Shielded cable connector

Abstract

The utility model provides a kind of shielded cable connector, the connector includes cable with core wire and cable shield layer, the front end of cable is equipped with plug, plug includes plug shell, at least part is installed in the sleeve of plug shell, insulator is equipped in the sleeve, and contact piece is installed on the insulator, the front end of contact piece is plug-in end, rear end is electrically connected with the core wire, the rear end of sleeve is equipped with tail cover, installation slot is equipped on the inner wall of tail cover, shield ring is equipped in installation slot, shield ring is equipped in the outer periphery of sleeve, cable shield layer can be limited between sleeve and shield ring, by crimping to the part of shield ring and tail cover and shield ring coincide, cable shield layer can be electrically connected with sleeve.The connector can match multiple wire diameter, simplify shield crimping process, adapt to the goal of automation production, effectively reduce product cost, greatly improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of cable connector technology, and in particular to a shielded cable connector, which is widely used in the fields of industrial robots and sensors to enable signal transmission. Background Technology

[0002] In today's rapidly developing industrial automation landscape, industrial robots and sensors are widely used across various fields. Among these devices, accurate and stable signal transmission is crucial for the normal operation of the system, and connectors, as key components for signal transmission, directly impact the reliability of the entire system.

[0003] Existing shielded cable connectors have many problems in practical applications. On the one hand, cables with different outer diameters need to be matched with specific connector tail sleeves, or the wire diameter can be increased by wrapping insulating tape 11 around the outer diameter of the cable to fit the tail sleeve 14 (e.g., Figure 3 (As shown). This method is not only cumbersome to operate and requires high skill levels from operators, but also increases production time and costs. On the other hand, after completing the wire diameter matching, the shielding wire 12 is folded outward onto the cable sheath, and the shielding wire clamping ring 13 is installed. Then, a hexagonal crimping is performed in the B crimping area of ​​the tail sleeve 14 to ensure shielding conductivity. This process requires extremely high matching accuracy between the connector and the cable. If the matching is improper, it may lead to poor shielding conductivity and affect the stability of signal transmission.

[0004] In addition, while some existing connectors can accommodate various wire diameters, they often have complex shielding structures and a wide variety of parts. This not only increases production costs but also makes automated production difficult, failing to meet the demands of modern manufacturing for efficient and low-cost production.

[0005] Therefore, developing a connector structure with fewer component types, compatibility with multiple wire diameters, suitability for automated production, and improved wire-making efficiency has become an urgent need for the industry. Utility Model Content

[0006] In view of this, the present invention aims to provide an innovative shielded cable connector that overcomes the shortcomings of the prior art, achieves the goals of matching multiple wire diameters, simplifying the shielding crimping process, and adapting to automated production, effectively reducing product costs, significantly improving production efficiency, and meeting the growing demand for high-performance connectors in the fields of industrial robots and sensors.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0008] A shielded cable connector includes a cable with a core wire and a cable shielding layer. The cable has a plug at its front end. The plug includes a plug housing, a sleeve at least partially installed in the plug housing, an insulator disposed in the sleeve, and a contact mounted on the insulator. The front end of the contact is a plug-in end, and the rear end is electrically connected to the core wire. The rear end of the sleeve has a tail cap. The inner wall of the tail cap has a mounting groove. A shielding ring is disposed in the mounting groove. The shielding ring is sleeved on the outer periphery of the sleeve. The cable shielding layer folded to the outer periphery of the tail end of the sleeve can be confined between the sleeve and the shielding ring. By crimping the parts of the shielding ring and the tail cap that overlap with the shielding ring, the cable shielding layer can be electrically connected to the sleeve.

[0009] Furthermore, the sleeve contains a potting compound formed between the contact and the cable to securely wrap the connection between the contact and the core wire, thereby fixing the contact and the cable end together.

[0010] Furthermore, the sleeve has a glue-filling hole on its side wall, through which glue is poured into the sleeve to form a potting body.

[0011] Furthermore, it also includes a rubber ring, which is interference-fitted onto the contact element.

[0012] Furthermore, the inner wall of the sleeve is provided with a limiting protrusion, which, in conjunction with the insulator, can axially limit the rubber ring.

[0013] Furthermore, the front end of the potting compound extends to the rear end of the rubber ring, and the rear end extends to connect with the cable shielding layer.

[0014] Furthermore, the outer circumferential surface of the sleeve is provided with a limiting step for limiting the position of the plug housing.

[0015] Furthermore, an anti-detachment structure is provided between the inner wall of the sleeve and the insulator to prevent the insulator from detaching forward.

[0016] Furthermore, the rear end of the sleeve is provided with a tapered step, which can cooperate with the shielding ring to achieve reliable compression of the cable shielding layer.

[0017] Furthermore, the tail cap is pushed from back to front and assembled onto the outside of the sleeve.

[0018] Beneficial effects:

[0019] As described above, the shielded cable connector of this utility model has the following beneficial effects:

[0020] (1) The connector of this utility model can accommodate cables of different outer diameters through the cooperation of the sleeve, shielding ring and tail cap, and has good compatibility between the sleeve and the cable. Unlike the traditional method, there is no need to replace a specific tail sleeve or wrap insulating tape, which greatly improves the connector's adaptability to different cables. In the field of industrial robots and sensors, various shielded cables of different diameters may be used in the equipment. Using the connector of this utility model, these cables can be easily adapted, reducing production delays and cost increases caused by cable compatibility issues, and improving production flexibility and efficiency.

[0021] (2) By crimping the parts of the shielding ring and the end cap that overlap with the shielding ring, the cable shielding layer and the sleeve are electrically connected. This crimping connection method can ensure the stability of the shielding connection and effectively reduce signal interference caused by poor shielding conductivity.

[0022] (3) The potting compound inside the sleeve secures the contacts and the cable tip together, enhancing the stability of the connection. When industrial robots and sensors are working, they may be subjected to external forces such as vibration and impact. The potting compound can effectively buffer these external forces and prevent the connection between the contacts and the core wire from loosening. For example, in scenarios where industrial robots move frequently, the potting compound can ensure that the connector connection will not be interrupted due to vibration, ensuring the continuity of signal transmission and improving the stability of equipment operation.

[0023] (4) The sleeve has a glue-filling hole on its side wall. Glue is poured into the sleeve through the glue-filling hole to form a potting compound. This glue-filling method is simple and convenient to operate. During the production process, the glue-filling hole allows for precise control of the glue-filling amount and position, ensuring that the potting compound evenly fills the cavity inside the sleeve and improving the potting quality. Compared with traditional glue-filling methods, this simplifies the glue-filling operation process, reduces product quality problems caused by improper glue-filling, and improves production efficiency.

[0024] (5) The connector of this utility model has a simple overall structure design, fewer types of parts, and simple and standardized installation methods for each component. For example, the design of pushing the tail cover from back to front to assemble it to the outside of the sleeve is very suitable for automated assembly, which greatly improves production efficiency and reduces labor costs. At the same time, the simple structure also reduces raw material costs and scrap rate in the production process, further reducing product costs and improving the market competitiveness of the product.

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the shielded cable connector in this utility model.

[0028] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0029] Figure 3 This is a schematic diagram of the structure of a connector in the prior art.

[0030] The diagram shows the following markings: 1. Plug housing; 2. Sleeve; 201. Limiting step; 202. Potting hole; 203. Limiting protrusion; 204. Conical step; 3. Tail cap; 301. Mounting groove; 4. Shielding ring; 5. Cable; 501. Cable shielding layer; 6. Potting body; 7. Rubber ring; 8. Contact element; 9. Insulator.

[0031] 11. Insulating tape; 12. Shielding wire; 13. Shielding wire retaining ring; 14. Tail sleeve.

[0032] Both points B and C refer to the crimping area. Detailed Implementation

[0033] The shielded cable connector of this utility model mainly consists of two parts: the cable 5 and the plug. Please refer to... Figure 1 and Figure 2 The cable 5 includes a core wire and a cable shielding layer 501, while the plug consists of a plug housing 1, a sleeve 2, an insulator 9, a contact 8, a tail cap 3, a shielding ring 4, a rubber ring 7 (optional), and a potting compound 6 (formed by potting). These components work together to achieve the connector's shielding, sealing, and signal transmission functions. The structure of each part is described in detail below.

[0034] The plug includes a plug housing 1, and a sleeve 2 is at least partially installed inside the plug housing 1, with an insulator 9 installed inside. Contacts 8 are mounted on the insulator 9. The front end of the contact 8 is used to connect to a socket for signal input and output; the rear end is electrically connected to the core wire of the cable 5 to ensure stable signal transmission within the connector. The inner wall of the sleeve 2 mates with the insulator 9, and an anti-detachment structure ensures that the insulator 9 is precisely fixed within the sleeve 2, preventing displacement during use. The insulator 9 is made of a material with good insulation properties and a certain mechanical strength, such as polycarbonate or nylon. It not only fixes the contacts 8, maintaining a stable position, but also effectively prevents electrical short circuits between contacts 8 and between contacts 8 and other components, ensuring accurate signal transmission.

[0035] Specifically, the anti-disengagement structure between the inner wall of the sleeve 2 and the insulator 9 can be a protrusion on the inner wall of the sleeve 2 that cooperates with a corresponding groove on the insulator 9, or it can be a snap-fit ​​or slotted structure. These anti-disengagement structures can effectively restrict the movement of the insulator 9, ensuring that even if it is subjected to external pulling or vibration during the use of the connector, the insulator 9 can remain in the correct position, ensuring the stability of the contact 8 and thus ensuring the reliability of signal transmission.

[0036] The front end of cable 5 is installed inside sleeve 2. The diameter of cable 5 is such that it can be inserted into sleeve 2, indicating that the connector of this utility model can match cables 5 of different diameters. A tail cap 3 is provided at the rear end of sleeve 2. The tail cap 3 can be designed separately from the plug housing 1 for easy adaptation to complex installation scenarios or later maintenance and replacement, or it can be designed integrally with the plug housing 1 to enhance the overall structural strength and sealing performance, and reduce assembly steps. An installation groove 301 is provided on the inner wall of the tail cap 3. A shielding ring 4 is installed in the installation groove 301. The shielding ring 4 is sleeved on the outer circumference of sleeve 2. The shielding ring 4 can limit the cable shielding layer 501 that flips outward to the outer circumference of the tail end of sleeve 2, ensuring that it is always between the shielding ring 4 and sleeve 2. When connecting cable 5, the cable shielding layer 501 is folded outward from one side between the sleeve 2 and the shielding ring 4. Then, the overlapping parts of the shielding ring 4 and the tail cap 3 are crimped together, using suitable crimping processes such as cold pressing or hydraulic pressing, to achieve a reliable conductive connection between the cable shielding layer 501 and the sleeve 2. The shielding ring 4 is made of a metal material with excellent conductivity, such as copper alloy or aluminum alloy, which can effectively shield external electromagnetic interference and ensure the stability of signal transmission. The tail cap 3 serves to protect internal components and fix the shielding ring 4. Its material can be metal, such as aluminum alloy, which has high strength and corrosion resistance.

[0037] The sleeve 2 has a potting hole 202 on its side wall. Potting compound is injected into the sleeve 2 through this hole, and after curing, it forms a potting body 6. The potting body 6 firmly connects the contact 8 and the front end of the cable 5 together, serving a dual function of fixing and sealing. On one hand, it enhances the stability of the connection between the contact 8 and the cable 5, preventing loosening due to vibration, impact, or other external forces during equipment operation. On the other hand, the potting body 6 fills the gaps inside the sleeve 2, effectively preventing external moisture, dust, impurities, etc., from entering the connector, avoiding interference with signal transmission, and ensuring the stability of the internal environment of the connector.

[0038] The rubber ring 7 is not an essential component of the connector, but it plays a crucial role when holes and gaps exist on the contact 8 due to manufacturing processes or automated assembly. The rubber ring 7 is interference-fitted onto the contact 8, fitting tightly against it and using its elastic deformation to seal these holes and gaps. During potting, the rubber ring 7 effectively prevents the adhesive from flowing into the contact 8, avoiding any impact on the electrical performance of the contact 8 and ensuring its normal operation. The rubber ring 7 is generally made of rubber materials, such as nitrile rubber or fluororubber. These rubber materials possess good elasticity, sealing performance, and chemical stability, maintaining a good sealing effect under various operating environments.

[0039] The inner wall of the sleeve 2 is provided with a limiting protrusion 203, which has a forward-facing stop surface. The rear end face of the rubber ring 7 corresponds to this stop surface. The cooperation between the limiting protrusion 203 and the insulator 9 can effectively prevent the rubber ring 7 from moving axially, ensuring that the rubber ring 7 is always in the correct position and effectively exerts its sealing function. The outer circumferential surface of the sleeve 2 is provided with a limiting step 201 for limiting the plug housing 1. When the plug housing 1 is installed on the sleeve 2, the installation position of the plug housing 1 can be accurately determined by cooperating with the limiting step 201, ensuring the stability of the overall plug structure, and also facilitating assembly operations during production. In addition, the rear end of the sleeve 2 is provided with a tapered step 204, which can cooperate with the shielding ring 4. During the crimping process, the shielding ring 4 can better press the cable shielding layer 501, enhance the conductive connection effect between the shielding layer and the sleeve 2, further improve the shielding performance, and reduce signal interference.

[0040] Because the shielding ring 4 is relatively thin, it can be deformed and inserted into the mounting groove 301 inside the tail cap 3. The tail cap 3 with the shielding ring 4 is then pushed from back to front to assemble onto the outside of the sleeve 2. This installation method is simple and convenient, making it very suitable for automated assembly. On automated production lines, the tail cap 3 can be quickly and accurately installed onto the sleeve 2 using specialized assembly equipment, improving production efficiency and reducing labor costs. At the same time, this installation method ensures a tight connection between the tail cap 3 and the sleeve 2, guaranteeing accurate relative positioning between the shielding ring 4, the sleeve 2, and the cable shielding layer 501, thus contributing to a good shielding effect.

[0041] The shielded cable connector provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and specific implementation of this utility model. The above embodiments are only used to help understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model fall within the protection scope of this utility model.

Claims

1. A shielded cable connector, characterized in that, The cable (5) includes a core wire and a cable shield (501). The front end of the cable (5) is provided with a plug. The plug includes a plug housing (1), a sleeve (2) at least partially installed in the plug housing (1), an insulator (9) provided in the sleeve (2), and a contact (8) installed on the insulator (9). The front end of the cable (5) is installed in the sleeve (2). The front end of the contact (8) is a plug end, and the rear end is electrically connected to the core wire. The rear end of the sleeve (2) is provided with a tail cap. (3) The inner wall of the tail cap (3) is provided with an installation groove (301), and a shielding ring (4) is provided in the installation groove (301). The shielding ring (4) is sleeved on the outer periphery of the sleeve (2). The cable shielding layer (501) folded to the outer periphery of the tail of the sleeve (2) can be limited between the sleeve (2) and the shielding ring (4). By pressing the parts of the shielding ring (4) and the tail cap (3) that overlap with the shielding ring (4), the cable shielding layer (501) and the sleeve (2) can be electrically connected.

2. The shielded cable connector according to claim 1, characterized in that, The sleeve (2) is formed by potting between the contact (8) and the cable (5) to form a potting body (6) for fixing the connection between the contact (8) and the core wire. The potting body (6) fixes the contact (8) and the front end of the cable (5) together.

3. A shielded cable connector according to claim 2, characterized in that, The sleeve (2) has a glue-filling hole (202) on its side wall. Glue is poured into the sleeve (2) through the glue-filling hole (202) to form a potting body (6).

4. A shielded cable connector according to claim 2, characterized in that, It also includes a rubber ring (7), which is interference-fitted onto the contact (8).

5. A shielded cable connector according to claim 4, characterized in that, The inner wall of the sleeve (2) is provided with a limiting protrusion (203), which, together with the insulator (9), can axially limit the rubber ring (7).

6. A shielded cable connector according to claim 5, characterized in that, The front end of the potting compound (6) extends to the rear end of the rubber ring (7), and the rear end extends to connect with the cable shielding layer (501).

7. A shielded cable connector according to claim 1, characterized in that, The outer circumferential surface of the sleeve (2) is provided with a limiting step (201) for limiting the plug housing (1).

8. A shielded cable connector according to claim 1, characterized in that, The sleeve (2) has an anti-detachment structure between its inner wall and the insulator (9) to prevent the insulator (9) from detaching forward.

9. A shielded cable connector according to claim 1, characterized in that, The sleeve (2) has a tapered step (204) at its rear end, which can cooperate with the shielding ring (4) to reliably press the cable shielding layer (501).

10. A shielded cable connector according to claim 1, characterized in that, The tail cap (3) is pushed from back to front and assembled to the outside of the sleeve (2).

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