A waterproof sealing structure of a communication cable splice closure

Abstract

The utility model discloses a kind of communication optical cable jointing box waterproof sealing structure, the upper box body and lower box body are symmetrically distributed with through hole being set on, the inner wall of each through hole and close to the inside and outside two sides are equipped with arc convex edge, and the inner wall of each through hole is uniformly equidistant with multiple arc protrusions distribution.The utility model is through upper box body multiple sealing strip and lower box body sealing groove, multiple sealing strip and sealing groove one-to-one embedding can form multiple waterproof barriers;Through hole place sealing rubber ring or arc sealing rubber part, size is adapted with through hole, cooperate arc convex edge limit, rubber elasticity and through hole inner wall arc protrusion, can promote close density to fill fine seam, block water vapor;And sealing element and limit piece embedding assembly, two kinds of sealing elements can be flexibly selected according to cable specification and installation environment, cooperate multiple sealing and can isolate water vapor, dust, protect optical cable jointing part.

Description

Technical Field

[0001] This utility model mainly relates to the field of communication optical cable splice box technology, specifically a waterproof and sealed structure for a communication optical cable splice box. Background Technology

[0002] In optical fiber transmission systems, optical fiber splice boxes are core devices for splicing optical cables and protecting the spliced ​​parts. They are widely used in various complex installation scenarios such as overhead, pipeline, and direct burial, and their performance directly affects the stability and reliability of communication transmission.

[0003] Traditional fiber optic splice boxes often use a single sealing strip or a simple sealing structure. The splice points of the box are prone to moisture infiltration due to insufficient sealing barrier, making it difficult to meet the long-term protection requirements in harsh environments. In addition, the through holes where cables enter and exit are often prone to misalignment and loose fit of the seal due to poor fit between the size of the seal and the through hole. This fails to fill tiny gaps, allowing moisture to enter the box through the through hole, causing oxidation of the fiber optic splice, signal attenuation, and even line interruption faults. Utility Model Content

[0004] This utility model provides a significantly different solution to the problem of overly simplistic existing technical solutions. It primarily offers a waterproof sealing structure for a communication optical cable splice box. This addresses the issues raised in the background section regarding traditional optical cable splice boxes, which suffer from insufficient sealing at the splice joints due to the use of a single sealing strip or simple sealing structure, leading to water leakage. Furthermore, the poor compatibility between the cable through-hole seal and the through-hole often results in seal displacement, incomplete fit, and failure to fill gaps, causing moisture intrusion, oxidation of the optical cable splice, signal attenuation, and even line interruption.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a waterproof and sealing structure for a communication optical cable splice box, including an upper box body and a lower box body, wherein a sealing element is provided between the upper box body and the lower box body.

[0006] Both the upper and lower boxes have symmetrically distributed through holes. Each through hole has an arc-shaped protrusion on its inner wall near the inner and outer sides, and multiple arc-shaped protrusions are evenly distributed on the inner wall of each through hole.

[0007] More preferably, the outer wall of the seal is provided with a limiting member, and each through hole on the upper and lower box bodies is provided with an arc-shaped groove that matches the shape of the limiting member.

[0008] More preferably, the sealing element is a sealing rubber ring, the limiting element is a sealing rubber ring, and the limiting element and the sealing element are integrally formed.

[0009] More preferably, the length of the seal matches the distance between the two arc-shaped protrusions inside the through hole, and the outer diameter of the seal matches the inner diameter of the through hole.

[0010] More preferably, the upper box body is provided with multiple first sealing strips and second sealing strips from the inside to the outside, and the top of the lower box body is provided with a first sealing groove and a second sealing groove that correspond one-to-one with the multiple first sealing strips and second sealing strips.

[0011] More preferably, the sealing element is an arc-shaped sealing rubber element, the limiting element is an arc-shaped rigid element, the arc-shaped sealing rubber element and the arc-shaped rigid element are connected to form a set of components, and a total of two sets of components are provided, and one set of components has protrusions at both ends of the arc-shaped rigid element, and the other set of components has grooves at both ends of the arc-shaped rigid element that are inserted and matched with the protrusions.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The waterproof sealing structure of the optical cable splice box utilizes multiple sealing strips on the upper box and sealing grooves on the lower box. These multiple sealing strips and grooves interlock to form multiple independent waterproof barriers, reducing the risk of overall seal failure due to a single point of failure. Whether using a sealing rubber ring or an arc-shaped sealing rubber component at the through-hole, the size of the sealing component is adapted to the through-hole. Combined with the limiting effect of the arc-shaped protrusion, the elasticity of the rubber material, and the arc-shaped protrusion on the inner wall of the through-hole, the tightness of the fit is improved, thus filling tiny gaps and preventing moisture intrusion. The sealing component is assembled by interlocking with limiting components. Both sealing component designs can be flexibly selected according to cable specifications and installation environment. This multi-layered sealing design effectively isolates moisture, dust, and other impurities, preventing corrosion of the optical cable splice area.

[0013] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the exploded structure of this utility model; Figure 3 In this utility model Figure 2 Enlarged structural diagram at point A in the diagram; Figure 4 This is an enlarged structural diagram of the upper box of this utility model; Figure 5 This is an enlarged structural diagram of the sealing element in another embodiment of the present invention.

[0015] Numbering on the map: 1. Upper box body; 101. First sealing strip; 102. Second sealing strip; 2. Lower box body; 201. Through hole; 202. Arc-shaped raised edge; 203. Arc-shaped protrusion; 204. Arc-shaped groove; 205. First sealing groove; 206. Second sealing groove; 3. Sealing element; 301. Limiting element. Detailed Implementation

[0016] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0017] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0018] Please refer to the appendix carefully. Figures 1-5 A waterproof sealing structure for a communication optical cable splice box includes an upper box body 1 and a lower box body 2, with a sealing element 3 provided between the upper box body 1 and the lower box body 2.

[0019] Both the upper box 1 and the lower box 2 have symmetrically distributed through holes 201. Each through hole 201 has an arc-shaped protrusion 202 on its inner wall near the inner and outer sides, and multiple arc-shaped protrusions 203 are evenly distributed on the inner wall of each through hole 201.

[0020] In this embodiment, as Figure 2 and Figure 3 As shown, the outer wall of the sealing element 3 is provided with a limiting element 301, and each through hole 201 on the upper box 1 and the lower box 2 is provided with an arc-shaped groove 204 that matches the shape of the limiting element 301.

[0021] With the above structure, the limiting member 301 on the outer wall of the seal 3 cooperates with the arc groove 204 in the through hole 201 to achieve positioning, which can avoid sealing failure caused by the installation misalignment of the seal 3. In addition, the length of the seal 3 matches the distance between the two arc protrusions 202 in the through hole 201, and the outer wall diameter matches the inner wall diameter of the through hole 201, so that the seal 3 fits tightly with the inner wall of the through hole 201, forming a waterproof barrier.

[0022] In this embodiment, as Figure 5As shown, the sealing element 3 is a sealing rubber ring, and the limiting element 301 is a sealing rubber ring, and the limiting element 301 and the sealing element 3 are integrally formed.

[0023] With the above structure, the sealing element 3 and the limiting element 301 are made of sealing rubber material. By utilizing the excellent elastic properties of rubber itself, the gaps generated during the assembly process can be compensated. When the junction box is used, the sealing element 3 can form a tight contact with the cable and the box body. By filling the tiny gaps through elastic deformation, the sealing effect can be improved.

[0024] In this embodiment, as Figure 2 and Figure 3 As shown, the length of the seal 3 matches the distance between the two arc-shaped protrusions 202 inside the through hole 201, and the outer wall diameter of the seal 3 matches the inner wall diameter of the through hole 201.

[0025] Through the above structure, the arc-shaped protrusion 202 limits the sealing element 3, which can prevent it from shifting due to vibration and other factors during long-term use. In conjunction with the arc-shaped protrusion 203, it can increase the contact friction and tightness between the sealing element 3 and the inner wall of the through hole 201 and the outer wall of the cable. It can also cause the sealing element 3 to undergo elastic deformation under pressure, fill the tiny gaps, and thus improve the waterproof sealing performance at the through hole 201.

[0026] In this embodiment, as Figure 2 , Figure 3 and Figure 4 As shown, the upper box 1 is provided with multiple first sealing strips 101 and second sealing strips 102 from the inside to the outside, and the top of the lower box 2 is provided with a first sealing groove 205 and a second sealing groove 206 that correspond to and cooperate with the multiple first sealing strips 101 and second sealing strips 102.

[0027] Through the above structure, the multiple first sealing strips 101 and second sealing strips 102 arranged from the inside to the outside of the upper box 1 cooperate with the first sealing groove 205 and second sealing groove 206 correspondingly opened on the top of the lower box 2, thereby forming multiple independent waterproof defense lines. When the outer sealing mechanism fails due to accidental damage, the inner sealing can still play a sealing role, which can improve the waterproof effect of the splice box and prevent the internal optical cable splice parts from being corroded by water vapor.

[0028] In another embodiment: In this embodiment, as Figure 5 As shown, the sealing element 3 is an arc-shaped sealing rubber element, and the limiting element 301 is an arc-shaped rigid element. The arc-shaped sealing rubber element and the arc-shaped rigid element are connected to form a set of components. There are two sets of components in total. One set of components has protrusions at both ends of the arc-shaped rigid element, and the other set of components has grooves at both ends of the arc-shaped rigid element that are inserted and matched with the protrusions.

[0029] Through the above structure, the design of the two sets of arc-shaped components allows the seal 3 and the limiting component 301 to be engaged by the protrusions and grooves at both ends of the arc-shaped rigid component to form a complete annular sealing structure. Compared with the overall annular component, it is easier to install into the through hole 201, especially suitable for assembly scenarios with limited space. The arc-shaped sealing rubber component has excellent elasticity and, in conjunction with the arc-shaped protrusions 203 on the inner wall of the through hole 201, makes multiple points of close contact, which can fit tightly with the inner wall of the through hole 201 and the outer wall of the cable, filling the gap to block the intrusion of water vapor. The arc-shaped rigid component can be embedded in the arc-shaped groove 204 for positioning, which can improve the friction and fit between the seal 3, the through hole 201, and the cable, thereby improving the waterproof sealing performance at the through hole 201 and protecting the optical cable splice from water vapor erosion.

[0030] The specific operating procedure of this utility is as follows: First, pass the cable through the corresponding sealing element 3. After completing the cable splicing operation, assemble and fix the upper box 1 and the lower box 2 through the screw holes. During this process, the multiple first sealing strips 101 and second sealing strips 102 set from the inside to the outside of the upper box 1 will be fitted one by one with the first sealing groove 205 and the second sealing groove 206 opened on the top of the lower box 2 to form multiple independent waterproof barriers.

[0031] For the through hole 201 for cable entry and exit, there are two embodiments: In the first embodiment, the seal 3 is a sealing rubber ring. The limiting member 301 on its outer wall will fit into the arc groove 204 in the through hole 201 to fix the installation position of the seal 3. The length of the seal 3 matches the distance between the two arc protrusions 202 in the through hole 201. The outer wall diameter matches the inner wall diameter of the through hole 201, so that the seal 3 fits tightly with the inner wall of the through hole 201. The arc protrusions 202 can limit the seal 3. The rubber material has excellent elasticity. Combined with the evenly distributed arc protrusions 203 on the inner wall of the through hole 201, it can increase the contact friction and tightness between the seal 3 and the inner wall of the through hole 201 and the outer wall of the cable. This allows the seal 3 to undergo elastic deformation under pressure, fill the tiny gaps, and improve the waterproof sealing performance of the through hole 201.

[0032] In Embodiment 2, the sealing element 3 is an arc-shaped sealing rubber element, and the limiting element 301 is an arc-shaped rigid element. The limiting element 301 is connected to the sealing element 3 and forms a set of components. There are two sets in total. One set of components has protrusions at both ends of the arc-shaped rigid element, and the other set of components has grooves at both ends of the arc-shaped rigid element that are adapted to the protrusions. During assembly, a complete ring structure can be formed by the insertion and cooperation of the protrusions and the grooves.

[0033] After assembly, the arc-shaped rigid component is positioned by embedding the arc-shaped groove 204 into the through hole 201. The arc-shaped sealing rubber component, due to its own elasticity, deforms elastically under pressure, and cooperates with the arc-shaped protrusion 203 on the inner wall of the through hole 201 to fit tightly against the inner wall of the through hole 201 and the outer wall of the cable. This can improve the friction and fit between the sealing component 3, the through hole 201, and the cable, fill tiny gaps, ensure the reliability of the waterproof seal at the through hole 201, and protect the optical cable splice from water vapor corrosion.

[0034] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A waterproof and sealed structure for a communication optical cable splice box, comprising an upper box body (1) and a lower box body (2), characterized in that: A sealing element (3) is provided between the upper box (1) and the lower box (2); The upper box (1) and the lower box (2) are provided with symmetrically distributed through holes (201). Each through hole (201) has an arc-shaped protrusion (202) on its inner wall and near the inner and outer sides. Each through hole (201) has multiple arc-shaped protrusions (203) evenly distributed at equal intervals on its inner wall.

2. The waterproof sealing structure for a communication optical cable splice box according to claim 1, characterized in that: The outer wall of the sealing element (3) is provided with a limiting element (301), and each through hole (201) on the upper box (1) and the lower box (2) is provided with an arc groove (204) that matches the shape of the limiting element (301).

3. The waterproof sealing structure for a communication optical cable splice box according to claim 2, characterized in that: The sealing element (3) is a sealing rubber ring, and the limiting element (301) is a sealing rubber ring, and the limiting element (301) and the sealing element (3) are integrally formed.

4. The waterproof sealing structure for a communication optical cable splice box according to claim 1, characterized in that: The length of the seal (3) matches the distance between the two arc-shaped protrusions (202) inside the through hole (201), and the outer wall diameter of the seal (3) matches the inner wall diameter of the through hole (201).

5. The waterproof sealing structure for a communication optical cable splice box according to claim 1, characterized in that: The upper box (1) is provided with multiple first sealing strips (101) and second sealing strips (102) from the inside to the outside. The top of the lower box (2) is provided with a first sealing groove (205) and a second sealing groove (206) that correspond one-to-one with the multiple first sealing strips (101) and second sealing strips (102).

6. The waterproof sealing structure for a communication optical cable splice box according to claim 2, characterized in that: The sealing element (3) is an arc-shaped sealing rubber element, and the limiting element (301) is an arc-shaped hard element. The arc-shaped sealing rubber element and the arc-shaped hard element are connected to form a set of components. There are two sets of the components. One set of components has protrusions at both ends of the arc-shaped hard element, and the other set of components has grooves at both ends of the arc-shaped hard element that are inserted and matched with the protrusions.

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