An electrical connector with anti-drop function

Abstract

The utility model discloses a kind of electric connectors with anti-falling function, it is related to electric connector technical field, including mutually matched plug and socket, plug shell is equipped with outer thread, socket connecting nut is equipped with inner thread, connection is realized by thread engagement, retaining ring is equipped between connecting nut and outer insulator, half is clamped into connecting nut slot, half is loaded into outer insulator slot, fixed axial position, plug shell and connecting nut outer surface are provided with straight line, can increase operating friction, each insulating component uses high-strength engineering plastic, pin and jack element uses gold-plated copper alloy, sealing element uses fluorosilicone glue, the utility model is positioned by thread locking and retaining ring combination, connection is firm, anti-falling effect is good, structure strength is big, service life is long, convenient operation, sealing performance is excellent, can keep stable performance under high-speed vibration and impact environment, suitable for aviation, aerospace, weapon, warship, communication and other fields.

Description

Technical Field

[0001] This utility model relates to the field of electrical connector technology, specifically a circular electrical connector with threaded locking and anti-detachment function. Background Technology

[0002] Existing circular connector technology consists of a plug and a socket, with pins and sockets respectively installed inside to achieve circuit connection. The plug and socket are fixed by an interference fit between the plug insulator and the socket's outer insulator, using the compression deformation between the plastic insulators to prevent the connector from separating. However, after repeated insertion and removal, the interference fit structure is prone to wear, and the material is susceptible to plastic deformation, failing to achieve the pre-required fixing force, causing the connector plug and socket to separate and detach.

[0003] Therefore, this utility model provides a circular electrical connector with threaded locking and anti-detachment function to solve the problems of short service life and easy separation and detachment of existing circular connectors. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an electrical connector with an anti-detachment function, thus solving the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an electrical connector with anti-detachment function, comprising a plug and a socket;

[0006] The plug consists of a plug shell, an insulator, a pin structure, a sealing ring, a sealing gasket, and a wire.

[0007] The socket consists of a connecting nut, a socket shell, an outer insulator, a retaining ring, a socket structure, an inner insulator, a second sealing gasket, and a second wire.

[0008] The plug housing includes an external thread, a straight thread, and a riveting groove. The riveting groove is used to rivet an insulator. The insulator is embedded in a pin structure and has a slot on its surface and a beveled structure at its end. A sealing ring is fitted inside the slot.

[0009] The pin structure is connected to a first wire, and a sealing gasket is fitted at the root of the first wire. The sealing gasket is located between the bottom of the inner cavity of the plug shell and the tail of the insulator.

[0010] The connecting nut has an internal thread, two straight lines on the outside, and a slot on the inside, and the external thread and the internal thread cooperate with each other;

[0011] The socket housing has a second riveting groove, which is riveted to an outer insulator. The outer insulator has an internal bevel structure and an external slot. The retaining ring is positioned between the slot one of the connecting nut and the slot two of the outer insulator. A socket structure is embedded inside the outer insulator. The socket structure is embedded in the inner insulator and terminated with a second wire. A sealing gasket is fitted at the root of the second wire. The sealing gasket is located between the bottom of the inner cavity of the socket housing and the tail of the outer insulator.

[0012] As a further technical solution of this utility model, the retaining ring is an elastic element, with one half inserted into the slot one of the connecting nut and the other half inserted into the slot two of the outer insulator.

[0013] As a further technical solution of this utility model, the retaining ring is made of spring steel, is "C" shaped and has a notch, and its original diameter before assembly is larger than the diameter of slot one and slot two.

[0014] As a further technical solution of this utility model, the slot one of the connecting nut and the slot two of the outer insulator are both set perpendicular to the connector axis.

[0015] The depth of the second slot in the outer insulator is greater than the diameter of the retaining ring wire, and the depth of the first slot in the connecting nut is half the diameter of the retaining ring wire.

[0016] As a further technical solution of this utility model, the plug shell and the connecting nut are both made of high-strength aluminum alloy, and the insulator, outer insulator and inner insulator are all injection molded from high-strength engineering plastics.

[0017] As a further technical solution of this utility model, the pin structure includes three independent pin elements, the socket structure includes three independent socket elements, the pin elements and the socket elements are engaged in a one-to-one correspondence, and both the pin elements and the socket elements are made of copper alloy and are gold-plated on the surface.

[0018] As a further technical solution of this utility model, the sealing ring, sealing gasket one and sealing gasket two are all made of fluorosilicone vulcanized molding, and the sealing ring is interference fit with the outer insulator.

[0019] As a further technical solution of this utility model, the inclined structure of the insulator is interference-fitted with the inclined structure of the outer insulator.

[0020] This utility model provides an electrical connector with anti-detachment function, which has the following advantages compared with the prior art:

[0021] 1. This design is an electrical connector with anti-detachment function. It adopts a structure that combines threaded locking and retaining ring positioning. Compared with the interference fit of traditional plastic parts, it effectively solves the problem of easy connector detachment. The connection firmness and reliability are significantly improved. Moreover, the plug shell and connecting nut are made of high-strength aluminum alloy, the pins and sockets are made of gold-plated copper alloy, and the retaining ring is made of spring steel. The structure has high strength, wear resistance, aging resistance and long service life.

[0022] 2. This design presents an electrical connector with anti-detachment function, equipped with a sealing ring and a sealing gasket, combined with the inclined interference fit of the insulator, which provides excellent sealing performance, is dustproof and waterproof, suitable for complex environments, and can maintain stable performance under high-speed vibration and impact. It has a wide range of applications and can be used in aviation, aerospace, weaponry, shipbuilding, communications and other fields. Moreover, it has a simple structure, low processing cost, good product quality consistency and strong market competitiveness. Attached Figure Description

[0023] Figure 1 This is a schematic cross-sectional view of the entire utility model;

[0024] Figure 2 This is a cross-sectional schematic diagram of the plug in this utility model;

[0025] Figure 3 This is a cross-sectional view of the socket in this utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the plug shell in this utility model;

[0027] Figure 5 This is a schematic diagram of the connecting nut structure in this utility model;

[0028] Figure 6 This is a schematic diagram of the structure of the socket's outer insulator in this utility model;

[0029] Figure 7 This is a schematic diagram of the structure of the retaining ring in this utility model;

[0030] Figure 8 This is a schematic diagram of the insulator structure in this utility model;

[0031] Figure 9 This is a schematic diagram of the connection structure between the pin structure and the wire in this utility model;

[0032] Figure 10 This is a schematic diagram of the connection structure between the socket structure and the second wire in this utility model.

[0033] In the diagram: 1. Plug; 2. Socket; 3. Plug housing; 3-1. External thread; 3-2. Straight thread one; 3-3. Riveting groove one; 4. Insulator; 4-1. Slot; 5. Pin structure; 5-1, 5-2, 5-3. Pin element; 6. Sealing ring; 7. Sealing gasket one; 8. Wire one; 8-1. Root; 9. Connecting nut; 9-1. Internal thread; 9-2. Straight thread two; 9-3. Slot one; 10. Socket housing; 10-1. Riveting groove two; 11. External insulator; 11-1. Bevel structure; 11-2. Slot two; 12. Retaining ring; 12-1. Notch; 13. Socket structure; 13-1, 13-2, 13-3. Socket element; 14. Internal insulator; 15. Sealing gasket two; 16. Wire two; 16-1. Wire root. Detailed Implementation

[0034] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0035] Please see Figure 1-10 As shown, this utility model provides a technical solution for an electrical connector with anti-detachment function: an electrical connector with anti-detachment function includes a plug 1 and a socket 2. The plug 1 is composed of a plug shell 3, an insulator 4, a pin structure 5, a sealing ring 6, a sealing gasket 1 7, and a wire 1 8. The sealing ring 6, the sealing gasket 1 7, and the sealing gasket 2 15 are all vulcanized from fluorosilicone, which has high resilience and good sealing effect. The sealing ring 6 is interference-fitted with the outer insulator 11.

[0036] The plug housing 3 is made of high-strength aluminum alloy through machining, which has high material strength, good machinability, and a simple structure that is easy to process. The surface of the housing is coated, making it environmentally resistant. It mainly plays a protective role under high-speed vibration and impact of the connector. The plug housing 3 is provided with external thread 3-1, straight thread 3-2, and riveting groove 3-3. Specifically, the external thread 3-1 is provided on the outside, which is in a mating relationship with the internal thread 9-1 of the socket 2 for connection and disengagement. This design facilitates a stable connection between the connector plug 1 and the socket 2, and the threaded connection structure is reliable and has a long service life. The straight thread structure 3-2 on the outside of the plug housing 3 is used to increase the friction when the connector plug 1 and the socket 2 are connected and disengaged. The straight thread structure (i.e., straight thread 3-2) is easy to process, making the connector easier to use in practical applications. The riveting groove 3-3 is used to rivet the insulator 4 to achieve a fixed assembly. The plug housing 3 and the plug insulator 4 are assembled and fixed through the circumferentially distributed riveting groove 3-3.

[0037] Both the outer insulator 11 and the inner insulator 14 are injection molded from high-strength engineering plastics. The insulator 4 is embedded in the pin structure 5. The outer cylindrical surface of the insulator has a slot 4-1 and the end has a bevel structure. A sealing ring 6 is installed in the slot 4-1 to provide a seal. The pin structure 5 is connected to the wire 8. The root 8-1 of the wire 8 is fitted with a sealing gasket 7. The sealing gasket 7 is located between the bottom of the inner cavity of the plug shell 3 and the tail of the insulator 4 to further improve the sealing effect.

[0038] The socket 2 consists of a connecting nut 9, a socket housing 10, an outer insulator 11, a retaining ring 12, a socket structure 13, an inner insulator 14, a second sealing gasket 15, and a second wire 16. The connecting nut 9 is made of high-strength aluminum alloy, machined for high strength and good machinability. Its simple structure makes it easy to process. The outer housing has a surface coating, providing environmental resistance and primarily protecting the connector from high-speed vibration and impact. Its inner cavity has an internal thread 9-1, which meshes with the external thread 3-1 for engagement and disengagement with the plug 1. This design facilitates a secure connection between the connector plug 1 and the socket 2, and the threaded connection structure is reliable. With a long service life, the connecting nut 9 has a straight groove 9-2 on the outside to increase the friction when the connector plug and socket are connected and disconnected. The straight groove structure (i.e., straight groove 9-2) is easy to process and makes the connector easier to use in practical applications. The connecting nut 9 has a slot 9-3 in the inner cavity to assemble and fix the retaining ring 12, which is connected and fixed to the outer insulator 11. The inner cavity of the connecting nut 9 and the outer cylinder of the outer insulator 11 have a clearance fit structure, which can rotate freely without interference. The slot 9-3 has the characteristics of simple structure and easy processing. The engagement and disengagement rotation of the internal and external threads of the connector is transmitted as the axial movement of the plug 1 and socket 2 for connection and disengagement.

[0039] It should be noted that the slot 9-3 of the connecting nut 9 and the slot 11-2 of the outer insulator 11 are both perpendicular to the connector axis. The depth of the slot 11-2 of the outer insulator 11 is greater than the wire diameter of the retaining ring 12, which facilitates the insertion of the retaining ring 12. The depth of the slot 9-3 of the connecting nut 9 is half the wire diameter of the retaining ring 12, which only accommodates half of the retaining ring 12. After the retaining ring 12 is assembled, it provides a fixing force by pressing against the connecting nut 9 on the outside. When the connecting nut 9 rotates, it does not change its relative position with the axis of the socket 2, but only generates circumferential movement, which transmits the circumferential movement of thread engagement and disengagement as the axial connection and disengagement movement of the plug 1 and the socket 2.

[0040] The socket housing 10 is provided with a second riveting groove 10-1, which is used to rivet the outer insulator 11. The outer insulator 11 is injection molded from high-strength engineering plastic. Engineering plastic has excellent environmental resistance, molding performance, good insulation performance, and high strength. The injection molding of parts has the characteristics of good quality consistency and high efficiency. It fixes the internal socket contact of the connector and also plays an insulating and shielding role in electrical performance. In addition, it cooperates with the plug insulator 4 and the sealing ring 6 to seal and prevent dust and water. The inner end of the outer insulator 11 is provided with a beveled structure 11-1 and the outer end is provided with a second slot 11-2. The beveled structure of the insulator 4 and the beveled structure 11-1 of the outer insulator 11 are interference fit to provide a preset resistance to prevent the plug and socket from separating.

[0041] The retaining ring 12 is positioned between the first slot 9-3 of the connecting nut 9 and the second slot 11-2 of the outer insulator 11. The retaining ring 12 is an elastic element; half of it is inserted into the first slot 9-3 of the connecting nut 9, and the other half is inserted into the second slot 11-2 of the outer insulator 11, achieving axial fixation. The retaining ring 12 is made of spring steel with a passivated surface. The retaining ring 12 is designed with square wire winding, forming a "C" shape with a notch 12-1. Its original diameter before assembly is larger than the diameters of the first slot 9-3 and the second slot 11-2. After assembly… The retaining ring 12 automatically snaps into the two slots, namely slot one 9-3 and slot two 11-2. The design purpose is to allow the retaining ring 12 to first be submerged in slot two 11-2 of the outer insulator 11 during the assembly process so that the connecting nut 9 can be axially inserted. When slot one 9-3 of the connecting nut 9 is aligned with slot two 11-2 of the outer insulator 11, the retaining ring 12 expands outward under its own elastic force and automatically snaps into the slots. Half of it is snapped into slot one 9-3 of the connecting nut 9, and the other half is inserted into slot two 11-2 of the outer insulator 11, thus achieving the assembly purpose.

[0042] Furthermore, a socket structure 13 is embedded inside the outer insulator 11. The socket structure 13 is embedded in the inner insulator 14 and terminated with a second wire 16. The wire 16 is provided with a core wire and a shielding layer, and is insulated from each other by an insulation layer and an outer sheath. A sealing gasket 15 is fitted at the root 16-1 of the second wire 16. The sealing gasket 15 is located between the bottom of the inner cavity of the socket housing 10 and the tail 11-3 of the outer insulator 11.

[0043] The pin structure 5 includes three independent pin elements, namely pin element 5-1, pin element 5-2, and pin element 5-3. The socket structure 13 includes three independent socket elements, namely socket element 13-1, socket element 13-2, and socket element 13-3. The pin elements and socket elements mesh one-to-one. Furthermore, both the three pin elements of the pin structure 5 and the three socket elements of the socket structure 13 are made of copper alloy and gold-plated, exhibiting excellent conductivity and resistance to insertion and removal. In addition, pin components 5-1, 5-2, and 5-3 are respectively soldered to the two core wires and the wire shielding layer of conductor 18, and socket components 13-1, 13-2, and 13-3 are respectively soldered to the two core wires and the wire shielding layer of conductor 216. Pin component 5-1 engages with socket component 13-1, and 5-2 engages with 13-2 to realize the connection of two independent circuits; pin component 5-3 engages with socket component 13-3 to realize the shielded connection and shield external signal interference.

[0044] The working principle of this utility model is as follows: When connecting the plug 1 and the socket 2, by rotating the connecting nut 9, the external thread 3-1 of the plug shell 3 engages with the internal thread 9-1 of the connecting nut 9, converting the circumferential motion into axial motion, so that the plug and socket gradually approach and are inserted.

[0045] During the insertion process, the inclined structure of the insulator 4 is interference-fitted with the inclined structure 11-1 of the outer insulator 11, and the sealing ring 6 is tightly fitted with the outer insulator 11 to achieve a seal. In addition, the retaining ring 12 fixes the axial position of the connecting nut 9 and the outer insulator 11 to prevent the connecting nut 9 from loosening.

[0046] During separation, the connecting nut 9 is rotated in the opposite direction, the threads engage and disengage, causing the plug 1 and socket 2 to separate axially. Under high-speed vibration and impact, the combined effect of the thread structure and the positioning of the retaining ring 12 prevents the connector from accidentally falling off and ensures stable circuit connection.

[0047] It should be noted that the assembly of the plug and socket connectors in this design is mostly a semi-automated and manual assembly process, as detailed below:

[0048] ① Assembly process of plug 1:

[0049] Soldering the pin structure: In accordance with the process requirements of the work instructions, the wires are stripped and cut to the required size, and the pin components 5-1, 5-2, and 5-3 are soldered respectively. After passing the inspection, they are transferred to the next process.

[0050] Molded Insulator: In this process, according to the process requirements of the work instruction, the pin structure 5 and the wire are injected into the insulator. After passing the inspection, it is transferred to the next process.

[0051] Install sealing ring 6: In accordance with the process requirements of the work instruction, the sealing ring 6 is installed into the slot 4-1 of the insulator 4. After the process is completed, it is transferred to the next process.

[0052] Riveting the outer shell: This process is a semi-automatic assembly according to the process requirements of the work instructions. The sealing gasket 7 is put into the wire 8, and the insulator 4 is installed flush with the end face of the plug shell 3. The semi-automatic equipment is used for riveting. After passing the inspection, it is transferred to the next process.

[0053] ② Assembly process of socket 2:

[0054] Insertion hole structure: In accordance with the process requirements of the work instruction, the insertion hole elements 13-1, 13-2, and 13-3 are inserted into the inner insulator 14. After the process is completed, it is transferred to the next process.

[0055] Soldering sockets: In accordance with the process requirements of the work instructions, the wire 216 is stripped and cut to the required size, and socket components 13-1, 13-2, and 13-3 are soldered respectively. After passing the inspection, it is transferred to the next process.

[0056] Installing the outer insulator 11: In accordance with the process requirements of the work instruction, this process involves installing the socket structure 13 and the inner insulator 14 into the outer insulator 11, and then moving on to the next process.

[0057] Molded components: In accordance with the process requirements of the work instructions, the outer insulator 11 components are injection molded into one piece. After passing the inspection, they are transferred to the next process.

[0058] Riveting the outer shell: This process is a semi-automatic assembly according to the process requirements of the work instructions. The sealing gasket 2 15 is put into the wire 2 16, and the outer insulator 11 is put into the socket shell 10. The semi-automatic equipment is used for riveting. After passing the inspection, it is transferred to the next process.

[0059] Installing the connecting nut: In accordance with the process requirements of the work instruction, the retaining ring 12 is inserted into the connecting nut 9 and the outer insulator 11. After passing the inspection, it is transferred to the next process.

[0060] Inspection: This process mainly involves inspecting the connector's appearance, electrical performance, and mechanical performance to ensure that the connectors produced are qualified products.

[0061] Warehousing: Pack qualified connectors according to requirements, affix labels indicating the product name, model, quantity, batch number, etc., and complete the warehousing procedures.

[0062] Application Example 1: Application in parachute control equipment:

[0063] Connection implementation: In the electronic system connection of the parachute control equipment, the plug and socket provide thread engagement to realize the line conduction of the wires at both ends. Through the elastic structure engagement of the pin structure and the socket structure, the circuit is connected with the wires, which enables electrical performance and signal transmission and achieves anti-interference shielding.

[0064] Advantages: The threaded anti-loosening structure of this utility model maintains stable engagement under the vibration and impact requirements of parachute control equipment operation. The connector's mating and disassembly are easy and smooth, the connection is stable and reliable, and its mechanical life verification is high, far exceeding the 1000-cycle mechanical life requirement for connectors in parachute control equipment. In multiple flight tests, the elastic contact provided by the pin and socket structures achieved stable electrical signal transmission without any contact failures, fully meeting the stringent reliability requirements for connectors in the parachute control equipment field.

[0065] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. An electrical connector with anti-detachment function, characterized in that, Includes a plug (1) and a socket (2); The plug (1) is composed of a plug shell (3), an insulator (4), a pin structure (5), a sealing ring (6), a sealing gasket (7), and a wire (8); The socket (2) is composed of a connecting nut (9), a socket shell (10), an outer insulator (11), a retaining ring (12), a socket structure (13), an inner insulator (14), a second sealing gasket (15), and a second wire (16); The plug housing (3) includes an external thread (3-1), a straight thread (3-2), and a riveting groove (3-3). An insulator (4) is riveted to the riveting groove (3-3). The insulator (4) is embedded in the pin structure (5), and a slot (4-1) is provided on its surface and a bevel structure is provided at its end. A sealing ring (6) is installed in the slot (4-1). The pin structure (5) is connected to the first wire (8), and the root (8-1) of the first wire (8) is fitted with a sealing gasket (7). The sealing gasket (7) is located between the bottom of the inner cavity of the plug shell (3) and the tail of the insulator (4). The connecting nut (9) has an internal thread (9-1) inside, a straight thread (9-2) on the outside, and a slot (9-3) inside. The external thread (3-1) and the internal thread (9-1) cooperate with each other. The socket housing (10) is provided with a second riveting groove (10-1), which is riveted to an outer insulator (11). The outer insulator (11) has an inclined structure (11-1) inside its head end and a second slot (11-2) outside its body. The retaining ring (12) is located between the first slot (9-3) of the connecting nut (9) and the second slot (11-2) of the outer insulator (11). The outer insulator (11) is embedded with a socket structure (13). The socket structure (13) is embedded in the inner insulator (14) and terminated with a second wire (16). The root of the second wire (16-1) is fitted with a second sealing gasket (15). The second sealing gasket (15) is located between the bottom of the inner cavity of the socket housing (10) and the tail (11-3) of the outer insulator (11).

2. An electrical connector with anti-detachment function according to claim 1, characterized in that, The retaining ring (12) is an elastic element, with one half inserted into the first slot (9-3) of the connecting nut (9) and the other half inserted into the second slot (11-2) of the outer insulator (11).

3. An electrical connector with anti-detachment function according to claim 1, characterized in that, The retaining ring (12) is made of spring steel, is "C" shaped and has a notch (12-1), and its original diameter before assembly is larger than the diameter of slot one (9-3) and slot two (11-2).

4. An electrical connector with anti-detachment function according to claim 1, characterized in that, The slot one (9-3) of the connecting nut (9) and the slot two (11-2) of the outer insulator (11) are both set perpendicular to the connector axis; The groove 2 (11-2) of the outer insulator (11) is deeper than the wire diameter of the retaining ring (12), and the groove 1 (9-3) of the connecting nut (9) is half the wire diameter of the retaining ring (12).

5. An electrical connector with anti-detachment function according to claim 1, characterized in that, The plug housing (3) and the connecting nut (9) are both made of high-strength aluminum alloy, and the insulator (4), outer insulator (11) and inner insulator (14) are all made of high-strength engineering plastic injection molding.

6. An electrical connector with anti-detachment function according to claim 1, characterized in that, The pin structure (5) includes three independent pin elements (5-1, 5-2, 5-3), and the socket structure (13) includes three independent socket elements (13-1, 13-2, 13-3). The pin elements and socket elements are meshed one-to-one. Both the pin elements and socket elements are made of copper alloy and are gold-plated.

7. An electrical connector with anti-detachment function according to claim 1, characterized in that, The sealing ring (6), sealing gasket one (7) and sealing gasket two (15) are all formed by vulcanization of fluorosilicone, and the sealing ring (6) is interference-fitted with the outer insulator (11).

8. An electrical connector with anti-detachment function according to claim 1, characterized in that, The inclined structure of the insulator (4) is interference-fitted with the inclined structure (11-1) of the outer insulator (11).

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