A vehicle-mounted multi-channel board end connector

Abstract

The application discloses a vehicle-mounted multi-channel board end connector, which comprises a plastic shell, a metal cover, a plurality of center pins, a plurality of insulators respectively sleeved outside the center pins, and a plurality of shielding members respectively sleeved outside the insulators. The plastic shell and the metal cover are matched and limited by at least one limiting structure, and the plastic shell and the metal cover are designed to be matched and stepped. The metal cover is connected with the shielding members in an interference mode, and the two form a full shielding member body. The plastic shell is not subjected to riveting, pressing and dotting of a large stress assembly mode, thereby avoiding that the plastic shell bears main assembly stress, effectively reducing problems such as falling and stress cracking of the plastic shell, reducing the requirement for high strength and high toughness of a processing material of the plastic shell, and further reducing raw material cost. The technical problem of easy cracking and loosening of a traditional scheme is fundamentally solved. In addition, the shielding member structure of the connector is simple, cost-saving and easy to assemble, and the vehicle-mounted multi-channel board end connector provides an excellent technical scheme for improving quality and reducing cost.

Description

Technical Field

[0001] This utility model relates to the field of electrical connector technology, specifically to a vehicle-mounted multi-channel board-end connector. Background Technology

[0002] With the rapid development of the automotive industry, the demand for vehicle electronics and intelligence is growing daily, and advanced functions such as GPS navigation, in-vehicle infotainment, smartphone connectivity, and autonomous driving are gradually becoming widespread. Against this backdrop, the performance and reliability of connectors, as key components in automotive electrical circuits, are particularly important. Multi-channel coaxial connectors, with their excellent electromagnetic shielding performance, have become the mainstream choice in the field of high-frequency signal transmission in automobiles.

[0003] In existing technologies, especially in the assembly and fixing structures of multi-channel coaxial connectors, there are mainly two typical solutions, both of which have obvious limitations:

[0004] Elastic snap-fit ​​fixing: This solution typically involves designing an elastic snap-fit ​​structure on the connector's plastic shell and a corresponding boss on the metal body, achieving fixation through the snap-fit ​​between the two. However, this structure places extremely high demands on the toughness and fatigue resistance of the plastic material, thus increasing the production cost of the plastic shell and making the structure itself more complex. In practical applications, the elastic structure is prone to failure and cracking due to stress concentration or repeated insertion and removal.

[0005] Riveting and fixing type: This method involves pre-setting riveting points on a metal body such as zinc alloy, and then riveting the plastic shell after assembly to achieve mechanical locking. The riveting process itself is a severe plastic deformation process, which can easily generate irreversible residual stress within the plastic component. This stress may cause the plastic shell to crack brittlely at the time of assembly, or develop delayed cracks. Utility Model Content

[0006] This utility model provides a vehicle-mounted multi-channel board-end connector, overcoming the problems in the prior art mentioned above. The technical solution adopted by this utility model is as follows:

[0007] A vehicle-mounted multi-channel board-end connector, mounted on a circuit board for signal transmission, includes a plastic shell, a metal cover, multiple center pins, multiple insulators respectively sleeved on the outside of the center pins, and multiple shielding components respectively sleeved on the outside of the insulators;

[0008] The rear end of the plastic shell is stepped, having a first stepped portion and a second stepped portion; the first stepped portion has a first cavity, and the second stepped portion has a second cavity.

[0009] Each of the shielding components has a fixing part on its upper part and a cylindrical part on its lower part;

[0010] The metal cover is shaped like a stepped structure that matches the rear end of the plastic shell, and the plastic shell and the metal cover are mutually restrained by at least one set of limiting structures.

[0011] When the metal cover is assembled to the plastic shell, the metal cover interferes with the fixing part above each of the shielding components, and thus the metal cover and each of the shielding components together form a fully shielded shell, realizing independent shielding of each channel.

[0012] In some embodiments, the fixing part is provided with barbs, and the inner wall of the metal cover is connected to the barbs.

[0013] In some embodiments, the upper end of the fixing portion of each shielding member extends toward the insulator and bends, embedding itself into a preset slot in the insulator and fixing it in place.

[0014] In some embodiments, the shielding member includes a short shielding member disposed in the first cavity and a long shielding member disposed in the second cavity;

[0015] The upper end of the cylindrical portion of the short shielding member is provided with an extended shielding platform. After each shielding member is installed with the plastic shell, the shielding platform of the short shielding member abuts against the upper end face of the first stepped portion.

[0016] In some embodiments, the first protrusions are provided on the left and right sides of the first step portion of the plastic shell, and the corresponding position of the metal cover is provided with a first groove, and the first protrusions and the first groove engage to form a first set of limiting structures.

[0017] In some embodiments, a second protrusion is provided on the first stepped portion located between the first protrusions on both sides, and a second groove is provided at the corresponding position of the metal cover. The second protrusion and the second groove engage to form a second set of limiting structures.

[0018] In some embodiments, the upper part of the second step portion of the plastic shell extends upward with a clamp portion, which wraps around the cylindrical portion of the long shielding member and is used to fix the long shielding member.

[0019] In some embodiments, a third groove is provided below the clamp portion, and a third protrusion is provided at the corresponding position of the metal cover. The third protrusion is engaged with the third groove to form a third set of limiting structures.

[0020] In some embodiments, a fixing seam is provided between the fixing part of the short shield and the shielding platform, and a fourth protrusion is provided on both sides of the inside of the metal cover at the corresponding positions of the fixing seam, and the fourth protrusion is engaged and fixed with the fixing seam.

[0021] In some embodiments, the metal cover is further provided with welding feet, which are integrally die-cast with the metal cover.

[0022] Compared with existing technologies, the advantages of this utility model for a vehicle-mounted multi-channel board-end connector are as follows: the assembly method without rivets or pressure points on the plastic shell avoids the plastic shell bearing the main assembly stress, fundamentally solving the technical problems of easy cracking and loosening of the plastic shell in traditional solutions; at the same time, it also improves the compatibility of the plastic shell with the strength and toughness of raw materials, thereby reducing the raw material cost of the plastic shell; in addition, the shielding structure of this connector is simple, cost-effective, and easy to assemble, providing an excellent technical solution for improving quality and reducing costs for vehicle-mounted multi-channel board-end connectors. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of a vehicle-mounted multi-channel board-end connector provided in this application;

[0025] Figure 2 This is an exploded view of a vehicle-mounted multi-channel board-end connector provided in this application;

[0026] Figure 3 This is a schematic diagram of the overall structure of the plastic shell provided in this application;

[0027] Figure 4 This is a schematic diagram of the overall structure of the one-piece metal cover provided in this application;

[0028] Figure 5 This is a schematic diagram of the overall structure of the short shielding component provided in this application;

[0029] Figure 6 This is a schematic diagram of the overall structure of the long shielding component provided in this application;

[0030] Figure 7 This is a cross-sectional view of the first set of limiting structures and snap-fit ​​fixing points provided in this application;

[0031] Figure 8 This is a cross-sectional view of the second set of limiting structures provided in this application;

[0032] Figure 9 This is a cross-sectional view of the third set of limiting structures provided in this application.

[0033] The components represented by each number in the attached diagram are explained below:

[0034] 10 – Plastic outer shell, 11 – First step, 111 – First cavity, 12 – Second step, 121 – Second cavity, 13 – First boss, 14 – Second boss, 15 – Third groove, 16 – Clamp.

[0035] 20 – Shielding component, 21 – Fixing part, 22 – Cylindrical part, 23 – Short shielding component, 24 – Long shielding component, 25 – Shielding platform, 26 – Fixing seam, 27 – Barb;

[0036] 30 – Metal cap, 31 – First groove, 32 – Second groove, 33 – Third boss, 34 – Fourth boss, 35 – Weld foot;

[0037] 40 – Insulator, 50 – Center pin.

[0038] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0040] refer to Figure 1 and Figure 2 A vehicle-mounted multi-channel board-end connector includes a plastic housing 10, a metal cover 30, multiple center pins 50, multiple insulators 40 respectively sleeved on the outside of the center pins 50, and multiple shielding components 20 respectively sleeved on the outside of the insulators 40. That is, the number of center pins 50, insulators 40, and shielding components 20 are equal, and they are sleeved one by one as described above.

[0041] The rear end of the plastic shell 10 is stepped, having a first stepped portion 11 and a second stepped portion 12; the first stepped portion 11 is provided with a first cavity 111, and the second stepped portion 12 is provided with a second cavity 121.

[0042] Each shielding component 20 has a fixing part 21 above it and a cylindrical part 22 below it.

[0043] The metal cover 30 is integrally formed and its shape is set to match the rear end of the plastic shell 10 in a stepped shape. The plastic shell 10 and the metal cover 30 are matched by at least one limiting structure to form a limiting; specifically, the rear end of the plastic shell 10 is provided with multiple protrusions, and the metal cover 30 is provided with grooves that match the protrusions. The two cooperate with each other to restrict the relative displacement and rotation of the metal cover 30 and the plastic shell 10 in the horizontal direction.

[0044] When the metal cover 30 is assembled to the plastic housing 10, the metal cover 30 is connected to the fixing part 21 above each shielding component 20 to restrict the displacement of the metal cover 30 in all directions. Thus, the metal cover 30 and each shielding component 20 together form a fully shielded housing to achieve independent shielding of each channel.

[0045] By designing the metal cover 30 as an integral structure and matching it in a stepped manner with the plastic housing 10, and by interfering with the metal cover 30 and each shielding component 20, a complete shielding cavity is constructed, providing a multi-channel connector with excellent full shielding performance.

[0046] Furthermore, the above-mentioned solution, through a high-stress assembly method such as rivet-free pressing and point-punching on the plastic shell 10, completely avoids problems such as detachment and stress cracking of the plastic shell 10. It fundamentally changes the traditional fixing method that relies on plastic elastic buckles or riveting, avoids the plastic shell 10 bearing the main assembly stress, and makes the range of materials that can be selected for the plastic shell 10 wider. Therefore, the connector in this embodiment has high compatibility with the material strength and toughness of the plastic shell 10, reducing the raw material cost of the plastic shell 10; it also further solves the fundamental technical problems of easy cracking and loosening in traditional solutions.

[0047] Furthermore, the structure of the shield 20 and metal cover 30 of the traditional connector is simplified without affecting the shielding effect, making the shield 20 of the connector simple and easy to assemble; the cost of this integrated metal cover 30 plus multiple shield 20 solutions is 2 / 3 of the cost of traditional solutions, providing an excellent technical solution for improving quality and reducing costs for automotive multi-channel board-end connectors.

[0048] In this embodiment, the fixing part 21 is provided with barbs 27, and the inner wall of the metal cover 30 is connected to the barbs 27 by interference.

[0049] A reliable metal-to-metal interference fixing method is adopted. The interference connection can effectively limit the displacement of the metal cover 30 in all directions, and the stress is directly applied between the metal parts, which improves the reliability of the assembly.

[0050] In this embodiment, the upper end of the fixing part 21 of each shield 20 extends and bends towards the insulator 40, embeds itself into the pre-set slot of the insulator 40, and is fixed. This achieves pre-fixation and integration of the shield 20 with the insulator 40 and the center pin 50, improves the structural integrity and stability of the internal components, facilitates subsequent assembly with the plastic shell 10 and the metal cover 30, and prevents metal debris from being generated when the metal cover 30 is installed.

[0051] In this embodiment, the shielding member 20 includes a short shielding member 23 disposed in the first cavity 111 and a long shielding member 24 disposed in the second cavity 121. The upper end of the cylindrical portion 22 of the short shielding member 23 is provided with an extended shielding platform 25. After the shielding member 20 is installed with the plastic shell 10, the shielding platform 25 of the short shielding member 23 abuts against the upper end face of the first stepped portion 11. The setting of the shielding platform 25 ensures that the installation depth of the short shielding member 23 in the plastic shell 10 is accurate and consistent, while enhancing the continuity of shielding. Similarly, the long shielding member 24 is also provided with a corresponding locking platform, so that the installation depth of each long shielding member 24 is accurate and consistent.

[0052] In this embodiment, the first stepped portion 11 of the plastic shell 10 has first protrusions 13 on both the left and right sides, and the corresponding position of the metal cover 30 has a first groove 31. The first protrusions 13 and the first groove 31 engage to form a first set of limiting structures. Therefore, the first set of limiting structures provides precise horizontal positioning, effectively preventing the metal cover 30 from lateral displacement relative to the plastic shell 10, and ensuring accurate assembly alignment.

[0053] In this embodiment, a second protrusion 14 is also provided on the first stepped portion 11 located between the first protrusions 13 on both sides, and a second groove 32 is provided at the corresponding position of the metal cover 30. The second protrusion 14 and the second groove 32 engage to form a second set of limiting structures. The second set of limiting structures works together with the first set of limiting structures on both sides to further enhance the connection stability of the metal cover 30 and effectively prevent the metal cover 30 from rotating or swaying, making the connector structure more stable.

[0054] In this embodiment, a clamping part 16 extends upward from the upper part of the second step portion 12 of the plastic shell 10. The clamping part 16 is used to fix the long shielding member 24. Furthermore, the clamping part 16 is a structure of two connected arches, which can effectively prevent the long shielding member 24 from shaking or tilting in the cavity, and provide pre-fixation before the metal cover 30 is assembled, making the assembly process smoother.

[0055] In this embodiment, a third groove 15 is provided below the clamp portion 16, and a third protrusion 33 is provided at the corresponding position of the metal cover 30. The third protrusion 33 engages with the third groove 15 to form a third set of limiting structures. Vertical positioning and limiting are added to the upper region of the connector, making the fixation of the metal cover 30 more balanced and reliable.

[0056] In this embodiment, a fixing slot 26 is provided between the fixing part 21 of the short shield 23 and the shielding platform 25. A fourth protrusion 34 is provided on both sides of the interior of the metal cover 30 corresponding to the fixing slot 26. The fixing slot 26 and the fourth protrusion 34 form a snap-fit ​​fixation, providing an auxiliary locking mechanism for the area of ​​the short shield 23. This snap-fit ​​fixation structure, together with the aforementioned barb 27 interference connection, provides the connector with a strong and high-strength retaining force, ensuring a reliable connection between the connector metal cover 30 and the shield 20.

[0057] In this embodiment, the metal cover 30 is also provided with solder feet 35, and the solder feet 35 and the metal cover 30 are integrally die-cast. Traditionally, the solder feet 35 and the metal cover 30 are separate components, requiring a strong interference connection. If metal debris generated by this interference falls between the solder feet 35 and the circuit board, it can easily cause a short circuit. This embodiment, with its integral molding, avoids interference between the metal cover 30 and the solder feet 35, eliminating the risk of short circuits caused by interference. It also avoids the risk of loosening or poor contact caused by the assembly of the solder feet 35, improving the strength, reliability, and connection stability of the solder feet 35.

[0058] The above embodiments are preferred embodiments of this utility model, but not all embodiments. Any equivalent changes to the technical solutions of this utility model made by those skilled in the art after reading this utility model specification are covered by this utility model application.

Claims

1. A vehicle-mounted multi-channel board-end connector, mounted on a circuit board for signal transmission, characterized in that, It includes a plastic shell (10), a metal cover (30), a plurality of center pins (50), a plurality of insulators (40) respectively fitted outside the center pins (50), and a plurality of shielding elements (20) respectively fitted outside the insulators (40). The rear end of the plastic shell (10) is stepped, having a first stepped portion (11) and a second stepped portion (12); the first stepped portion (11) is provided with a first cavity (111), and the second stepped portion (12) is provided with a second cavity (121). Each of the shielding components (20) has a fixing part (21) above it and a cylindrical part (22) below it. The metal cover (30) is shaped as a stepped structure that matches the rear end of the plastic shell (10). The plastic shell (10) and the metal cover (30) are mutually restrained by at least one set of limiting structures. When the metal cover (30) is assembled to the plastic shell (10), the metal cover (30) interferes with the fixing part (21) above each of the shielding parts (20), and then the metal cover (30) and each of the shielding parts (20) together form a fully shielded shell to achieve independent shielding of each channel.

2. The vehicle-mounted multi-channel board-end connector according to claim 1, characterized in that, The fixing part (21) is provided with barbs (27), and the inner wall of the metal cover (30) is connected to the barbs (27) through interference.

3. The vehicle-mounted multi-channel board-end connector according to claim 1, characterized in that, The upper end of the fixing part (21) of each shielding member (20) extends toward the insulator (40) and bends, and is embedded in the preset slot of the insulator (40) and fixed.

4. The vehicle-mounted multi-channel board-end connector according to claim 1, characterized in that, The shielding element (20) includes a short shielding element (23) disposed in the first cavity (111) and a long shielding element (24) disposed in the second cavity (121). The upper end of the cylindrical part (22) of the short shield (23) is provided with an extended shielding platform (25). After each shield (20) is installed with the plastic shell (10), the shielding platform (25) of the short shield (23) abuts against the upper end face of the first stepped part (11).

5. The vehicle-mounted multi-channel board-end connector according to claim 1, characterized in that, The plastic shell (10) has a first boss (13) on the left and right sides of the first step (11), and the metal cover (30) has a first groove (31) at the corresponding position. The first boss (13) and the first groove (31) engage to form a first set of limiting structures.

6. The vehicle-mounted multi-channel board-end connector according to claim 5, characterized in that, A second protrusion (14) is provided on the first step portion (11) located between the first protrusions (13) on both sides, and a second groove (32) is provided at the corresponding position of the metal cover (30). The second protrusion (14) and the second groove (32) engage to form a second set of limiting structures.

7. The vehicle-mounted multi-channel board-end connector according to claim 4, characterized in that, The second step (12) of the plastic shell (10) extends upward to a clamp (16), which is wrapped around the cylindrical part (22) of the long shield (24) to fix the long shield (24).

8. The vehicle-mounted multi-channel board-end connector according to claim 7, characterized in that, The clamp part (16) is provided with a third groove (15) below it, and the metal cover (30) is provided with a third boss (33) at the corresponding position. The third boss (33) is inserted into the third groove (15) to form a third set of limiting structures.

9. The vehicle-mounted multi-channel board-end connector according to claim 4, characterized in that, A fixing seam (26) is provided between the fixing part (21) of the short shield (23) and the shielding platform (25). A fourth protrusion (34) is provided on both sides of the inside of the metal cover (30) at the corresponding position of the fixing seam (26). The fourth protrusion (34) is engaged and fixed with the fixing seam (26).

10. The vehicle-mounted multi-channel board-end connector according to any one of claims 1-9, characterized in that, The metal cover (30) is also provided with welding feet (35), which are integrally die-cast with the metal cover (30).

Images