A communication cable joint box sealing and reinforcing device

Abstract

The utility model discloses a kind of communication optical cable joint box sealing reinforcement device, belong to optical cable joint box technical field;The device includes upper cover and lower cover, it is by setting resistance block in upper cover, it is by the first spring drive's elastic reset type sealing ring to be set in lower cover port, the double reinforcement of active down-pressing clamping and passive axial location to optical cable is realized, simultaneously, by setting the dynamic elastic sealing structure of by mutually matched first sealing block, second sealing block and second spring in the junction of upper and lower cover, the self-adapting compensation sealing to box body joint is realized using the sustained elastic force of second spring.The utility model solves the problem that existing technology reinforcement is unreliable, sealing is easy to fail due to aging, has the beneficial effect that reinforcement is stable and reliable, sealing is durable and self-adaptive.

Description

Technical Field

[0001] This utility model relates to the field of optical cable junction box technology, and in particular to a sealing and reinforcement device for communication optical cable junction boxes. Background Technology

[0002] As the backbone of modern information transmission networks, the protection of fiber optic cable splices is crucial. Fiber optic splice closures, as key devices specifically designed to house and protect fiber optic cable splices from external environmental influences, are widely used in communication engineering.

[0003] To ensure the safety of internal fiber optic connectors, existing fiber optic splice closures typically require securing the fiber optic cables entering and exiting the closure. Common securing methods involve using clamps or clips, employing static pressure generated by bolt tightening to hold the cable's outer sheath in place. However, this static securing method, relying solely on initial clamping force, gradually weakens under construction stress, wind vibration, or long-term stress relaxation. This can easily lead to axial movement of the fiber optic cable, posing a serious safety threat to the fragile fiber core inside the closure.

[0004] Meanwhile, the sealing performance of the junction box housing is also one of its core functions. Currently, the sealing between the cover and the body of most junction boxes is achieved by setting static rubber sealing rings or gaskets at the joints. This sealing structure can provide good waterproof and dustproof effects in the initial stage of installation, but over time, the sealing material will undergo permanent deformation due to aging, temperature changes, and continuous compressive stress, losing its original elasticity. Once the elasticity compensation capacity of the sealing material decreases, tiny gaps will appear at the joints of the box, allowing moisture and dust to intrude, seriously affecting communication quality and even causing link interruption.

[0005] In summary, existing optical fiber optic junction boxes generally suffer from a core design flaw: their reinforcement and sealing functions rely excessively on static structures and initial installation stress, lacking dynamic and adaptive compensation capabilities. Under long-term, complex operating conditions, the protective performance of this design will inevitably decline, failing to provide durable and reliable safety assurance.

[0006] Therefore, this utility model proposes a sealing and reinforcement device for communication optical cable junction boxes to overcome the shortcomings of the prior art. Utility Model Content

[0007] To overcome the above deficiencies, this utility model provides a sealing and reinforcement device for communication optical cable junction boxes. It aims to improve the problems existing in the sealing and reinforcement devices for communication optical cable junction boxes, such as unreliable long-term fixation due to the reinforcement structure relying solely on static clamping force, and the decline in sealing performance due to material aging failure of the sealing structure. This utility model aims to provide a sealing and reinforcement device for communication optical cable junction boxes with an improved structure that can effectively solve the above problems.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a sealing and reinforcing device for a communication optical cable junction box, comprising: an upper cover; and a lower cover that is fastened and connected to the upper cover, wherein the lower cover has an optical cable placement groove for placing optical cables inside; the device further comprises a reinforcing component disposed at the port of the upper cover and the lower cover and a sealing component disposed at the junction of the long side of the upper cover and the lower cover.

[0009] The reinforcement assembly is constructed as follows: a pressing block is fixedly connected to the outer side of the upper cover; a mounting block serving as a stationary base is fixedly connected to the inner side of the lower cover; a connecting block is slidably disposed between the mounting block and the port of the lower cover; a sealing ring is fixedly connected to one side of the connecting block; a first spring is disposed between the mounting block and the connecting block, the first spring being used to drive the sealing ring to reset by driving the connecting block after the upper cover and the lower cover are fastened together, so that the end face of the sealing ring abuts against the inner side of the pressing block.

[0010] The sealing assembly is configured such that a second sealing block serving as a shell is fixed at the joint between the upper cover and the lower cover, a first sealing block serving as an inner core is slidably accommodated inside the second sealing block, and a second spring for providing continuous abutment force is connected between the first sealing block and the second sealing block.

[0011] Preferably, the pressing block has an inner groove on the side facing the optical cable placement groove, and a rubber ring is fixedly attached to the inner wall of the inner groove of the pressing block.

[0012] Preferably, the connecting block is integrally formed and connected to the left and right sides of the sealing ring.

[0013] Preferably, the sealing assembly further includes a cylinder, one end of which is fixedly connected to the side of the first sealing block away from its contact surface.

[0014] Furthermore, the cylinder slides through the interior of the second spring to guide and support the second spring.

[0015] Furthermore, the other end of the cylinder can be slidably fitted into a guide groove opened at a corresponding position in the lower cover or the upper cover.

[0016] Preferably, both the first sealing block and the second sealing block are elongated strip structures extending along the length direction of the joint edge of the upper cover and the lower cover.

[0017] Preferably, the device further includes bolts for passing through the upper cover and the lower cover and locking them together.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model, by setting a pressure block on the upper cover and a matching elastic reset sealing ring on the lower cover, when the box cover is closed, the pressure block presses down on the optical cable to form an active clamping, while the elastic reset sealing ring automatically presses against the inner side of the pressure block to form a passive limit. This solves the problem in the prior art where the junction box only relies on a single clamping force to fix the optical cable, which is prone to axial sliding under external force and damage to the internal fiber core. It achieves a dual reinforcement effect combining active clamping and passive limit, greatly improving the fixing reliability and pull-out resistance of the optical cable.

[0020] 2. This utility model, by setting a dynamic sealing component consisting of inner and outer sealing blocks and springs at the joint of the upper and lower covers, utilizes the continuous elastic force of the springs to keep the inner and outer sealing blocks in close contact at all times. This solves the problem that existing junction boxes mostly use static sealing strips, which are prone to permanent deformation due to material aging, thermal expansion and contraction, etc. after long-term use, resulting in a decrease in sealing stress, gaps, and weakened sealing performance. It achieves the technical effect of dynamic compensation and self-adaptive sealing, ensuring that the junction box can maintain long-term, stable, and reliable waterproof and dustproof performance in various environments, and significantly extending the service life of the device. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a sealing and reinforcement device for a communication optical cable junction box proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of the pressing block part of the sealing and reinforcing device for a communication optical cable junction box proposed in this utility model;

[0023] Figure 3 for Figure 2 Enlarged view of point A in the image;

[0024] Figure 4 for Figure 2 Enlarged view of point B in the image;

[0025] Figure 5 This is a schematic diagram of the rubber ring structure of a sealing and reinforcing device for a communication optical cable junction box proposed in this utility model.

[0026] Legend:

[0027] 1. Top cover; 2. Bottom cover; 3. Bolt; 4. Reinforcing component; 401. Pressing block; 402. Rubber ring; 403. Sealing ring; 404. Connecting block; 405. First spring; 406. Mounting block; 5. Sealing component; 501. First sealing block; 502. Second sealing block; 503. Cylindrical part; 504. Second spring; 6. Optical cable placement slot. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please refer to Figures 1 to 5 This utility model provides a sealing and reinforcement device for optical cable junction boxes, which aims to solve the problems of unreliable reinforcement of optical cable junction boxes due to a single fixing method and easy failure of static sealing structures after long-term use in the prior art.

[0030] like Figure 1 As shown, the communication optical cable junction box sealing and reinforcement device includes a lower cover 2 and an upper cover 1 that is fastened to the lower cover 2. The lower cover 2 serves as the mounting base for the entire device. The interior of the lower cover 2 is provided with an optical cable placement slot 6 for placing optical cables. The upper cover 1 is used to cover the lower cover 2, together forming a closed cavity for protecting the internal optical cable junction.

[0031] To achieve reliable reinforcement and sealing of the optical cable, the device is equipped with reinforcement components 4 at the ports of the lower cover 2 and the upper cover 1, and sealing components 5 are symmetrically arranged at the joint of the long sides of the lower cover 2 and the upper cover 1.

[0032] Reference Figure 2 , Figure 3 and Figure 4The reinforcing component 4 includes a pressing block 401 fixedly connected to the outside of the upper cover 1 and facing the optical cable placement groove 6. In cooperation with the pressing block 401, a set of elastically resettable components is provided at the port of the lower cover 2. Specifically, the lower cover 2 has an installation block 406 fixedly connected inside as a static base, a connecting block 404 slidably disposed between the installation block 406 and the port of the lower cover 2, a sealing ring 403 fixedly connected to one side of the connecting block 404 by an integral molding method, a first spring 405 disposed between the installation block 406 and the connecting block 404, and the two ends of the first spring 405 abutting against the installation block 406 and the connecting block 404 respectively. To further enhance the fixing effect, an inner groove is provided on the side of the pressing block 401 facing the optical cable placement groove 6, and a rubber ring 402 for increasing friction is attached and fixed to the inner wall of the inner groove.

[0033] The sealing assembly 5 includes a second sealing block 502 fixed to the joint edge of the lower cover 2 and the upper cover 1, serving as a housing. The interior of the second sealing block 502 slidably accommodates a first sealing block 501, which serves as a sealing core. A second spring 504 for providing continuous abutment force is connected between the first sealing block 501 and the second sealing block 502. To ensure the stability and guidance of the sliding process of the first sealing block 501, the sealing assembly 5 also includes a cylinder 503. One end of the cylinder 503 is fixedly connected to the side of the first sealing block 501 away from its abutment surface. The cylinder 503 is slidably inserted into the interior of the second spring 504. The other end of the cylinder 503 is slidably engaged in a guide groove opened at a corresponding position in the lower cover 2 or the upper cover 1. Finally, the device is fixed as a whole by several bolts 3 for passing through the upper cover 1 and the lower cover 2 and locking them together.

[0034] A pressing block 401 is fixedly connected to the outer side of the upper cover 1. An inner groove is provided on the side of the pressing block 401 facing the optical cable placement groove 6, and a rubber ring 402 is attached and fixed on the inner wall of the inner groove. The function of the pressing block 401 is to apply an active clamping force from the outer periphery of the optical cable through the rubber ring 402 when the upper cover 1 and the lower cover 2 are fastened together.

[0035] At the same time, a set of elastically reset limiting mechanism is provided at the port of the lower cover 2. The limiting mechanism uses the mounting block 406 fixedly connected inside the lower cover 2 as a stationary base. A connecting block 404 is slidably provided in front of the mounting block 406. A sealing ring 403 is fixedly connected to one side of the connecting block 404 by integral molding. A first spring 405 is provided between the mounting block 406, which is the stationary base, and the connecting block 404, which is the moving part.

[0036] In the assembled state, when the upper cover 1 is fastened to the lower cover 2, the pressing block 401 of the upper cover 1 first presses down on the optical cable, while the first spring 405 drives the connecting block 404 to reset the sealing ring 403 until the front end face of the sealing ring 403 tightly abuts against the inner end face of the pressing block 401. This double reinforcement structure, consisting of the active pressing and clamping of the pressing block 401 and the passive axial limiting of the sealing ring 403, ensures that the optical cable remains stable even when subjected to external force, effectively preventing displacement and loosening.

[0037] In a preferred embodiment, in order to enhance the clamping friction and buffering protection effect of the pressure block 401 on the optical cable, an inner groove is provided on the side of the pressure block 401 facing the optical cable placement groove 6, and a rubber ring 402 made of elastic material is attached and fixed on the inner wall of the inner groove of the pressure block 401.

[0038] As a specific structure of the reinforcement component 4, in order to ensure the structural stability and reliable force transmission between the connecting block 404 and the sealing ring 403, the connecting block 404 is integrally molded to the left and right sides of the sealing ring 403 to form an integral movable component.

[0039] As a preferred configuration of the sealing assembly 5, in order to provide precise guidance for the sliding of the first sealing block 501 and to support the second spring 504, the sealing assembly 5 also includes a cylinder 503, one end of which is fixedly connected to the side of the first sealing block 501 away from its contact surface.

[0040] Based on the above-mentioned structure of cylinder 503, cylinder 503 is slidably inserted inside the second spring 504. This structure can prevent the second spring 504 from bending or deflecting during compression, and can also ensure that cylinder 503 is always in the center position of the second spring 504 during movement.

[0041] To further stabilize the movement trajectory of the first sealing block 501, the other end of the cylinder 503 is slidably fitted into a guide groove opened at a corresponding position in the lower cover 2 or the upper cover 1. The fit between the guide groove and the cylinder 503 provides a stable and reliable guide for the reciprocating motion of the first sealing block 501.

[0042] In order to perfectly fit the joint edge of the box, both the first sealing block 501 and the second sealing block 502 are long strip-shaped structures that extend along the length direction of the joint edge of the upper cover 1 and the lower cover 2.

[0043] In order to finally securely lock the upper cover 1 and the lower cover 2, and to ensure that the reinforcing component 4 and the sealing component 5 can perform their intended functions, the device also includes several bolts 3 for passing through the upper cover 1 and the lower cover 2 and locking them together.

[0044] Working principle: During installation, the optical cable is first passed through the sealing ring 403 at the port of the lower cover 2 and placed in the optical cable placement groove 6. Before fastening the upper cover 1, the sealing ring 403 and the connecting block 404 need to be manually pushed inward. This action causes the connecting block 404 to squeeze the first spring 405 set between the connecting block 404 and the mounting block 406, causing the first spring 405 to contract, thereby driving the sealing ring 403 to move inward and backward, leaving space for the pressing block 401 of the upper cover 1 to fall.

[0045] Then, the upper cover 1 is fastened to the lower cover 2. During the descent of the upper cover 1, the pressing block 401 of the upper cover 1 falls and is stuck on the outside of the optical cable. The rubber ring 402 in the groove of the pressing block 401 is tightly attached to the surface of the optical cable to form an active clamp. After the cover is closed, the control of the sealing ring 403 is released. The first spring 405, which is in a compressed state, releases its elastic force and pushes the connecting block 404 in the opposite direction, thereby driving the sealing ring 403 to reset outward until the front end face of the sealing ring 403 tightly abuts against the inner end face of the pressing block 401, forming an axial limit and port seal for the optical cable.

[0046] As the upper cover 1 and the lower cover 2 close, the sealing assembly 5 located at the joint edge begins to work. The second sealing blocks 502 of the upper cover 1 and the lower cover 2 come into contact with each other, and then the first sealing blocks 501 inside the second sealing blocks 502 abut against each other tightly. Under the action of the clamping force, the first sealing blocks 501 retract inward and drive the cylinder 503 fixedly connected to them to move along the guide groove. This movement process compresses the second spring 504 sleeved on the cylinder 503. The compressed second spring 504 generates a continuous rebound force, which always pushes the first sealing block 501, ensuring that a dynamic and durable sealing state is formed at the joint of the box.

[0047] Finally, by tightening several bolts 3, the upper cover 1 and the lower cover 2 are securely locked together, completing the sealing and reinforcement installation of the entire device.

Claims

1. A sealing and reinforcing device for a communication optical cable junction box, comprising a top cover (1); and The lower cover (2) is fastened to the upper cover (1), and the interior of the lower cover (2) is provided with an optical cable placement groove (6) for placing optical cables; Its features are, The device is also provided with a reinforcement component (4) and a sealing component (5); The reinforcement component (4) is configured such that: a pressing block (401) is fixedly connected to the outer side of the upper cover (1); a mounting block (406) serving as a stationary base is fixedly connected to the inside of the lower cover (2); a connecting block (404) is slidably disposed between the mounting block (406) and the port of the lower cover (2); a sealing ring (403) is fixedly connected to one side of the connecting block (404); a first spring (405) is disposed between the mounting block (406) and the connecting block (404); the first spring (405) is used to drive the sealing ring (403) to reset by driving the connecting block (404) after the upper cover (1) and the lower cover (2) are fastened together, so that the end face of the sealing ring (403) abuts against the inner side of the pressing block (401); The sealing assembly (5) is configured such that a second sealing block (502) serving as a shell is fixed at the joint between the upper cover (1) and the lower cover (2), a first sealing block (501) serving as an inner core is slidably accommodated inside the second sealing block (502), and a second spring (504) for providing continuous abutment force is connected between the first sealing block (501) and the second sealing block (502).

2. The communication optical cable junction box sealing and reinforcement device according to claim 1, characterized in that, The pressing block (401) has an inner groove on the side facing the optical cable placement groove (6), and a rubber ring (402) for increasing friction is attached and fixed to the inner wall of the inner groove of the pressing block (401).

3. The communication optical cable junction box sealing and reinforcement device according to claim 1, characterized in that, The connecting block (404) is integrally formed and connected to the left and right sides of the sealing ring (403).

4. The communication optical cable junction box sealing and reinforcement device according to claim 1, characterized in that, The sealing assembly (5) also includes a cylinder (503), one end of which is fixedly connected to the side of the first sealing block (501) away from its contact surface.

5. The communication optical cable junction box sealing and reinforcement device according to claim 4, characterized in that, The cylinder (503) slides through the interior of the second spring (504) to guide and support the second spring (504).

6. The communication optical cable junction box sealing and reinforcement device according to claim 4, characterized in that, The other end of the cylinder (503) can be slidably fitted into a guide groove opened at a corresponding position in the lower cover (2) or the upper cover (1).

7. The communication optical cable junction box sealing and reinforcement device according to claim 1, characterized in that, Both the first sealing block (501) and the second sealing block (502) are elongated strip structures extending along the length of the joint edge of the upper cover (1) and the lower cover (2).

8. The communication optical cable junction box sealing and reinforcement device according to claim 1, characterized in that, The device also includes a plurality of bolts (3) for passing through the upper cover (1) and the lower cover (2) and locking the two together.

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