Corrosion-resistant dual snap-in circular electrical connector

Abstract

The utility model relates to electric connector technical field discloses a kind of corrosion-resistant double buckle circular electric connectors, solve the problem of low connection reliability, cumbersome operation and single protection in prior art. Including front end shell and rear end shell, rear end shell connecting portion is slidably embedded in front end shell, double buckle linkage locking is realized by pin, connecting rod, lifting seat and cam driving assembly, the automatic locking assembly of pin bottom is ensured synchronous locking on both sides by spring and U-shaped connecting rod;Shell uses nanocrystalline nickel, platinum-based multi-metal and diamond three-layer composite plating layer to improve corrosion resistance and wear resistance. Driving assembly controls cam ejector motion by single knob, realizes double buckle quick locking and automatic reset unlocking. The utility model is combined by mechanical linkage structure and multi-layer protective plating, significantly improves the connection reliability and service life of electric connector in harsh environment such as vibration, salt fog, convenient and efficient operation, suitable for aerospace, ocean engineering and other high-end equipment fields.

Description

Technical Field

[0001] This utility model relates to the field of electrical connector technology, and in particular to a corrosion-resistant double-clamp circular electrical connector. Background Technology

[0002] In the field of electrical connector technology, circular electrical connectors are widely used in high-reliability connection scenarios such as aerospace, marine engineering, and industrial equipment due to their compact structure and ease of sealing. With the development of intelligent equipment and increasingly complex environments, higher demands are placed on the corrosion resistance, connection reliability, and ease of operation of electrical connectors. In existing technologies, the connection structure of electrical connectors mostly adopts threaded locking or single-clamp forms, which suffers from problems such as low locking efficiency and easy loosening under vibration. At the same time, the outer protective layer often suffers from limitations in the performance of a single material, making it difficult to simultaneously meet the requirements of corrosion resistance and wear resistance, resulting in a short service life in harsh environments such as salt spray and acid / alkali conditions.

[0003] Existing patent CN112510413B discloses a corrosion-resistant double-clamp circular electrical connector. Through a supporting base plate, a circular protective cover, and a locking block and slot structure, it achieves convenient installation and removal of the protective cover and internal heat dissipation and moisture protection, thus improving the environmental adaptability of the electrical connector to a certain extent. However, this solution still has the following technical bottlenecks:

[0004] Insufficient mechanical connection reliability: Its snap-fit ​​structure relies on external fastening screws for secondary locking, and does not form an automated locking mechanism. Under high-frequency vibration or impact loads, the snap-fit ​​may loosen, affecting the stability of the electrical connection.

[0005] The drive mechanism is cumbersome to operate: it requires operating multiple fastening screws to install and remove the protective cover, and it cannot be opened and closed quickly with a single operating component, which does not meet the needs of efficient maintenance under complex working conditions.

[0006] The surface protection system is too simple: it only uses a protective cover for physical isolation and corrosion protection, and does not design a multi-level protective coating for the outer shell base material. During long-term service, the outer shell body is easily corroded by corrosive media, resulting in a decrease in mechanical strength.

[0007] To address the aforementioned issues, this utility model provides a corrosion-resistant double-clamp circular electrical connector. Through innovative designs including a double-clamp linkage automatic locking mechanism, a cam-driven single-knob operation system, and a nano-composite coating protective layer, it resolves the contradiction between connection reliability, ease of operation, and long-term corrosion resistance in existing technologies, providing a new solution for the engineering application of high-reliability electrical connectors. Utility Model Content

[0008] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a corrosion-resistant double-clamp circular electrical connector.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A corrosion-resistant double-clamp circular electrical connector includes a front housing and a rear housing. The rear housing has a connecting part at its end, which is slidably embedded in the inner wall of the front housing. The same pin is slidably inserted at both ends of the connection between the front housing and the connecting part. The bottom of the pin is slidably inserted with a plug rod. The bottom of the plug rod is provided with an automatic locking component for limiting the position of the pin rod. The outside of the pin rod is slidably fitted with a sliding sleeve, which is fixed to the inner wall of the rear housing. The end of the pin rod is hinged to a connecting rod, and the end of the connecting rod away from the pin rod is hinged to the same lifting seat. The bottom of the lifting seat is provided with a drive component for controlling its rise. The outer walls of the front housing and the rear housing are provided with a nano-composite coating, which consists of a nanocrystalline nickel coating, a platinum-based multi-metal coating, and a diamond coating from the inside out.

[0011] The above technical solution achieves a rapid and rigid connection between the front and rear shells and prevents loosening under vibration through the mechanical linkage of the double snap-locking pins and the automatic locking component. Combined with the three-layer protection system of nano-composite coating, the electrical connector has both high reliability and strong corrosion resistance, making it suitable for harsh environments.

[0012] Preferably, the drive assembly includes a push rod vertically inserted into the center of the lifting seat, a cam at the bottom of the push rod, the bottom end of the push rod slidingly abutting against the outer wall of the cam, a rotating rod horizontally connected to the cam, the rotating rod slidingly passing through the outer wall of the rear housing, and a knob at the end of the rotating rod.

[0013] The above technical solution uses a cam-push rod transmission structure for the drive component. By rotating the knob, the lateral movement of the pins on both sides can be controlled synchronously, realizing single-operator drive for double-locking, simplifying the operation process and improving locking / unlocking efficiency.

[0014] Preferably, the automatic locking assembly includes a sleeve that is slidably fitted onto the bottom end of the insertion rod, and a spring is provided on the bottom wall inside the sleeve, with the top of the spring abutting against the bottom end of the insertion rod.

[0015] Through the above technical solution: the cooperation between the spring and the sleeve in the automatic locking assembly allows the insertion rod to automatically engage with the locking groove after the pin is in place, forming an elastic mechanical lock, which effectively prevents the pin from sliding laterally due to external force vibration, and enhances the impact resistance and reliability of the connection structure.

[0016] Furthermore, the bottom center of the insertion rod is provided with the same U-shaped connecting rod, both ends of which slide through the bottom of the sleeve and are connected to the bottom of the insertion rod.

[0017] The above technical solution uses a U-shaped connecting rod to rigidly connect the two insert rods, ensuring that the two insert rods move synchronously during the locking process, avoiding unilateral locking failure, achieving symmetrical and balanced locking, and improving the consistency and stability of the double-buckle structure.

[0018] Furthermore, a guide sleeve is provided on the outer circumferential surface of the push rod.

[0019] Through the above technical solutions, the guide sleeve precisely guides the vertical movement of the push rod, reduces radial offset during the movement, ensures smooth lifting of the lifting seat, thereby improving the lateral movement accuracy of the pin, avoiding jamming, and enhancing the motion reliability of the drive system.

[0020] Preferably, each pin is provided with a baffle at the top, and the same top spring is provided between the baffle and the sliding sleeve.

[0021] Through the above technical solution, the cooperation between the top spring and the baffle provides the pin with a reset elastic force, so that the pin can be quickly retracted without continuous external force during unlocking, realizing the automatic reset function, simplifying operation and improving separation efficiency.

[0022] Preferably, the outer periphery of the connecting part is symmetrically provided with positioning protrusions, and the inner wall of the front housing is provided with positioning grooves that are adapted to the positioning protrusions.

[0023] The above technical solution achieves the initial coaxial positioning of the front and rear shells through the cooperation of the positioning protrusion and the positioning groove, ensuring that the pin is accurately aligned with the pin hole, avoiding skewing during insertion, improving assembly convenience and ensuring the coaxiality accuracy of the connection structure.

[0024] The beneficial effects of this utility model are as follows:

[0025] 1. Highly reliable connection and strong environmental adaptability: The automatic locking component with double snap-locking pins forms a dual anti-loosening structure of "mechanical locking + elastic snap-fit" to ensure that it will not loosen under harsh working conditions; combined with a three-layer coating of nanocrystalline nickel / platinum-based multimetal / diamond, a "physical barrier-electrochemical inhibition-matrix reinforcement" protection system is constructed, with a weight loss rate of <0.01% after 1000 hours of salt spray corrosion, which significantly improves corrosion resistance and wear resistance.

[0026] 2. The cam-push rod drive mechanism allows for simultaneous control of the double-locking mechanism with a single knob rotated 90°, simplifying the operation process. The automatic spring reset device enables the pin to retract quickly during unlocking without the need for continuous force, reducing the time required for connection / disconnection and meeting the rapid assembly and disassembly needs of aerospace and other scenarios.

[0027] 3. The positioning protrusion and positioning groove work together to achieve a high level of coaxial positioning accuracy, ensuring that the pin and pin hole are precisely aligned; the guide sleeve precision guide rod and U-shaped connecting rod synchronously link the insert rod, which reduces the displacement difference of the two sides of the buckle, avoids jamming or unilateral failure, and improves structural consistency and assembly reliability.

[0028] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of a corrosion-resistant double-clamp circular electrical connector proposed in this utility model;

[0030] Figure 2 This is a schematic diagram of the connection structure between the front and rear shells of a corrosion-resistant double-clamp circular electrical connector proposed in this utility model.

[0031] Figure 3 This is a schematic diagram of the automatic locking assembly structure of a corrosion-resistant double-clamp circular electrical connector proposed in this utility model;

[0032] Figure 4 This utility model proposes a corrosion-resistant double-clamp circular electrical connector. Figure 3 A magnified schematic diagram of the local structure at point A;

[0033] Figure 5 This utility model proposes a corrosion-resistant double-clamp circular electrical connector. Figure 3 A magnified schematic diagram of the local structure at point B;

[0034] Figure 6 This is a schematic diagram of the nanocomposite coating structure of a corrosion-resistant double-clamp circular electrical connector proposed in this utility model.

[0035] In the diagram: 1. Front housing; 2. Rear housing; 3. Connecting part; 4. Positioning protrusion; 5. Positioning groove; 6. Pin; 7. Sliding sleeve; 8. Insert rod; 9. Sleeve; 10. Spring; 11. Connecting rod; 12. Lifting seat; 13. Top rod; 14. Guide sleeve; 15. Cam; 16. Rotating rod; 17. U-shaped connecting rod; 18. Knob; 19. Top spring; 20. Baffle; 21. Nanocrystalline nickel plating; 22. Platinum-based multi-metal plating; 23. Diamond coating. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0037] Example 1, referring to Figures 1 to 6A corrosion-resistant double-clamp circular electrical connector includes a front housing 1 and a rear housing 2. The rear housing 2 has a connecting part 3 at its end, which is slidably embedded in the inner wall of the front housing 1. The same pin 6 is slidably inserted at both ends of the connection between the front housing 1 and the connecting part 3. The bottom of the pin 6 is slidably inserted with a plug 8. The bottom of the plug 8 is provided with an automatic locking component for limiting the position of the pin 6. The outside of the pin 6 is slidably fitted with a sliding sleeve 7, which is fixed to the inner wall of the rear housing 2. The end of the pin 6 is hinged with a connecting rod 11. The end of the connecting rod 11 away from the pin 6 is hinged with the same lifting seat 12. The bottom of the lifting seat 12 is provided with a drive component for controlling its rise. The outer walls of the front housing 1 and the rear housing 2 are provided with a nano-composite coating, which consists of a nanocrystalline nickel coating 21, a platinum-based multi-metal coating 22, and a diamond coating 23 from the inside out.

[0038] In this embodiment, the driving component includes a top rod 13 vertically inserted into the center of the lifting seat 12. A cam 15 is provided at the bottom of the top rod 13. The bottom end of the top rod 13 slides against the outer wall of the cam 15. A rotating rod 16 is horizontally connected to the cam 15. The rotating rod 16 slides through the outer wall of the rear housing 2. A knob 18 is provided at the end of the rotating rod 16. The automatic locking component includes a sleeve 9 slidably fitted onto the bottom end of the insertion rod 8. A spring 10 is provided on the bottom wall inside the sleeve 9. The top of the spring 10 abuts against the bottom end of the insertion rod 8. The same U-shaped connecting rod 17 is provided at the center of the bottom end of the insertion rod 8. Both ends of the U-shaped connecting rod 17 slide through the bottom of the sleeve 9 and are connected to the bottom end of the insertion rod 8. A guide sleeve 14 is slidably fitted onto the outer periphery of the top rod 13. A baffle 20 is provided on the top of the pin 6. The same top spring 19 is provided between the baffle 20 and the sliding sleeve 7. A positioning protrusion 4 is symmetrically provided on the outer periphery of the connecting part 3. A positioning groove 5 adapted to the positioning protrusion 4 is opened on the inner wall of the front housing 1.

[0039] The working principle of this embodiment:

[0040] Connection and locking process

[0041] 1. Initial axial positioning

[0042] When the connecting part 3 of the rear housing 2 is inserted into the front housing 1, the positioning protrusion 4 on the outer periphery of the connecting part slides along the positioning groove 5 on the inner wall of the front housing until the protrusion falls into the positioning point in the groove, achieving coaxial positioning with an accuracy of ±0.2mm, providing a mechanical reference for subsequent locking.

[0043] 2. Double-latch mechanical locking

[0044] Rotate knob 18 clockwise → Rotating rod 16 drives cam 15 to rotate until the raised profile surface faces upward → The top surface of cam pushes push rod 13 to rise vertically along guide sleeve 14 → The top of push rod abuts against lifting seat 12 and pushes it to move upward synchronously → Lifting seat supports push rod 6 to both sides through hinged connecting rod 11.

[0045] The two ends of the pin are inserted into the pin holes of the front housing 1 and the connecting part 3, respectively, to form a rigid connection across the housing.

[0046] 3. Automatic locking reinforcement

[0047] When pin 6 moves to both sides, its bottom insert 8 extends synchronously with pin 6 → the bottom end of insert 8 presses against spring 10 inside sleeve 9 → when the bottom end of insert 6 reaches the locking groove at the bottom of front housing, spring 10 resets and pushes insert 8 into the groove → U-shaped connecting rod 17 ensures that the insert 8 on both sides moves synchronously, forming a four-point locking structure of "double pin + double lock" to prevent pin 6 from sliding laterally due to vibration.

[0048] Unlocking and separating process

[0049] 1. Drive system unloading

[0050] Rotate knob 18 counterclockwise → cam 15 rotates until the concave contour surface faces upward → push rod 13 loses cam support → lifting seat 12 will not move down temporarily due to the action of the insert rod and remains in the locked state.

[0051] 2. Locking structure released

[0052] When pin 6 moves toward the center, its bottom insert 8 retracts inward simultaneously → the U-shaped connecting rod 17 at the bottom of the insert 8 drives the insert rods on both sides to compress the spring 10 inside the sleeve 9 simultaneously → the bottom of the insert 8 disengages from the locking groove of the front housing → the mechanical locking state is released, and the pin gains lateral movement freedom.

[0053] 3. Elastic reset and separation

[0054] The baffle 20 at the top of the pin 6 is pushed by the elastic force of the top spring 19 to quickly return the pin to the center → both ends of the pin are completely removed from the pin holes of the front housing and the connecting part → the rear housing 2 can be pulled out axially along the positioning groove 5, and the positioning protrusion 4 is removed from the positioning groove, completing the separation without resistance.

[0055] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A corrosion-resistant double-clamp circular electrical connector, comprising a front housing (1) and a rear housing (2), characterized in that, The rear end shell (2) is provided with a connecting part (3), which is slidably embedded in the inner wall of the front end shell (1). Both ends of the connection between the front end shell (1) and the connecting part (3) are slidably inserted with the same pin (6). The bottom of the pin (6) is slidably inserted with a vertical insert (8). The bottom of the insert (8) is provided with an automatic locking component for limiting the position of the pin (6). The outside of the pin (6) is slidably fitted with a sliding sleeve (7). The sliding sleeve (7) is fixed to the inner wall of the pin (6). The inner wall of the rear housing (2) has connecting rods (11) hinged to the ends of the pins (6). The connecting rods (11) are hinged to the same lifting seat (12) at the ends away from the pins (6). The bottom of the lifting seat (12) is provided with a drive assembly for controlling its rise. The outer walls of the front housing (1) and the rear housing (2) are provided with nanocomposite coatings. The nanocomposite coatings are, from the inside out, a nanocrystalline nickel coating (21), a platinum-based multimetal coating (22), and a diamond coating (23).

2. The corrosion-resistant, dual-latch, round electrical connector of claim 1, wherein, The drive assembly includes a top rod (13) vertically inserted into the center of the lifting seat (12). The bottom of the top rod (13) is provided with a cam (15). The bottom end of the top rod (13) slides against the outer wall of the cam (15). The cam (15) is horizontally connected to a rotating rod (16). The rotating rod (16) slides through the outer wall of the rear housing (2). The end of the rotating rod (16) is provided with a knob (18).

3. The corrosion-resistant, double-clasp, circular electrical connector of claim 2, wherein, The automatic locking assembly includes a sleeve (9) that is slidably fitted onto the bottom end of the insertion rod (8). The inner bottom wall of the sleeve (9) is provided with a spring (10), and the top of the spring (10) abuts against the bottom end of the insertion rod (8).

4. The corrosion-resistant, double-clasp, circular electrical connector of claim 3, wherein, The bottom center of the insertion rod (8) is provided with the same U-shaped connecting rod (17), and both ends of the U-shaped connecting rod (17) slide through the bottom of the sleeve (9) and are connected to the bottom of the insertion rod (8).

5. The corrosion-resistant, double-clasp, circular electrical connector of claim 4, wherein, The guide sleeve (14) is slidably sleeved on the outer circumferential surface of the top rod (13).

6. The corrosion-resistant, double-clasp, circular electrical connector of claim 5, wherein, Each pin (6) is provided with a baffle (20) at the top, and the same top spring (19) is provided between the baffle (20) and the sliding sleeve (7).

7. The corrosion-resistant, double-clasp, circular electrical connector of claim 6, wherein, The connecting part (3) has a symmetrical positioning protrusion (4) on its outer periphery, and the inner wall of the front shell (1) has a positioning groove (5) that matches the positioning protrusion (4).

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