Integrated high reliability connector

Abstract

The utility model relates to an integrated high-reliability connector, which includes a metal shell, an insulator and an inner conductor. The metal shell, the insulator and the inner conductor are coaxially arranged, and there is an insert structure between the metal shell and the insulator. The insulator and the metal shell are also matched by a concave-convex structure to achieve axial forward anti-slip, and a stop surface is also provided in the metal shell to stop and limit the end face of the insulator tail. The coaxial insert integrated structure of the metal shell and the insulator of the utility model not only reduces the number of shell parts; it also increases the fixing effect and avoids the movement of the insulator in the shell after assembly.

Description

Technical Field

[0001] The utility model belongs to the technical field of connectors, and in particular relates to an integrated high-reliability connector. Background Art

[0002] Data transmission in communication and vehicle-mounted devices requires the use of connectors to lead out internal signals of the device and reliably connect it to other devices. For example, in vehicle-mounted camera applications, the connector may be in a strong bumpy and vibrating environment, and the vehicle may be immersed in water, sprayed with water, splashed with water, and hit by flying stones and dust during driving. Therefore, a highly reliable connector is required.

[0003] Existing vehicle camera connectors generally have two structures: 1) To ensure costs, the insulator is directly pressed into the shell, relying on the overall interference fit between the insulator and the shell. After severe vibration or high and low temperatures, the insulator of this connector will shrink slightly due to the material characteristics, resulting in a reduction in interference or a gap fit, resulting in insufficient holding force and then falling out. 2) To ensure reliability, the shell is divided into two parts for press-fitting, and the insulator is clamped in the middle to fix it. Due to the low shrinkage rate of metal, the fixation of this connector still meets the requirements after severe vibration or high and low temperatures. However, this structure increases the assembly process, and a too short interference length will cause the coaxiality to be too large. At the same time, there is a risk of the insulator clamped in the middle moving, which accelerates the wear of the inner conductor under vibration and shortens its life. Summary of the invention

[0004] To solve the above problems, the utility model provides an integrated high-reliability connector, which not only reduces the number of shell parts, but also increases the fixing effect, avoiding the movement of the insulator in the shell after assembly, through the integrated structure of the metal shell and the coaxial insert of the insulator.

[0005] The purpose of the utility model and the technical problem to be solved are achieved by adopting the following technical solutions. According to an integrated high-reliability connector proposed by the utility model, it includes a metal shell, an insulator 2 and an inner conductor 3, wherein the metal shell 1, the insulator 2 and the inner conductor 3 are coaxially arranged, and there is an insert structure between the metal shell 1 and the insulator 2, and the insulator 2 and the metal shell 1 are also axially anti-slipped by the concave-convex structure, and the metal shell 1 is also provided with a stop surface 11 for stopping and limiting the rear end face of the insulator 2.

[0006] The purpose of the utility model and the solution to its technical problems can also be further achieved by adopting the following technical measures.

[0007] The aforementioned integrated high-reliability connector is characterized in that: a boss barb structure (21) is provided on the outer periphery of the insulator (2), and a ring groove (12) adapted to the boss barb structure is provided in the metal shell (1).

[0008] In the aforementioned integrated high-reliability connector, the front end surface of the boss barb structure 21 is a vertical stop surface perpendicular to the axial direction of the insulator 2, and the rear end surface is an inclined surface gradually inclined downward from front to back.

[0009] In the aforementioned integrated high-reliability connector, the metal shell 1 is provided with a front end plug-in terminal 13, an intermediate retaining terminal 14 and a tail terminal 15 in sequence along its axial direction from front to back, and the inner diameter of the front end plug-in terminal 13 is greater than the inner diameter of the intermediate retaining terminal 14 and the inner diameter of the cavity of the tail terminal 15; the insulator 2 is molded in the intermediate retaining terminal 14.

[0010] In the aforementioned integrated high-reliability connector, the stop surface 11 is a stepped surface between the middle holding end 14 and the tail terminal 15 .

[0011] In the aforementioned integrated high-reliability connector, the annular groove 12 is located in the middle holding end 14 near the front end plug-in end 13 .

[0012] In the aforementioned integrated high-reliability connector, the inner conductor 3 is interference-fitted with the small hole section at the front end of the insulator 2 through its peripheral barbs 31, and is stopped and limited by the stepped surface formed between its peripheral convex key and the transition hole section in the middle of the insulator 2 and the small hole section at the front end; the large diameter section at the rear end of the insulator 2 is for the wire pressing portion at the rear end of the inner conductor 3 to enter.

[0013] The aforementioned integrated high-reliability connector has a crimping sleeve 5 on the outer periphery of the tail terminal 15 for pressing the shielding layer of the cable 7 onto the tail terminal 15 , and the tail of the metal shell 1 , the crimping sleeve 5 and the front end of the cable 7 are all located in the plastic package 6 .

[0014] The aforementioned integrated high-reliability connector, the outer periphery of the metal shell 1 is also provided with a flange 8 for connecting and fixing with the equipment installation panel, and the sealing ring groove 81 on the flange 8 is provided with a sealing ring for sealing the flange 8 and the equipment panel.

[0015] In the aforementioned integrated high-reliability connector, the inner diameter of the sealing ring 9 is smaller than the inner diameter of the sealing ring groove 81, so that the sealing ring 9 is in a pre-stretched state.

[0016] In the aforementioned integrated high-reliability connector, the outer diameter of the sealing ring 9 is smaller than the outer diameter of the sealing ring groove 81 , and a plurality of convex bumps 82 are distributed circumferentially on the outer wall of the sealing ring groove 81 , and the diameter of the inscribed circle of the circumference of the convex bumps 82 is smaller than the outer diameter of the sealing ring 9 .

[0017] In the aforementioned integrated high-reliability connector, the sealing ring 9 is an H-shaped rubber ring.

[0018] Compared with the prior art, the utility model has obvious advantages and beneficial effects. By means of the above technical solution, the utility model can achieve considerable technical progress and practicality, and has wide industrial utilization value, and has at least the following advantages:

[0019] The insulator insert of the utility model is injected into the middle holding end of the metal shell to form a component, and the outer diameter of the insulator completely fits the middle holding end of the metal shell, thereby reducing the number of shell parts, increasing the fixing effect, and avoiding the insulator from moving in the shell after assembly.

[0020] The utility model further ensures the anti-dropping of the insulator and the metal shell through the fitting of the insulator boss barb with the metal shell ring groove and the setting of the inner stop surface of the metal shell, thereby ensuring the stability of the connector in a vibration environment.

[0021] The utility model also ensures the reliability of sealing in a vibration environment and when the temperature changes by pre-stretching the inner diameter of the sealing ring and extruding and matching the outer diameter with the convex hull. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional view of the integrated high-reliability connector of the utility model;

[0023] Figure 2 This is an exploded view of the integrated high-reliability connector of the utility model;

[0024] Figure 3 This is a schematic diagram of the insulator structure of the integrated high-reliability connector of the utility model;

[0025] Figure 4 for Figure 3 The main view;

[0026] Figure 5 for Figure 3 A cross-sectional view of

[0027] Figure 6 It is a schematic diagram of the metal shell structure;

[0028] Figure 7 for Figure 6 The main view;

[0029] Figure 8 for Figure 6 A cross-sectional view of

[0030] Fig. 9 for Figure 8 A magnified view of part B;

[0031] Fig.10 for Figure 6 Side view of

[0032] Fig.11Schematic diagram of the sealing ring structure;

[0033] Fig.12 It is a cross-sectional view of the sealing ring;

[0034] Fig.13 It is a schematic diagram of the cooperation between the metal shell and the sealing ring;

[0035] Fig.14 for Fig.13 Side view of.

[0036]

Main component symbol description

[0037] 1: Metal shell

[0038] 11: Stop surface

[0039] 12: Ring groove

[0040] 13: Front end to plug end

[0041] 14: Middle holding end

[0042] 15: Tail terminal

[0043] 2: Insulator

[0044] 21: Boss barb structure

[0045] 3: Inner conductor

[0046] 31: Barb

[0047] 4: Sealing ring

[0048] 5: Wire sleeve

[0049] 6: Plastic sealing body

[0050] 7: Cables

[0051] 8: Flange

[0052] 81: Sealing ring groove

[0053] 82: Convex Hull

[0054] 9: Sealing ring groove DETAILED DESCRIPTION

[0055] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation method, structure, characteristics and effects of the integrated high-reliability connector proposed according to the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0056] See also Figure 1-14, which is a schematic diagram of the structure of each part of the integrated high-reliability connector of the utility model, the connector includes a metal shell 1, an insulator 2 and an inner conductor 3, wherein the metal shell 1 and the insulator 2 are coaxially arranged, and an insert structure is between the insulator 2 and the metal shell 1, specifically, the insulator 2 insert is injected into the metal shell 1.

[0057] In this embodiment, the inner conductor 3 is installed in the internal mounting hole of the insulator 2 and is coaxial with the metal shell 1, but the present invention is not limited thereto. Preferably, the inner conductor 3 includes at least two backward-inclined barbs 31 arranged on its periphery to penetrate into the insulator 2 to achieve interference fit with the insulator 2.

[0058] In this embodiment, the metal shell 1 is provided with a stop surface 11 capable of stopping and limiting the tail of the insulator 2. The insulator 2 also achieves axial forward stop and limit by means of a boss barb structure 21 on the outer periphery of the front end thereof and a concave-convex fit with the annular groove 12 in the metal shell 1, thereby preventing the metal shell 1 and the insulator 2 from being separated from each other. The boss barb structure 21 is formed by the outer periphery of the insulator 2 protruding outward, and its outer diameter is larger than the diameter of the insulator 2. Preferably, the front end surface of the boss barb structure 21 is a vertical stop surface perpendicular to the axial direction of the insulator 2, and the rear end surface is an inclined surface gradually downward from front to back. The annular groove 12 is adapted to the boss barb structure 21.

[0059] In another embodiment of the utility model, the front end face and the rear end face of the boss barb structure 21 are both vertical stop surfaces perpendicular to the axial direction of the insulator 2, and the corresponding front and rear walls of the annular groove 12 are also vertical surfaces perpendicular to the axial direction of the metal shell 1. Therefore, the axial reliable limitation between the metal shell and the insulator 2 can be achieved through the cooperation between the boss barb structure 21 and the annular groove 12, and the setting of the stop surface 11 in the metal shell 1 can be cancelled at this time.

[0060] In other embodiments of the utility model, the insulator 2 and the metal shell 1 can also achieve axial anti-slipping limit by cooperating with other forms of concave-convex structures to ensure the reliability of the connection between the two. For example, the insulator 2 can achieve anti-slipping by cooperating with the boss structure distributed at intervals on its periphery and the groove structure distributed at intervals in the metal shell. The insulator 2 can also achieve anti-slipping cooperation of the concave-convex structure by cooperating with the groove on its periphery and the protrusion in the metal shell.

[0061] In this embodiment, the metal shell 1 includes a front end plug-in end 13, a middle holding end 14 and a tail terminal 15 in order from front to back along its axial direction, wherein the inner diameter d1 of the front end plug-in end 13> the inner diameter d2 of the middle holding end 14> the inner diameter d4 of the tail terminal 15. The insulator 2 is injection molded in the middle holding end 14 of the metal shell 1, and a forward stop surface 11 is formed between its tail and the middle holding end 14 and the tail terminal 15 to prevent the insulator 2 from falling out axially backward in the metal shell 1.

[0062] The annular groove 12 is located in the middle holding end 14 near the front end plug-in end 13, and cooperates with the boss barb structure 21 on the insulator 2 to realize the axial forward anti-slip limit of the insulator 2. Since the insulator 2 of the utility model is integrally injected with the metal shell 1 insert, the insulator 2 insert is injected in the middle holding end 14, and forms a component with the middle holding end 14, the outer diameter of the insulator completely fits the inner wall of the middle holding end 14, and the boss barb structure 21 of the insulator 2 completely fits the annular groove 12. As a result, the outer diameter D2 of the boss barb structure 21 is equal to the diameter d3 of the annular groove 12 in the metal shell 1 and is larger than the inner diameter d2 of the middle holding end 14 of the metal shell 1, and the inner diameter d2 of the middle holding end 14 is equal to the insulator diameter D1, thereby ensuring that the insulator is reliably fixed to the metal shell and does not fall off, thereby improving product reliability.

[0063] The inner conductor 3 includes a contact portion, a main body and a wire pressing portion from front to back, wherein the contact portion of the front end of the inner conductor 3 protrudes from the insulator 2 and is located in the front end plug-in terminal 13, so as to contact and conduct with the adapter connector. The front end of the cable 7 passes through the tail terminal 15 and is connected to the wire pressing portion of the tail of the inner conductor 3. Preferably, the insulator 2 has a three-level stepped hole structure that increases step by step from front to back, wherein the small hole section at the front end is used to cooperate and fix with the main body of the inner conductor 3, and the outer periphery of the main body is provided with barbs 31, which are interference-fitted with the small hole section at the front end through the barbs 31. The large diameter section at the tail of the insulator 2 is adapted to the wire pressing portion of the inner conductor 3, and can be used for the wire pressing portion 3 to enter. The transition section in the middle of the insulator 2 is adapted to the convex key formed by the protrusion on one side of the tail of the main body of the inner conductor 3, and the convex key can be stopped and limited with the stepped surface formed between the transition section and the small hole section, limiting the length of the inner conductor 3 inserted forward, and preventing the front end of the main body of the inner conductor 3 from protruding from the insulator during assembly.

[0064] A crimping sleeve 5 is also pressed tightly against the outer periphery of the tail wiring terminal 15 , and the crimping sleeve 5 presses the shielding layer of the cable 7 against the tail wiring terminal 15 .

[0065] The connector further includes a plastic encapsulation body 6, which covers the outer periphery of the rear end of the metal shell 1, the crimping sleeve 5 and part of the cable 7 to achieve sealing and protection of the rear end of the connector. In this embodiment, the outer diameter of the middle holding end 14 of the metal shell 1 is greater than the outer diameter of the rear terminal 15, and the front end of the plastic encapsulation body 6 is connected to the outer periphery of the rear end of the middle holding end 14. Preferably, the outer periphery of the middle holding end 14 is also provided with a plurality of annular grooves for enhancing the connection force with the plastic encapsulation body 6.

[0066] The outer periphery of the metal shell 1 is also provided with a flange 8 for connecting and fixing with the equipment installation panel. A sealing ring groove 81 is provided on the front end surface of the flange 8, and a sealing ring 9 is installed in the sealing ring groove 81. The metal shell 1 is sealed with the equipment installation panel through the sealing ring 9 on its flange 8, and the inner diameter a1 of the sealing ring 9 is smaller than the inner diameter b1 of the sealing ring groove 81, so that the inner side of the sealing ring 9 is stretched, ensuring that a certain pre-stretching force is maintained between the sealing ring 9 and the sealing ring groove 81 to meet the sealing and stability requirements.

[0067] In this embodiment, the outer wall of the sealing ring groove 81 protrudes toward the inner wall with a plurality of convex bumps 82, and the inscribed circle diameter b2 of the convex bumps 82 is less than the outer diameter b3 of the metal shell and is larger than the outer diameter a2 of the sealing ring 9, so that the outer diameter of the sealing ring 9 is compressed, ensuring that the sealing ring 9 is stably and reliably installed and preventing it from falling off. In this embodiment, the convex bumps 82 are evenly distributed along the circumferential direction on the inner wall of the sealing ring groove 81, and the sizes of the convex bumps 82 are consistent.

[0068] The sealing ring 9 is an H-shaped rubber ring, and the thickness L2 of the sealing ring 9 is greater than the depth of the sealing ring groove 81, so that the sealing ring 9 partially extends out of the sealing ring groove 81 and contacts and seals with the equipment installation panel.

[0069] When the sealing ring 9 of the utility model cooperates with the sealing ring groove 81, the inner diameter a1 of the sealing ring is less than the inner diameter b1 of the sealing ring groove, ensuring a certain pre-stretching; the outer diameter a2 of the sealing ring is less than the outer diameter b3 of the sealing ring groove, ensuring a filling rate less than 100%, meeting the requirements of industry specifications; the outer diameter a2 of the sealing ring is greater than the inner diameter b2 of the convex hull, ensuring compression on the outer diameter. As a result, the sealing ring 9 is firmly fixed in the sealing ring groove 81 of the metal housing, and there is no problem after the drop transportation test; the filling rate is less than 100%, and the sealing effect can still be guaranteed after the environmental test (the sealing effect has a probability of failure after the environmental test if the filling rate is greater than 100%).

[0070] The connector of the utility model can be used for vehicle-mounted cameras and can also be used for other facilities.

[0071] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An integrated high-reliability connector, comprising a metal housing (1), an insulator (2) and an inner conductor (3), characterized in that: The metal shell (1), the insulator (2) and the inner conductor (3) are coaxially arranged, and an insert structure is provided between the metal shell (1) and the insulator (2), and the insulator (2) and the metal shell (1) are also provided with axially forward anti-slipping protection through the cooperation of a concave-convex structure.

2. The integrated high-reliability connector according to claim 1, characterized in that: The outer periphery of the insulator (2) is provided with a boss barb structure (21), and the metal shell (1) is provided with an annular groove (12) adapted to the boss barb structure.

3. The integrated high-reliability connector according to claim 2, characterized in that: The front end face of the boss barb structure (21) is a vertical stop face perpendicular to the axial direction of the insulator (2), and the rear end face is an inclined face gradually inclined downward from front to back; a stop face (11) for stopping and limiting the rear end face of the insulator (2) is also provided in the metal shell (1).

4. The integrated high-reliability connector according to claim 2, characterized in that: The front end face and the rear end face of the boss barb structure (21) are both vertical stop faces perpendicular to the axial direction of the insulator (2).

5. The integrated high-reliability connector according to claim 3 or 4, characterized in that: The metal shell (1) is provided with a front end plug-in end (13), a middle holding end (14) and a tail wiring end (15) in sequence from front to back along its axial direction, and the inner diameter of the front end plug-in end (13) is greater than the inner diameter of the middle holding end (14) and the inner diameter of the cavity of the tail wiring end (15); the insulator (2) is formed in the middle holding end (14).

6. The integrated high-reliability connector according to claim 5, characterized in that: The stop surface (11) is a stepped surface between the middle holding end (14) and the tail wiring end (15).

7. The integrated high-reliability connector according to claim 5, characterized in that: The annular groove (12) is located in the middle holding end (14) near the front end plug-in end (13).

8. The integrated high-reliability connector according to claim 6 or 7, characterized in that: The inner conductor (3) is interference-fitted with the small hole section at the front end of the insulator (2) through its outer peripheral barbs (31), and is stopped and limited by the stepped surface formed between its outer peripheral convex key and the transition hole section in the middle of the insulator (2) and the small hole section at the front end; the large diameter section at the rear end of the insulator (2) is provided for the wire pressing section at the rear end of the inner conductor (3) to enter.

9. The integrated high-reliability connector according to claim 8, characterized in that: A crimping sleeve (5) for pressing the shielding layer of the cable (7) onto the tail terminal (15) is also provided on the outer periphery of the tail terminal (15); the tail of the metal shell (1), the crimping sleeve (5) and the front end of the cable (7) are all located in the plastic package (6).

10. The integrated high-reliability connector according to any one of claims 1-4, 6-7 or claim 9, characterized in that: The outer periphery of the metal shell (1) is also provided with a flange (8) for connecting and fixing with the equipment installation panel, and a sealing ring (81) on the flange (8) is provided with a sealing ring for sealing the flange (8) and the equipment panel.

11. The integrated high-reliability connector according to claim 10, characterized in that: The inner diameter of the sealing ring (9) is smaller than the inner diameter of the sealing ring groove (81), so that the sealing ring (9) is in a pre-stretched state.

12. The integrated high-reliability connector according to claim 11, characterized in that: The outer diameter of the sealing ring (9) is smaller than the outer diameter of the sealing ring groove (81), and a plurality of convex humps (82) are distributed circumferentially on the outer wall of the sealing ring groove (81), and the diameter of the inscribed circle of the circumference of the convex humps (82) is smaller than the outer diameter of the sealing ring (9).

13. The integrated high-reliability connector according to claim 12, characterized in that: The sealing ring (9) is an H-shaped rubber ring.

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