Sealed cable connector

Abstract

The invention relates to the technical field of cable connection, in particular to a sealed cable connector. The connector comprises a connector body, the connector body comprises a first combined pipe and a second combined pipe, the first combined pipe and the second combined pipe are symmetrically spliced and installed, and electrical connecting rings are arranged in the mutually attached ends of the first combined pipe and the second combined pipe. Through the gap changing mechanism, inner diameter adjusting operation can be carried out on the middle position of the cable channel, in the industrial environment, when the cable needs to be stretched, the preset bending position can bear tensile force firstly and carry out moderate tensile deformation, the tensile force originally directly applied to a cable main body is relieved, and therefore the tensile strength of the cable is improved. The tensile force is reduced to directly act on the cable without buffering, the stability of connection at the joint of the two cables is practically guaranteed, and the occurrence of bad conditions such as cable joint loosening and sealing failure caused by tensile force impact is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of cable connection, and more specifically, to a sealed cable connector. Background Art

[0002] At present, with the booming development of industrial automation production, cables are widely used and crucial in industrial networks. As a key carrier for signal and power transmission in industrial networks, cables affect the operation reliability and production accuracy of automated processing equipment. In the field of industrial production, especially in application scenarios such as robotic arms that require frequent bending and winding movements, the connection and layout of cables are often involved. When two cables are directly fixed to the surface of a robotic arm through a conventional connector at the connection point, due to the complexity and high intensity of the robotic arm's movements, during its operation, the tensile force generated by the bending action will directly act on the cable connection part. This tensile situation is extremely likely to damage the tightness of the connection between the cables, gradually loosening the originally good connection state, and then affecting the original sealed state at the cable connection, increasing potential hazards such as water ingress and dust ingress, threatening the normal electrical performance of the cables as well as the overall use safety and lifespan. However, if a certain stretchable position is simply reserved during cable installation, it will lead to an unstable fixation of the cable on the surface of the manipulator. For example, during the frequent movement of the manipulator, the cable will shift and sway. The unstable fixation is likely to cause loosening between the cable and the connector, and the originally tightly fitting and sealed structure is damaged, which is also not conducive to the stable operation of the equipment and the normal functioning of the cable. In view of this, there is an urgent need for a sealed cable connector to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a sealed cable connector to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides a sealed cable connector, including a connector body. The connector body includes a first joint pipe and a second joint pipe, and is characterized in that: cable channels are respectively opened inside the first joint pipe and the second joint pipe for placing cables. The first joint pipe and the second joint pipe are spliced and installed, and the first joint pipe and the second joint pipe are symmetrically arranged. Electrical connection rings are respectively arranged inside the fitting ends of the first joint pipe and the second joint pipe. The first joint pipe and the second joint pipe are butt - fixed through a connection mechanism. A variable gap mechanism is provided in the middle of both the first pipe combination and the second pipe combination. The variable gap mechanism includes a variable gap component, which divides the middle position of the cable channel to form a meandering cavity. When the cable is in normal use, the middle end of the cable is clamped inside the meandering cavity in the connector body. When the cable is stretched during use, the pulling force on the cable can force the variable gap component to slide, driving the cable in the meandering cavity to stretch, alleviating the pulling force applied to the cable surface. At the same time, the meandering cavity can also construct a complex path inside the cable channel; Both the first pipe combination and the second pipe combination are composed of a first half-pipe and a second half-pipe. The first half-pipe and the second half-pipe have the same shape. The variable gap mechanism further includes a bottom groove, which is opened at the bottom end of the middle of the cable channel. The variable gap component includes a variable gap convex block, and a support component is fixedly installed at the bottom of the variable gap convex block. The support component includes a movable block fixedly connected to the bottom of the variable gap convex block, and the movable block slides inside the fixed component.

[0005] As a further improvement of this technical solution, semi-pipe fixing rings are provided on the surfaces of the ends of the first half-pipe and the second half-pipe away from the electrical connection ring. The first half-pipe and the second half-pipe are fixedly connected by a semi-pipe fixing ring, and the semi-pipe fixing ring is threadedly connected to the surface of the semi-pipe fixing ring.

[0006] As a further improvement of this technical solution, the connection mechanism includes connection spiral channels provided on the surfaces of the first pipe combination and the second pipe combination. Both of the two connection spiral channels are provided at the ends of the first pipe combination and the second pipe combination close to the electrical connection ring, and a middle partition ring is threadedly installed on the surfaces of the two connection spiral channels.

[0007] As a further improvement of this technical solution, limit plates are fixedly installed on both sides of the end of the variable gap component close to the bottom groove, and the surfaces of the two limit plates are attached to the inner wall of the bottom groove.

[0008] As a further improvement of this technical solution, the bottom of the fixed component is fixedly connected to the bottom groove inside the second half-pipe, and the fixed component and the movable block are connected by an elastic component.

[0009] As a further improvement of this technical solution, a clamping component is provided on the inner wall of the meandering cavity, and the clamping component is made of an elastic material.

[0010] As a further improvement of this technical solution, two limit strips are fixedly installed on the surface of the variable gap convex block, and the cable is clamped and placed between the two limit strips.

[0011] As a further improvement of this technical solution, end tail sealing rings are provided inside the ends of the first pipe combination and the second pipe combination away from the electrical connection ring.

[0012] As a further improvement of the technical solution, the end tail sealing ring includes a clamping groove opened inside the first half pipe and the second half pipe. A fixed ring plate is fixedly installed in the clamping groove of the second half pipe. Two sets of roller groups are movably arranged inside the fixed ring plate. The two roller groups are arranged staggeredly, and each of the two roller groups is composed of a plurality of rollers connected together.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: In this sealed cable connector, during the cable connection operation process, the ends of the two cables to be connected are respectively stably clamped inside the inner chambers of the first combined pipe and the second combined pipe. The first combined pipe and the second combined pipe are sleeved and connected with the help of the middle partition ring. In combination with the middle partition ring, a double-layer nested structure is formed at the connection part of the first combined pipe and the second combined pipe, enhancing the stability and reliability of the first combined pipe and the second combined pipe, and improving the sealing performance at the connection of the two cables. Meanwhile, by using the variable gap mechanism arranged inside the first combined pipe and the second combined pipe, the inner diameter adjustment operation can be carried out on the middle position of the cable channel, so as to effectively bend and fix the cable. In an industrial environment, when the cable needs to be stretched, the pre-set bending position can bear the tensile force first and undergo appropriate tensile deformation, alleviating the tensile force directly applied to the cable body. In this way, it reduces the situation where the tensile force directly acts on the cable without buffering, effectively ensuring the stability of the connection at the two cable joints, and greatly reducing the occurrence of adverse conditions such as cable joint loosening and sealing failure caused by tensile force impact. In addition, by virtue of the variable gap mechanism arranged inside the first combined pipe and the second combined pipe, a relatively complex path structure can be constructed inside the cable channel. When external dust, moisture and other various pollutants attempt to invade the inside of the connector, the variable gap mechanism will greatly increase the difficulty for these pollutants to enter, thereby significantly improving the waterproof, dustproof and pollution-proof performance of the cable connection, and effectively ensuring the sealing integrity of the connection part. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the structural schematic diagram of the first combined pipe of the present invention; Figure 3 is the split structural schematic diagram of the first combined pipe and the second combined pipe of the present invention; Figure 4 is the internal structural schematic diagram of the first combined pipe and the second combined pipe of the present invention; Figure 5 is the structural schematic diagram of the cable placement when the present invention is in normal use; Figure 6 is the structural schematic diagram of the winding cavity when the cable of the present invention is stretched; Figure 7 Schematic diagram of the internal structure of the second pipe combination of the present invention; Figure 8 Schematic diagram of the splicing and installation structure of the first pipe combination and the second pipe combination of the present invention; Figure 9 Schematic diagram of the cable support structure of the variable gap member of the present invention; Figure 10 Schematic diagram of the split structure of the variable gap member of the present invention; Figure 11 Schematic diagram of the end tail seal ring structure of the present invention.

[0015] The meanings of each label in the figure are as follows: 1. Connector body; 10. Cable channel; 11. First pipe combination; 12. Second pipe combination; 13. Electrical connection ring; 14. First half pipe; 15. Second half pipe; 16. Half pipe fixing ring; 17. Half pipe fixing screw ring; 2. Connection mechanism; 21. Connection screw ring channel; 22. Middle partition ring; 3. Variable gap mechanism; 31. Bottom groove; 32. Variable gap member; 321. Variable gap convex block; 322. Support member; 323. Limiting plate; 33. Meandering cavity; 3221. Movable block; 3222. Fixed member; 3223. Elastic member; 4. Clamping member; 5. Limiting strip; 6. End tail seal ring; 61. Buckle groove; 62. Roller group; 63. Fixed ring plate. Specific embodiments

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0017] Embodiment, please refer to Figures 1-4As shown, the purpose of this embodiment is to provide a sealed cable connector, including a connector body 1. The connector body 1 includes a first joint tube 11 and a second joint tube 12. Cable channels 10 for placing cables are provided inside both the first joint tube 11 and the second joint tube 12. The first joint tube 11 and the second joint tube 12 are symmetrically spliced and installed. Electrical connection rings 13 are provided inside the mutually fitting ends of the first joint tube 11 and the second joint tube 12. The first joint tube 11 and the second joint tube 12 are butt-fixed through a connection mechanism 2. Variable gap mechanisms 3 are provided in the middle of both the first joint tube 11 and the second joint tube 12. The variable gap mechanism 3 includes a variable gap member 32. The variable gap member 32 divides the middle position of the cable channel 10 to form a meandering cavity 33. When the cable is in normal use, the middle end of the cable is clamped inside the meandering cavity 33 of the connector body 1. When the cable is stretched during use, the pulling force on the cable can force the variable gap member 32 to slide, driving the cable inside the meandering cavity 33 to stretch, and alleviating the pulling force applied to the surface of the cable.

[0018] Before the two cables are docked, the ends of the cables need to be installed on the connector body 1. In view of this, it is necessary to disclose the specific structures of the first joint tube 11 and the second joint tube 12. Both the first joint tube 11 and the second joint tube 12 are composed of a first half tube 14 and a second half tube 15. The first half tube 14 and the second half tube 15 have the same shape. Half tube fixing rings 17 are provided on the surfaces of the ends of the first half tube 14 and the second half tube 15 that are far from the electrical connection ring 13. The first half tube 14 and the second half tube 15 are thread-fixed through a half tube fixing ring 16. The half tube fixing ring 16 is thread-connected to the surface of the half tube fixing ring 17.

[0019] Refer to Figure 2 and Figure 7 As shown, both the first half tube 14 and the second half tube 15 are in a semi-circular tubular structure. Half tube fixing rings 17 are provided on their outer surfaces. When splicing, by rotatably sleeving the half tube fixing ring 16 over the surfaces of the two half tube fixing rings 17, the stable splicing and fixing of the first half tube 14 and the second half tube 15 can be achieved. During this process, it should be noted that: the first half tube 14 and the second half tube 15 must be spliced according to specific position and orientation requirements. If the splicing position is deviated, the half tube fixing ring 16 will not be able to smoothly sleeve on the surface of the half tube fixing ring 17. This method effectively improves the accuracy and stability of the docking process of the first half tube 14 and the second half tube 15, ensuring the reliability and safety of the entire structure during subsequent use; In addition, the inner cable channels 10 opened in the first pipe fitting 11 and the second pipe fitting 12 are made of elastic rubber material (not shown in the figure) at the end close to the electrical connection ring 13. This elastic rubber material has excellent insulation performance and can effectively prevent electrical safety hazards such as electric leakage. At the same time, with its elastic characteristics, it can closely fit the surface of the cable when one end of the cable joint is inserted, generating an appropriate clamping force, thus significantly improving the clamping stability of one end of the cable joint.

[0020] It can be seen from Figure 3 that the first pipe fitting 11 and the second pipe fitting 12 are both provided with electrical connection rings 13 inside the ends to be fitted. When the cable is installed inside the first pipe fitting 11 and the second pipe fitting 12, the insulation layer on the surface of the inserted end of the cable needs to be peeled off in advance. After the installation is completed, the end of the cable with the insulation layer peeled off will be in the semi-circular electrical connection ring 13. The electrical connection ring 13 is made of conductive metal material. When the first half pipe 14 and the second half pipe 15 are combined and spliced, the two semi-circular electrical connection rings 13 are spliced into a complete circular ring, and then tightly clamp the cable with the insulation layer peeled off. The electrical connection ring 13 made of metal material has good electrical conductivity. When the conductor of the cable is closely attached and close to the electrical connection ring 13, based on the electron migration theory of metal conduction, electrons can move freely between the cable conductor and the electrical connection ring 13, thus building a stable current conduction path and finally achieving the effect of electrical connection to ensure the effective transmission of electricity and signals between the cable and related equipment.

[0021] After the two cables to be connected are respectively installed inside the first pipe fitting 11 and the second pipe fitting 12, the first pipe fitting 11 and the second pipe fitting 12 need to be connected through the connecting mechanism 2. Next, the specific structure of the connecting mechanism 2 will be disclosed. The connecting mechanism 2 includes connecting spiral channels 21 provided on the surfaces of the first pipe fitting 11 and the second pipe fitting 12. The two connecting spiral channels 21 are both provided at the ends of the first pipe fitting 11 and the second pipe fitting 12 close to the electrical connection ring 13. A middle partition ring 22 is threadedly installed on the surfaces of the two connecting spiral channels 21.

[0022] Then, the specific structure of the gap-changing mechanism 3 will be disclosed. The gap-changing mechanism 3 further includes a bottom groove 31 opened at the bottom end of the middle part of the cable channel 10. The gap-changing member 32 includes a gap-changing convex block 321. A support member 322 is fixedly installed at the bottom of the gap-changing convex block 321. Limiting plates 323 are fixedly installed on both sides of the end of the gap-changing member 32 close to the bottom groove 31. The surfaces of the two limiting plates 323 are both in contact with the inner wall of the bottom groove 31.

[0023] The support member 322 includes a movable block 3221 fixedly connected to the bottom of the variable-gap bump 321. The movable block 3221 slides inside the fixed member 3222, and the bottom of the fixed member 3222 is fixedly connected inside the bottom groove 31 of the second half pipe 15. An elastic member 3223 is connected between the fixed member 3222 and the movable block 3221.

[0024] First, as Figure 4 and Figure 9 shown, when installing the cable in the cable channel 10, the middle end of the cable needs to be placed on the surface of the variable-gap bump 321, so that the middle part of the cable naturally forms a bent shape. After completing this step, then combine the first half pipe 14 and the second half pipe 15. Combining Figure 3 and Figure 8 shown, after two cables are installed inside the first combined pipe 11 and the second combined pipe 12, the middle partition ring 22 is placed on the surface of any one of the connecting spiral channels 21 in a spiral rotation manner. When the middle partition ring 22 rotates to the end position of the connecting spiral channel 21, pause the rotation operation. Immediately, fit and butt the first combined pipe 11 and the second combined pipe 12. Then, rotate the middle partition ring 22 in the reverse direction again until both ends of the middle partition ring 22 can be stably located on the surfaces of the first combined pipe 11 and the second combined pipe 12 respectively, so as to achieve the docking and fixing purpose of the first combined pipe 11 and the second combined pipe 12; During this process, it should be particularly noted that the ends of the first combined pipe 11 and the second combined pipe 12 must be precisely fitted and aligned. If there is a deviation in the end alignment, the middle partition ring 22 will not be able to perform normal rotation and fixing operations. At the same time, by virtue of the rotational connection method of the middle partition ring 22 between the first combined pipe 11 and the second combined pipe 12, a double-layer sealing structure is formed at the connection of the first combined pipe 11 and the second combined pipe 12, effectively improving the overall sealing effect and providing a strong guarantee for the stable operation and protection performance of the cable connection system.

[0025] When the cable is installed in the connector body 1, the middle ends of both cables will show a bent state. Due to the special structure of the meandering cavity 33, a complex flow path is formed inside. When external dust tries to enter the inside of the cable channel 10, compared with a straight channel, the dust will encounter more obstacles when moving in the complex path of the meandering cavity 33. When the dust particles pass through various irregular paths such as bends and turns, their kinetic energy will be continuously consumed and their movement direction is more likely to change, making it difficult to smoothly penetrate into the inside of the connector body 1 along the original direction and contact the cable connection part, thus effectively reducing the accumulation of dust inside the connector and improving the sealing performance of the entire connector body 1.

[0026] When the cable is installed, it bends in the meandering cavity 33 and reserves a length. Refer to Figure 5 and combine Figure 6As shown, once the cable is subjected to an external tensile force, under the influence of the tensile force, the bending part will first bear the tensile force and undergo corresponding deformation, and then pull the variable-gap bump 321 to slide into the interior of the bottom groove 31, forcing the movable block 3221 fixedly connected to the bottom of the variable-gap bump 321 to slide into the interior of the fixing member 3222. During this process, the elastic member 3223 is compressed under force. As the variable-gap bump 321 slides downward, the originally irregular meandering cavity 33 structure gradually becomes regular. In this dynamic change process, it is mainly concentrated in the variable-gap bump 321 and the meandering cavity 33 area, away from the electrical connection parts of the two cables. Therefore, even when the cable is in a tensile state as a whole, the tensile force is mainly buffered and absorbed by the bending part and related structures, and will not be directly transmitted to the electrical connection parts of the two cables, thus effectively protecting the stability and reliability of the electrical connection and reducing the situation of electrical connection loosening and sealing performance degradation caused by the tensile force; If the external tensile force on the cable weakens, the pressure borne by the elastic member 3223 (preferably a spiral spring member) originally compressed due to the tensile force will decrease accordingly. According to the characteristics of elastic materials, the elastic member 3223 will tend to generate a recovery deformation. This recovery force acts on the movable block 3221 connected to it, pushing the movable block 3221 to start sliding upward in the bottom groove 31. As the variable-gap bump 321 slides upward and resets, the surrounding spatial structure changes again, and the originally regular space gradually returns to the shape of the meandering cavity 33. Since the middle part of the cable is closely related to the structure of the meandering cavity 33 and is located therein, during the process of the meandering cavity 33 being formed again, the middle part of the cable will be subjected to the acting force from the cavity wall and related structures, and thus be forced to maintain its originally set bending state, making structural preparations for a possible tensile situation next time.

[0027] Among them, Figure 6 the dotted arrow indicates the tensile direction of the cable, Figure 6 and the dashed arrow indicates the sliding direction of the variable-gap bump 321.

[0028] When the cable is installed inside the connector body 1, its middle part is in a bent state. The bent cable will form contact points with the channel wall at multiple positions, and these contact points become the fixing points of the cable in the channel. More fixing points mean that the position of the cable in the channel can be more effectively constrained and fixed, and the possibility of its shaking and displacement is greatly reduced, thus significantly improving the installation stability of the cable in the cable channel 10. And when the cable is stable in the channel, the fitting degree between the cable and the channel wall can also be better maintained, reducing the gaps that may be generated due to the shaking or displacement of the cable, making it more difficult for external pollutants such as dust and moisture to enter the connector interior through these gaps, and thus effectively improving the sealing effect of the entire connection system.

[0029] Since the cable is in a bent state in the meandering cavity 33 and is prone to various external forces such as stretching and vibration during use in an industrial environment, a clamping member 4 is provided on the inner wall of the meandering cavity 33, and the clamping member 4 is made of an elastic material.

[0030] The improvement lies in: as Figure 5 shown, a clamping member 4 is provided on the inner wall of the meandering cavity 33. The clamping member 4 is preferably made of rubber and can generate appropriate deformation according to the shape of the cable when the cable bends, buffering the stress concentration during cable bending, and effectively reducing damages such as rupture and wear of the cable outer skin due to excessive bending.

[0031] Considering that the cable used in an industrial environment is prone to the action of tensile force, when the cable is stretched, its position is likely to shift. Therefore, two limiting strips 5 are fixedly installed on the surface of the variable-gap bump 321, and the cable is clamped and placed between the two limiting strips 5.

[0032] The improvement lies in: combining Figure 10 shown, two limiting strips 5 are fixedly installed on the surface of the variable-gap bump 321, and the cable is clamped and placed between the two limiting strips 5. In this way, the placement position of the cable can be accurately restricted, so that the cable is in a stable and appropriate position during initial installation. When the cable is stretched, the two limiting strips 5 can restrain the cable from both sides, reducing the random movement of the cable in the horizontal direction, thereby reducing the displacement of the cable during stretching, ensuring that the cable can be stretched and deformed in the meandering cavity 33 according to the design requirements, effectively playing the protective role of the meandering cavity 33 on the cable, and ensuring the stability and safety of the cable connection.

[0033] Since the inner part of one end of the cable channel 10 close to the end tail seal ring 6 does not have an elastic inner wall like the end close to the electrical connection ring 13, actions such as the sliding of the cable in the channel may cause dust and other impurities to more easily enter from this part. Therefore, end tail seal rings 6 are provided inside both the first pipe joint 11 and the second pipe joint 12 at the end far from the electrical connection ring 13.

[0034] The end tail seal ring 6 includes a clamping groove 61 opened inside the first half pipe 14 and the second half pipe 15. A fixing ring plate 63 is fixedly installed in the clamping groove 61 of the second half pipe 15. Two sets of roller groups 62 are movably arranged inside the fixing ring plate 63. The two roller groups 62 are arranged in a staggered manner, and both roller groups 62 are composed of a number of rollers connected.

[0035] The improvement lies in: referring to Figure 11As shown, after the cable is installed in the cable channel 10, the elastic sphere will adhere to the surface of the cable. Once the cable slides, the sphere will roll. During the rolling process, the sphere can adhere to the dust on the cable surface by virtue of its own adsorption property, thereby playing a role in cleaning the cable surface, reducing the situation of dust entering the inside of the cable channel 10. At the same time, since the two groups of spheres are arranged staggeredly, the gap between them is smaller, and they can cover the cable surface more comprehensively, making the seal between the cable and the end tail sealing ring 6 tighter, further improving the end sealing effect of the first pipe joint 11 and the second pipe joint 12, and effectively reducing the entry of dust and other impurities from the end of the cable channel 10. Among them, several rollers are installed in a penetrating manner.

[0036] In summary, the working principle of this solution is as follows: When installing the cable in the cable channel 10, the middle part of the cable needs to be placed on the surface of the variable-gap convex block 321, so that the middle part of the cable naturally forms a curved shape. After this step is completed, then combine the first half pipe 14 and the second half pipe 15. By covering the half pipe fixing ring 16 on the surface of the two half pipe fixing screw rings 17 in a rotating and sleeving manner, the firm splicing and fixing of the first half pipe 14 and the second half pipe 15 can be achieved. After the two cables are installed inside the first pipe joint 11 and the second pipe joint 12, place the middle partition ring 22 on the surface of any one of the connecting screw ring channels 21 in a spiral rotation manner. When the middle partition ring 22 rotates to the end position of the connecting screw ring channel 21, pause the rotation operation. Immediately, fit and dock the first pipe joint 11 and the second pipe joint 12. Then rotate the middle partition ring 22 in the reverse direction again until both ends of the middle partition ring 22 can be stably located on the surfaces of the first pipe joint 11 and the second pipe joint 12 respectively, so as to achieve the docking and fixing purpose of the first pipe joint 11 and the second pipe joint 12. During this process, by virtue of the rotational connection method of the middle partition ring 22 between the first pipe joint 11 and the second pipe joint 12, a double-layer sealing structure is formed at the connection of the first pipe joint 11 and the second pipe joint 12, effectively improving the overall sealing effect; When the cable is installed in the connector body 1, the middle parts of the two cables will both show a curved state. Due to the special structure of the meandering cavity 33, a complex flow path is formed inside, thereby effectively reducing the accumulation of dust inside the connector and improving the sealing performance of the entire connector body 1; During the use of the connected cable, once the cable is subjected to an external tensile force, under the influence of the tensile force, the bending part will first bear the tensile force and undergo corresponding deformation, and then pull the variable-gap convex block 321 to slide into the interior of the bottom groove 31, forcing the movable block 3221 fixedly connected to the bottom of the variable-gap convex block 321 to slide into the interior of the fixing member 3222. During this process, the elastic member 3223 is compressed by force. As the variable-gap convex block 321 slides downward, the originally irregular meandering cavity 33 structure gradually becomes regular. In this dynamic change process, it is mainly concentrated in the variable-gap convex block 321 and the meandering cavity 33 area, while far away from the electrical connection parts of the two cables. Therefore, even when the cable is in a tensile state as a whole, the tensile force is mainly buffered and absorbed by the bending part and related structures, and will not be directly transmitted to the electrical connection parts of the two cables, thus effectively protecting the stability and reliability of the electrical connection and reducing the situation of electrical connection loosening and sealing performance reduction caused by the tensile force.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A sealed cable connector, comprising a connector body (1), wherein the connector body (1) comprises a first joint tube (11) and a second joint tube (12), characterized in that: The first combined tube (11) and the second combined tube (12) are both provided with a cable channel (10) inside, and the cable channel (10) is used to place the cable. The first combined tube (11) and the second combined tube (12) are spliced ​​and installed, and the first combined tube (11) and the second combined tube (12) are symmetrically arranged. The first combined tube (11) and the second combined tube (12) are both provided with an electrical connection ring (13) inside the mating ends. The first combined tube (11) and the second combined tube (12) are butt-jointed and fixed via a connection mechanism (2); A gap-changing mechanism (3) is provided in the middle of the first combined tube (11) and the second combined tube (12), the gap-changing mechanism (3) comprising a gap-changing member (32), the gap-changing member (32) separating the middle of the cable channel (10) to form a meandering cavity (33), when the cable is in normal use, the cable is clamped inside the meandering cavity (33) at the middle end of the connector body (1), when the cable is stretched during use, the pulling force on the cable can force the gap-changing member (32) to slide, driving the cable in the meandering cavity (33) to stretch, thereby alleviating the pulling force applied to the cable surface, and at the same time, the meandering cavity (33) can also construct a complex path inside the cable channel (10); The first combined tube (11) and the second combined tube (12) are both composed of a first half tube (14) and a second half tube (15); the first half tube (14) and the second half tube (15) are identical in form; the gap-changing mechanism (3) further comprises a bottom groove (31); the bottom groove (31) is disposed at the bottom end of the middle portion of the cable channel (10); the gap-changing member (32) comprises a gap-changing protrusion (321); a support member (322) is fixedly mounted at the bottom of the gap-changing protrusion (321); the support member (322) comprises a movable block (3221) fixedly connected to the bottom of the gap-changing protrusion (321); the movable block (3221) slides inside the fixed member (3222).

2. The sealed cable connector according to claim 1, characterized in that: A half-tube fixing screw (17) is provided on the surface of one end of the first half-tube (14) and the second half-tube (15) away from the electrical connection ring (13); the first half-tube (14) and the second half-tube (15) are threadedly fixed via a half-tube fixing ring (16); and the half-tube fixing ring (16) is threadedly connected to the surface of the half-tube fixing screw (17).

3. The sealed cable connector according to claim 1, characterized in that: The connection mechanism (2) comprises a connection screw channel (21) arranged on the surface of the first combined tube (11) and the second combined tube (12), the two connection screw channels (21) being arranged at one end of the first combined tube (11) and the second combined tube (12) close to the electrical connection ring (13), and the surfaces of the two connection screw channels (21) are threadedly mounted with a spacer ring (22).

4. The sealed cable connector according to claim 1, characterized in that: Limiting plates (323) are fixedly mounted on both sides of the gap-changing member (32) close to one end of the bottom groove (31), and surfaces of the two limiting plates (323) are in contact with the inner wall of the bottom groove (31).

5. The sealed cable connector according to claim 4, characterized in that: The bottom of the fixing member (3222) is fixedly connected to the inside of the bottom groove (31) of the second half pipe (15), and the fixing member (3222) and the movable block (3221) are connected via an elastic member (3223).

6. The sealed cable connector according to claim 1, characterized in that: The inner wall of the meandering cavity (33) is provided with a clamping piece (4), and the clamping piece (4) is made of elastic material.

7. The sealed cable connector according to claim 4, characterized in that: Two limit strips (5) are fixedly mounted on the surface of the gap-changing protrusion (321), and the cable is clamped and placed between the two limit strips (5).

8. The sealed cable connector according to claim 2, characterized in that: An end sealing ring (6) is provided inside the ends of the first combined tube (11) and the second combined tube (12) away from the electrical connection ring (13).

9. The sealed cable connector according to claim 8, characterized in that: The end sealing ring (6) comprises a buckle groove (61) provided inside the first half tube (14) and the second half tube (15); a fixed ring plate (63) is fixedly installed inside the buckle groove (61) of the second half tube (15); two groups of roller assemblies (62) are movably arranged inside the fixed ring plate (63); the two roller assemblies (62) are staggered and both of the two roller assemblies (62) are composed of a plurality of rollers connected together.

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