TWI410016B - A cable fixing device outside the heat - shrinkable cable splice box - Google Patents

Abstract

The present invention discloses a cable fixing device on the outside of heat-shrink cable junction box. The cable fixing device comprises a first fixing part capable of fixing on the heat shrinkable type jumper, and a second fixing part connected on the first fixing part and capable of fixing the cable that is to be introduced into the junction box. The first fixing part and the second fixing part can further be connected by a supporting part, for using to fix the cable, which is to be introduced into the heat-shrink cable junction box, on the outside of the heat-shrink cable junction box It will solve the problem of loosing at the joining position between cable and the heat-shrink tube due to the twist of the cable, which is to be introduced into the junction box, on the outside of the junction box; which will results water leakage of the junction box.

Description

Cable fixing device outside the heat-shrinkable cable connection box

The present invention relates to a cable fixing device outside a heat-shrinkable cable connection box, the device comprising a first fixing portion fixed to the heat-shrinkable connection box, and a second fixing portion connected to the first fixing portion The cable for introducing the connection box can be fixed, and the first fixing portion and the second fixing portion can be connected to the support portion as the cable for introducing the connection box is fixed on the outside of the heat-shrinkable cable connection box. The connection box is used. In particular, it is a heat-shrinkable cable connection box that can solve the problem that the cable of the connection box is twisted outside the connection box, causing the cable and the heat-shrinkable tube to be loosened, resulting in leakage of the connection box. Cable fixing device.

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 a cable connection box used by a cable, if the waterproof effect is not good, the water outside the connection box leaks into the connection box, which will affect the transmission quality of the cable and accelerate the deterioration of the cable, resulting in line transmission. Obstructions and reduce the life of the cable.

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; however, the heat-shrinkable cable connection box is more likely to leak water. The problem is the shortcoming of being criticized.

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 NT$150 billion will be invested each year to build the infrastructure of the optical fiber network. In recent years, the company has placed heat-shrinkable cable connection boxes for connecting optical cables in manholes and hand holes. More than half of the ratio is seriously leaking; because the problem of water leakage in the heat-shrinkable cable connection box has not been solved, the company had to purchase mechanical equipment at a price three times higher than the purchase of the heat-shrinkable cable connection box. The use of the cable connection box, in addition to the application is not as simple as the heat-shrinkable cable connection box, the purchase cost has also increased by three times. Therefore, if the 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 improved, 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 perseverance spirit finally conceived the cable fixing device outside the heat-shrinkable cable connection box of the case. 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 cable fixing device outside the heat-shrinkable cable connection box, the device comprising a first fixing portion fixed to the heat-shrinkable connection box, and a second The fixing portion is connected to the first fixing portion to fix the cable to be introduced into the connection box, and the support portion is connected to the first fixing portion and the second fixing portion as the outside of the heat-shrinkable cable connection box The cable for introducing the connection box is fixed to the connection box. In particular, it is possible to solve the new technical solution that the cable of the connecting box is twisted outside the connecting box, causing the cable and the heat-shrinkable tube to be loosened, resulting in leakage of the connecting box.

The solution of the cable fixing device of the invention is the result of research and exploration by our people. According to the research of the heat-shrinkable cable connection box after leaking water, the heat-shrinkable cable connection box is found to have two reasons. One reason is that the waterproof structure of the cover and the cable entrance and exit end joints is poor, and another reason is that the heat-shrinkable tube for waterproofing of the cable which is connected to the outside of the hollow tube of the cable in and out of the end face and the cable for introducing the hollow tube It is caused by the loosening of the subsequent part of the cable which is covered by the cable; therefore, there are still many heat-shrinkable cable connection boxes after improving the waterproof structure of the joint between the cover and the cable entrance and exit end surface so as not to leak water. Water leakage has occurred.

After repeated investigation and research, we found that the heat-shrinkable cable connection box is covered by the heat-shrinkable tube for waterproofing of the cable outside the hollow tube of the inlet and outlet of the cable and the cable for introducing the hollow tube. The subsequent portion of the cable is loosened, and the reason for the water leakage of the connection box is that after the connection box completes the heat shrinking waterproof operation, whether the fixing box is fixed in the manhole or the hand hole, or In the manhole or the hand hole, the connection box is taken out for cable connection, divergence extraction, maintenance, etc., because the connection box has to be moved, so that the heat-shrinkable tube is covered and then waterproofed after being connected to the outside of the connection box. The treated cable is twisted and bent such that the heat shrinkable tube is wrapped and then released at the subsequent portion of the cable, causing the connection box to leak water. In particular, the coating layer of the cable for outdoor use is mostly made of PE material. Generally, the heat-shrinkable tube of the heat-shrinkable cable connection box is used for covering the PE of the cable which is attached to the cable. The adhesion strength of the coating layer is limited, and it is easy to loosen due to the force when the cable is twisted and bent.

In order to overcome the deficiencies of the prior art, a cable fixing device external to the heat-shrinkable cable connection box has been invented by the researcher, and the device includes a first fixing portion that can be fixed on the heat-shrinkable connection box, and A second fixing portion is connected to the first fixing portion to fix the cable to be introduced into the connecting box, and a supporting portion is connected to the first fixing portion and the second fixing portion. The device is selected to be strong and not easily bent and deformed. Made of metal or plastic. When the heat-shrinkable cable connection box is used to fix the introduced cable to the device by the cable fixing device of the present invention, when the connection box is moved, the heat-shrinkable tube is covered and then waterproofed after being connected to the outside of the connection box. The cable is twisted and bent, but the fulcrum of the cable twisting and bending is the second fixing portion of the cable fixing device, and the heat shrinkable tube is coated on the waterproof joint portion of the cable. It is between the first fixed part and the second fixed part of the device, so it is not loosened due to the twisting and bending of the cable and the influence of the force. Therefore, the present invention can not only improve the problem that the leakage of the heat-shrinkable cable connection box affects the quality of the line, but also greatly reduce the cost of investment by the operator. Of course, the cable fixing device outside the heat-shrinkable cable connection box of the present invention can be used not only as a cable to be introduced for fixing the heat-shrinkable cable connection box, but also as a heat-shrinking for fixing the installed cable. Cable connection box cable.

In the cable fixing device outside the heat-shrinkable cable connection box of the present invention, the first fixing portion may be integrally formed or embedded in the cable entry and exit end face of the connection box, or may be screwed, bamboo-connected, and tightly bundled. Fixing means, a tightening ring, a tight band, and the like are fixed to the connecting box, and the second fixing portion may be integrally formed on the first fixing portion or mechanically fixed to the first fixing portion, and the introduction The cable may be fixed to the second fixing portion by a fastening device, a tight band, a tight band or the like, and the supporting portion is integrally formed with the first fixing portion and the second fixing portion or mechanically mutually Connecting, the support portion may also be fixed to the first fixing portion by a first end connection thereof and a second end for fixing the cable to be introduced, and the introduced cable may be a tight clamp, A tight band, a tight band or the like is fixedly fixed to the second end of the support portion. The introduction cable may be a portion where the cable is not covered by a heat shrinkable tube, a portion where the cable has been covered by a heat shrinkable tube, the cable is covered by a heat shrinkable tube, and then uncoated. The connecting portion or the like fixes the cable to the second fixing portion or the second end of the supporting portion. The cable fixing device of the present invention is also fixed to the inner side of the cable entrance and exit end of the cable connection box for fixing the cable which has been introduced into the interior of the connection box.

The invention will be further illustrated by the following figures and examples. The present invention is primarily directed to the preparation of the fastening device of the present invention in combination with the features of the present invention by methods known to those skilled in the art. The following examples are for illustrative purposes only and are not intended to limit the invention.

Please refer to FIG. 2, which is a partial schematic view showing the introduction of a cable to a heat-shrinkable cable connection box in the prior art. In Fig. 2, the heat-shrinkable cable connection box 20 comprises at least a plurality of hollow tubular columns 23, 24 which are connected by the cable entry and exit end face 21, the cover 22 (partial) and the cable entry and exit end face 21, the cable 27, 28 enter the heat-shrinkable cable connecting box 20 through the hollow tubular columns 23, 24, and the heat-shrinkable tubes 25, 26 are respectively wrapped around the joints of the cables 27, 28 and the hollow tubular columns 23, 24. Make it waterproof. However, the waterproof effect of this prior art is caused by the twisting of the cable. The heat-shrinkable tubes 25, 26 are wrapped and the subsequent portions 271, 281 of the cables 27, 28 are loosened, causing moisture to penetrate into the heat-shrinkable cable junction box 20.

Specific embodiment

The invention will be further described below in conjunction with the drawings and specific embodiments.

Example 1

Please refer to FIG. 3, which is a schematic diagram of a cable fixing device according to Embodiment 1 of the present invention. In FIG. 3, the heat-shrinkable cable connection box 30 (hereinafter referred to as the cable connection box 30) is composed of a plurality of hollow tubular columns 32, 33, and at least including cable entry and exit end faces 31 and cable entry and exit end faces 31. The cover 34 is composed of the cable fixing device outside the heat-shrinkable cable connection box 30 of the present invention. The first fixing portion 41 and a clip 43 are transmitted through the screw 431 (and another screw, not shown in FIG. 3). The first fixing portion 41 is fixed to the hollow tubular string 32; the second fixing portion 42 is fixed to the cable 35 of the cable connecting box 30 through the screw on the locking bundle clamp 44. Through the above-described second fixing portion 42 connected to the first fixing portion 41, the cable 35 covered by the heat shrinkable tube 38 is fixed to the cable connection box 30, and when the cable connection box 30 is moved When the cable 35 is twisted and bent, the fulcrum of the force is at the second fixing portion 42, so that the heat shrinkable tube 38 is wrapped around the waterproof portion of the cable 35, and the cable 35 is not twisted by twisting. The effect is loose, causing moisture to enter the cable splice box 30. The cable fixing device further includes a support portion 40 for connecting the first fixing portion 41 and the second fixing portion 42. The second fixing portion 42 may be integrally formed on the support portion 40; the first fixing portion 41 may be integrally formed on the support portion 40; or the first fixing portion 41, the second fixing portion 42, and the support portion 40 may be integrally formed. Further, the support portion 40 can be coupled to the first fixing portion 41, and the support portion 40 is fixed to the cable connection box 30. Similarly, the cable 37 that enters the hollow tubular string 33 and is covered by the heat shrinkable tube 39 can also be fixed in the same manner.

Example 2

Please refer to FIG. 4, which is a schematic diagram of a cable fixing device according to Embodiment 2 of the present invention. In FIG. 4, the heat-shrinkable cable connection box 50 (hereinafter referred to as the cable connection box 50) is composed of a plurality of hollow columns 52, 53 and a guard which at least include a cable entry and exit end 51 and a cable entry and exit end 51. The cover assembly, and the cable fixing device outside the cable connection box 50 of the present invention includes a first fixing portion and a support portion 62. The first fixing portion is composed of two semicircular clamps 581 and 582. The screw 591 fixes the first fixing portion to the cable connection box 50 through the screw holes 602 and 612 through the screw holes 601, 611 and the screw 592. The semicircular clamps 581, 582 of the portion also have a plurality of screw holes. The support portion 62 includes a first end 63 and a second end 64. The first end 63 is connected to the first fixing portion and fixed to the cable connection box 50. The first end 63 passes through the first end 63 through the screws 611 and 612 respectively. The screw holes 631 and 632, the screw holes 603 and 604 of the semicircular jig 582 of the first fixing portion, and the screw holes 633 and 634 of the first end 63 are completed. The second end 64 is used to fix the cable 55 which is introduced into the junction box 50 and is waterproofed by the heat shrinkable tube 57, and is fixed in the same manner as in Embodiment 1. The support portion 62 is a semi-circular jig 581, 582 that is mechanically coupled to the first fixing portion by screwing. The material of the support portion 62 is a metal, a plastic, and a combination thereof that are strong and not easily deformed. Similarly, the cable 54 that enters the hollow tubular string 52 and is covered by the heat shrinkable tube 56 can also be secured in the same manner.

Example 3

Please refer to FIG. 5, which is a schematic diagram of a cable fixing device according to Embodiment 3 of the present invention. In FIG. 5, the heat-shrinkable cable connection box 70 (hereinafter referred to as the cable connection box 70) is composed of at least a cover (not shown) including a cable entry/exit end face 71, and the cable entry and exit end faces 71 are plural. The empty tubular columns 72, 73, and the cables 74, 75 enter the cable splice closure 70 through a plurality of hollow tubular columns 72, 73, respectively. The cables 74, 75 passing through the hollow tubular columns 72, 73 are respectively covered with heat shrinkable tubes 76, 77 A waterproof structure is then formed on the exterior of the hollow tubular columns 72, 73 and a portion of the cables 741, 751 that do not penetrate the hollow tubular columns 72, 73. The cable fixing device includes a first fixing portion 79 fixed to the cable connecting box 70, and the screw hole 81 of the first fixing portion 79 is screwed to the screw hole 81 of the cable inlet and outlet end surface 71. And the second fixing portion 80 is connected to the first fixing portion 79, and the second fixing portion 80 fixes a cable 74 that is introduced into the cable connection box 70 and is waterproofed by the heat shrinkable tube 76, and is fixed in the same manner as the embodiment. The cable fixing device further includes a support portion 78 for connecting the first fixing portion 79 and the second fixing portion 80. Similarly, the cable 75 that enters the hollow tubular string 73 and is covered with the heat shrinkable tube 77 can also be fixed in the same manner.

According to the descriptions of the above embodiments 1, 2 and 3, the cable fixing device outside the heat-shrinkable cable connection box of the present invention can effectively prevent the heat-shrinkable cable connection box from moving when the cable is twisted and bent. Under the influence of the force, the heat-shrinkable tube is coated and then the waterproof and waterproof parts of the cable are loosened, which causes the leakage of the heat-shrinkable cable connection box, and the cost of the investment of the operator can be greatly reduced.

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

20. . . Heat-shrinkable cable connection box

twenty one. . . Cable entry and exit end

twenty two. . . Cover

23, 24. . . Hollow tube column

25, 26. . . Heat shrinkable tube

27, 28. . . Cable

271, 281. . . Next part

Figure 3

30. . . Heat-shrinkable cable connection box

31. . . Cable entry and exit end

32, 33. . . Hollow tube column

34. . . Cover

35, 37. . . Cable

38, 39. . . Heat shrinkable tube

40. . . Support department

41. . . First fixed part

42. . . Second fixed part

43. . . Clips

431. . . Screw

44. . . Tight clamp

Figure 4

50. . . Heat-shrinkable cable connection box

51. . . Cable entry and exit end

52, 53. . . Hollow tube column

54, 55. . . Cable

56, 57. . . Heat shrinkable tube

581, 582. . . Semicircular fixture

591, 592. . . Screw

601, 602. . . Screw hole

611, 612. . . Screw hole

62. . . Support department

63. . . First end

64. . . Second end

Figure 5

70. . . Heat-shrinkable cable connection box

71. . . Cable entry and exit end

72, 73. . . Hollow tube column

74, 75. . . Cable

741, 751. . . Cable

76, 77. . . Heat shrinkable tube

78. . . Support department

79. . . First fixed part

80. . . Second fixed part

81. . . Screw hole

82. . . Screw

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

Fig. 2 is a partial schematic view showing the introduction of a cable into a heat-shrinkable cable connection box in the prior art.

Fig. 3 is a schematic view showing the cable fixing device of the first embodiment of the present invention.

Fig. 4 is a schematic view showing the cable fixing device of the second embodiment of the present invention.

Figure 5 is a schematic view of a cable fixing device according to Embodiment 3 of the present invention.

Figure 3

30. . . Heat-shrinkable cable connection box

31. . . Cable entry and exit end

32, 33. . . Hollow tube column

34. . . Cover

35, 37. . . Cable

38, 39. . . Heat shrinkable tube

40. . . Support department

41. . . First fixed part

42. . . Second fixed part

43. . . Clips

431. . . Screw

44. . . Tight clamp

Claims (21)

A cable fixing device external to the heat-shrinkable cable connecting box, comprising: a first fixing portion fixed on the heat-shrinkable cable connecting box; and a second fixing portion connected to the first fixing portion, The second fixing portion fixes a cable which is about to be introduced into the heat-shrinkable cable connection box and is waterproofed by a heat-shrinkable tube. The cable fixing device of claim 1, wherein the first fixing portion is embedded in a cable entry and exit end surface of the heat-shrinkable cable connection box. The cable fixing device according to claim 1, wherein the first fixing portion is integrally formed on a cable entry and exit end surface of the heat-shrinkable cable connection box. The cable fixing device according to claim 1, wherein the fixing manner of the first fixing portion and the cable entry and exit end of the heat-shrinkable cable connection box is selected from the group consisting of screwing, bamboo shoot, and tight bundle. One of a group of clamps, tight collars, and tight straps. The cable fixing device of claim 1, wherein the second fixing portion is fixed to the cable waterproofed by the heat shrinkable tube, and is selected from the group consisting of a tight clamp, a tight band, and a tight band. One of the groups that make up. The cable fixing device of claim 1, further comprising a support portion for connecting the first fixing portion and the second fixing portion. The cable fixing device of claim 6, wherein the second fixing portion is integrally formed with the support portion. The cable fixing device of claim 6, wherein the second fixing portion is mechanically coupled to the support portion. The cable fixing device of claim 6, wherein the first fixing portion is integrally formed with the support portion. The cable fixing device of claim 6, wherein the first fixing portion is mechanically coupled to the support portion. The cable fixing device according to claim 6, wherein the support portion is connected The first fixing portion is fixed to the first fixing portion, and the supporting portion is fixed on the heat-shrinkable cable connecting box. A cable fixing device external to the heat-shrinkable cable connecting box, comprising: a first fixing portion fixed to the heat-shrinkable cable connecting box; and a supporting portion connected to the first fixing portion for fixing A cable that is about to be introduced into the heat-shrinkable cable splice and is waterproofed with a heat-shrinkable tube. The cable fixing device of claim 12, wherein the support portion comprises: a first end connected to the first fixing portion and fixed to the heat-shrinkable cable connection box; and a second end The cable for fixing the heat-shrinkable cable connection box to be waterproofed by the heat-shrinkable tube is fixed. The cable fixing device of claim 12, wherein the support portion is integrally formed with the first fixing portion. The cable fixing device of claim 12, wherein the support portion is mechanically coupled to the first fixing portion. The cable fixing device of claim 12, wherein the material of the support portion is selected from the group consisting of metal, plastic, and combinations thereof. A cable fixing device external to the heat-shrinkable cable connection box, the heat-shrinkable cable connection box comprises a cover and a cable entry and exit end face, the cable entry and exit end face having at least one hollow pipe string for at least one The cable enters the heat-shrinkable cable connection box through the at least one hollow pipe string, wherein the at least one cable passing through the at least one hollow pipe string is covered with a heat shrinkable tube and then is hollowed out The outer portion of the tubular string and a portion of the cable that does not penetrate the hollow tubular string form a waterproof structure, and the cable fixing device comprises: a first fixing portion fixed to the heat-shrinkable cable connecting box; And a second fixing portion connected to the first fixing portion, the second fixing portion fixing at least one cable, and the cable is about to be introduced into the heat-shrinkable cable connecting box to be waterproofed by a heat-shrinkable tube. The cable fixing device of claim 17, further comprising a supporting portion for connecting the first fixing portion and the second fixing portion. A cable fixing device external to the heat-shrinkable cable connecting box, comprising: a first fixing portion fixed on the heat-shrinkable cable connecting box; and a second fixing portion connected to the first fixing portion, The second fixing portion fixes a cable that is introduced into the heat-shrinkable cable connection box and is waterproofed by a heat-shrinkable tube. A cable fixing device external to the heat-shrinkable cable connecting box, comprising: a first fixing portion fixed to the heat-shrinkable cable connecting box; and a supporting portion connected to the first fixing portion for fixing A cable that is waterproofed by a heat shrinkable tube by introducing the heat-shrinkable cable connection box. A cable fixing device external to the heat-shrinkable cable connection box, the heat-shrinkable cable connection box comprises a cover and a cable entry and exit end face, the cable entry and exit end face having at least one hollow pipe string for at least one The cable enters the heat-shrinkable cable connection box through the at least one hollow pipe string, and the at least one cable passing through the at least one hollow pipe string is covered by a heat shrinkable tube and then is hollowed out The outer portion of the tubular string and a portion of the cable that does not penetrate the hollow tubular string form a waterproof structure, and the cable fixing device comprises: a first fixing portion fixed to the heat-shrinkable cable connecting box; And a second fixing portion connected to the first fixing portion, the second fixing portion fixing at least one cable that is introduced into the heat-shrinkable cable connection box and waterproofed by the heat-shrinkable tube.