A field quick wire making electrical connector

Abstract

The application relates to a field quick-wiring electric connector, which comprises a shell part, the shell part comprises a front shell and a rear shell connected to the rear end of the front shell, an insulator is arranged in the front shell, a contact part is arranged in the insulator, a shielding spring is arranged at the front end of the front shell, the rear end of the front shell is provided with a shielding ring, a pressing ring is arranged in the rear shell, the pressing ring can rotate along an axis in the rear shell, an axial stop structure is arranged in the rear shell, the axial stop structure is used for pushing the pressing ring and enabling the pressing ring to press a cable shielding layer of a cable on the shielding ring. The application can realize field quick connection of the cable and the contact part, and can realize stable shielding connection effect between the cable shielding layer and the shell part without trimming the cable shielding layer.

Description

Technical Field

[0001] This invention belongs to the field of connector technology, and specifically relates to a field-fabricated wire connector. Background Technology

[0002] Electrical connectors are widely used in communications, industry, aerospace, and other fields, requiring quick and reliable connections between plugs and sockets. Field-made wire connectors are generally used in indoor or outdoor applications where cable connections need to be made in the field. They not only require quick connection and disconnection but also simple and convenient operation. Furthermore, with the increasing demand for high-power and miniaturized upstream equipment, connectors must improve their performance without increasing their size.

[0003] Currently, most field-made wire connectors use screw clamping, requiring specialized torque tools for torque control to tighten the cable. Furthermore, the cable's braided shielding also requires special trimming or treatment before installation onto the connector. Additionally, some field-made wire connectors use spring-loaded clamping structures, which are generally rectangular in shape and larger in size compared to circular connectors with similar performance, hindering on-site installation and the miniaturization of upstream equipment. Therefore, the disadvantages of existing technologies are: 1. When processing the cable shielding layer in field-made wire connectors, trimming or special treatment is generally required to adapt to the structure and achieve the required shielding performance; 2. While screw clamping provides a reliable connection, it is time-consuming and requires specialized torque tools to ensure reliable cable tightening; 3. Rectangular connectors using spring-loaded clamping are bulky and occupy significant installation space. Summary of the Invention

[0004] The purpose of this invention is to provide a method for quick on-site fabrication of wire connectors that can be installed directly without special treatment of the cable shielding layer, thereby reducing wiring difficulty and improving installation efficiency.

[0005] The objective of this invention and the technical problem it solves are achieved by the following technical solution. According to this invention, a field-mounted quick-connect wire connector includes a housing component. The housing component includes a front housing and a rear housing connected to the rear end of the front housing. An insulator is provided inside the front housing, and a contact component is provided inside the insulator. A shielding spring is provided at the front end of the front housing, and a shielding ring is provided at the rear end of the front housing. A clamping ring is provided inside the rear housing, and the clamping ring can rotate along an axis within the rear housing. An axial stop structure is provided inside the rear housing. The axial stop structure is used to push the clamping ring and press the cable shielding layer onto the shielding ring. The cable shielding layer can be directly pressed onto the shielding ring without special treatment, achieving shielded contact and conductivity with the housing component.

[0006] Furthermore, the insulator contains a cavity for accommodating the wire clamping spring and the wire clamping wrench. An opening at the rear end of the cavity allows cable insertion. The wire clamping spring is rotatably mounted on the insulator via a first shaft. One end of the wire clamping spring has a clamping portion, and the other end has a force-receiving portion. The wire clamping wrench is hinged to the insulator via a second shaft. One end of the wire clamping wrench has an operating portion, and the other end has a force-applying portion. The operating portion drives the wire clamping wrench to rotate. When the wire clamping wrench rotates forward, the force-applying portion pushes against the force-receiving portion of the wire clamping spring, causing the clamping portion of the wire clamping spring to press the cable core onto the contact component.

[0007] Furthermore, both the shielding spring and the shielding ring are annular.

[0008] Furthermore, the clamping ring and the shielding ring are coaxially arranged.

[0009] Furthermore, the shielding ring has a conical surface that contacts and engages with the cable shielding layer.

[0010] Furthermore, the contact component includes a plug and a terminal piece disposed at the rear end of the plug. The plug is used to engage with a corresponding contact in the adapter connector, and the terminal piece is used to make contact with the wire core in the cable and extend into the cavity.

[0011] Furthermore, the connector is provided with a groove, which is used to improve the holding force between the connector and the wire core after the wire is pressed.

[0012] Furthermore, the front end face of the clamping ring is provided with an anti-rotation groove, which is used to radially prevent rotation with the anti-rotation platform provided on the front housing.

[0013] Furthermore, the inner cavity of the rear housing and one of the clamping rings are provided with a limiting groove, and the other is provided with a radial protrusion. The limiting groove and the radial protrusion constitute the axial stop structure.

[0014] Furthermore, the wire clamp is provided with a latch, and the insulator is provided with a corresponding buckle; when the wire clamp is pressed in the forward direction, the latch and the buckle lock together to achieve the positioning of the wire clamp in the locked position.

[0015] Furthermore, the latch is located within a hole opened in the operating part.

[0016] Furthermore, a protective cover is provided above the wire crimping wrench to prevent the shielding wires of the cable shielding layer from extending into the cavity through the gap between the wire crimping wrench and the insulator.

[0017] Furthermore, the insulator is also provided with a limiting surface facing the pressure spring, which is used to limit the installation position of the pressure spring and to support and guide it during the rotation of the pressure spring.

[0018] Furthermore, a support member is provided on the inner side of the wire clamping spring, which is used to provide a supporting elastic force for the wire clamping spring to move the wire clamping part away from the connector.

[0019] Furthermore, the support is an S-shaped metal spring, one end of which is hung on the insulator via a third shaft, and the other end of which acts on the wire-pressing spring, causing the wire-pressing portion of the spring to tend to move away from the cable direction. Alternatively, the support is a torsion spring, the force-applying end of which acts on the inner wall of the wire-pressing spring, causing the wire-pressing portion of the spring to tend to move away from the cable direction.

[0020] By employing the above technical solution, this invention enables rapid wire crimping and connection of cables and contact components on-site. Through the coaxially arranged crimping ring and shielding ring, shielding connection can be completed without trimming the cable shielding layer. Furthermore, the overall structure of this invention is a circular connector product, possessing a small size and significantly saving installation space for upstream equipment.

[0021] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of a field-mounted wire connector for rapid fabrication according to the present invention.

[0023] Figure 2 This is a schematic diagram of a clamping ring for quick on-site fabrication of wire connectors according to the present invention.

[0024] Figure 3 This is a side view of the structure of a field-mounted quick-fabrication wire connector according to the present invention.

[0025] Figure 4 This is a schematic diagram of the internal structure of a field-mounted wire connector according to the present invention.

[0026] Figure 5 This is a schematic diagram of a shielding ring in a field-mounted wire connector according to the present invention.

[0027] Figure 6 This is a schematic diagram of the contact components in a field-produced wire connector according to the present invention.

[0028] Figure 7 This is a schematic diagram of the structure of a field-mounted wire connector without crimping, according to the present invention. Detailed Implementation

[0029] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments.

[0030] like Figures 1 to 7 As shown, a field-made wire connector has its front end as a mating end for mating with an adapter connector. The field-made wire connector includes a contact component 1, a front housing 2, a rear housing 3, an insulator 4, a wire clamping spring 5, and a wire clamping wrench 6.

[0031] Both the front housing 2 and the rear housing 3 are circular shells, and they are connected by threads to form the outer shell of the electrical connector, providing sealing and protection for the internal parts. The contact component 1 is disposed within the insulator 4, which is fixed within the front housing 2. The contact component 1 includes a plug 11 located at the front end of the connector and a terminal block 12 located at the rear end of the plug. The contact component 1 is made of conductive material. The plug 11 can be a socket or a pin, used for mating with the corresponding contact in the adapter connector. The terminal block 12 is used to make contact with the wire core 71 inside the cable 7. Preferably, the terminal block 12 has evenly distributed grooves 121, which can extend perpendicular to the front-to-back direction. The grooves 121 increase the friction between the terminal block and the wire core, thereby improving the cable retention force after the clamping spring clamps the wire and preventing the cable from being pulled out.

[0032] A ring-shaped shielding spring 9 is provided on the outer circumferential surface of the front end of the front housing 2. The shielding spring 9 is used for shielding connection with the mating connector housing of the mating end. A connecting cap 20 is fitted on the front end of the front housing 2 for locking with the mating connector housing. After mating and locking, the connector housings achieve shielded conduction through the shielding spring. Furthermore, the rear end of the front housing 2 has a shielding ring 21, which is used to connect the cable shielding layer of the cable 7. Specifically, the shielding ring 21 is an arc-shaped conical structure formed by chamfering the rear end of the front housing 2, and the conical surface 211 on the shielding ring can increase the contact area with the cable shielding layer. The shielding ring 21 can be a circumferentially closed complete ring structure or a circumferentially open ring structure, such as a semi-circular ring. Since both the shielding spring and the shielding ring are ring-shaped, they not only have a circumferentially distributed shielding effect, but the front housing and the rear housing can also be designed as compatible circular housings, which is conducive to the miniaturization of the connector size.

[0033] A clamping ring 8 is provided inside the rear housing 3, which can rotate freely along the axis within the rear housing. An axial stop structure is provided inside the rear housing 3. This axial stop structure pushes the clamping ring 8 forward, pressing the cable shielding layer against the shielding ring 21 of the front housing during the connection of the front and rear housings. This achieves conductivity between the cable shielding layer and the outer casing components, forming good electromagnetic protection and short-circuit protection. Furthermore, because the rear housing 3 and the clamping ring 8 can rotate relative to each other during this process, damage to the cable shielding layer caused by friction and pulling during the rotation of the rear housing is avoided, thus ensuring the overall shielding performance of the product. In this embodiment, the clamping ring 8 and the shielding ring 21 are coaxially arranged. Since the front housing 2 is a conductive structure, the cable shielding layer can easily achieve stable shielding conductivity with the outer casing components after contacting the shielding ring.

[0034] like Figure 2 The front end face of the clamping ring 8 is provided with an anti-rotation groove 81 along the circumferential direction, which corresponds to the anti-rotation platform 22 provided on the front housing 2. When the cable shielding layer is clamped, the clamping ring 8 stops rotating due to the radial obstruction of the anti-rotation groove 81 by the anti-rotation platform 22, thereby preventing damage to the cable shielding layer caused by the continued rotation of the clamping ring 8 after the cable shielding layer is clamped. Figure 3 The inner cavity of the rear housing 3 and one of the clamping rings 8 are provided with a limiting groove 31, and the other is provided with a radial protrusion 82. The limiting groove and the radial protrusion form the axial stop structure described above. The radial protrusion 82 is forcibly installed into the limiting groove 31, thereby axially limiting the clamping ring, preventing the clamping ring from falling out of the rear housing, and allowing the rear housing 3 and the clamping ring 8 to rotate relative to each other.

[0035] The insulator 4 has a cavity 41. The cavity 41 serves two purposes: firstly, it accommodates the wire clamping spring 5 and the wire clamping wrench 6; secondly, it allows a suitable cable to pass through and be clamped to the contact component, thus making the cavity 41 a wire clamping chamber. The rear end of the cavity 41 has an opening 42 for cable insertion. In this embodiment, the wire clamping spring 5 is rotatably mounted within the insulator 4 via a first shaft 50. One end of the wire clamping spring 5 has a wire clamping portion 51, and the other end has a force-receiving portion 52. Furthermore, the insulator also has a limiting surface 43 facing the wire clamping spring. This limiting surface effectively restricts the installation position of the wire clamping spring and also provides support and guidance during the rotation of the wire clamping spring. In other words, the limiting surface 43 and the first shaft 50 work together to limit the installation of the wire clamping spring and provide support and guidance during the wire clamping process. The wire clamping wrench 6 is located on the upper side of the wire clamping spring. The wire clamping wrench 6 is hinged to the insulator 4 via the second shaft 60. One end of the wire clamping wrench 6 has an operating part 61, and the other end has a force-applying part 62. The operating part 61 is operated by a person to drive the wire clamping wrench to rotate around the second shaft. When the wire clamping wrench is rotated in the forward direction ( Figure 7(As shown, rotating clockwise), the force-applying part 62 pushes the force-receiving part 52 of the wire-pressing spring, and the wire-pressing part 51 of the wire-pressing spring presses the corresponding cable core 71 onto the connector 12 at the rear end of the contact component. The connector 12 extends into the cavity 41. During this wire-pressing operation, the rotation direction of the wire-pressing wrench is opposite to the rotation direction of the wire-pressing spring. When the wire-pressing wrench 6 is locked, it can restrict the rotation of the wire-pressing spring 5 around its first axis, so that the wire-pressing spring can reliably press the cable 7 by its own elasticity. The locking and positioning of the wire-pressing wrench 6 is achieved by the interlocking of the latch 63 provided on it and the corresponding buckle 44 provided on the insulator 4. That is, when the wire-pressing wrench is pressed in the forward direction, the wire-pressing wrench can be reliably locked without loosening. In this embodiment, the latch 63 is provided in the hole 611 opened on the operating part 61 and does not occupy additional space.

[0036] like Figure 5 Inside the housing of the electrical connector, a protective cover 10 is provided above the crimping wrench. The protective cover 10 prevents the shielding wires of the cable shielding layer from extending into the cavity 41 through the gap between the crimping wrench and the insulator, thus preventing a short circuit. The protective cover 10 can be hinged to the insulator 4. When the protective cover 10 is in the closed state, it effectively covers the crimping wrench and prevents accidental locking caused by external contact. Furthermore, due to the protective cover, the shielding ring has an incomplete circumferential arc shape.

[0037] As a further optimization, a support member 13 is provided inside the wire clamping spring 5. The support member 13 can be an elastic element such as a metal spring or a torsion spring, which can provide support and elastic force to keep the clamping part away from the connector in a free state. When the clamping wrench is lifted, the clamping spring is also lifted by the support member, facilitating cable insertion. Specifically, in this embodiment, the support member is an S-shaped metal spring. One end of the metal spring is hung on the insulator 4 through a third shaft 130, and the other end of the metal spring acts on the wire clamping spring 5, applying a certain force to the clamping spring so that the clamping spring always has a tendency to rotate in the positive direction, so that the clamping spring no longer clamps the cable after the clamping wrench is lifted. Similarly, if the support member is a torsion spring, the torsion spring needs to be assembled on the insulator through a corresponding mounting shaft, and the force-applying end of the torsion spring acts on the inner wall of the clamping spring, so that the clamping spring has a tendency to move away from the direction of the cable.

[0038] The wiring process for a quick on-site wire connector according to this invention is as follows: Lift the protective cover and wire clamp, insert the stripped cable into the cavity of the insulator, then press and lock the wire clamp. At this point, the latch and buckle engage to keep the wire clamp in the locked position, and the wire clamping spring presses the cable, ensuring stable contact between the cable core and the connector. Then, lower the protective cover to complete the wire clamping operation. The cable shield does not need to be trimmed; simply flip it onto the shielding ring at the rear end of the front housing. Install the rear housing and engage the clamping ring to tighten the cable shield, thus completing the entire wiring process.

[0039] The above description is merely a preferred embodiment of the present invention. Any simple modifications, equivalent changes, and alterations made by those skilled in the art to the above embodiments without departing from the scope of the present invention and based on the technical essence of the present invention shall still fall within the scope of the present invention.

Claims

1. A field-mounted quick-make wire connector, comprising a housing component, the housing component including a front housing and a rear housing connected to the rear end of the front housing, an insulator disposed within the front housing, and a contact component disposed within the insulator, characterized in that: The front end of the front housing is equipped with a shielding spring. The rear end of the front housing is chamfered to form a shielding ring with a conical surface that contacts and engages with the cable shielding layer. The rear housing is equipped with a clamping ring that can rotate along the axis within the rear housing. The rear housing is equipped with an axial stop structure that pushes the clamping ring and presses the cable shielding layer onto the shielding ring.

2. The field-mounted quick-fabrication wire connector according to claim 1, characterized in that: The insulator contains a cavity for accommodating a wire clamping spring and a wire clamping wrench. An opening at the rear of the cavity allows cable insertion. The wire clamping spring is rotatably mounted on the insulator via a first shaft. One end of the wire clamping spring has a clamping portion, and the other end has a force-receiving portion. The wire clamping wrench is mounted on the insulator via a second shaft. One end of the wire clamping wrench has an operating portion, and the other end has a force-applying portion. The operating portion drives the wire clamping wrench to rotate. When the wire clamping wrench rotates forward, the force-applying portion pushes against the force-receiving portion of the wire clamping spring, causing the clamping portion of the wire clamping spring to press the cable core onto the contact component.

3. The field-mounted quick-fabrication wire connector according to claim 2, characterized in that: Both the shielding spring and the shielding ring are annular.

4. The field-mounted quick-fabrication wire connector according to claim 3, characterized in that: The clamping ring and the shielding ring are coaxially arranged.

5. A field-mounted quick-fabrication wire connector according to claim 2, characterized in that: The contact component includes a plug and a terminal piece located at the rear end of the plug. The plug is used to engage with a corresponding contact in the adapter connector, and the terminal piece is used to make contact with the wire core in the cable and extend into the cavity.

6. A field-mounted quick-fabrication wire connector according to claim 5, characterized in that: The connector has a groove, which is used to improve the holding force between the connector and the wire core after the wire is pressed.

7. A field-mounted quick-fabrication wire connector according to claim 1, characterized in that: The front end face of the clamping ring is provided with an anti-rotation groove, which is used to radially prevent rotation with the anti-rotation platform provided on the front housing.

8. A field-mounted quick-fabrication wire connector according to claim 1, characterized in that: The inner cavity of the rear housing and one of the clamping rings are provided with a limiting groove, and the other is provided with a radial protrusion. The limiting groove and the radial protrusion constitute the axial stop structure.

9. A field-mounted quick-fabrication wire connector according to claim 2, characterized in that: The wire clamp is equipped with a latch, and the insulator is equipped with a corresponding buckle; when the wire clamp is pressed in the forward direction, the latch and the buckle lock together to achieve the positioning of the wire clamp in the locked position.

10. A field-mounted quick-fabrication wire connector according to claim 9, characterized in that: The latch is located in a hole on the operating part.

11. A field-mounted quick-fabrication wire connector according to claim 2, characterized in that: The wire crimping wrench is equipped with a protective cover above it. The protective cover is used to prevent the shielding wire of the cable shielding layer from extending into the cavity through the gap between the wire crimping wrench and the insulator.

12. A field-mounted quick-fabrication wire connector according to claim 2, characterized in that: The insulator is also provided with a limiting surface facing the pressure spring, which is used to limit the installation position of the pressure spring and to support and guide it during the rotation of the pressure spring.

13. A field-mounted quick-fabrication wire connector according to claim 5, characterized in that: A support member is provided on the inner side of the wire clamping spring. The support member is used to provide a supporting elastic force for the wire clamping spring to move the wire clamping part away from the terminal piece.

14. A field-mounted quick-fabrication wire connector according to claim 13, characterized in that: The support is an S-shaped metal spring. One end of the metal spring is hung on the insulator via a third shaft, and the other end of the metal spring acts on the wire clamping spring, causing the wire clamping part of the wire clamping spring to have a tendency to move away from the direction of the cable.

15. A field-mounted quick-fabrication wire connector according to claim 13, characterized in that: The support is a torsion spring. The force-applying end of the torsion spring acts on the inner wall of the wire clamping spring, causing the wire clamping part of the wire clamping spring to have a tendency to move away from the direction of the cable.

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