A board end connector having coaxial and differential or power functions

Abstract

The utility model discloses a board end connector with coaxial and differential or power function, which comprises an insulating seat, a functional terminal for transmitting differential signals or power conduction, which is arranged in the insulating seat and has a pin part exposed at the lower end surface of the insulating seat, and a coaxial connector main body fixedly installed on the insulating seat and located beside the functional terminal, with a soldering leg of a center conductor in the coaxial connector main body exposed at the lower end surface of the insulating seat. The utility model integrates the functional terminal and the coaxial connector main body on the insulating seat, with the soldering leg of the center conductor in the coaxial connector main body and the pin part of the functional terminal both exposed at the lower end surface of the insulating seat. The coaxial connector main body is used to realize the signal (i.e. coaxial signal) transmission of the camera, while the functional terminal is used to realize the power transmission or differential signal transmission, i.e. to realize the power conduction function or differential signal transmission function, so that the utility model is flexible and convenient to use.

Description

Technical fields:

[0001] This utility model relates to the technical field of connector products, and specifically to a board-end connector with coaxial and differential or power supply functions. Background technology:

[0002] SMB connectors are coaxial connectors used for camera connections. They are widely used in new energy vehicles for intelligent driver assistance, pedestrian detection, and ADAS functions such as APA automatic parking and blind spot monitoring.

[0003] Existing SMB connectors generally include a housing, an insulator, and an inner conductor. The inner conductor passes through the insulator and extends into the mating interface of the housing. The housing, insulator, and inner conductor are coaxially arranged. However, this type of SMB connector does not have a power conduction function, making it inflexible and inconvenient to use.

[0004] For example, Chinese utility model patent application number 202321334905.3 discloses a high-holding-force SMB connector, which includes an outer conductor, an insulator, and an inner conductor. One end of the outer conductor has a positioning groove in its inner wall. The insulator is fitted inside the outer conductor, and its outer wall has a raised rib. The raised rib is interference-fitted with the positioning groove to limit the relative displacement between the outer conductor and the insulator. The inner conductor passes through the insulator. This high-holding-force SMB connector has the following problems: it is for standalone use and can only achieve coaxial signal transmission; it cannot simultaneously provide power conduction or differential signal transmission, making it inflexible and inconvenient to use.

[0005] In view of the above, the inventors propose the following technical solution. Utility Model Content:

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a board-end connector with coaxial and differential or power supply functions.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a board-end connector with coaxial and differential or power functions includes: an insulating base; a functional terminal for transmitting differential signals or power conduction, which is disposed in the insulating base, and the pin portion of the functional terminal is exposed on the lower end face of the insulating base; a coaxial connector body, which is fixedly installed on the insulating base and located next to the functional terminal, and the solder feet of the center conductor in the coaxial connector body are exposed on the lower end face of the insulating base.

[0008] Furthermore, in the above technical solution, the insulating base is provided with a mounting hole that passes through the upper and lower end faces, and the coaxial connector body is fixed in the mounting hole, with the upper part of the coaxial connector body exposed outside the upper end of the insulating base, and a first clearance notch for observing the welding status of the solder feet of the center conductor is provided inside the mounting hole, with the solder feet exposed in the first clearance notch.

[0009] Furthermore, in the above technical solution, the lower part of the coaxial connector body is formed with an outwardly protruding annular positioning part, and the upper end of the annular positioning part is provided with a guide slope, and the lower end of the annular positioning part is formed with a horizontally protruding flange; the annular positioning part is guided into the mounting hole through the guide slope at its upper end, and the annular positioning part and the mounting hole form an interference fit and are fastened, and the flange abuts against the outer periphery of the lower opening of the mounting hole.

[0010] Furthermore, in the above technical solution, the insulating base has a second clearance notch with a horizontally connected mounting hole along its side for observing the welding status of the weld leg of the central conductor, and the weld leg is exposed in the second clearance notch.

[0011] Furthermore, in the above technical solution, the functional terminal is fixedly assembled with the insulating base by insertion; or, the insulating base is integrally fixed to the functional terminal by injection molding; the number of functional terminals is two, which are arranged side by side on the insulating base, and the functional terminal is a metal four-pointed star formed by stamping, and the outer surface of the metal four-pointed star is formed with an electroplated layer by roller plating; the lower end of the insulating base is provided with multiple raised parts for contacting the PCB board.

[0012] Furthermore, in the above technical solution, the coaxial connector body includes an outer conductor, an inner insulator fixed inside the outer conductor, and a center conductor disposed in the inner insulator. The upper end of the outer conductor has a mating groove, and the conductive part at the upper end of the center conductor is exposed in the mating groove. The solder feet of the center conductor protrude beyond the lower end of the outer conductor and the lower end face of the inner insulator.

[0013] Furthermore, in the above technical solution, the outer conductor has a first limiting groove and a second limiting groove formed upward along its lower end surface, and both the first limiting groove and the second limiting groove penetrate the outer surface of the lower end of the outer conductor; the inner insulator has a first limiting block and a second limiting block formed on both sides of its lower end, and the first limiting block and the second limiting block are respectively embedded in the first limiting groove and the second limiting groove to achieve fastening.

[0014] Furthermore, in the above technical solution, the solder feet of the central conductor are also embedded in the groove at the lower end of the first limiting block, and the solder feet also protrude horizontally beyond the outer side of the first limiting block. The lower end surface of the central conductor is also provided with a solder trough.

[0015] Furthermore, in the above technical solution, the lower end face of the inner insulator is formed with large positioning posts and small positioning posts of different sizes that are spaced apart.

[0016] Furthermore, in the above technical solution, the outer conductor has multiple spaced-apart dividing grooves along its upper end face downwards, and an elastic guide arm is formed between two adjacent dividing grooves. The upper end of the elastic guide arm has an arc-shaped guide surface formed on its outer side, and the upper end of the elastic guide arm has an inclined guide surface formed on its inner side.

[0017] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The present invention integrates and fixes the functional terminals and the coaxial connector body on the insulating base, and the solder feet of the central conductor and the pins of the functional terminals in the coaxial connector body are exposed on the lower end face of the insulating base. The coaxial connector body is used to realize the transmission of camera signals (i.e., coaxial signals), while the functional terminals realize the transmission of power or differential signals (i.e., CAN signals), that is, to realize the power conduction function and differential signal transmission function. This solves the problem that the existing SMB board end connector can only realize the coaxial signal transmission function and does not have the power conduction function or differential signal transmission function, making the present invention flexible and convenient to use and enhancing its market competitiveness. Attached image description:

[0018] Figure 1 This is a perspective view of Embodiment 1 of this utility model;

[0019] Figure 2 This is a perspective view of another embodiment of the present utility model;

[0020] Figure 3 This is an exploded perspective view of Embodiment 1 of this utility model;

[0021] Figure 4 This is a cross-sectional view of the insulating base in Embodiment 1 of this utility model;

[0022] Figure 5 This is a perspective view of the insulating base in Embodiment 1 of this utility model;

[0023] Figure 6 This is a perspective view of the coaxial connector body in Embodiment 1 of this utility model;

[0024] Figure 7 This is a perspective view of the coaxial connector body from another angle in Embodiment 1 of this utility model;

[0025] Figure 8 This is a perspective view of Embodiment 2 of this utility model. Detailed implementation method:

[0026] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0027] Example 1:

[0028] See Figure 1-7 As shown, a board-end connector with coaxial and differential or power functions is presented, comprising an insulating base 1, functional terminals 2, and a coaxial connector body 3. This coaxial connector body 3 is widely used in new energy vehicles for intelligent assisted driving, pedestrian detection, and to meet ADAS functions such as APA automatic parking and blind spot monitoring.

[0029] The functional terminal 2 is disposed in the insulating base 1 and is used to transmit differential signals or power conduction, and the pin portion 22 of the functional terminal 2 is exposed on the lower end face of the insulating base 1; the coaxial connector body 3 is fixedly installed on the insulating base 1 and located next to the functional terminal 2, and the solder foot 331 of the center conductor 33 in the coaxial connector body 3 is exposed on the lower end face of the insulating base 1. In other words, this invention integrates and fixes the functional terminal 2 and the coaxial connector body 3 onto the insulating base 1. The solder feet 331 of the central conductor 33 within the coaxial connector body 3 and the pins 22 of the functional terminal 2 are both exposed on the lower surface of the insulating base 1. The coaxial connector body 3 is used to transmit camera signals (i.e., coaxial signals), while the functional terminal 2 transmits power or differential signals (i.e., CAN signals), thus achieving both power-on and differential signal transmission functions. This solves the problem in existing SMB board connectors that can only achieve coaxial signal transmission and lack power-on or differential signal transmission functions, making this invention flexible and convenient to use, and enhancing its market competitiveness. Furthermore, before the coaxial connector body 3 is fixedly installed on the insulating base 1, it is an independent component that can be used separately, enabling signal transmission for the camera and further enhancing its flexibility.

[0030] This invention boasts powerful functionality and high integration, featuring coaxial signal transmission, power-on capability, and differential signal transmission, thus simultaneously addressing all needs related to video, power supply, control, and data communication. Integrating coaxial signal transmission (for high-definition video and power supply) and differential CAN signal transmission (for reliable control and data communication), this invention is particularly suitable for use with new types of cameras. It represents a highly integrated, intelligent, and reliable solution for complex system applications, meeting the comprehensive requirements of modern intelligent systems for data bandwidth, communication reliability, and system simplicity.

[0031] The contact portion 21 of the functional terminal 2 is exposed outside the upper end face of the insulating base 1 and located on the side of the upper part of the coaxial connector body 3, so that when the coaxial connector body 3 is inserted with the wire end SMB connector, the power conductor on the wire end SMB connector directly contacts the contact portion 21 of the functional terminal 2 to achieve electrical conduction.

[0032] In this embodiment, the insulating base 1 and the coaxial connector body 3 are fixed together by assembly. Specifically, the insulating base 1 is provided with a mounting hole 11 that passes through the upper and lower end faces, and the coaxial connector body 3 is fixed in the mounting hole 11, with the upper part of the coaxial connector body 3 exposed outside the upper end of the insulating base 1. Of course, in some other embodiments, the insulating base 1 can also be integrally fixed to the coaxial connector body 3 by in-mold injection molding.

[0033] In this embodiment, the lower part of the coaxial connector body 3 is formed with an outwardly protruding annular positioning part 311, and the upper end of the annular positioning part 311 is provided with a guide slope 312, and the lower end of the annular positioning part 311 is formed with a horizontally protruding retaining flange 313. The annular positioning part 311 is guided into the mounting hole 11 by the guide slope 312 at its upper end. The guide slope 312 has a guiding function, so that the annular positioning part 311 is concentric with the mounting hole 11, so that insertion can be quickly achieved. The annular positioning part 311 and the mounting hole 11 form an interference fit and are fastened together. The retaining flange 313 abuts against the outer periphery of the lower opening of the mounting hole 11, thereby forming a stable installation between the coaxial connector body 3 and the insulating seat 1.

[0034] In this embodiment, a first clearance notch 111 is provided inside the mounting hole 11 for observing the welding status of the solder feet 331 of the center conductor 33. The solder feet 331 are exposed in the first clearance notch 111, so that the welding status of the solder feet 331 of the center conductor 33 can be directly and quickly observed through the first clearance notch 111 after the soldering of the solder feet 331 of the center conductor 33, achieving the purpose of checking the soldering effect. If there is a problem with the soldering, it can be directly reworked and re-soldered. In addition, the insulating base 1 has a second clearance notch 112 along its side, which is horizontally connected to the mounting hole 11 and is used to observe the welding status of the solder feet 331 of the center conductor 33. The solder feet 331 are exposed in the second clearance notch 112, so that the welding status of the solder feet 331 of the center conductor 33 can be directly and quickly observed through the second clearance notch 112 after the soldering of the solder feet 331 of the center conductor 33, achieving the purpose of checking the soldering effect. If there is a problem with the soldering, it can be directly reworked and re-soldered. In other words, this utility model allows for direct and rapid observation of the welding status of the solder feet 331 of the central conductor 33 from two different perspectives: vertical and horizontal, ensuring that the welding quality is up to standard.

[0035] The functional terminal 2 is fixedly assembled with the insulating base 1 by insertion; or the insulating base 1 is integrally fixed to the functional terminal 2 by injection molding.

[0036] Among them, such as Figure 1-3As shown, the pin portion 22 of the functional terminal 2 is a through-hole solder joint. There are two functional terminals 2, which are arranged side by side on the insulating base 1. The functional terminal 2 is a metal four-pronged pin formed by stamping, which can be electroplated by continuous barrel plating without plating deformation defects. The outer surface of the metal four-pronged pin has an electroplated layer formed by barrel plating, which can increase the conductivity. The lower end of the insulating base 1 is provided with multiple raised portions 12 for contact with the PCB board. The raised portions 12 contact with the PCB board to form a gap between the lower end surface of the insulating base 1 and the surface of the PCB board. This facilitates air flow between the pin portion 22 of the functional terminal 2 and the solder joint 331 of the center conductor 33 during reflow soldering, thereby improving the soldering quality.

[0037] The coaxial connector body 3 includes an outer conductor 31, an inner insulator 32 fixed inside the outer conductor 31, and a center conductor 33 disposed in the inner insulator 32. The upper end of the outer conductor 31 has a mating groove 310, and the conductive part 332 at the upper end of the center conductor 33 is exposed in the mating groove 310. The solder foot 331 of the center conductor 33 protrudes beyond the lower end of the outer conductor 31 and the lower end face of the inner insulator 32.

[0038] The outer conductor 31 has a first limiting groove 314 and a second limiting groove 315 formed on its lower end surface, and the first limiting groove 314 and the second limiting groove 315 both penetrate the lower end outer surface of the outer conductor 31; the inner insulator 32 has a first limiting block 321 and a second limiting block 322 formed on both sides of its lower end, and the first limiting block 321 and the second limiting block 322 are respectively embedded in the first limiting groove 314 and the second limiting groove 315 to achieve fastening, thereby ensuring that the inner insulator 32 and the outer conductor 31 form a stable assembly.

[0039] The solder feet 331 of the center conductor 33 are also embedded in the groove 323 at the lower end of the first limiting block 321. The groove 323 further limits the solder feet 331 of the center conductor 33, thereby achieving the purpose of guiding the solder feet 331 of the center conductor 33. The solder feet 331 also protrude horizontally beyond the outer side of the first limiting block 321 so as to be exposed in the first clearance notch 111. The lower end face of the center conductor 33 is also provided with a solder trough 333. The solder trough 333 is used to accommodate solder, thereby improving the quality of subsequent soldering.

[0040] The lower end face of the inner insulator 32 is formed with large positioning posts 324 and small positioning posts 325 of different sizes and spaced apart. By embedding and assembling the large positioning posts 324 and small positioning posts 325 with the large positioning holes and small positioning holes on the PCB board, not only is the positioning and fastening function achieved, but it can also play a foolproof role and prevent the inner insulator from shaking after being assembled with the PCB board, thus improving the assembly stability.

[0041] The outer conductor 31 has a plurality of spaced-apart dividing grooves 316 along its upper end face downward, and an elastic guide arm 317 is formed between two adjacent dividing grooves 316. The upper outer side of the elastic guide arm 317 is formed with an arc-shaped guide surface 318, and the upper inner side of the elastic guide arm 317 is formed with an inclined guide surface 319.

[0042] In summary, this invention integrates and fixes the functional terminal 2 and the coaxial connector body 3 onto the insulating base 1. The solder feet 331 of the central conductor 33 within the coaxial connector body 3 and the pins 22 of the functional terminal 2 are both exposed on the lower surface of the insulating base 1. The coaxial connector body 3 is used to transmit camera signals (i.e., coaxial signals), while the functional terminal 2 transmits power or differential signals (i.e., CAN signals), thus achieving both power conduction and differential signal transmission functions. This solves the problem in existing SMB board connectors that can only achieve coaxial signal transmission and lack power conduction or differential signal transmission functions, making this invention flexible and convenient to use, and enhancing its market competitiveness. Furthermore, before the coaxial connector body 3 is fixedly installed on the insulating base 1, it is an independent component that can be used separately, enabling signal transmission for the camera and further enhancing its flexibility.

[0043] Example 2:

[0044] like Figure 8 As shown, the difference between this second embodiment and the first embodiment is that the pin portion 22 of the functional terminal 2 is an SMT solder pad; apart from the differences mentioned above, the other structures of this second embodiment and the first embodiment are the same, and the same technical effect can be achieved.

[0045] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A board-end connector with coaxial and differential or power supply functions, characterized in that: It includes: Insulating base (1); A functional terminal (2) for transmitting differential signals or power on is disposed in an insulating base (1), and the pin portion (22) of the functional terminal (2) is exposed on the lower end face of the insulating base (1); The coaxial connector body (3) is fixedly mounted on the insulating base (1) and located next to the functional terminal (2), and the solder feet (331) of the center conductor (33) inside the coaxial connector body (3) are exposed on the lower end face of the insulating base (1).

2. A board-end connector with coaxial and differential or power functions according to claim 1, characterized in that: The insulating base (1) is provided with a mounting hole (11) that passes through the upper and lower end faces, and the coaxial connector body (3) is fixed in the mounting hole (11), and the upper part of the coaxial connector body (3) is exposed outside the upper end of the insulating base (1), and the inner side of the mounting hole (11) is provided with a first clearance notch (111) for observing the welding status of the solder foot (331) of the center conductor (33), and the solder foot (331) is exposed in the first clearance notch (111).

3. A board-end connector with coaxial and differential or power functions according to claim 2, characterized in that: The coaxial connector body (3) has an outwardly protruding annular positioning part (311) formed at the lower part, and a guide slope (312) is provided at the upper end of the annular positioning part (311), and a horizontally protruding retaining flange (313) is formed at the lower end of the annular positioning part (311). The annular positioning part (311) is guided into the mounting hole (11) through the guide slope (312) at its upper end, and an interference fit is formed between the annular positioning part (311) and the mounting hole (11) for fastening, and the retaining flange (313) abuts against the outer periphery of the lower opening of the mounting hole (11).

4. A board-end connector with coaxial and differential or power functions according to claim 2, characterized in that: The insulating base (1) has a horizontally communicating mounting hole (11) along its side and a second clearance notch (112) for observing the welding status of the weld foot (331) of the center conductor (33), which is exposed in the second clearance notch (112).

5. A board-end connector with coaxial and differential or power functions according to claim 1, characterized in that: The functional terminal (2) is fixedly assembled with the insulating base (1) by insertion; or the insulating base (1) is integrally fixed to the functional terminal (2) by injection molding; there are two functional terminals (2), which are arranged side by side on the insulating base (1), and the functional terminal (2) is a metal four-pointed star formed by stamping, and the outer surface of the metal four-pointed star is formed with an electroplating layer by roller plating; the lower end of the insulating base (1) is provided with a plurality of raised parts (12) for contacting the PCB board.

6. A board-end connector with coaxial and differential or power functions according to any one of claims 1-5, characterized in that: The coaxial connector body (3) includes an outer conductor (31), an inner insulator (32) fixed inside the outer conductor (31), and a center conductor (33) disposed in the inner insulator (32). The upper end of the outer conductor (31) has a mating groove (310), and the upper end of the center conductor (33) has a conductive part (332) exposed in the mating groove (310). The solder feet (331) of the center conductor (33) protrude beyond the lower end of the outer conductor (31) and the lower end face of the inner insulator (32).

7. A board-end connector with coaxial and differential or power functions according to claim 6, characterized in that: The outer conductor (31) has a first limiting groove (314) and a second limiting groove (315) formed on its lower end surface, and the first limiting groove (314) and the second limiting groove (315) both penetrate the lower end outer surface of the outer conductor (31); the inner insulator (32) has a first limiting block (321) and a second limiting block (322) formed on both sides of its lower end, and the first limiting block (321) and the second limiting block (322) are respectively embedded in the first limiting groove (314) and the second limiting groove (315) to achieve fastening.

8. A board-end connector with coaxial and differential or power functions according to claim 7, characterized in that: The solder feet (331) of the center conductor (33) are also embedded in the groove (323) at the lower end of the first limiting block (321), and the solder feet (331) also protrude horizontally beyond the outer side of the first limiting block (321). The lower end face of the center conductor (33) is also provided with a solder trough (333).

9. A board-end connector with coaxial and differential or power functions according to claim 6, characterized in that: The lower end face of the inner insulator (32) is formed with large positioning posts (324) and small positioning posts (325) of different sizes and spaced apart.

10. A board-end connector with coaxial and differential or power functions according to claim 6, characterized in that: The outer conductor (31) has a plurality of spaced-apart dividing grooves (316) along its upper end face downward, and an elastic guide arm (317) is formed between two adjacent dividing grooves (316). The upper end of the elastic guide arm (317) is formed with an arc-shaped guide surface (318), and the upper end of the elastic guide arm (317) is formed with an inclined guide surface (319).

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