Waterproof structure and optical cable distribution box

Abstract

The utility model relates to a waterproof structure and an optical cable distribution box, and relates to the technical field of communication equipment. The optical cable distribution box comprises a box body, a box cover and the optical cable distribution box waterproof structure. The waterproof structure of the optical cable distribution box comprises a base and a pressing block, a sealing opening is formed in the side wall of the box body, clamping strips are arranged on the two sides of the base and the pressing block, clamping grooves allowing the base and the pressing block to be inserted are formed in the side walls, on the two sides of the sealing opening, of the box body, a first channel allowing an optical cable to penetrate is formed in the base, clamping protruding blocks are arranged on the two sides of the base, and fixing protruding blocks are arranged on the inner wall of the box body. When the optical cable is sealed, after the clamping strip of the base is aligned with the clamping groove and inserted into the sealing opening, the upper surface of the clamping protruding block abuts against the lower surface of the fixing protruding block, the base is fixed to the box body, and when the optical cable is placed into the first channel and then the pressing block is inserted into the sealing opening, the pressing block elastically deforms to press the optical cable located in the first channel. The situation that clamping is not in place when the multiple layers of bases and the pressing blocks are stacked can be reduced.

Description

Technical Field

[0001] This application relates to the technical field of communication equipment, and particularly relates to a waterproof structure for an optical cable splitting box. Background Art

[0002] An optical cable splitting box is a distribution and branching device for user terminals in an FTTH system. It is usually used outdoors, in corridors or indoors to connect the backbone optical cable and the distribution optical cable, and can realize functions such as fiber splicing, distribution and scheduling. The optical fiber splitting box must be able to work reliably in the specified environment, and its sealing performance must meet the following requirements: 1) The protection performance of the indoor box body must meet the IP53 level requirements in GB4208-2008; 2) The protection performance of the outdoor box body must meet the IP55 level requirements in GB4208-2008.

[0003] Existing optical cable splitting boxes usually use sealing strips or fillers to seal the connection between the box cover and the box body. For the seal between the optical cable and the box body, in the prior art, a sealing press block is usually provided above the optical cable channel, and the optical cable is sealed with the box body by pressing the optical cable with the sealing press block. However, when there are multiple layers of optical cable channels and corresponding multiple layers of sealing press blocks are provided, each layer of sealing press block is directly stacked on the optical cable channel. When stacked in multiple layers, the situation where a certain layer of sealing press block is not properly clamped may occur, thus affecting the pressing of the optical cable. Utility Model Content

[0004] In order to solve the problem that the sealing press block is not properly clamped when multiple layers of sealing press blocks are provided, this application provides a waterproof structure for an optical cable splitting box.

[0005] A waterproof structure for an optical cable splitting box provided by this application adopts the following technical solutions:

[0006] A waterproof structure for an optical cable splitting box includes a base and a press block. The base and the press block are arranged on the box body. A sealing port for inserting the base and the press block is opened on the side wall of the box body. The base has a first channel for the optical cable to pass through. The base includes an inner base extending into the box body. Both sides of the inner base have clamping convex blocks. The inner wall of the box body has fixing convex blocks extending into the box body. The upper surface of the clamping convex block abuts against the lower surface of the fixing convex block. The press block presses the optical cable located in the first channel.

[0007] By adopting the above technical solutions, after the base is inserted into the sealing port, the upper surface of the clamping convex block abuts against the lower surface of the fixing convex block, and the base is fixed on the box body. When the optical cable is placed in the first channel and then the press block is inserted into the sealing port, the press block undergoes elastic deformation to press the optical cable located in the first channel. The abutment of the clamping convex block and the fixing convex block fixes the base on the box body. When multiple layers of bases are stacked, each layer of the base is fixed. Therefore, the situation where the upper press block is not properly clamped during installation can be reduced.

[0008] Preferably, the two sides of the base and the pressing block are provided with clamping bars, and the side walls of the box body on both sides of the sealing port are provided with clamping grooves for inserting the clamping bars.

[0009] Preferably, the maximum width of the clamping bar is greater than the width of the opening of the clamping groove on the side wall of the box body.

[0010] Preferably, there are at least two bases, the number of pressing blocks is equal to the number of bases, the bases and the pressing blocks are distributed at intervals, and except for the bottommost base and the topmost pressing block, in the direction away from the bottommost base, each pressing block and the adjacent base above it are integrally provided.

[0011] Preferably, the bottom of the pressing block has a second channel, and the second channel and the first channel enclose an annular structure to form an optical cable channel for the optical cable to pass through. The inner diameter of the optical cable channel is smaller than the diameter of the optical cable, and the pressing block presses the optical cable located in the optical cable channel.

[0012] Preferably, the clamping projection includes a mounting plate and a resisting block. The resisting block is arranged at one end of the mounting plate. The resisting block presses against the fixed projection. The other end of the mounting plate is fixed on the inner base, and the two ends of the mounting plate are close to each other so that the resisting block is separated from the fixed projection.

[0013] Preferably, the connection part between the mounting plate and the inner base has a first reinforcing rib, and the reinforcing rib is used to increase the connection strength between the mounting plate and the inner base. The connection part between the resisting block and the mounting plate has a second reinforcing rib, and the second reinforcing rib is used to increase the connection strength between the resisting block and the mounting plate.

[0014] Preferably, the fixed projection has a guiding surface, and the guiding surface inclines towards the inside of the box along the insertion direction of the pressing block. The clamping projection slides along the guiding surface to abut against the lower surface of the fixed projection.

[0015] Preferably, the base further includes an outer base extending out of the box body. The outer base is provided with a limiting block. The limiting block is located above the first channel. The inner surface of the limiting block is an arc surface that fits the surface of the optical cable. The inner surface of the limiting block has several protrusions, and the protrusions are used to squeeze the optical cable.

[0016] Preferably, a waterproof optical cable splitting box includes a box body and a box cover, and the box body has the waterproof structure of the optical cable splitting box as described above.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] When the base and the pressing block are inserted into the sealing port, the clamping bump abuts against the fixing bump to fix the base and the pressing block, reducing the situation where the clamping is not in place when multiple layers of bases and pressing blocks are stacked;

[0019] The optical cable is easy to install. Install it in the order of the base, the optical cable, and the pressing block. There is no need to thread the optical cable through the optical cable channel, and the optical cable is not easily damaged;

[0020] The base and the pressing block are easy to install. When inserting the base and the pressing block, the guiding surface facilitates the directional sliding of the clamping bump to the lower surface of the fixing bump. When pulling out the base and the pressing block, pinch the two side mounting plates to make the two ends of the mounting plate approach each other, and then the base and the pressing block can be pulled out. Description of the Drawings

[0021] Figure 1 It is an exploded view of a waterproof structure and an optical cable distribution box in an embodiment of the present application.

[0022] Figure 2 It is a structural view of a waterproof structure and an optical cable distribution box in an embodiment of the present application.

[0023] Figure 3 It is a top view of a waterproof structure and an optical cable distribution box in an embodiment of the present application

[0024] Figure 4 It is a structural view of the base and the pressing block in an embodiment of the present application.

[0025] Figure 5 It is a structural view of the limiting block in an embodiment of the present application.

[0026] Figure 6 It is an exploded view of the base and the pressing block when there is one base in an embodiment of the present application.

[0027] Figure 7 It is an exploded view of the base and the pressing block when there are at least two bases in an embodiment of the present application.

[0028] Figure 8 It is an exploded view of a waterproof structure and an optical cable distribution box from another perspective in an embodiment of the present application.

[0029] Description of the Reference Numerals: 1. Base; 2. Pressing block; 3. Box body; 31. Sealing port; 11. First channel; 12. Clamping bump; 32. Fixing bump; 4. Card strip; 33. Card slot; 13. Inner base; 14. Outer base; 15. Connecting seat; 121. Mounting plate; 122. Supporting block; 5. Box cover; 321. Guiding surface; 123. First reinforcing rib; 124. Second reinforcing rib; 141. Limiting block; 142. Protrusion;

[0030] 21. Second channel; 6. Optical cable channel; 7. First base; 8. First pressing block; 9. Sealing component. Detailed implementation mode

[0031] The following will further elaborate on this application in conjunction with the attached Figure 1-8 drawings for a more detailed description.

[0032] An embodiment of this application discloses a waterproof structure for an optical cable fiber distribution box. Referring to Figure 1 and Figure 2 , the waterproof structure of the optical cable fiber distribution box includes a base 1 and a pressing block 2. A sealing opening 31 for inserting the base 1 and the pressing block 2 is formed on the side wall of the box body 3. The base 1 has a first channel 11 for placing the optical cable, and the pressing block 2 is used to press on the base 1 to clamp the optical cable tightly. Both sides of the base 1 have clamping protrusions 12, and the inner wall of the box body 3 has fixing protrusions 32 extending into the box body 3. After the base 1 is inserted into the sealing opening 31, the upper surface of the clamping protrusion 12 abuts against the lower surface of the fixing protrusion 32, and the base 1 and the box body 3 are fixed. After the optical cable is placed in the first channel 11, the pressing block 2 is inserted into the sealing opening 31 to clamp the optical cable tightly.

[0033] Referring to Figure 1 and Figure 3 , both sides of the base 1 and the pressing block 2 have clamping strips 4, and the side walls of the box body 3 on both sides of the sealing opening 31 have slots 33 for inserting the clamping strips 4. When installing the base 1 and the pressing block 2, the clamping strips 4 on both sides of the base 1 and the pressing block 2 are respectively aligned with the slots 33 and inserted. When the upper surface of the clamping protrusion 12 abuts tightly against the lower surface of the fixing protrusion 32, it indicates that the clamping is in place. In order to prevent the elastic deformation of the base 1 and the pressing block 2 when the pressing block 2 clamps the optical cable, resulting in the displacement of the clamping strip 4 and the displacement of the slot 33, causing a gap between the clamping strip 4 and the slot 33, the maximum width of the clamping strip 4 is greater than the width of the opening of the slot 33 on the side wall of the box body 3. A preferred method is that the clamping strip 4 has two widths, and the width of the clamping strip 4 increases from small to large along the direction away from the sealing block. Therefore, the clamping strip 4 with a large width can abut against the side wall of the box body 3 to prevent the displacement of the clamping strip 4 and the appearance of a gap between the clamping strip 4 and the slot 33.

[0034] Referring to Figure 1 and Figure 4, the base 1 includes an inner base 13, an outer base 14, and a connecting base 15. The inner base 13 is the part of the base 1 extending into the box body 3. The clamping bump 12 is integrally provided on the upper surface of the inner base 13, and the clamping bump 12 is located on the side walls of the box body 3 near both sides of the sealing port 31. The clamping bump 12 includes a mounting plate 121 and a resisting block 122. The mounting plate 121 extends along the inner base 13 in a direction away from the inner base 13. One end of the mounting plate 121 is fixed to the inner base 13, and the resisting block 122 is integrally provided at the other end of the mounting plate 121. The top end of the mounting plate 121 does not contact the box cover 5 to prevent the box cover 5 from pressing down on the mounting plate 121, so that the resisting block 122 is disengaged from the fixing bump 32. The fixing bump 32 is located on the inner wall of the box body 3 on both sides of the sealing port 31, and the fixing bump 32 has a guiding surface 321, and the guiding surface 321 is an inclined surface inclined towards the inside of the box body 3 along the insertion direction of the pressing block 2.

[0035] Referring to Figure 1 and Figure 2 , when installing the base 1, insert the base 1 into the sealing port 31, the resisting block 122 slides along the guiding surface 321, and the mounting plate 121 deforms under force. When the resisting block 122 moves out of the guiding surface 321, the mounting plate 121 rebounds so that the resisting block 122 abuts against the lower surface of the fixing bump 32. The base 1 is compressed and has a tendency to rebound elastically. The resilience force makes the upper surface of the resisting block 122 tightly abut against the lower surface of the fixing bump 32. At this time, the base 1 is clamped in place, and the base 1 is fixed to the box body 3. When removing the base 1, pinch the top ends of the two side mounting plates 121 to make the top ends of the mounting plates 121 approach each other, so that the resisting block 122 disengages from the lower surface of the fixing bump 32. Since the mounting plate 121 needs to deform under force, a first reinforcing rib 123 is integrally provided at the connection between the mounting plate 121 and the inner base 13 to increase the connection strength between the mounting plate 121 and the inner base 13. Similarly, to prevent the resisting block 122 from breaking and falling off the mounting plate 121, a second reinforcing rib 124 is integrally provided at the connection between the resisting block 122 and the mounting plate 121 to increase the connection strength between the resisting block 122 and the mounting plate 121.

[0036] Referring to Figure 1 and Figure 5, the outer base 14 is the part of the base 1 outside the box body 3. A limit block 141 is provided on the outer base 14. The limit block 141 is arranged above the first channel 11, and at least one is arranged on each first channel 11. The inner surface of the limit block 141 is an arc surface that fits the surface of the optical cable. After the optical cable is placed in the first channel 11, the limit block 141 is fixedly connected to the outer base 14 by bolts or other means, and the optical cable is restricted between the outer base 14 and the limit block 141. When the optical cable is pulled by an external force, the limit block 141 will disperse the force around the part of the optical cable covered by the pressing block 2, and prevent this part of the optical cable from pulling the pressing block 2, so as to maintain the state of the pressing block 2 pressing the optical cable. In addition, several protrusions 142 can be provided on the inner surface of the limit block 141, and the protrusions 142 are used to squeeze the cable sheath of the optical cable to further limit the shaking of the optical cable.

[0037] Refer to Figure 1 and Figure 4 , the connecting seat 15 is the part of the base 1 that connects the inner base 13 and the outer base 14, and is located in the side wall of the box body 3. The clamping strips 4 are located on both sides of the connecting seat 15. When the base 1 is inserted into the sealing port 31, the clamping strips 4 on both sides of the connecting seat 15 are inserted into the card slots 33.

[0038] The bottom of the pressing block 2 has a second channel 21. The second channel 21 and the first channel 11 enclose an annular structure to form an optical cable channel 6 for the optical cable to pass through. The annular structure is preferably a circular ring structure. Further, the inner diameter of the optical cable channel 6 is smaller than the diameter of the optical cable. On this basis, when the pressing block 2 covers the optical cable, the optical cable is squeezed in the optical cable channel 6, the optical cable is in close contact with the optical cable channel 6, and the pressing block 2 is in close contact with the base 1, so that the sealing effect of the optical cable is good.

[0039] Refer to Figure 6 , one base 1 can be provided. In this case, one pressing block 2 is also provided, and one clamping convex block 12 is provided on each side of the inner base 13. When sealing the optical cable, insert the base 1 into the sealing port 31. When the abutting block 122 abuts against the fixed convex block 32, it indicates that the installation is in place. The base 1 is fixed on the box body 3, and then the optical cable is placed in the first channel 11, and the pressing block 2 is inserted into the sealing port 31 and then presses the optical cable.

[0040] Refer to Figure 1 and Figure 7, at least two bases 1 can be provided. In this case, the number of pressing blocks 2 is equal to that of the bases 1, and the bases 1 and the pressing blocks 2 are distributed at intervals. The lowermost base 1 is the first base 71, and the uppermost pressing block 2 is the first pressing block 82. Except for the first base 71 and the first pressing block 82, in the direction away from the first base 71, each pressing block 2 and the adjacent base 1 above it are integrally provided. Specifically, clamping protrusions 12 are provided on both sides of the inner base 13 of the first base 71. The adjacent pressing block 2 above the first base 71 and the adjacent base 1 above this pressing block 2 are integrally provided to form a sealed assembly 9 of base 1 - pressing block 2. In each sealed assembly 9, the base 1 is located above the pressing block 2, and the clamping protrusions 12 are provided on the base 1. When sealing the optical cable, after inserting the first base 71 in place, put the optical cable in, and then insert the sealed assembly 9 into the sealing port 31. When the sealed assembly 9 is clamped and fixed, the optical cable is pressed tightly. And so on, until the first pressing block 82 is pressed on the uppermost base 1 to complete the sealing. In this process, each time the optical cable is put in, the base 1 below the optical cable is fixed, and after the sealed assemblies 9 are inserted in sequence, they are fixed to the box body 3. Therefore, even if there are multiple bases 1 and pressing blocks 2, the bases 1 and the pressing blocks 2 can be clamped in place in sequence to achieve sealing. Moreover, when multiple bases 1 are provided, the superposition of the upper bases 1 and pressing blocks 2 further presses the optical cable below, so that the effect of sealing the optical cable is better.

[0041] The implementation principle of the waterproof structure of the optical cable splitting box in the embodiment of the present application is as follows: When sealing the optical cable, in the case where the base 1 is set to one, insert the first base 71 along the card slot 33 into the sealing port 31. When the upper surface of the abutting block 122 abuts tightly against the lower surface of the fixing protrusion 32, it indicates that the first base 71 is installed in place. Then put the optical cable into the first channel 11, insert the first pressing block 82 along the card slot 33 into the sealing port 31, and the second channel 21 and the first channel 11 form an optical cable channel 6. Then make the first pressing block 82 press the optical cable tightly and stick to the first base 71. When there are multiple bases 1, after the first base 71 is installed and fixed, the sealed assembly 9 is pressed on the first base 71 and clamped and fixed. Then continue to put the optical cable and the sealed assembly 9 in sequence until the first pressing block 82 is pressed on the uppermost optical cable to complete the sealing.

[0042] The embodiment of the present application also discloses a waterproof optical cable splitting box, referring to Figure 8 , which includes the above-mentioned waterproof structure of the optical cable splitting box, as well as the box body 3 and the box cover 5, wherein the box body 3 and the box cover 5 are hinged. The waterproof structure of the optical cable splitting box includes a base 1 and a pressing block 2. A sealing port 31 is opened on the side wall of the box body 3. The base 1 and the pressing block 2 are inserted into the sealing port 31 and then clamped and fixed to the box body 3. The base 1 is used to place the optical cable, and the pressing block 2 is used to press the optical cable tightly. When sealing the optical cable, after the base 1 is installed and fixed, place the optical cable on the base 1 and then press it tightly with the pressing block 2.

[0043] The above are all preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A waterproof structure for an optical cable fiber distribution box, characterized in that, It includes a base (1) and a pressing block (2). The base (1) and the pressing block (2) are arranged on a box body (3). A sealing opening (31) for inserting the base (1) and the pressing block (2) is formed on the side wall of the box body (3). The base (1) has a first channel (11) for the optical cable to pass through. The base (1) includes an inner base (13) extending into the box body (3). Both sides of the inner base (13) have clamping protrusions (12). The inner wall of the box body (3) has fixing protrusions (32) extending into the box body (3). The upper surface of the clamping protrusion (12) abuts against the lower surface of the fixing protrusion (32). The pressing block (2) presses the optical cable located in the first channel (11).

2. The waterproof structure of the optical cable fiber distribution box according to claim 1, wherein: Both sides of the base (1) and the pressing block (2) have clamping strips (4). The side walls of the box body (3) on both sides of the sealing opening (31) have clamping grooves (33) for inserting the clamping strips (4).

3. The waterproof structure of the optical cable fiber distribution box according to claim 2, characterized in that: The maximum width of the clamping strip (4) is greater than the width of the opening of the clamping groove (33) on the side wall of the box body (3).

4. The waterproof structure of the optical cable fiber distribution box according to claim 1, characterized in that: There are at least two bases (1). The number of the pressing blocks (2) is equal to the number of the bases (1). The bases (1) and the pressing blocks (2) are distributed at intervals. Except for the bottommost base (1) and the topmost pressing block (2), in the direction away from the bottommost base (1), each pressing block (2) and the adjacent base (1) above it are integrally arranged.

5. The waterproof structure of the optical cable fiber distribution box according to claim 1, wherein: The bottom of the pressing block (2) has a second channel (21). The second channel (21) and the first channel (11) enclose an annular structure to form an optical cable channel (6) for the optical cable to pass through. The inner diameter of the optical cable channel (6) is smaller than the diameter of the optical cable. The pressing block (2) presses the optical cable located in the optical cable channel (6).

6. The waterproof structure of the optical cable fiber distribution box according to claim 1, characterized in that: The clamping protrusion (12) includes a mounting plate (121) and a resisting block (122). The resisting block (122) is arranged at one end of the mounting plate (121). The resisting block (122) abuts against the fixing protrusion (32). The other end of the mounting plate (121) is fixed on the inner base (13). The two ends of the mounting plate (121) are close to each other so that the resisting block (122) is separated from the fixing protrusion (32).

7. The waterproof structure of the optical cable fiber distribution box according to claim 6, characterized in that: A first reinforcing rib (123) is provided at the connection between the mounting plate (121) and the inner base (13). The reinforcing rib is used to increase the connection strength between the mounting plate (121) and the inner base (13). A second reinforcing rib (124) is provided at the connection between the resisting block (122) and the mounting plate (121). The second reinforcing rib (124) is used to increase the connection strength between the resisting block (122) and the mounting plate (121).

8. The waterproof structure of the optical cable fiber distribution box according to claim 1, wherein: The fixing protrusion (32) has a guiding surface (321). The guiding surface (321) inclines towards the inside of the box body (3) along the insertion direction of the pressing block (2). The clamping protrusion (12) slides along the guiding surface (321) to abut against the lower surface of the fixing protrusion (32).

9. The waterproof structure of the optical cable fiber distribution box according to claim 1, characterized in that: The base (1) further includes an outer base (14) extending outside the box body (3). The outer base (14) is provided with a limiting block (141). The limiting block (141) is located above the first channel (11). The inner surface of the limiting block (141) is an arc surface that fits the surface of the optical cable. The inner surface of the limiting block (141) has a plurality of protrusions (142), and the protrusions (142) are used to squeeze the optical cable.

10. A waterproof fiber optic cable distribution box, characterized in that, It includes a box body (3) and a box cover (5). The box body (3) has the waterproof structure for the optical cable splitting box as described in any one of claims 1-9.

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