TWI420768B - Communication cable connection box with flexible rubber shrink tube waterproof device - Google Patents

Description

Communication cable connection box with elastic rubber shrink tube waterproof device

The invention relates to a communication cable connecting box with an elastic rubber shrinking tube waterproof device, in particular to a simple and safe construction, no need to use tools, no need to use a fire source, and a wide outer diameter of the applicable cable, which can solve the heat shrinking type in the prior art. After the cable connection box completes the heat-shrinkable tube for waterproofing the inlet and outlet of the cable by fire grilling, and then heat-shrinking the heat-shrinkable tube of the other cable inlet and outlet, it often causes the heat-shrinkable tube adjacent to the grilled to be heated again to soften. A communication cable connection box with an elastic rubber shrink tube waterproof device that is loose and causes problems of water leakage in the connection box.

Due to the deployment of cables in various countries around the world, the pursuit of undergroundization is as much as possible, and the undergroundization of cables is mainly based on pipeline deployment. The cable connection boxes used for cables connecting underground pipelines are placed in underground cables. In the manholes and hand holes of the line pipes, many of the manholes and hand holes are filled with water all the year round, so the connection box placed therein is thus immersed in water all the year round. Please refer to Figure 1 for a cross-sectional view of the cable connection box placed in the underground pipeline. In the first figure, the manholes 111, 121 are arranged below the manhole covers 11, 12, the cable splice boxes 13, 14 are placed in the manholes 111, 121, and the cable splice boxes 13 and 14 are connected by a cable 16. The cable splice boxes 13, 14 are additionally connected to other cable splice boxes (not shown) by cables 15, 17. In practice, the cables 15, 16, 17 in the manholes 111, 121 are crimped. Whether it is a cable or cable used in the cable connection box, if its waterproof effect is not good, the leakage of water in the manhole or hand hole into the connection box will affect the transmission quality of the cable and accelerate the deterioration of the cable, resulting in line transmission. Obstacles and reduced cable life.

In the prior art, in the technical field of cable deployment and connection of various wired transmission industries such as telecommunications, cable television, and monitoring systems, the heat-shrinkable cable connection box has been widely used for many years. Although the heat-shrinkable cable connection box has many advantages such as low manufacturing cost, wide application of the outer diameter of the cable, and quick and easy application, it is widely used in the industry, but the heat-shrinkable cable connection box is more likely to leak water. The problem is the shortcoming of being criticized. Please refer to FIG. 2(A), which is a top view of a conventional heat-shrinkable cable connection box. In Fig. 2(A), the cable entry and exit end faces 21 of the heat-shrinkable cable connection box 20 (referred to as a connection box) have hollow columns 22, 23A, 23B, 23C, 23D, 23E, trunk cable 24A, 24B passes through the hollow tubular string 22 into the junction box 20, between the trunk cables 24A, 24B and is separated by a diverging clip 29 for the heat shrinkable tube. The branch cables 25A, 25B, 25C, 25D, 25E enter the splice box 20 through the hollow stems 23A to 23E, respectively. Please refer to FIG. 2(B) and (C) for a schematic diagram of the waterproof structure treatment of the heat-shrinkable cable connection box of the prior art. In Figs. 2(B) and (C), the heat-shrinkable cable splice cassette 30 (referred to as a splice box) is composed of at least a cover 22, a cable entry/exit end face 31, and hollow stems 32, 33A, 33B. The user first inserts the trunk cables 24A, 24B into the hollow tubular string 32 of the heat shrinkable tube 36, and enters the joint box through the opening 38A. The trunk cables 24A and 24B are separated by a diverging clip for the heat shrinkable tube. Then, the heat-shrinkable tube 36 and the branching clips are fired to complete the waterproof processing of the trunk cables 24A and 24B at the entrance and exit end faces of the connecting box cables. The branch cable 35B penetrates into the hollow box 33B which is covered with the heat shrinkable tube 37, enters the joint box through the opening 38B, and then heats the heat shrinkable tube 33B to complete the branch cable 35B at the end face of the connecting box cable. Waterproof treatment. The connection points of the trunk cables 24A, 24B and the branch cable 35B are accommodated in the cable connection wiring tray 39. However, when the heat-shrinkable tube 37 is grilled by fire, the heat-shrinkable tube 36 which has been grilled adjacent to the heat-shrinkable tube 37 is often softened and loosened by reheating, causing the joint box 30 to leak water. In the same way, when the heat-shrinking tube of 33A is imported and exported by fire grilling other cables, the adjacent heat-shrinkable tube which has been grilled is often softened and loosened due to reheating, and the joint box 30 leaks.

For example, the diameter of the cable entry and exit end face of a communication cable connection box is mostly 15 cm to 20 cm or less, and the cable entry and exit end faces usually need to provide more than 6 cables in and out, so the cable enters and exits the end face. Every cable is very close to each other. Therefore, in the waterproof technology of the current cable inlet and outlet of the heat-shrinkable cable connection box, there is a heat-shrinking tube for completing the first cable inlet and outlet with a fire grill, and then grilling other cables for import and export. When the heat-shrinkable tube is used, it often causes the heat-shrinkable tube adjacent to the grilled to be heated again to soften and loosen, resulting in a problem of water leakage in the joint box. This lack of has been the most troublesome and urgent problem to be solved by the conventional heat-shrinkable cable connection box.

Taking Taiwan's telecom industry as an example, as fiber-optic broadband services have become a trend, Chunghwa Telecom has deployed large-scale optical cables in the past few years and used a large number of cable connection boxes to connect optical cables. Recently, it has announced that it will start in 2009 and continue for 5 consecutive years. In the year, 30 billion yuan will be invested in a total of 150 billion Taiwan dollars for the infrastructure construction of optical fiber networks. In recent years, the company has placed heat-shrinkable cable splice boxes in manholes and hand holes for connecting optical cables. More than half of the ratios are seriously leaking. Due to the unresolved problem of water leakage in the heat-shrinkable cable connection box, the company had to purchase a mechanical cable connection box that was three times more expensive than the heat-shrinkable cable connection box, and was sealed by various mechanical structures. As a cable inlet and outlet waterproof structure, these cable inlet and outlet waterproof structures are suitable for narrow cable outer diameters, diverse and complex parts, complicated construction procedures, and the need to use a variety of tools, resulting in inconvenient construction and high cost. In addition to being as simple as a heat-shrinkable cable connection box, the mechanical cable connection box has also increased the purchase cost by a factor of three. Therefore, if the loss and waterproof function of the heat-shrinkable cable connection box can be improved, the problem that the leakage of the heat-shrinkable cable connection box affects the quality of the line can be avoided, and the cost of the investment of the operator can be greatly reduced.

For the sake of the job, the applicant, based on the lack of knowledge in the prior art, was carefully researched and explored, and a spirit of perseverance, and finally conceived the communication cable connection box with elastic rubber shrink tube waterproof device. The following is a brief description of the case.

In order to overcome the deficiencies of the prior art, an object of the present invention is to provide a communication cable connection box with an elastic rubber shrink tube waterproofing device, the cable connection box comprising a cover and at least one cable entry and exit end face and at least one elastic rubber contraction The cable has at least one hollow tubular end in and out of the end face for at least one cable passing through the at least one hollow tubular string to enter and exit the cable connecting box. When the cable is imported and exported, the elastic rubber shrinking tube (shrinking tube) is placed outside the hollow tube column, and then the cable is sequentially passed through the shrink tube and the hollow tube column to enter the connecting box, and then pumped. A plastic strip is wound around the inner wall of the shrink tube. After the plastic strip is removed, the shrink tube tightly covers the hollow tube string and a portion of the cable that does not pass through the hollow tube string.

The shrink tube is a hollow synthetic rubber tube with rich elasticity and ductility, and the hollow inner wall of the rubber tube is pre-layed with a flexible plastic strip which is flexible and coiled into a threaded tube, and the hollow hole of the rubber tube is expanded, and the shrink tube is The hollowed-out aperture is larger than the outer diameter of the hollow tubular string and the cable that is about to pass through the hollow tubular string. When the plastic strip is removed, the enlarged hollow aperture is immediately elastically contracted and restored to a smaller aperture close to the large front, which is smaller than the hollow tubular string and the cable passing through the hollow tubular string. The outer diameter of the line. The outer portion of the hollow tubular string and a portion of the cable that does not penetrate the hollow tubular string are tightly covered by the shrink tube to form a waterproof structure. The waterproof structure can solve the problem that the heat-shrinkable cable connection box in the prior art is used to complete the heat-shrinkable tube for waterproofing the inlet and outlet of the cable after the fire is grilled, and then the heat-shrinkable tube for importing and exporting other cables by fire is often caused. The heat-shrinkable tube that has been grilled is heated again to soften and loosen, causing the problem of water leakage in the connection box. Because the construction of the invention is simple and safe, no need to use tools, no need to use fire source, wide range of applicable cable outer diameter, etc., the cost of the investment of the operator can be greatly reduced.

The communication cable connection box can be applied to three different forms of communication cable connection, such as linear connection, divergent connection, and divergent connection. Taking the conventional heat-shrinkable cable connection box as an example, when the linear connection and the branch connection operation are performed, the trunk cable and/or the branch cable can pass through a hollow pipe string of the connection box and enter the connection. The connection is carried out in the box. When the diverging operation is carried out in the middle, the trunk cable passes through a hollow tubular string in the form of double cables after being bent, and enters the connecting box to carry out the divergent connection operation in the middle. However, the matching of the different cables is still carried out by a single cable passing through a hollow tubular string into the connecting box for the connection operation. Therefore, when the diverging operation is carried out in the middle of the divergence, unless the cross-section of the two cables of the trunk cable to be diverged in the middle is to be rounded, elliptical or non-grooved in a proper manner, the elasticity is otherwise The rubber shrink tube cannot effectively waterproof the groove between the two cables.

Due to the use of the communication cable connection box, the main cable is introduced first, and then the divergent cable is introduced. Therefore, when the present invention is applied to the divergent connection operation in the middle, the two trunk cables are introduced into the waterproof operation of the hollow tube column of the cable inlet and outlet of the connection box, and the heat-shrinkable tube can be used for waterproof treatment, and the divergent cable is used. The waterproof operation of the line is still waterproofed with an elastic rubber shrink tube. That is, when the first cable is imported and exported when the main cable is introduced, the heat-shrinking tube is used to complete the waterproof treatment after the fire grilling, and after the other other divergent cables are introduced, the elastic rubber shrinking tube is used for waterproof treatment, because The elastic rubber shrinking tube is not required to be waterproofed (not necessary), so the prior art barbecue will never occur after the first cable has been heat-shrinked for import and export, and then the other cables are grilled. When the heat-shrinkable tube is closed, the heat-shrinkable tube adjacent to the grilled surface is heated again to soften and loosen, resulting in a problem of water leakage in the joint box.

After studying the leaky heat-shrinkable cable connection box, we found that the reason for the leakage of the connection box is two: the waterproof structure of the joint between the cover and the cable entrance and exit end; the second hollow tube column and the heat-shrink tube The subsequent portion and the cable and the heat-shrinkable tube are loosened. Therefore, even if the water leakage problem of the waterproof structure at the joint of the cover and the cable entrance and exit end is improved, there are still many joint boxes that continue to leak.

For the second reason mentioned above, the cable will be twisted when the connection box is moved into/out of the manhole or the hand hole for cable reconnection, divergence, maintenance, etc. after the heat shrinking and waterproofing operation is completed. Bending and/or stressing causes the waterproof portion of the heat-shrinkable tube to be loosened, causing the joint box to leak. Generally, the cable coating layer is mostly made of polyethylene. However, the inner layer of the heat-shrinkable tube is used to coat the thermal sol of the cable and the cable polyethylene coating layer has limited bonding strength, and is easily twisted by the cable. Bending and / or stress and loose.

In order to overcome the deficiencies of the prior art, the present invention further adds at least one cable fixing device to the outside of the connecting box, which comprises: a first fixing portion and a second fixing portion. The first fixing portion is fixed to the connecting box, the second fixing portion is connected to the first fixing portion, and the second fixing portion fixes the cable to be introduced into the connecting box. The cable fixing device further includes a support portion connecting the first fixing portion and the second fixing portion. The cable fixing device is made of a material that is strong and not easily deformed by metal, plastic, and combinations thereof. When the cable fixing device fixes the cable, the moving connection box twists and twists the cable which is waterproofed by the heat-shrinkable tube, but the fulcrum of the twisting and bending of the cable is the first of the cable fixing device. Two fixed parts. Since the waterproof portion covered by the heat shrinkable tube is located between the first fixing portion and the second fixing portion, the heat shrinkable tube is not loosened due to the twisting and bending of the cable and the force.

The cable fixing device is not only used for fixing the cable which is waterproofed by the heat-shrinkable tube, but also for fixing the cable for waterproofing of the elastic rubber shrinking tube. The first fixing portion of the cable fixing device may be integrally formed or embedded on the cable entrance and exit end surface, or may be fixed to the connecting box by screwing, bamboo shooting, tight binding clamp, tight band ring, tight band and the like. The second fixing portion may be integrally formed on the first fixing portion or mechanically connected to the first fixing portion. The introduced cable can be fixed to the second fixing portion by a fixing method such as a tight clamp, a tight band, and a tight band. The support portion, the first fixing portion and the second fixing portion are integrally or mechanically connected to each other, the first end of the support portion is connected and fixed to the first fixing portion, and the second end thereof is used for fixing the cable to be introduced, and The cable to be introduced can be fixed to the second end of the support portion by a fixing method such as a tight clamp, a tight band, and a tight band. The cable section not covered by the shrink tube or the heat shrinkable tube, the cable section covered by the shrink tube or the heat shrinkable tube, and the joint of the two parts can be fixed by the cable fixing device. The cable located in the splice box can also be secured using the cable securing device disclosed herein.

The "communication cable connection box with elastic rubber shrinkable tube waterproofing device" proposed in the present application will be fully understood by the following embodiments, so that those skilled in the art can complete it. However, the implementation of the present invention is not limited to the following. The embodiments are intended to be limited to the embodiments, and those skilled in the art can devise other embodiments in accordance with the spirit of the embodiments disclosed herein.

Example 1

Please refer to Fig. 3(A), which is a schematic view of the elastic rubber shrinking tube used in the first embodiment of the present invention. In Fig. 3(A), the elastic rubber shrinkable tube 40 (referred to as a shrink tube) is made of an elastic and ductile ethylene propylene rubber (EPR) tube 41 (hereinafter referred to as a rubber tube) and a rigid polyethylene plastic. The strip 42 (hereinafter referred to as a plastic strip) is composed of a rubber tube 41 having a first opening 411 and a second opening 412. The plastic strip 42 has a first end 421 and a second end 422. The flexible plastic strip 42 is spirally wound around the hollow inner wall of the rubber tube 41 in advance, and the plastic strip 42 supports the hollow aperture of the rubber tube 41, and the hollow aperture is larger than the outer diameter of the hollow tube of the cable connection box and The outer diameter of the cable. The plastic strip 42 is ultrasonically spot welded every 5 cm to increase the tubular strength of the plastic strip 42, and the plastic strip 42 has the property of tearing the solder joint by hand. Further, the plastic strip 42 may be replaced with a rubber strip or a metal strip having a hollow aperture which is flexible and capable of supporting the rubber tube 41.

Please refer to FIG. 3(B) , which is a schematic diagram of a communication cable connection box with an elastic rubber shrink tube waterproof device according to Embodiment 1 of the present invention. In FIG. 3(B), the communication cable connection box 50 (hereinafter referred to as the connection box) is composed of at least the cable entry and exit end face 51, the cover, the hollow tubular string 52, 53 and the elastic rubber shrinkage tube 56, which is hollow. The tubular posts 52, 53 each have an opening (not shown) in the cable entry and exit end face 51 for the cable to pass through the end face into and out of the interior of the splice closure 50. The connection box 50 can be used for linear connection and differential connection of two different types of cable connection. When the waterproof processing of the joint box 50 and the cable joint is performed, the first opening 561 of the elastic rubber shrinking tube 56 (hereinafter referred to as the shrink tube) is first inserted into the hollow tube column 52, and then the cable 54 is sequentially worn. The second opening 562 of the shrink tube 56, the hollow tube column 52, and the inside of the junction box 50 are entered. Then, the first end 571 of the plastic strip 57 passing through the second opening 562 is removed, and the hollow aperture which is enlarged by the plastic strip is immediately contracted and restored to be close to the smaller aperture before being stretched. Moreover, the smaller aperture is smaller than the outer diameter of the hollow tubular string and the outer diameter of the cable. When the plastic strip 57 is continuously removed until the second end 572 of the plastic strip is separated from the shrink tube 56, the shrink tube 56 closely covers the hollow tube string 52 and a portion of the cable 54 to complete the waterproof treatment of the joint box 50. For waterproofing, please continue to refer to Figure 3 (B). After the plastic strip (not shown) is removed, the shrink tube 58 tightly covers the hollow tube column 53 and part of the cable 55 to complete the connection of the cable. Waterproof treatment of the outlet.

The method of Embodiment 1 of the present invention can effectively and individually perform waterproof application for each cable in and out of the connection box, not only does not need (and does not need) to fire the shrink tube, but the user only removes the plastic strip by hand, The shrink tube can be tightly wrapped around the hollow tube string and part of the cable without the use of tools. Furthermore, the shrink tube has flexibility, and when the joint box that completes the waterproof application is placed in the manhole or the cable is twisted due to the relocation of the joint box, the shrink tube will be twisted but will not allow moisture to penetrate into the shrink tube and The junction of the cable and the junction of the shrink tube and the hollow tube string.

Example 2

Please refer to FIG. 4 , which is a schematic diagram of a communication cable connection box with an elastic rubber shrink tube waterproof device according to Embodiment 2 of the present invention. In Fig. 4, the communication cable connection box 60 (hereinafter referred to as the connection box) is at least the cable entry and exit end face 61, the cover 62 (partial), the hollow pipe string 63, 64, 65, the elastic rubber shrink pipe 70, and the heat. The shrink tube 73 and the heat shrink tube are composed of a branching clip 74. The connection box 60 can be used for three different forms of cable connection, such as a straight line connection, a branch connection, and a divergence connection. According to Fig. 2 (A), (B) and the description of the prior art of the present invention, the trunk cables 68, 69 are passed through the hollow tubular string 64 of the heat shrinkable tube 73, and the heat shrinkable tube is sandwiched by the differential clamp 74. The gap between the trunk cables 68, 69, and then the fire grilling heat shrink tubing 73 and the diverging clips 74, complete the waterproof treatment between the trunk cables 68, 69 and the hollow tubing string 64. As for the waterproof treatment of the cable 66 entering and leaving the hollow tubular string 63, as described in the first embodiment, the first opening 701 of the elastic rubber shrinking tube 70 (hereinafter referred to as the shrinking tube) is first inserted into the hollow tubular string 63, and then the cable is The line 66 sequentially passes through the second opening 702 of the shrink tube 70 and the hollow tube string 63 into the interior of the joint box 60. Then, the first end 711 of the plastic strip 57 passing through the second opening 702 is removed, and the hollow aperture expanded by the plastic strip 57 is immediately contracted and restored to a smaller aperture near the front of the support. After the plastic strip 57 is continuously removed to the second end 712 of the plastic strip 57 from the shrink tube 70, the shrink tube 70 closely covers the hollow tube string 63 and a portion of the cable 66 to complete the waterproof treatment of the joint box 60. The results of the water repellent treatment are also referred to the shrink tube 58 of Fig. 4, which is tightly covered with the hollow tube column 65 and a portion of the cable 67 after the plastic strip (not shown) is removed.

Therefore, in the second embodiment of the present case, the user only needs to import and export the first cable when the main cable is introduced, and first adopts a heat-shrinkable tube to complete the waterproof treatment after the fire barbecue, and when other divergent cables are introduced, All of them are waterproofed with elastic rubber shrinking tube, because there is no need (and need not) to barbecue with fire, so the prior art barbecue will never happen after the heat shrinkable tube for the first cable inlet and outlet is completed, and then the fire is grilled. When the heat-shrinkable tube of the other cable is imported and exported, the heat-shrinkable tube adjacent to the grilled water is heated again to be softened and loosened, resulting in leakage of the joint box.

Example 3

The waterproof treatment of the first and second embodiments of the present invention can effectively prevent the connection box from leaking. The user can further fix the cable of the connection box to the outside of the connection box by the cable fixing device, so that the connection box is relocated or When the cable is twisted and flexed, the waterproofness of the joint box is strengthened, and the joint between the cable and the shrink tube is prevented from coming loose.

Please refer to FIG. 5 , which is a schematic diagram of a cable fixing device of the communication cable connection box of Embodiment 3 of the present invention. In FIG. 5, the communication cable connection box 80 (referred to as a connection box) is at least a cable entry and exit end face 81, a cover 82 (partial), and hollow columns 83, 84, 85, elastic rubber shrink tubes 90, 91, and It consists of a cable fixing device. As described in Embodiments 1 and 2, the hollow tubular string 85 for the entry of the trunk cables 88, 89 is covered with a heat shrinkable tube 92 to complete the waterproof treatment between the trunk cables 88, 89 and the hollow tubular string 85; The hollow tubular columns 83, 84, respectively, into which the branch cables 86, 87 enter, are covered with elastic rubber shrink tubes 90, 91 to complete the waterproof treatment between the branch cables 86, 87 and the hollow tubular columns 83, 84.

Continuing to Figure 5, the trunk cables 88, 89 can be further secured by cable fixtures. The cable fixing device outside the connection box 80 can fix the branch cable and/or the trunk cable. The cable fixing device includes: a first fixing portion 98 fixed to the connecting box 80, which passes through a first screw 99 The screw hole (not shown) of the fixing portion 98 is screwed to a screw hole (not shown) on the cable entry and exit end surface 81; and the second fixing portion 100 is connected to the first fixing portion 98, and the second fixing portion 100 is tight The bundle ring 101 fixes the trunk cables 88, 89 which are introduced into the junction box 80 and are waterproofed by the heat shrinkable tubes 92. In addition, the tightening ring 101 can also be used with a tightening jig or a tight band. The cable fixing device further includes a support portion 97 to connect the first fixing portion 98 and the second fixing portion 100. This cable fixing device can also be applied to the fixing of the branch cable covered by the shrink tube.

Continuing to refer to FIG. 5, the branch cable 86 can further be a cable fixing device. The cable fixing device includes: the first fixing portion 93A and a clip 95 through the screw 96 (and another screw, not shown in the fifth The assembly of the figure is to fix the first fixing portion to the outer side of the hollow tube-shrink tube waterproof area; the second fixing portion 93B fixes the cable 86 of the connection box 80 through the screw on the locking beam holder 94. . When the second fixing portion 93B is connected to the first fixing portion 93A, the cable 86 covered by the shrink tube 90 is fixed to the joint box 80, and the effect of waterproofing the shrink tube 90 is further enhanced.

The cable fixing device further includes a supporting portion 93 for connecting the first fixing portion 93A and the second fixing portion 93B. The second fixing portion 93B can be integrally formed on the supporting portion 93. The first fixing portion 93A can be integrally formed on the supporting portion. 93; Alternatively, the first fixing portion 93A, the second fixing portion 93B, and the support portion 93 are integrally formed. Further, the support portion 93 can be coupled to the first fixing portion 93A, and the support portion 93 is fixed to the splice case 80. Similarly, the cable 86 that enters the hollow column 83 and is covered by the shrink tube 90 can also be secured in the same manner.

According to the descriptions of the first, second and third embodiments, the heat-shrinkable cable connection box of the prior art can effectively improve the heat-shrinkable tube for waterproofing the inlet and outlet of the cable, and then grilled by fire. When the heat-shrinkable tube of other cables is imported and contracted, the heat-shrinkable tube adjacent to the grilled heat is softened and loosened again, which causes the lack of water leakage of the connecting box, and the cable is twisted and forced to connect when the connecting box moves. The waterproof structure of the box is loose and leaks. The invention has the advantages of simple and safe construction, no need to use tools, no need to use fire source, wide range of applicable cable outer diameter, and the like, and can greatly reduce the cost of investment by the operator.

This case has been modified by people who are familiar with this skill, but it is not to be protected as intended.

Figure 1

11,12. . . Manhole cover

111, 121. . . Manhole

13, 14. . . Cable connection box

15, 16, 17. . . Cable

Figure 2 (A)

20. . . Heat-shrinkable cable connection box

twenty one. . . Cable entry and exit end

twenty two. . . Hollow tube column

23A, 23B, 23C, 23D, 23E. . . Hollow tube column

24A, 24B. . . Main cable

25A, 25B, 25C, 25D, 25E. . . Divergent cable

29. . . Bifurcation folder

Figure 2 (B), (C)

twenty two. . . Cover

24A, 24B. . . Main cable

30. . . Heat-shrinkable cable connection box

31. . . Cable entry and exit end

32, 33A, 33B. . . Hollow tube column

35B. . . Cable

36, 37. . . Heat shrinkable tube

38A, 38B. . . Hollow tube column opening

39. . . Cable connection panel

Figure 3 (A)

40. . . Elastic rubber shrink tube

41. . . Ethylene propylene rubber tube

42. . . Hard polyethylene plastic strip

421. . . First end

411. . . First opening

412. . . Second opening

422. . . Second end

Figure 3 (B)

50. . . Communication cable connection box

51. . . Cable entry and exit end

52, 53. . . Hollow tube column

54, 55. . . Cable

56. . . Elastic rubber shrink tube

561. . . First opening

562. . . Second opening

57. . . Plastic strip

571. . . First end

572. . . Second end

58. . . Elastic rubber shrink tube

Figure 4

58. . . Elastic rubber shrink tube

60. . . Communication cable connection box

61. . . Cable entry and exit end

62. . . Cover

63, 64, 65. . . Hollow tube column

66, 67. . . Cable

68, 69. . . Main cable

70. . . Elastic rubber shrink tube

57. . . Plastic strip

701. . . First opening

702. . . Second opening

711. . . First end

712. . . Second end

73. . . Heat shrinkable tube

74. . . Bifurcation folder

Figure 5

80. . . Communication cable connection box

81. . . Cable entry and exit end

82. . . Cover

83, 84, 85. . . Hollow tube column

86, 87. . . Divergent cable

88, 89. . . Main cable

94. . . Tight clamp

95. . . Clips

96. . . Screw

93, 97. . . Support department

93A, 98. . . First fixed part

99. . . Screw

90, 91‧‧ ‧ shrink tube

92‧‧‧ heat shrinkable tube

93B, 100‧‧‧Second fixed department

101‧‧‧tight collar

Figure 1 is a schematic cross-sectional view of the cable connection box placed in the underground pipeline.

Fig. 2(A) is a plan view of a heat shrinkable cable splice closure of the prior art.

Fig. 2(B) is a schematic view showing the waterproof structure processing of the heat-shrinkable cable connection box of the prior art.

Fig. 2(C) is a schematic view showing the waterproof structure treatment of the cable-introducing heat-shrinkable cable connection box of the prior art.

Fig. 3(A) is a schematic view showing the elastic rubber shrinkage tube used in the first embodiment of the present invention.

Fig. 3(B) is a schematic view showing the communication cable connection box of the elastic rubber shrinkable tube waterproofing device of the first embodiment of the present invention.

Fig. 4 is a schematic view showing the communication cable connecting box of the elastic rubber shrinkable tube waterproofing device of the second embodiment of the present invention.

Fig. 5 is a schematic view showing the cable fixing device of the communication cable connection box of the third embodiment of the present invention.

51. . . Cable entry and exit end

52, 53. . . Hollow tube column

54, 55. . . Cable

56. . . Elastic rubber shrink tube

561. . . First opening

562. . . Second opening

57. . . Plastic strip

571. . . First end

572. . . Second end

58. . . Elastic rubber shrink tube

Claims (18)

A communication cable connection box with an elastic rubber shrink tube waterproof device, comprising: a cover; a cable entry and exit end face; a first hollow pipe string formed on the cable entry and exit end face away from the cover An elastic rubber shrinking tube; and an auxiliary mounting medium disposed on the inner wall of the elastic rubber shrinking tube, which is removed after a cable is threaded inside the communication cable connecting box to facilitate the elastic rubber The shrink tube tightly covers the first hollow tubular string and the cable exposed to the first hollow tubular string. The cable connection box of claim 1, wherein the cable entry and exit end further comprises a second hollow pipe string for accessing the cable through at least two cables passing through the second hollow pipe string. a splicing box, wherein the at least two cables that are about to pass through the second hollow tubular string are prepared to be covered by a heat shrinkable tube, and the heat shrinkable tube is coated on the outside of the second hollow tubular string and a portion The at least two cables that do not penetrate the second hollow tubular string are formed to form a waterproof structure. The cable connection box of claim 2, further comprising at least one cable fixing device outside the cable connection box, the cable fixing device comprising: a first fixing portion fixed on the cable connection box And a second fixing portion is connected to the first fixing portion, and the second fixing portion fixes a cable which is to be introduced into the cable connection box and is prepared to be waterproofed by one of a heat shrinkable tube and an elastic rubber shrink tube. The cable fixing device of claim 3, wherein the first fixing portion is embedded in a cable entry and exit end surface of the cable connection box. The cable fixing device of claim 3, wherein the first fixing portion is integrally formed on a cable entry and exit end surface of the cable connection box. The cable fixing device of claim 3, wherein the first fixing The fixing manner of the cable to the end face of one of the cable connection boxes is selected from the group consisting of a screw connection, a bamboo connection, a tight clamp, a tight band, and a tight band. The cable fixing device of claim 3, wherein the second fixing portion and the cable are fixed in a manner selected from the group consisting of a tight clamp, a tight loop, and a tight strap. . The cable fixing device of claim 3, further comprising a support portion for connecting the first fixing portion and the second fixing portion. The cable fixing device of claim 8, wherein the second fixing portion is integrally formed with the support portion. The cable fixing device of claim 8, wherein the second fixing portion is mechanically coupled to the support portion. The cable fixing device of claim 8, wherein the first fixing portion is integrally formed with the support portion. The cable fixing device of claim 8, wherein the first fixing portion is mechanically coupled to the support portion. The cable fixing device of claim 8, wherein the support portion is fixedly coupled to the first fixing portion, and the support portion is fixed to the cable connection box. The cable fixing device of claim 8, wherein the material of the support portion is selected from the group consisting of metal, plastic, and combinations thereof. A communication cable connection box with an elastic rubber shrink tube waterproof device, the cable connection box comprising: a cover; and at least one cable entry and exit end face, the cable entry and exit end face having at least a first direction away from the cover a hollow tubular string for accessing the cable connecting box through at least one cable of the at least one first hollow tubular string; and at least one elastic rubber shrinking tube, the elastic rubber shrinking tubular system having a plurality of elastic and ductile properties a hollow synthetic rubber tube, and a flexible plastic strip pre-installed in the hollow hole of the rubber tube is wound around the inner wall of the rubber tube in a hollow threaded tubular shape and supports a hollow aperture of the rubber tube, and the hollow rubber tube The elastic rubber shrinkage tube is expanded to have a larger hollow diameter than the outer diameter of the first hollow tubular string of the cable inlet and outlet end faces and is about to pass through the outer diameter of the first hollow tubular string The outer diameter of the cable of the first hollow tubular string, and when the plastic strip placed in the rubber tube is removed, the rubber tube is restored to a smaller aperture by the hollow aperture of the plastic strip And the smaller aperture is smaller than an outer diameter of the first hollow tubular string of the cable entry and exit end face and an outer diameter of a cable that is about to pass through the first hollow tubular string, wherein the at least one The at least one cable of a hollow tubular string is prepared to be tightly wrapped by the elastic rubber shrinking tube, and the elastic rubber shrinking tube is wrapped around the outer portion of the first hollow tubular string and a portion thereof is not penetrated The cable of the first hollow tubular string forms a waterproof structure. The cable connection box of claim 15, wherein the cable entry and exit end surface further comprises a second hollow tubular string for accessing the cable through at least two cables passing through the second hollow tubular string a splicing box, wherein the at least two cables that are about to pass through the second hollow tubular string are prepared to be covered by a heat shrinkable tube, and the heat shrinkable tube is coated on the outside of the second hollow tubular string and a portion The at least two cables that do not penetrate the second hollow tubular string are formed to form a waterproof structure. The cable connection box of claim 16, further comprising at least one cable fixing device on the outside of the cable connection box, the cable fixing device comprising: a first fixing portion fixed on the cable connection box And a second fixing portion is connected to the first fixing portion, and the second fixing portion fixes a cable which is to be introduced into the cable connection box and is prepared to be waterproofed by one of a heat shrinkable tube and an elastic rubber shrink tube. The utility model relates to an elastic rubber shrinking tube for import and export waterproofing of a communication cable connecting box cable. The communication cable connecting box comprises a cover and a cable entry and exit end face, and at least one of the cable entry and exit end faces away from the cover a hollow tubular string for at least one cable to enter the cable splicing box through the at least one first hollow tubular string, the elastic rubber shrinking tube comprising a hollow synthetic rubber tube having rich elasticity and ductility, and the The hollow hole of the rubber tube is pre-assembled with a flexible rigid plastic strip wound around the inner wall of the rubber tube in a hollow threaded tubular shape and widened the hollow hole of the rubber tube, and the elastic rubber shrink tube is stretched The hollow aperture is larger than the cable inlet and outlet The outer diameter of the first hollow tubular string and the outer diameter of the cable that is about to pass through the first hollow tubular string, and when the plastic strip placed in the rubber tube is removed, the rubber hose is The large diameter of the hollow strip, that is, the elastic contraction, is restored to a smaller aperture, and the smaller aperture is smaller than the outer diameter of the first hollow tubular string of the cable entrance and exit end and is about to pass through the first hollow tube. An outer diameter of the cable of the column, wherein the at least one cable that is about to pass through the at least one first hollow tubular string is ready to be tightly wrapped by the elastic rubber shrinking tube, and the elastic rubber shrinking tube is wrapped The outer portion of the first hollow tubular string and a portion of the cable that does not penetrate the first hollow tubular string form a waterproof structure.