Tubular cable self-sealing built-in intermediate connector

Abstract

This application relates to a self-sealing built-in intermediate connector for tubular cables. The connector includes a connecting post, a sealing and pushing mechanism, and a driving assembly. The connecting post has a connecting cavity and two radially staggered channels for inserting two cables, forming partial alignment at the connecting cavity. The driving assembly slides axially and is drivenly connected to the sealing and pushing mechanism. When the driving assembly moves in a first direction, the sealing and pushing mechanism pushes one cable through the connecting cavity to the other channel area, causing the two cables to radially adhere and form conductive contact, while simultaneously sealing the channel entrance. When the driving assembly moves in a second direction, the adhesion is released and the channel is reopened. This structure achieves electrical connection through partial peeling of the protective sheath, and, in conjunction with the entrance sealing structure, reduces the possibility of external media entering the connection area to a certain extent, making it suitable for cable splicing in complex environments.

Description

Technical Field

[0001] This application relates to the field of power electronic components technology, and in particular to a self-sealing built-in intermediate connector for tubular cables. Background Technology

[0002] Currently, during cable laying and installation, intermediate connectors are required to connect two cables of the same specification together to ensure that the required line length is met.

[0003] In existing technology, when connecting two cables, in order to improve the conductor performance, it is necessary to strip off the protective sheath of the cable connection part to expose the inner core wire before splicing. In some extreme environments where the cable is laid, cable damage is likely to occur in the intermediate connector. Summary of the Invention

[0004] This application provides a self-sealing built-in intermediate connector for tubular cables to at least partially solve the above-mentioned technical problems.

[0005] To achieve the above objectives, this application provides a self-sealing built-in intermediate connector for tubular cables, comprising: The connecting post has a connecting cavity and two channels. The two channels extend axially on the connecting post and are staggered radially on the connecting post. The connecting cavity is located between the two channels and partially connects them. The two channels are configured to allow two cables to be connected to be inserted into them respectively. A blocking and pushing mechanism is disposed within the connecting column; and A drive assembly is slidably disposed on the connecting column along the axial direction of the connecting column and is connected in transmission to the sealing and pushing mechanism; When the drive assembly moves in the first direction along the axial direction of the connecting column, the sealing and pushing mechanism pushes a portion of the cable body in one of the channels to move through the connecting cavity to the other channel, so that the two cable bodies are radially pressed together, and at the same time seals the entrance end of the channel. When the drive assembly moves in the second direction along the axial direction of the connecting column, the sealing and pushing mechanism releases the tightness of the two cable bodies and simultaneously releases the sealing state of the entrance end of the channel.

[0006] Optionally, the sealing and pushing mechanism includes a sealing component and a pushing component. The sealing component is used to seal the gap between the channel and the cable body when the driving component moves in a first direction along the axial direction of the connecting column. The pushing component is used to move radially within the connecting column when the driving component moves in the first direction along the axial direction of the connecting column, so as to push the portion of one cable body facing the communicating cavity toward the side wall of the other cable body and make the two fit together.

[0007] Optionally, the sealing assembly includes an annular airbag, a tube, and a piston. An annular groove is formed on the inner annular wall of the channel near the inlet end. The annular airbag is adhered to the annular groove. The tube is embedded in the tube wall of the connecting column and communicates with the annular airbag. The piston slides and seals within the tube and is connected to the driving assembly. When the driving assembly moves along the first direction, the piston slides and seals synchronously within the tube to gradually inflate the annular airbag and tightly fit it against the outer wall of the cable body located within the channel.

[0008] Optionally, the tube body includes a first air tube and a second air tube, both of which are embedded in the tube wall of the connecting column. One end of the first air tube is connected to one of the annular air bladders, and the piston is sealed and slids inside the first air tube. Both ends of the second air tube are respectively connected to one of the annular air bladders. As the piston moves along the first direction within the first trachea, the two annular air bladders inflate sequentially.

[0009] Optionally, the first air tube includes a connected axial section and a radial section, the axial section extending along the length of the connecting post, the radial section extending along the radial direction of the connecting post and communicating with one of the annular air bladders, and the piston seal sliding within the axial section.

[0010] Optionally, a first blocking part and a second blocking part are provided at intervals within the axial pipe section. The first blocking part is located at the open end of the axial pipe section away from the radial pipe section. A sliding cavity is defined between the first blocking part and the second blocking part, and the piston seal slides within the sliding cavity. When the piston moves to the position abutting against the second blocking part, the two annular airbags are inflated. When the piston moves to the position where it abuts against the first blocking part, the two annular airbags are in a contracted state.

[0011] Optionally, the pushing component includes an axial moving block and a radial moving block. A first moving channel is axially opened in the connecting column. The axial moving block is slidably embedded in the first moving channel and connected to the driving component. A second moving channel is radially opened in the connecting column. One end of the second moving channel is perpendicularly connected to the first moving channel, and the other end is perpendicularly connected to one of the channels. The radial moving block is slidably embedded in the second moving channel. The axial moving block has a first sliding inclined surface, and the radial moving block has a second sliding inclined surface at one end near the first moving channel. The first sliding inclined surface and the second sliding inclined surface slide and abut against each other. When the drive assembly moves in the first direction along the axial direction of the connecting column, the axial moving block moves axially within the first moving channel, and the first sliding inclined surface slides against the second sliding inclined surface, so that the end of the radial moving block away from the axial moving block extends into the channel from the second moving channel, and pushes one of the cable bodies to bend towards the other cable body until they are close together.

[0012] Optionally, the pushing component further includes an embedded block and a spring. A side groove is formed on the side wall of the second moving channel along the length direction of the second moving channel. The embedded block is connected to the side wall of the radial moving block and slidably inserted into the side groove. One end of the spring is connected to the embedded block and the other end is connected to the inner end wall of the side groove. The spring always has the tendency to drive the radial moving block to move closer to the first moving channel.

[0013] Optionally, the driving assembly includes a driving rod, a connecting block, and a toggle ring. A driving groove is provided on the connecting column, and the driving groove is connected to both the tube body and the first moving channel. The driving rod is located in the driving groove, with one end of the driving rod extending into the tube body and connected to the piston, and the other end extending into the first moving channel and connected to the axial moving block. The toggle ring is sleeved on the outer peripheral wall of the connecting column along the length direction of the connecting column. One end of the connecting block is connected to the inner wall of the toggle ring, and the other end is connected to the driving rod. The drive assembly also includes a rubber ring, which is connected to the inner ring wall of the actuating ring and frictionally presses against the outer wall of the connecting post.

[0014] Optionally, it also includes a gland end cap, wherein a gland end cap is provided at each end of the connecting post, and the gland end cap is configured to allow the cable body to pass through and be inserted into the connecting post.

[0015] This application has at least the following beneficial technical effects: 1. By incorporating a connecting cavity and radially staggered channels within the connecting post, the cable body undergoes protective sheathing treatment and achieves alignment contact only in localized areas. Combined with a sealing and pushing mechanism, a radial pushing force is applied to one of the cable bodies, ensuring a stable and tight fit between the two cables at the connecting cavity. This establishes a conductive path without relying on large-area stripping. The drive assembly and the sealing and pushing mechanism are linked, sealing the channel entrance while simultaneously securing the cable bodies. This creates a barrier between the cable insertion area and the external environment, reducing the possibility of moisture or impurities entering the connection area. The overall structure balances connection and protection functions, improving the stability of cable connections in complex laying environments and reducing the impact of exposed core wires. 2. By refining the sealing and pushing mechanism into a sealing component and a pushing component, and introducing a linkage structure of annular airbag, tube, and piston in the sealing component, the axial displacement of the driving component can be simultaneously converted into air pressure change and mechanical pushing action. The piston slides and seals within the tube, forming an air pressure transmission path. Under the action of air pressure, the annular airbag expands radially and adheres to the outer wall of the cable body, thereby filling the gap between the channel and the cable body, reducing the possibility of external media entering the connection area to a certain extent. Through the series structure of the first and second air pipes, multiple annular airbags form a sequential inflation relationship, which helps to construct a gradually expanding sealing process. The combination of axial and radial tube sections makes the piston movement direction consistent with the driving direction, and the transmission path is more direct, which is beneficial to improving response synchronization. The first and second blocking parts limit the piston stroke, giving the airbag a clear boundary between the inflation and contraction states, thereby maintaining controllable changes in the structural state during connection and disassembly, and working in conjunction with the pushing component to stabilize the cable body contact area.

[0016] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0019] Figure 1 This is a schematic diagram of the overall structure of the self-sealing built-in intermediate connector for tubular cables provided in the embodiments of this application. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the self-sealing built-in intermediate connector for tubular cables provided in the embodiments of this application. Figure 2 ; Figure 3 yes Figure 1 An enlarged schematic diagram of part A in the middle; Figure 4 yes Figure 2 Enlarged diagram of part B.

[0020] Explanation of reference numerals in the attached figures: 1. Connecting post; 11. Communicating cavity; 12. Channel; 13. Annular groove; 14. First moving channel; 15. Second moving channel; 16. Side groove; 17. Drive groove; 2. Blocking and pushing mechanism; 3. Sealing assembly; 31. Annular airbag; 32. Tube body; 321. First air tube; 3211. Axial tube segment; 3212. Radial tube segment; 322. Second air tube; 33. Piston; 4. Pushing component; 41. Axial moving block; 411. First sliding ramp; 42. Radial moving block; 421. Second sliding ramp; 43. Embedded block; 44. Spring; 5. Drive assembly; 51. Drive rod; 52. Connecting block; 53. Actuating ring; 54. Rubber ring; 6. First blocking part; 7. Second blocking part; 8. Sliding cavity; 9. Gland head end capping; 10. Cable body. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0022] This application provides a self-sealing built-in intermediate connector for tubular cables. Please refer to [link / reference]. Figure 1 and Figure 2 The connector includes a connecting post 1, a sealing and pushing mechanism 2, and a driving assembly 5. The connecting post 1 has a columnar structure and extends axially. Two channels 12 and a connecting cavity 11 located between the two channels are formed inside the connecting post 1. The two channels 12 are arranged along the axial direction of the connecting post 1 and are staggered in the radial direction of the connecting post 1.

[0023] It is worth noting that the misaligned distribution means that the two channels 12 do not coincide in the radial section, but have a certain lateral interval, thus forming a structural solid region between the two channels 12, and a connecting cavity 11 is opened inside the region.

[0024] For example, the connecting cavity 11 is located between two channels 12 and is partially connected to each of the two channels 12. The term "partially connected" means that the connecting cavity 11 forms an open connection with the wall of the channel 12 only in a defined area. This connection allows the cable body 10 to be offset across the channel 12 only in a specific area, thereby constraining the contact position of the cable body 10 and helping to maintain the concentration of the contact area.

[0025] For example, the two channels 12 are used to accommodate two cable bodies 10 to be connected. In the actual assembly process, before insertion, each cable body 10 has its protective sheath removed only at a predetermined local position, which corresponds to the connecting cavity 11. In this way, the core wire inside the cable body 10 is placed within the connecting area of ​​the connecting cavity 11 after insertion. Since the inner wall of the channel 12 covers the outer surface of the cable body 10, the cable body 10 has a certain positioning effect in the radial direction, thereby maintaining a relatively stable positional relationship of the exposed core wire area in space, and making it less likely to shift significantly during subsequent contact.

[0026] Exemplarily, the sealing and pushing mechanism 2 is disposed inside the connecting post 1 and forms a transmission relationship with the driving assembly 5. The sealing and pushing mechanism 2 is used to exert force on the cable body 10 and also to form a closed structure at the entrance end of the channel 12. The driving assembly 5 is slidably disposed along the axial direction of the connecting post 1, and its movement direction is limited to two opposite directions in the axial direction, a first direction and a second direction. During the movement of the driving assembly 5 along the first direction, the driving assembly 5 drives the sealing and pushing mechanism 2 to generate a linkage action. The sealing and pushing mechanism 2 applies a radial component force to the cable body 10 in one of the channels 12. Under the guidance of the connecting cavity 11, a local area of ​​the cable body 10 is offset along the direction of the connecting cavity 11 and enters the corresponding area of ​​the other channel 12, forming a radially close relationship with the exposed core wire area of ​​the other cable body 10.

[0027] It is worth noting that this radial contact is a lateral contact form, which achieves conductive contact through local lateral deformation or displacement of the cable body 10. During this process, the inner wall of the channel 12 provides support and restraint for the cable body 10, thereby enhancing the stability of the contact area to a certain extent.

[0028] During the aforementioned driving process, the sealing and pushing mechanism 2 moves synchronously toward the inlet end of the channel 12 and cooperates with the inlet of the channel 12. By fitting with the inlet of the channel 12, it gradually fills the gap, thereby forming a barrier area between the outside of the connecting post 1 and the inside of the channel 12. This barrier area structurally isolates the external environment. In environments where the cable is laid in a humid environment or where there are particulate impurities, it helps to reduce the possibility of external media entering the connecting cavity 11 area along the channel 12, thereby reducing the degree of environmental impact on the core wire exposed area.

[0029] Simultaneously, as the drive assembly 5 moves along the second direction, it drives the sealing and pushing mechanism 2 to move in the opposite direction. The effect of the sealing and pushing mechanism 2 on the cable body 10 gradually weakens until it is released, thereby releasing the radial tightness between the two cable bodies 10. During this process, the cable body 10 tends to return to its original state under its own elasticity. At the same time, the sealing and pushing mechanism 2 gradually withdraws from the inlet end of the channel 12, so that the inlet of the channel 12 is reopened, facilitating the disassembly or readjustment of the cable body 10.

[0030] With the above structural configuration, during the cable connection process, only the protective sheath of the cable body 10 needs to be partially removed in the radially opposite area. The connecting cavity 11 defines the contact position of the core wire, the sealing and pushing mechanism 2 can provide the force required for contact, and the channel 12 structure provides limiting and support, thereby forming a conductive path without relying on large-area stripping of the protective sheath. This structural relationship is beneficial to reducing the exposure range of the core wire.

[0031] Furthermore, with the sealing and pushing mechanism 2 forming a closed state at the entrance of the channel 12, even if some external influencing factors enter the interior of the connecting post 1, the cable body 10 retains most of its protective sheath within the channel 12, and the core wire contact area is in a tight state. This restricts the path of direct contact between the external medium and the core wire, thereby reducing the risk of corrosion or damage to a certain extent. The overall structure, through the cooperation between the connecting post 1, the connecting cavity 11, the sealing and pushing mechanism 2, and the driving assembly 5, comprehensively defines the connection path, contact method, and environmental isolation state of the cable body 10, exhibiting a certain degree of adaptability in complex laying environments.

[0032] In some implementations, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the sealing and pushing mechanism 2 consists of a sealing component 3 and a pushing component 4. Both are located inside the connecting column 1 and are linked with the driving component 5. The sealing component 3 is used to seal the gap between the channel 12 and the cable body 10, and the pushing component 4 is used to generate radial force on the cable body 10.

[0033] For example, the sealing component 3 can be an elastic collar, a deformable sealing ring, or a structure with radial expansion capability. In its initial state, there is a fitting gap between it and the outer surface of the cable body 10. When the driving component 5 moves axially in the first direction along the connecting post 1, the sealing component 3 undergoes radial deformation and contracts inward under axial force, thereby fitting into the space between the outer surface of the cable body 10 and the inner wall of the channel 12. This fitting state forms a circumferential closed path in the structure. This path forms a barrier relationship between the inlet direction of the channel 12 and the internal space. In the case of liquid or particulate impurities in the cable laying environment, this structural relationship is beneficial to reducing the possibility of external media entering the connection area along the gap path. At the same time, the elastic characteristics of the sealing component 3 can also form a certain covering force on the outer surface of the cable body 10, which helps to enhance the stability of the overall structure.

[0034] For example, the pusher component 4 is disposed within the connecting post 1 and located in the adjacent area of ​​the communicating cavity 11.

[0035] For example, the pushing component 4 can be a slider, a ramp pusher, or a pusher with a guide surface. During the movement of the driving component 5 along the first direction, the pushing component 4 generates radial displacement under the action of the transmission relationship. This radial displacement points towards the area of ​​the channel 12 where the other cable body 10 is located, thereby applying a lateral pushing force to one of the cable bodies 10. This pushing force is transmitted through the partial communication structure of the connecting cavity 11 to the area of ​​the exposed core wire of the cable body 10, causing this area to shift along the direction of the connecting cavity 11 and form lateral contact with the corresponding area of ​​the other cable body 10. During this contact process, the inner wall of the channel 12 provides reverse support, thereby forming a stable and tight fit between the two. This tight fit is a radial contact form, and the continuous force of the pushing component 4 maintains the contact pressure, which to some extent helps to improve the reliability of the conductive contact.

[0036] In the above structural relationship, the sealing component 3 and the pushing component 4 correspond to the sealing function and the contact function, respectively. Both operate synchronously under the unified drive of the driving component 5. On the one hand, the sealing component 3 fills the gap between the channel 12 and the cable body 10, constructing a relatively closed spatial structure. On the other hand, the pushing component 4 radially adjusts the cable body 10, allowing the exposed core wire area to form a contact path within the connecting cavity 11. This synergistic effect completes the electrical connection process without relying on large-area stripping of the protective sheath, and creates a certain degree of isolation around the connection area. In complex environmental conditions, this helps reduce the impact of external factors on the core wire contact area.

[0037] In some implementations, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the sealing assembly 3 includes an annular airbag 31, a tube 32, and a piston 33. The annular airbag 31 is located on the inner annular wall of the channel 12 near the inlet end. Specifically, an annular groove 13 is opened on the inner annular wall of the channel 12 and the annular airbag 31 is partially bonded to the annular groove 13.

[0038] It is worth noting that the "annular groove 13" can be understood as a groove structure continuously distributed around the circumference of the channel 12. Its depth and width match the uninflated state of the annular airbag 31, so that in the initial state the annular airbag 31 is in a contracted state and embedded in the inner side of the annular groove 13, without significantly obstructing the insertion path of the cable body 10.

[0039] For example, the tube 32 is embedded inside the tube wall of the connecting column 1 and communicates with the annular airbag 31. The “embedded” form means that the tube 32 is located inside the solid material of the connecting column 1 rather than being exposed, thereby forming a closed gas transmission channel in structure.

[0040] For example, the piston 33 is disposed inside the tube body 32 and is engaged in a sealed sliding manner. During the process of the drive assembly 5 moving axially in the first direction along the connecting column 1, the drive assembly 5 drives the piston 33 to move synchronously along the axial direction of the tube body 32. During the movement, the piston 33 compresses the gas inside the tube body 32, thereby gradually transmitting the air pressure to the annular airbag 31 connected to the tube body 32. As the air pressure increases, the annular airbag 31 gradually expands from the contracted state to the outer diameter direction, and its bladder wall bulges towards the center of the channel 12 and fits against the outer wall of the cable body 10.

[0041] It is understandable that during the bonding process, the annular airbag 31 fills the gap between the channel 12 and the cable body 10, forming a continuous circumferential contact area. This contact area structurally creates a barrier path, thereby reducing the possibility of external media entering the internal space along the inlet of the channel 12 to a certain extent. At the same time, the elastic deformation characteristics of the annular airbag 31 can also adapt to cable bodies 10 with different outer diameter tolerances within a certain range, which is beneficial to enhancing the sealing adaptability.

[0042] In some embodiments, the tube body 32 includes a first air tube 321 and a second air tube 322, both of which are embedded inside the tube wall of the connecting column 1 and are interconnected to form a gas transmission network. One end of the first air tube 321 is connected to one of the annular air bags 31, and the first air tube 321 is used to accommodate the piston 33 and serve as a sliding channel for the piston 33. Both ends of the second air tube 322 are connected to an annular air bag 31 respectively, thereby forming a series gas passage in structure.

[0043] It is understood that when the piston 33 moves in the first air pipe 321 along the first direction, the gas is first forced into the annular air bladder 31, which is directly connected to the first air pipe 321, causing the annular air bladder 31 to inflate preferentially. As the gas pressure continues to be transmitted, it flows through the second air pipe 322 to another annular air bladder 31, so that the second annular air bladder 31 subsequently enters the inflated state. This sequential inflation process corresponds to the order of the gas transmission path. Through this sequential relationship, a progressive sealing process can be formed in the structure, that is, the channel 12 near the drive side is sealed first, and then expands to the other channel 12. To a certain extent, this helps to reduce the impact of instantaneous gas pressure fluctuations on the overall structural stability. At the same time, the inlet areas of the two channels 12 are both in a circumferential fit, thereby constructing a double-sided sealing structure as a whole, which is beneficial to improving the adaptability of the connection area to complex environments.

[0044] In some embodiments, the first air tube 321 includes an axial tube segment 3211 and a radial tube segment 3212 that are interconnected, wherein the axial tube segment 3211 extends along the length direction of the connecting post 1 and serves as the main sliding space of the piston 33, and the radial tube segment 3212 extends from the side wall of the axial tube segment 3211 and communicates with the corresponding annular airbag 31.

[0045] It is worth noting that in this structural form, the "axial pipe section 3211" can be understood as a straight channel in the same direction of movement as the drive component 5, and the "radial pipe section 3212" can be understood as a branch channel connecting the axial pipe section 3211 and the annular airbag 31.

[0046] Since the piston 33 is located within the axial tube section 3211, the linear motion of the drive assembly 5 in the axial direction can be directly converted into synchronous sliding of the piston 33 within the axial tube section 3211. This eliminates the need for an additional conversion mechanism in the transmission path, simplifying the structure and reducing energy loss. During the movement of the piston 33, the gas is compressed along the axial tube section 3211 and enters the annular air bladder 31 through the radial tube section 3212. This path is a closed channel structure, which helps maintain the stability of the air pressure transmission.

[0047] For example, the axial pipe section 3211 is provided with a first blocking part 6 and a second blocking part 7 at intervals. The first blocking part 6 is located at the opening end of the axial pipe section 3211 away from the radial pipe section 3212, and the second blocking part 7 is located inside the axial pipe section 3211 near the radial pipe section 3212. The two define a sliding cavity 8, and the piston 33 slides in the sliding cavity 8.

[0048] It is worth noting that the "blocking part" can be a local contraction structure or a protrusion structure set on the inner wall of the pipe section. Its function is to limit the movement range of the piston 33. The "sliding cavity 8" refers to the closed space area formed between the two blocking parts, which is the effective movement range of the piston 33.

[0049] For example, during the movement of piston 33 in the first direction, when piston 33 moves to the position where it abuts against the second blocking part 7, the gas inside the sliding cavity 8 has been fully compressed and transmitted to the two annular air bladders 31 through the tube 32. At this time, both annular air bladders 31 are in an inflated state, and their outer walls are attached to the outer periphery of the cable body 10, thereby forming a stable sealing structure.

[0050] When the piston 33 moves in the opposite direction and finally comes into contact with the first blocking part 6, the gas pressure in the sliding chamber 8 decreases, the gas in the annular airbag 31 flows back or is released through the tube 32, the annular airbag 31 gradually returns to the contracted state and is re-embedded in the annular groove 13. In this state, the inner wall of the channel 12 returns to a basically flat structure, which is beneficial to the insertion and removal of the cable body 10.

[0051] For example, the dimensions of the first blocking part 6 and the second blocking part 7 are set smaller than the inner diameter of the axial pipe section 3211, thereby maintaining a gas flow gap between them and the inner wall of the pipe section. This gap forms a gas pressure transmission channel. During the movement of the piston 33, the gas can bypass the blocking parts and form a continuous flow path in the sliding cavity 8, thereby avoiding the situation where gas pressure cannot be transmitted due to complete blockage. With this structural configuration, the movement range of the piston 33 is limited to the range of the sliding cavity 8, and the gas compression and release process is completed within this range, thereby improving the controllability of the sealing state to a certain extent.

[0052] Based on the above structural relationships, the annular airbag 31 expands radially through gas pressure changes and adheres to the outer wall of the cable body 10. The tube 32 provides a closed transmission path for the gas. The piston 33 completes the gas pressure building process under the drive component 5. The first air tube 321 and the second air tube 322 form a series structure to realize the sequential inflation of multiple annular airbags 31. The axial tube section 3211 and the radial tube section 3212 construct a gas transmission path and match the driving direction. The first blocking part 6 and the second blocking part 7 limit the movement range of the piston 33 and stabilize the gas pressure change process. The various structures form a cooperative relationship. During the cable connection process, it can not only circumferentially seal the inlet area of ​​the channel 12, but also maintain the controllable change of the structural state at different working stages. It provides a certain degree of protection for the connection area of ​​the cable body 10 under complex environmental conditions, and cooperates with the push component 4 to maintain the stable state of the core wire contact area.

[0053] In some implementations, combined Figure 1 , Figure 2 , Figure 3 and Figure 4The pushing component 4 includes an axial moving block 41 and a radial moving block 42. A first moving channel 14 is opened inside the connecting column 1 along the axial direction. The first moving channel 14 is a straight channel structure extending along the length direction of the connecting column 1. The axial moving block 41 is slidably embedded in the first moving channel 14 and forms a connection relationship with the driving component 5, so that the axial moving block 41 is driven to generate displacement synchronously during the process of the driving component 5 moving along the axial direction of the connecting column 1.

[0054] For example, a second moving channel 15 is opened in the radial direction inside the connecting column 1. One end of the second moving channel 15 is perpendicularly connected to the first moving channel 14, and the other end is perpendicularly connected to one of the holes 12. The "perpendicular connection" can be understood as the two channels intersecting at approximately right angles in space, thereby forming a force transmission and turning path. The radial moving block 42 is slidably embedded in the second moving channel 15 and can move radially along the channel.

[0055] For example, the axial moving block 41 is provided with a first sliding inclined surface 411, and the radial moving block 42 is provided with a second sliding inclined surface 421 at one end near the first moving channel 14, forming a sliding abutment relationship between the two. Specifically, the "sliding inclined surface" can be understood as a guide surface that is inclined relative to its respective direction of movement. During the contact process, the guide surface can convert the axial movement into a radial component force, thereby realizing the conversion of the direction of movement.

[0056] It is understood that during the process of the drive assembly 5 moving axially in the first direction along the connecting column 1, the axial moving block 41 slides forward synchronously in the first moving channel 14, and the first sliding inclined surface 411 and the second sliding inclined surface 421 make relative sliding contact. Due to the inclination angle between the two, a radial component force is formed during the contact process. This component force pushes the radial moving block 42 to move away from the first moving channel 14 along the second moving channel 15 and gradually extend towards the channel 12.

[0057] When one end of the radial moving block 42 away from the second sliding inclined surface 421 enters the area of ​​the channel 12, the end makes contact with the outer wall of the cable body 10 in the channel 12 and applies a continuous radial thrust to the cable body 10. Under the action of this thrust, the cable body 10 undergoes a certain degree of lateral displacement or local bending in the channel 12. The part of it facing the connecting cavity 11 gradually moves closer to the connecting cavity 11 and eventually forms a fitting relationship with the corresponding area of ​​the cable body 10 in another channel 12.

[0058] It is worth noting that, since the protective sheath of both cable bodies 10 has been partially removed in this area to expose the core wires, a tight contact is formed between the core wires under the continuous action of radial thrust. This contact forms a conductive path in the structure, and due to the continuous action of the radial moving block 42, the contact area remains stable to a certain extent, which helps to reduce the possibility of loosening of the contact.

[0059] In the above structure, the first moving channel 14 and the second moving channel 15 constitute a force transmission path. The axial moving block 41 provides the driving force input, and the radial moving block 42 undertakes the output function. The cooperation relationship between the first sliding inclined surface 411 and the second sliding inclined surface 421 converts the axial displacement into the radial displacement. This conversion process depends on the relative sliding and angle relationship between the inclined surfaces, so as to complete the direction conversion without the need for a complex transmission mechanism, which is beneficial to simplify the structure and reduce the manufacturing complexity.

[0060] Meanwhile, the radial moving block 42 slides along the second moving channel 15, and its movement path is constrained by the inner wall of the channel, thereby maintaining the stability of the movement direction to a certain extent.

[0061] In some implementations, combined Figure 1 , Figure 2 , Figure 3 and Figure 4 The pushing component 4 also includes an embedded block 43 and a spring 44. The side wall of the second moving channel 15 has a side groove 16 along its length. The side groove 16 is a groove structure that extends along the movement direction of the radial moving block 42. The embedded block 43 is connected to the side wall of the radial moving block 42 and is slidably inserted into the side groove 16. This structural relationship provides guidance and limitation for the radial moving block 42, so that the radial moving block 42 remains basically aligned with the axis of the second moving channel 15 during movement, reducing swaying or jamming.

[0062] For example, one end of the spring 44 is connected to the embedded block 43 and the other end is connected to the inner end wall of the side groove 16, thereby forming an elastic recovery unit in structure. The spring 44 always has the tendency to drive the radial moving block 42 to move closer to the first moving channel 14.

[0063] It is understood that during the movement of the drive assembly 5 along the second direction, the axial moving block 41 slides in the opposite direction within the first moving channel 14, and the first sliding inclined surface 411 gradually disengages from the squeezing action on the second sliding inclined surface 421. At this time, the radial moving block 42 is no longer subjected to the outward pushing force from the inclined surface. Under the elastic recovery action of the spring 44, the embedded block 43 drives the radial moving block 42 to move back along the second moving channel 15 towards the direction closer to the first moving channel 14, thereby causing the radial moving block 42 to gradually exit the area of ​​the channel 12 and return to its initial position. During this process, the radial force exerted by the radial moving block 42 on the cable body 10 gradually weakens until it disappears. The cable body 10 can return to an uncompressed state under its own elasticity or external operation, thus providing conditions for the disassembly or readjustment of the cable body 10.

[0064] Through the above structural configuration, the axial moving block 41 and the radial moving block 42 form a force conversion relationship through the sliding inclined plane, the embedded block 43 and the side groove 16 form a guiding constraint relationship, the spring 44 provides the reset power, and the various structures form a cooperative action path. Under the drive of the drive component 5, the radial pushing and releasing process of the cable body 10 is completed. In the connected state, it is beneficial to maintain the stability of the core wire contact area. In the released state, it helps to restore the initial shape of the structure, thereby forming a switchable functional state between different working stages. The overall structure has a certain adaptability in the process of cable connection and disassembly.

[0065] In some implementations, combined Figure 1 , Figure 2 , Figure 3 and Figure 4 The drive assembly 5 includes a drive rod 51, a connecting block 52, and a toggle ring 53. The outer wall of the connecting column 1 has a drive groove 17 along the axial direction. The drive groove 17 is spatially connected to the tube body 32 and the first moving channel 14, thereby constructing a through force transmission path.

[0066] For example, the drive rod 51 is arranged in the drive groove 17 and extends axially. One end of it extends into the tube 32 and is connected to the piston 33, and the other end extends into the first moving channel 14 and is connected to the axial moving block 41. In this structure, the drive rod 51 has both pneumatic drive and mechanical push functions. The actuating ring 53 is sleeved on the outer peripheral wall of the connecting post 1 along the length direction of the connecting post 1. One end of the connecting block 52 is fixedly connected to the inner wall of the actuating ring 53, and the other end is connected to the drive rod 51. Thus, when the actuating ring 53 is subjected to external force, the axial displacement is transmitted to the drive rod 51 through the connecting block 52.

[0067] It is understood that during operation, an external person applies a pushing force to the actuating ring 53 along the first direction, causing the actuating ring 53 to move axially along the connecting post 1. This movement is converted into a synchronous axial displacement of the driving rod 51 through the connecting block 52. The driving rod 51 further transmits this displacement to the piston 33 and the axial moving block 41 respectively. Since the piston 33 is located inside the tube 32 and is directly connected to the driving rod 51, the driving rod 51 causes the piston 33 to slide in a sealed manner within the tube 32 during its movement, thereby guiding the air pressure to be transmitted to the annular airbag 31 and pushing the annular airbag 31 into an inflated state. At the same time, the other end of the driving rod 51 drives the axial moving block 41 to move within the first moving channel 14. Through the relative sliding relationship between the first sliding inclined surface 411 and the second sliding inclined surface 421, the radial moving block 42 is driven to generate radial displacement and apply a pushing force to the cable body 10. This forms a structural relationship of single driving input corresponding to multiple path outputs, completing the coordinated action of airbag inflation and radial contact with the cable body 10 in one actuation process. This coordinated relationship helps to simplify the operation steps and improve the synchronization of actions.

[0068] For example, the drive assembly 5 also includes a rubber ring 54, which is disposed on the inner ring wall of the actuating ring 53 and forms a frictional compression fit with the outer wall of the connecting post 1. Specifically, this "frictional compression fit" can be understood as the rubber ring 54 generating a certain radial pressing force on the outer wall of the connecting post 1 in the assembled state, thereby forming a stable frictional resistance between the actuating ring 53 and the connecting post 1. After the actuating ring 53 moves to the target position, this frictional resistance acts as a stop for the actuating ring 53, allowing the actuating ring 53 to maintain its current position without external force. This helps maintain the stability of the drive assembly 5 and provides a certain amount of damping feedback during operation, enhancing the controllability during operation.

[0069] In some implementations, combined Figure 1 , Figure 2 , Figure 3 and Figure 4 The connector also includes a gland end cap 9, with a gland end cap 9 provided at each end of the connecting post 1. The gland end cap 9 is used for the cable body 10 to pass through and enter the interior of the connecting post 1.

[0070] For example, the gland end cap 9 can adopt a compression structure or a sealing clamping structure to fix the cable body 10 by axial compression or radial clamping after the cable body 10 is inserted, thereby restricting the tendency of the cable body 10 to move in the axial direction.

[0071] With this structural configuration, the cable body 10 is constrained at both ends of the connecting post 1 after being inserted into the channel 12. During the subsequent radial force applied to the cable body 10 by the pushing component 4, the overall position of the cable body 10 remains stable, which is beneficial to maintaining the positional relationship of the core wire contact area. At the same time, the gland end cap 9 forms a covering contact with the outer periphery of the cable body 10, which isolates it from the external environment to a certain extent, thus working together with the internal sealing component 3 to construct a multi-layer protection structure.

[0072] It is worth noting that when inserting the cable body 10 into the channel 12 and pressing it against the inner wall of the channel 12, the cable body 10 needs to be moved back a certain distance to allow sufficient space between it and the inner wall of the channel 12. This ensures that subsequent bending of the cable body 10 is not affected or interfered with, allowing it to deflect normally under the action of the pushing component 4. The other cable body 10 does not require this process and can be directly pressed against the inner wall of the other channel 12.

[0073] In some embodiments, a first positioning plate is provided on the actuating ring 53, and a second positioning plate is provided on the outer wall of the connecting column 1. The first positioning plate and the second positioning plate are directly opposite each other in the axial direction of the connecting column 1. When the actuating ring 53 moves in the first direction along the axial direction of the connecting column 1 and the piston 33 is in contact with the second blocking part 7, the first positioning plate and the second positioning plate are also in contact with each other, and the first positioning plate and the second positioning plate can be connected by bolts.

[0074] It is understandable that by setting the first positioning plate and the second positioning plate to be bolted together, the actuating ring 53 can be stably maintained at the position where the annular airbag 31 is inflated and one of the cable bodies 10 is deflected, and is not easily affected by external interference, so as to make the sealing effect of the intermediate connector and the fit effect of the two cable bodies 10 more stable.

[0075] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0076] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0077] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0078] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A self-sealing built-in intermediate connector for tubular cables, characterized in that, include: The connecting post (1) has a connecting cavity (11) and two channels (12). The two channels (12) extend axially in the connecting post (1) and are staggered radially in the connecting post (1). The connecting cavity (11) is located between the two channels (12) and partially connects them. The two channels (12) are configured to allow two cables (10) to be connected to be inserted into them respectively. A blocking and pushing mechanism (2) is disposed within the connecting column (1); and The drive assembly (5) is slidably disposed on the connecting column (1) along the axial direction of the connecting column (1) and is connected to the blocking and pushing mechanism (2) in a transmission manner. When the drive assembly (5) moves in the first direction along the axial direction of the connecting column (1), the sealing and pushing mechanism (2) pushes a portion of the cable body (10) in one of the channels (12) through the connecting cavity (11) to the other channel (12) so that the two cable bodies (10) are radially close together, and at the same time seals the entrance end of the channel (12). When the drive assembly (5) moves in the second direction along the axial direction of the connecting column (1), the sealing and pushing mechanism (2) releases the tightness of the two cable bodies (10) and simultaneously releases the sealing state of the entrance end of the channel (12).

2. The self-sealing built-in intermediate connector for tubular cables according to claim 1, characterized in that, The sealing and pushing mechanism (2) includes a sealing component (3) and a pushing component (4). The sealing component (3) is used to seal the gap between the channel (12) and the cable body (10) when the driving component (5) moves in the first direction along the axial direction of the connecting column (1). The pushing component (4) is used to move radially within the connecting column (1) when the driving component (5) moves in the first direction along the axial direction of the connecting column (1) to push the portion of one cable body (10) facing the connecting cavity (11) toward the side wall of the other cable body (10) and make them stick together.

3. The self-sealing built-in intermediate connector for tubular cables according to claim 2, characterized in that, The sealing assembly (3) includes an annular airbag (31), a tube (32), and a piston (33). An annular groove (13) is provided on the inner annular wall of the channel (12) near the inlet end. The annular airbag (31) is bonded to the annular groove (13). The tube (32) is embedded in the tube wall of the connecting column (1) and communicates with the annular airbag (31). The piston (33) slides in a sealed manner in the tube (32) and is connected to the driving assembly (5). When the driving assembly (5) moves in the first direction, the piston (33) slides in a sealed manner in the tube (32) to gradually inflate the annular airbag (31) and tightly fit it against the outer wall of the cable body (10) located in the channel (12).

4. A self-sealing built-in intermediate connector for tubular cables according to claim 3, characterized in that, The tube body (32) includes a first air tube (321) and a second air tube (322). The first air tube (321) and the second air tube (322) are both embedded in the tube wall of the connecting column (1). One end of the first air tube (321) is connected to one of the annular air bags (31), and the piston (33) slides in a sealed manner in the first air tube (321). The two ends of the second air tube (322) are respectively connected to one of the annular air bags (31). When the piston (33) moves in the first air tube (321) along the first direction, the two annular air bladders (31) inflate in sequence.

5. A self-sealing built-in intermediate connector for tubular cables according to claim 4, characterized in that, The first trachea (321) includes an axial tube segment (3211) and a radial tube segment (3212) that are connected. The axial tube segment (3211) extends along the length of the connecting post (1), and the radial tube segment (3212) extends along the radial direction of the connecting post (1) and communicates with one of the annular airbags (31). The piston (33) is sealed and slides within the axial tube segment (3211).

6. A self-sealing built-in intermediate connector for tubular cables according to claim 5, characterized in that, The axial pipe section (3211) is provided with a first blocking part (6) and a second blocking part (7) at intervals. The first blocking part (6) is located at the opening end of the axial pipe section (3211) away from the radial pipe section (3212). A sliding cavity (8) is defined between the first blocking part (6) and the second blocking part (7). The piston (33) slides in the sliding cavity (8) in a sealed manner. When the piston (33) moves to a position that abuts against the second blocking part (7), the two annular airbags (31) are inflated. When the piston (33) moves to a position that abuts against the first blocking part (6), the two annular airbags (31) are in a contracted state.

7. A self-sealing built-in intermediate connector for tubular cables according to claim 3, characterized in that, The pushing component (4) includes an axial moving block (41) and a radial moving block (42). A first moving channel (14) is axially opened in the connecting column (1). The axial moving block (41) is slidably embedded in the first moving channel (14) and connected to the driving component (5). A second moving channel (15) is radially opened in the connecting column (1). One end of the second moving channel (15) is perpendicularly connected to the first moving channel (14), and the other end is perpendicularly connected to one of the channels (12). The radial moving block (42) is slidably embedded in the second moving channel (15). The axial moving block (41) has a first sliding inclined surface (411), and the radial moving block (42) has a second sliding inclined surface (421) at one end near the first moving channel (14). The first sliding inclined surface (411) and the second sliding inclined surface (421) slide and abut against each other. When the drive assembly (5) moves in the first direction along the axial direction of the connecting column (1), the axial moving block (41) moves axially within the first moving channel (14), and the first sliding inclined surface (411) slides against the second sliding inclined surface (421) so that one end of the radial moving block (42) away from the axial moving block (41) extends into the channel (12) from the second moving channel (15) and pushes one of the cable bodies (10) to bend towards the other cable body (10) until they are close together.

8. A self-sealing built-in intermediate connector for tubular cables according to claim 7, characterized in that, The pushing component (4) also includes an embedded block (43) and a spring (44). A side groove (16) is provided on the side wall of the second moving channel (15) along the length direction of the second moving channel (15). The embedded block (43) is connected to the side wall of the radial moving block (42) and slidably inserted into the side groove (16). One end of the spring (44) is connected to the embedded block (43) and the other end is connected to the inner end wall of the side groove (16). The spring (44) always has the tendency to drive the radial moving block (42) to move closer to the first moving channel (14).

9. A self-sealing built-in intermediate connector for tubular cables according to claim 8, characterized in that, The drive assembly (5) includes a drive rod (51), a connecting block (52), and a toggle ring (53). A drive groove (17) is provided on the connecting column (1). The drive groove (17) is connected to the tube body (32) and the first moving channel (14). The drive rod (51) is located in the drive groove (17). One end of the drive rod (51) extends into the tube body (32) and is connected to the piston (33), and the other end extends into the first moving channel (14) and is connected to the axial moving block (41). The toggle ring (53) is sleeved on the outer peripheral wall of the connecting column (1) along the length direction of the connecting column (1). One end of the connecting block (52) is connected to the inner wall of the toggle ring (53), and the other end is connected to the drive rod (51). The drive assembly (5) also includes a rubber ring (54), which is connected to the inner ring wall of the actuating ring (53) and is in frictional compression fit with the outer wall of the connecting post (1).

10. A self-sealing built-in intermediate connector for tubular cables according to any one of claims 1 to 9, characterized in that, It also includes a gland end cap (9), which is provided at both ends of the connecting post (1), and the gland end cap (9) is configured to allow the cable body (10) to pass through and be inserted into the connecting post (1).

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