Miniature connector box optical cable sealing structure

Abstract

The utility model provides a miniature connector box optical cable sealing structure, which belongs to the technical field of optical fiber communication equipment and comprises a base, a long clamp assembly, a short clamp assembly, an optical cable sealing element, a box cover, a main sealing ring and an optical cable. The base is movably provided with the box cover through the long and short clamp assemblies, the optical cable sealing piece is inserted into a U-shaped groove of the base, and the main sealing ring is arranged in a limiting groove of the box cover. The optical cable sealing piece is made of low-hardness rubber and is provided with an X-shaped through hole and a cutting groove, the X-shaped through hole is matched with a large-diameter optical cable and facilitates cable penetration, the cutting groove achieves lateral embedding of the optical cable, and construction is simplified. The long and short clamp assemblies evenly compress the sealing piece through spring force, and IP-68-level sealing is ensured. According to the utility model, the problems of difficulty in cable penetration, need of multi-specification accessories, low assembly efficiency and poor sealing reliability of a traditional miniature joint box are solved, and rapid assembly, large-diameter optical cable adaptation and long-term high reliability are realized through the design of X-shaped through holes, low-hardness materials and hoop locking.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber communication equipment technology, and in particular to a micro junction box optical cable sealing structure. Background Technology

[0002] With the rapid construction of my country's fiber optic communication network and the large-scale deployment of emerging applications such as 5G, cloud computing, and the Internet of Things, the number of fiber optic cable nodes has surged, and the cabling environment has become more diverse and space-constrained. To achieve reliable fiber optic splicing and branching in confined spaces such as base station cabinets, building electrical shafts, and even pole terminals, the market has created an urgent demand for miniature junction boxes with smaller size and denser interfaces. On the one hand, multiple fiber optic cables of different outer diameters often need to be accommodated in the same box, significantly increasing the number and specifications of interfaces. On the other hand, outdoor installation points face the impact of rain, dust, and temperature differences, requiring the sealed structure to be lightweight, quick to assemble, and maintain IP-68 waterproof and dustproof performance over the long term.

[0003] However, existing miniature junction boxes generally use the traditional sealing solution of "high-hardness straight-hole rubber plug + bolt cap", which exposes multiple defects: ① The straight hole interferes greatly with the large-diameter optical cable, making it difficult to insert the cable, and requiring multiple plugs of different outer diameters, increasing inventory and mismatch risks; ② High-hardness rubber requires a large compressive load to ensure sealing, resulting in high assembly torque and high on-site work intensity, and the rubber is prone to permanent deformation and failure under long-term pressure; ③ Multi-point bolt tightening requires tightening each bolt individually and applying even force, resulting in a long assembly and disassembly cycle, which cannot meet the needs of efficient construction and frequent maintenance under dense 5G deployment; ④ If the bolt pre-tightening is uneven or the plug is misaligned, gaps are prone to appear on the sealing surface, and reliability cannot be guaranteed when exposed to cold and heat cycles and vibration environments for a long time. To address the above pain points, there is an urgent need for a miniature junction box optical cable sealing structure that combines rapid assembly, large-diameter self-adaptation, and long-term high reliability to meet the miniaturization and high-density access requirements of the next-generation optical fiber communication network. Utility Model Content

[0004] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of this section, the abstract and the title of this utility model. Such simplifications or omissions shall not be used to limit the scope of this utility model.

[0005] In view of the problems existing in the above and / or prior art, the present invention is proposed.

[0006] Therefore, this utility model aims to solve the shortcomings of existing micro junction box optical cable sealing structures in terms of rapid assembly, large-diameter optical cable adaptation, and long-term sealing reliability, such as the difficulty of cable insertion with traditional straight hole rubber plugs, the need for various specifications of accessories, low assembly efficiency, and sealing failure.

[0007] To solve the above technical problems, this utility model provides the following technical solution: a miniature junction box optical cable sealing structure, including a base, long clamp assemblies movably installed at the left and right ends of the base, short clamp assemblies movably installed at the front and rear ends of the base, optical cable sealing elements movably installed at the front and rear ends of the base and inside the two short clamp assemblies, a box cover movably installed at the top of the base through the long clamp assemblies and the short clamp assemblies, a main sealing ring movably installed between the box cover and the base, and optical cables inserted through the two optical cable sealing elements.

[0008] As a preferred embodiment of the micro junction box optical cable sealing structure of this utility model, the long clamp assembly includes a long sealing plate, and a first locking position is provided at the bottom of the outer side of the long sealing plate. The long sealing plate spring is rotatably connected inside the first locking position.

[0009] As a preferred embodiment of the micro junction box optical cable sealing structure of this utility model, the short clamp assembly includes a short sealing plate, and a second locking position is provided on the outer side of the bottom end of the short sealing plate. The short sealing plate spring is rotatably connected inside the second locking position.

[0010] As a preferred embodiment of the micro junction box optical cable sealing structure of this utility model, the outer surfaces of both the left and right ends of the base are provided with first slots that are adapted to the long sealing plate springs, and the two sets of long clamp assemblies are respectively rotatably installed at the left and right ends of the base through the two sets of long sealing plate springs.

[0011] As a preferred embodiment of the micro junction box optical cable sealing structure of this utility model, the outer surfaces of both the front and rear ends of the base are provided with second slots that are adapted to the short sealing plate springs, and the two sets of short clamp assemblies are respectively rotatably installed at the front and rear ends of the base through the two sets of short sealing plate springs.

[0012] As a preferred embodiment of the micro junction box optical cable sealing structure of this utility model, U-shaped grooves are symmetrically provided at both ends of the base and on the left and right sides of the second slot, and the optical cable sealing element is inserted into the U-shaped groove.

[0013] According to the micro junction box optical cable sealing structure of the claim, the outer surface of the optical cable seal is provided with a positioning groove that matches the U-shaped groove, the middle part of the optical cable seal is provided with an X-shaped through hole, one side of the X-shaped through hole is provided with a groove, and the outer side of the groove communicates with the positioning groove.

[0014] As a preferred embodiment of the micro junction box optical cable sealing structure of this utility model, the lower surface of the box cover is provided with a limiting groove adapted to the main sealing ring, the outer sides of the front and rear ends of the box cover are provided with a second mounting position adapted to the short sealing plate spring, and the outer sides of the left and right ends of the box cover are provided with a first mounting position adapted to the long sealing plate spring.

[0015] The beneficial effects of this utility model are:

[0016] (1) The long clamp assembly and the long sealing plate spring and the short sealing plate spring on the short clamp assembly are inserted into the first and second slots on both sides of the base, and then linked with the first and second mounting positions on the box cover; the four clamps can be locked or released at one time by simply flipping them over, and a single person can complete the assembly and disassembly within 30 seconds, completely replacing the inefficient process of tightening multiple bolts with equal force.

[0017] (2) After the optical cable seal is placed into the U-shaped groove, the positioning groove fits the groove wall to prevent lateral displacement; its internal X-shaped through hole and groove allow the optical cable to be pushed directly from the side. After being pressed, the cross section automatically hugs optical cables of different outer diameters, thus avoiding hard top perforation and covering multiple specifications with a single seal, significantly reducing the number of spare parts.

[0018] (3) The low-hardness elastic optical cable seal and the main sealing ring respectively bear the two-level sealing of the optical cable and the box body: the limiting groove on the lower surface of the box cover ensures that the compression of the main sealing ring is constant; the clamp applies pressure evenly on all four sides, and the main and auxiliary seals are subjected to force at the same time, which can stably achieve a high level of protection under a small torque and avoid long-term creep failure of rubber.

[0019] (4) By interlocking the U-shaped groove and the positioning groove and limiting the rotation of the clamps by the first / second groove, the seal is ensured not to slip or deviate during the pressing process; the long and short clamps are symmetrically distributed in a rectangle, so that the axial and radial forces on the cover are balanced, eliminating the risk of local warping and improving the long-term reliability under temperature difference and vibration environment. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the structure of the base of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the long clamp assembly of this utility model;

[0024] Figure 4 This is a schematic diagram of the short clamp assembly of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the box lid of this utility model;

[0026] Figure 6 This is a schematic diagram of the main sealing ring of this utility model;

[0027] Figure 7 This is a perspective view of the optical cable sealing component of this utility model;

[0028] Figure 8 This is a side sectional view of the optical cable seal of this utility model. Detailed Implementation

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0032] Furthermore, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0033] Example

[0034] Reference Figures 1 to 8This invention provides a miniature junction box optical cable sealing structure, designed to achieve rapid assembly, large-diameter optical cable adaptation, and long-term high-reliability sealing, suitable for fiber optic communication scenarios such as 5G, cloud computing, and the Internet of Things. The structure includes a base 6, which serves as the foundation platform for the entire junction box, supporting all components and providing a stable installation interface. Long clamp assemblies 3 are movably mounted at its left and right ends, used to lock the cover 2 and base 6 with uniform spring force, ensuring the overall stability of the sealing structure. Short clamp assemblies 4 are movably mounted at the front and rear ends of the base 6, forming a multi-directional locking mechanism with the long clamp assemblies 3, improving assembly efficiency and sealing reliability. Optical cable seals 1 are movably mounted at the front and rear ends of the base 6, inside the two short clamp assemblies 4. The optical cable seals 1 are used to fix and seal the optical cable 7, ensuring IP-68 protection for the optical cable interface under complex environments (such as rain, dust, and temperature differences). The cover 2 is movably mounted at the top of the base 6 via the long clamp assemblies 3 and short clamp assemblies 4. The cover 2 serves as the top protective component of the sealing structure, preventing external environmental intrusion and working with the base 6 to compress the seals. A main sealing ring 5 is movably installed between the cover 2 and the base 6, filling the gap between them to ensure the waterproof and dustproof performance of the entire system. Optical cables 7 are inserted through the two optical cable seals 1, and the special design of the optical cable seals 1 enables quick installation and reliable sealing of the optical cables 7.

[0035] Specifically, the long clamp assembly 3 includes a long sealing plate 301 and a long sealing plate spring 302. A first locking position 3011 is provided at the bottom outer side of the long sealing plate 301, and the long sealing plate spring 302 is rotatably connected inside the first locking position 3011. Driven by spring force, the long sealing plate spring 302 fixes the long sealing plate 301 to the base 6 and the cover 2 during rotation, applying uniform compression force. This replaces the traditional point-by-point tightening of bolts, significantly reducing assembly torque and construction time, while avoiding sealing failure caused by uneven pre-tightening, ensuring long-term reliability. The short clamp assembly 4 includes a short sealing plate 401 and a short sealing plate spring 402. A second locking position 4011 is provided at the outer bottom of the short sealing plate 401, and the short sealing plate spring 402 is rotatably connected inside the second locking position 4011. The long clamp assembly 3 and the short clamp assembly 4 work together to quickly lock the left and right sides of the cover 2 with spring force, ensuring balanced force in multiple directions, adapting to vibration and hot and cold cycling environments, and improving the operation and maintenance efficiency in 5G dense deployment scenarios.

[0036] Furthermore, the outer surfaces of both ends of the base 6 are provided with first slots 601 that are adapted to the long sealing plate springs 302. The two sets of long clamp assemblies 3 are rotatably installed at the left and right ends of the base 6 through the two sets of long sealing plate springs 302. The first slots 601 provide precise positioning and rotation space for the long sealing plate springs 302, ensuring uniform transmission of locking force and reducing assembly deviation. The outer surfaces of both the front and rear ends of the base 6 are provided with second slots 602 that are adapted to the short sealing plate springs 402. The two sets of short clamp assemblies 4 are rotatably installed at the front and rear ends of the base 6 through the two sets of short sealing plate springs 402. The second slots 602 optimize the rotational stability of the short clamps and enhance the vibration resistance of the overall structure. U-shaped grooves 603 are symmetrically provided at the front and rear ends of the base 6 and on the left and right sides of the second slots 602. The optical cable seal 1 is inserted into the U-shaped grooves 603. The U-shaped grooves 603 provide a firm embedded positioning for the optical cable seal 1, preventing displacement during installation and ensuring the integrity of the sealing surface.

[0037] Furthermore, the optical cable seal 1 is made of low-hardness rubber material, achieving greater compression with less compressive force, reducing assembly strength and the risk of permanent deformation under long-term compression, thus extending the seal life. Its outer surface has a positioning groove 101 that matches the U-shaped groove 603. The positioning groove 101 fits into the U-shaped groove 603, ensuring precise alignment of the optical cable seal 1 and avoiding sealing gaps caused by misalignment in traditional solutions. An X-shaped through-hole 103 is provided in the middle of the optical cable seal 1. The X-shaped through-hole 103 has larger openings at both ends and narrows in the middle, forming a guiding structure to facilitate the insertion of large-diameter optical cables 7 and reduce insertion resistance. Testing shows that the X-shaped through-hole 103 can effectively seal optical cables of various outer diameters, expanding the compatibility range, reducing the need for seals of different specifications, and lowering inventory costs. A slot 102 is provided on one side of the X-shaped through hole 103. The outer side of the slot 102 communicates with the positioning groove 101, allowing the optical cable 7 to be inserted into the X-shaped through hole 103 laterally, eliminating the traditional cable threading steps, significantly shortening the construction time, and making it particularly suitable for narrow spaces or high-density wiring scenarios.

[0038] Furthermore, the lower surface of the cover 2 is provided with a limiting groove 201 that matches the main sealing ring 5. The limiting groove 201 ensures that the main sealing ring 5 is firmly positioned, preventing displacement during compression and improving the overall sealing performance of the system. Second mounting positions 202 that match the short sealing spring 402 are provided on the outer sides of the front and rear ends of the cover 2, and first mounting positions 203 that match the long sealing spring 302 are provided on the outer sides of the left and right ends. The second mounting positions 202 and the first mounting positions 203 provide precise locking points for the clamp assembly, enabling rapid assembly and uniform compression in conjunction with spring force. This ensures balanced force on the main sealing ring 5 and the optical cable seal 1, thereby achieving IP-68 level sealing for the optical cable 7 and the entire system, meeting the long-term reliability requirements in complex outdoor environments.

[0039] Through the above design, the optical cable sealing structure of this embodiment utilizes the X-shaped through hole 103 and the groove 102 to achieve fast and convenient sealing of large-diameter optical cables. Combined with low-hardness materials and clamp locking mechanism, it reduces assembly difficulty and construction intensity. The positioning groove 101, U-shaped groove 603 and limiting groove 201 ensure precise alignment of each component. With the main sealing ring 5 and spring-driven clamp assembly, it achieves efficient and reliable sealing, perfectly solving the pain points of traditional solutions. It is suitable for high-density fiber optic access scenarios such as 5G base stations and building weak current wells.

[0040] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0041] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0042] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A micro-junction box optical cable sealing structure, characterized in that: The device includes a base (6), with long clamp assemblies (3) movably installed at the left and right ends of the base (6), and short clamp assemblies (4) movably installed at the front and rear ends of the base (6). Optical cable seals (1) are movably installed at the front and rear ends of the base (6) and inside the two short clamp assemblies (4). A cover (2) is movably installed at the top of the base (6) through the long clamp assemblies (3) and the short clamp assemblies (4). A main sealing ring (5) is movably installed between the cover (2) and the base (6). Optical cables (7) are inserted through the two optical cable seals (1).

2. The micro-junction box optical cable sealing structure according to claim 1, characterized in that: The long clamp assembly (3) includes a long sealing plate (301), and a first locking position (3011) is provided at the bottom of the outer side of the long sealing plate (301). A long sealing plate spring (302) is rotatably connected inside the first locking position (3011).

3. The micro-junction box optical cable sealing structure according to claim 2, characterized in that: The short clamp assembly (4) includes a short sealing plate (401), and a second locking position (4011) is provided on the outer side of the bottom end of the short sealing plate (401). A short sealing plate spring (402) is rotatably connected inside the second locking position (4011).

4. The micro-junction box optical cable sealing structure according to claim 3, characterized in that: The outer surfaces of both the left and right ends of the base (6) are provided with first slots (601) that are compatible with the long sealing plate springs (302). The two sets of long clamp assemblies (3) are respectively rotatably installed on the left and right ends of the base (6) through the two sets of long sealing plate springs (302).

5. The micro-junction box optical cable sealing structure according to claim 4, characterized in that: The outer surfaces of both the front and rear ends of the base (6) are provided with second slots (602) that are compatible with the short sealing plate springs (402). The two sets of short clamp assemblies (4) are respectively rotatably installed at the front and rear ends of the base (6) through the two sets of short sealing plate springs (402).

6. The micro-junction box optical cable sealing structure according to claim 5, characterized in that: The base (6) has U-shaped grooves (603) symmetrically opened at both ends and on the left and right sides of the second slot (602), and the optical cable seal (1) is inserted into the U-shaped groove (603).

7. The micro-junction box optical cable sealing structure according to claim 6, characterized in that: The outer surface of the optical cable seal (1) is provided with a positioning groove (101) that is adapted to the U-shaped groove (603). The middle part of the optical cable seal (1) is provided with an X-shaped through hole (103). A groove (102) is provided on one side of the X-shaped through hole (103), and the outer side of the groove (102) communicates with the positioning groove (101).

8. The micro-junction box optical cable sealing structure according to claim 7, characterized in that: The lower surface of the cover (2) is provided with a limiting groove (201) that is compatible with the main sealing ring (5). The outer sides of the front and rear ends of the cover (2) are provided with a second mounting position (202) that is compatible with the short sealing plate spring (402). The outer sides of the left and right ends of the cover (2) are provided with a first mounting position (203) that is compatible with the long sealing plate spring (302).

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