, by adopting a multiple sealing method combining a sealing ring and a sealant, the waterproof performance is better, which effectively improves the comprehensive competitiveness of the product in the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described below are only some embodiments. A person skilled in the art can derive other drawings based on these drawings without inventive effort. In the drawings:

[0019] Figure 1 A schematic diagram of the front structure of a vehicle-mounted connector provided by an embodiment of the present utility model;

[0020] Figure 2 A schematic diagram of the back structure of a vehicle-mounted connector provided by an embodiment of the present utility model;

[0021] Figure 3 A cross-sectional view of a vehicle-mounted connector provided in an embodiment of the present utility model;

[0022] Figure 4 An exploded view of a vehicle-mounted connector provided in an embodiment of the present utility model;

[0023] Figure 5 A schematic structural diagram of a rear housing of a vehicle-mounted connector provided by an embodiment of the present utility model;

[0024] Figure 6 A schematic structural diagram of a docking head in a vehicle-mounted connector provided by an embodiment of the present utility model;

[0025] Figure 7 The present invention provides a schematic structural diagram of a plug-in component in a vehicle-mounted connector according to an embodiment of the present invention.

[0026] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0027] 1-back shell, 101-outer panel, 102-positioning groove, 103-through hole, 2-butt joint, 201-butt joint cavity, 202-positioning insert, 203-clip, 204-positioning plate, 205-limiting platform, 3-sleeve conductor, 301-butt joint tube part, 302-mounting and fixing part, 303-sealing groove, 304-limiting shoulder, 305-floating chamber, 4-center conductor, 5-insulating medium, 6-sealing ring, 7-sealing glue, 8-floating outer conductor, 9-floating inner conductor, 10-floating insulator. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0029] The embodiment of the present utility model provides a vehicle-mounted connector, comprising an external housing and a plug-in component. Specifically:

[0030] like Figure 5 and Figure 6 As shown, in this embodiment, the external shell includes a rear shell 1 in the shape of a panel cavity and a docking joint 2 with a docking cavity 201. The docking joint 2 and the rear shell 1 are independent parts. The docking joint 2 is a Fakra head, which is a connector that directly mates with the Fakra female end of the vehicle body wiring harness. A positioning strip 202 and a buckle 203 are provided on its outer wall, and the plug-in end of the docking joint 2 is also provided with an inner chamfer. The positioning strip 202 and the inner chamfer can play a positioning and guiding role when the connectors are plugged in, thereby ensuring the plug-in accuracy of the connectors. The buckle 203 can be used to engage the Fakra head with the Fakra female end of the vehicle body wiring harness, ensuring a reliable connection of the camera rear cover connector.

[0031] The bottom of the docking connector 2 is also integrally formed with a positioning plate 204. The outer contour of the positioning plate 204 is a regular, centrally symmetrical shape, such as a square or regular polygon with chamfered corners. The rear shell 1 is made of metal, which can effectively eliminate electromagnetic interference, provide shielding, and improve the quality of signal transmission. The outer panel 101 of the rear shell 1 (i.e., the contact surface with the docking connector 2) is provided with a positioning groove 102 of a certain depth. The shape of the positioning groove 102 is the same as that of the positioning plate 204, allowing the positioning plate 204 to be embedded in the positioning groove 102 at multiple installation angles, flexibly meeting the customer's needs for different docking angles. In addition, a through hole 103 is provided in the center of the positioning groove 102 to facilitate the installation of subsequent connectors.

[0032] like Figures 1 to 7 As shown, the connector includes a hollow sleeve conductor 3, a center conductor 4 extending in the axial direction of the hollow interior space, and an insulating medium 5 arranged between the two conductors to maintain the two conductors relative to each other. The sleeve conductor 3 is a zinc die-cast component made in an integral manner by die-casting. As the outer conductor of the coaxial connector, it can provide effective electromagnetic shielding for internal signal transmission. The sleeve conductor 3 includes a docking sleeve portion 301 and a mounting and fixing portion 302. The docking sleeve portion 301 is located outside the rear shell 1 and is used to electrically contact the outer conductor of the Fakra female end. The mounting and fixing portion 302 is partially interference-fitted with the through hole 103 opened on the positioning groove 102 of the rear shell 1. It is installed and fixed on the through hole 103 through a pressing process, and extends into the interior of the rear shell 1 to connect to the board-end connector on the camera circuit board. To ensure sufficient retention, the mounting portion 302 and the rear housing 1 are further secured using a dotting process (i.e., mechanically stamping to create a dotted connection between the sleeve conductor 3 and the rear housing 1). This enhances the stability and mechanical strength of the connection between the sleeve conductor 3 and the rear housing 1, ensuring that they do not easily separate or loosen during use. The center conductor 4 serves as the connector's inner conductor, transmitting signals. Made of brass, it is coaxially positioned within the sleeve conductor 3. The insulating medium 5 is inserted between the center conductor 4 and the sleeve conductor 3, with both ends of the center conductor 4 exposed outside the insulating medium 5.

[0033] In order to limit the axial position of the butt joint 2 and provide sufficient holding force to prevent the butt joint 2 from falling off from the rear shell 1 during the drawing process, and to improve the assembly efficiency. Figure 3 and Figure 4 As shown, as a preferred embodiment, the inner wall of the bottom of the docking cavity 201 is provided with a circle of limit platforms 205. Correspondingly, the outer wall of the mounting and fixing portion 302 of the sleeve conductor 3 is riveted downward to form a limit shoulder 304 that expands circumferentially outward and abuts against the limit platform 205. The docking head 2 can be tightly pressed onto the rear shell 1 through the limit shoulder 304.

[0034] like Figure 3 and Figure 7As shown, in order to prevent the connector from loosening and leaking after multiple plugging and unplugging, a circle of sealing grooves 303 is also provided on the outer wall where the mounting and fixing portion 302 contacts the limit platform 205. A sealing ring 6 is installed in the sealing groove 303 to improve the sealing between the sleeve conductor 3 and the docking joint 2. Furthermore, the joint gap between the sleeve conductor 3 and the rear shell 1, as well as the joint gap between the insulating medium 5 and the sleeve conductor 3 are also filled with sealant 7. Moreover, since the docking joint 2 and the sleeve conductor 3 are made of different materials in this embodiment, in order to prevent the sealing between the two from being affected by thermal expansion and contraction, the joint gap between the docking joint 2 and the sleeve conductor 3 is also filled with sealant 7. The sealant 7 uses a dispensing process to seal the joint. Compared with the sealing ring 6, it not only has higher production efficiency, but also can more comprehensively contact the gap. The present invention has a better waterproof effect by adopting this double-sealed sealing structure.

[0035] Furthermore, to further enhance connector reliability, a floating head is provided on the non-pluggable end of the sleeve conductor 3 (i.e., the end intended for connection to the board-side connector on the camera circuit board). In a preferred embodiment, the end of the sleeve conductor 3 located within the rear housing 1 is circumferentially expanded (i.e., the inner diameter of the mounting and fixing portion 302 of the sleeve conductor 3 is larger than the inner diameter of the mating portion 301 of the sleeve conductor 3), forming a floating chamber 305 within which the floating head can freely move within a certain range. Furthermore, a fixing slot for mounting the floating head is provided on the inner sidewall above the floating chamber 305.

[0036] Correspondingly, the floating head includes a floating outer conductor 8, a floating inner conductor 9, and a floating insulator 10. The floating outer conductor 8 is made of an elastic metal sheet, with multiple flexible claws evenly spaced circumferentially at one end. These claws are secured in the fixed slots, electrically connecting the sleeve conductor 3 to the floating outer conductor 8. An inwardly bent stopper is provided between two adjacent flexible claws to axially limit the floating insulator 10. A central jack for inserting the center conductor 4 is provided in the center of the floating inner conductor 9, which is coaxially fixed within the floating outer conductor 8 via the floating insulator 10. Multiple outwardly bent elastic contact pieces are spaced at intervals at the other end of the floating outer conductor 8. These multiple elastic contact pieces form a trumpet-shaped shape, which serves as a guide during the mating process between the floating head and the board-end connector. The floating head can effectively compensate for gaps and deviations between the sleeve conductor 3 and the board-end connector on the camera circuit board, making the contact tighter and more reliable, thereby improving the performance and stability of the connector.

[0037] The above-described embodiments merely represent implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A vehicle-mounted connector, characterized in that: include: A plug connector comprises a hollow sleeve conductor (3), a center conductor (4) extending in the axial direction in the hollow interior space, and an insulating medium (5) disposed between the sleeve conductor (3) and the center conductor to hold the two conductors mutually. An external shell comprises a panel cavity-shaped rear shell (1) and a docking head (2) having a docking cavity (201), wherein the bottom of the docking head (2) is assembled in a positioning groove (102) preset on the outer panel (101) of the rear shell (1); The inner wall of the bottom of the docking cavity (201) is provided with a limiting platform (205), and the outer wall of the sleeve conductor (3) is riveted downward to form a limiting shoulder (304) that expands circumferentially outward and abuts against the limiting platform (205) for pressing and fixing the docking joint (2).

2. The vehicle-mounted connector according to claim 1, wherein: The mounting and fixing portion (302) of the sleeve conductor (3) is interference-fitted with the through hole (103) provided on the positioning groove (102) of the rear shell (1).

3. The vehicle-mounted connector according to claim 2, characterized in that: The mounting and fixing portion (302) and the rear shell (1) are further fastened by using a dotting process.

4. The vehicle-mounted connector according to claim 1, wherein: At least one sealing groove (303) is further provided on the outer wall of the sleeve conductor (3) in contact with the limiting platform (205), and a sealing ring (6) is installed in the sealing groove (303) to improve the sealing performance between the sleeve conductor (3) and the docking joint (2).

5. The vehicle-mounted connector according to claim 1, characterized in that: The docking connector (2) is a Fakra connector that directly mates with the Fakra female end of the vehicle body wiring harness.

6. The vehicle-mounted connector according to claim 1, characterized in that: A positioning plate (204) is provided at the bottom of the docking joint (2), and the outer contour of the positioning plate (204) is a centrally symmetrical regular pattern. Accordingly, the shape of the positioning groove (102) is the same as that of the positioning plate (204), so that the positioning plate (204) can be embedded in the positioning groove (102) at multiple installation angles.

7. The vehicle-mounted connector according to claim 1, characterized in that: The installation and fixing portion (302) of the sleeve conductor (3) expands outward in the circumferential direction to form a floating chamber (305), and a floating head is installed in the floating chamber (305).

8. The vehicle-mounted connector according to claim 7, characterized in that: The floating head comprises a floating outer conductor (8) made of an elastic metal sheet and a floating inner conductor (9) fixed in the floating outer conductor (8) in a coaxial configuration via a floating insulator (10).

9. The vehicle-mounted connector according to any one of claims 1 to 8, characterized in that: The joint gap between the sleeve conductor (3) and the rear shell (1), and the joint gap between the sleeve conductor (3) and the butt joint (2) are both filled with sealant (7).

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