TWI392183B - A cable connection box that can take a different way for trunk cable waterproofing - Google Patents

Description

Cable connection box capable of waterproofing main cable in different ways

The invention relates to a cable connection box capable of performing waterproof processing of a trunk cable in different manners. The cable connection box comprises a cover and at least one cable entry and exit end face, and at least three hollow tubes have an entrance and exit end face of the cable. a column, one of which can be passed through the two trunk cables prepared to be waterproofed by the heat-shrinkable tube, and the other two hollow columns, each of which can be worn A trunk cable ready to be waterproofed with an elastic rubber shrink tube enters and exits the cable junction box. Especially in the case of straight connection or divergent connection, it can be waterproofed by the elastic rubber shrinking tube for the trunk cable of the incoming and outgoing cable connection box, without using the tool, without using the fire source, and the construction is simple and safe. In the case of encountering divergent connection in the middle, it is not necessary to use the heat-shrinkable cable connection box, and the cable connection box for waterproofing the trunk cable of the cable connection box can be used by the heat-shrinkable tube. In the cable connection box of the prior art, the installation of the trunk cable inlet and outlet can only provide the waterproof treatment of the trunk cable in one of the heat shrinkable tube or the elastic rubber shrink tube, resulting in an increase in the cost of the carrier and affecting the construction. Security issue.

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 fields of optical cable deployment and connection in various wired transmission industries such as telecommunications, cable television, and monitoring systems, heat-shrinkable cable connectors have 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, and the heat-shrinkable cable connection box is used to complete the heat-shrinkable tube for the first cable inlet and outlet waterproofing with a fire grill. When the fire is again grilled, the cable enters and exits the other cable on the end face. When the heat-shrinkable tube of the inlet and outlet is used, it often causes the heat-shrinkable tube adjacent to the grilled to be heated again to soften and loosen, and the joint box leaks. 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 face 21 of the heat-shrinkable cable connection box 20 (referred to as a connection box) has hollow columns 22, 23A, 23B, 23C, 23D, 23E, which are hollow columns. 22, 23A-23E are sealed before they are inserted into the cable, and are opened in a feasible manner, such as sawing or knocking, when the cable needs to be penetrated, and the trunk cables 24A, 24B pass through the hollow tubular string 22 The connection box 20 is inserted into the trunk cable 24A, 24B and 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.

Taking the cable connection box as an example, the diameter of the cable entrance and exit end of a communication cable connection box is mostly 15 cm to 20 cm or less, and a cable entry and exit end face usually needs to provide 2 trunk cables and 4 wires. The diverging cable enters and exits, so each fiber optic cable inlet and outlet on the end face of the cable is very close to each other. Therefore, in the prior art, the heat shrinkable tube is used as a heat-shrinkable fiber optic cable connection box for the optical cable inlet and outlet waterproof structure, and is grilled by fire. After completing the first heat-shrinkable tube for waterproofing the inlet and outlet of the optical cable, when the heat-shrinking tube of the other fiber-optic cable inlet and outlet on the end face is repeatedly fired and grilled, the heat-shrinkable tube adjacent to the grilled heat is often heated again to soften the pine. The loss of the connection box causes water leakage, which is the most troublesome problem in the prior art, and it is an urgent problem to be solved. In addition, due to the way of grilling by fire, many safety problems are involved. How to minimize and reduce the frequency of barbecue with fire has always been the goal that telecom operators are striving for.

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 recent years and used a large number of optical cable connectors to match optical cables. Recently, it has announced that it will start in 2009 for five consecutive years. Each year, 30 billion NT$150 billion will be invested to build the infrastructure of the optical fiber network. In recent years, the company has placed heat-shrinkable fiber optic cable connection boxes for connecting optical cables in manholes and hand holes. More than half of the ratios are seriously leaking; because the problem of water leakage in the heat-shrinkable cable connection box has not been solved, the company had to purchase a mechanical fiber optic cable connection box at a price three times higher than the purchase of the heat-shrinkable fiber optic cable connection box. The mechanical optical cable connection box with various mechanical structure sealing methods as the optical cable inlet and outlet waterproof structure has the optical cable inlet and outlet waterproof sealing. The outer diameter of the optical cable is narrow, the spare parts are diverse and complicated, and the construction procedure is cumbersome. The need to use a variety of tools, etc., resulting in inconvenient construction and high cost, the mechanical cable connection box is not as good as the heat-shrinkable cable connection Beyond simple procurement costs also increased three times. Therefore, if the loss and waterproof function of the heat-shrinkable optical cable connection box can be improved, the problem that the leakage of the heat-shrinkable optical cable connection box affects the line quality can be avoided, and the cost of the investment of the operator can be greatly reduced.

Although we can use an elastic rubber shrink tube instead of a heat-shrinkable tube to solve the heat-shrinkable tube as a heat-shrinkable fiber-optic cable connection box for the optical cable inlet and outlet waterproof structure, the first heat-shrinkable tube for waterproofing the inlet and outlet of the optical cable is completed by fire barbecue. After that, when the cable is again fired and grilled into and out of the heat-shrinking tube of the other fiber-optic cable inlet and outlet on the end surface, the heat-shrinkable tube adjacent to the grilled heat is again heated and softened and loosened, thereby causing the problem of water leakage of the connecting box, and minimizing and reducing the problem. The frequency of roasting with fire; however, the elastic rubber shrinking tube is only suitable for the main cable and the divergent cable of the optical cable connection box after the interception of the straight connection or the divergence connection in the case where the optical cable is inserted into the entrance and exit of each cable. Waterproof treatment, but it is impossible to pass through two optical cables at the entrance and exit of each cable when the divergence is connected in the middle, and at the same time, the groove between the two cables of the trunk cable is effectively waterproofed. Please refer to FIG. 3(A) because the elastic rubber shrinking tube 40 is a hollow synthetic rubber tube 41 which is rich in elasticity and ductility, and the flexible hole of the rubber tube is pre-assembled with a flexible plastic. The strip 42 is wound in the hollow tube in a hollow threaded tubular form and extends the hollow bore of the rubber tube 41. After the plastic strip 42 placed in the rubber tube 41 is removed, the rubber tube 41 is stripped by the strip. The 42-large hollow aperture, that is, the elastic contraction, is restored to be close to the smaller aperture before being stretched by the plastic strip 42. Please refer to FIG. 3(B), in which the cable enters and exits the end face 51 of the cable inlet and outlet. The cables 54, 55 of the empty tubular columns 52, 53 are contracted by the elastic rubber shrinking tube 56 tightly wrapped around the hollow tubular columns 52, 53 and a portion of the cable that does not penetrate the hollow tubular string. The waterproof structure formed by the wires 54, 55.

Most of the early optical cables only carried out linear connection and divergent connection. After the trunk cable was cut off, the optical cable connection box was introduced to carry out the connection operation. The entrance and exit of each trunk cable of the cable entrance and exit end of the connection box only needs to enter and exit a trunk cable, and the flexibility is changed. The rubber shrink tube replaces the heat-shrinkable tube. There is no problem in waterproofing the trunk cable and the divergent cable that are introduced into the fiber optic cable connection box after the truncation; since the fiber-to-the-following FTTH era has been entered, the backbone cable of many calls must be uninterrupted. In the case of entering and exiting the fiber optic cable connection box, and diverting the unused optical fiber to other users, this operation mode is called midway diversion and divergence; due to the cable connection box waterproofed by the elastic rubber shrink tube, it is impossible to divergence in the middle. The continuous trunk cable is effectively waterproofed, so when it is encountered in the middle of the divergence connection, it can only choose to use the mechanical cable connection box or the heat-shrinkable cable connection box, and choose the use of the mechanical cable connection box. Already explained; so another option, please see In Fig. 2(B), the heat-shrinkable cable connecting box 30 which can be subjected to water-repellent treatment by the heat-shrinkable tube 36 can be used by inserting the two trunk cables 24A, 24B into the trunk cable inlet and outlet 32.

In the prior art, the installation of the inlet and outlet of the trunk cable of a fiber optic cable connection box can only provide the waterproof treatment of the trunk cable in one of the way of heat shrinkable tube or elastic rubber shrink tube, and the fiber to the house During the construction of FTTH's optical cable deployment, it is difficult to anticipate statistics due to the need to perform too many variables in the process of diverging and splicing operations, which may result in the number of carriers and the amount of inventory required by the telecom operators to carry out the divergent connection of the optical cable connection box. In addition, the number of purchases and the number of stocks do not need to be troubled by the problem of the optical cable connection box that has been connected to the different connection functions. If all the heat-shrinkable optical cable connection boxes are used, the cost and statistics are increased while purchasing and inventory diversification. The cumbersome tasks such as distribution and the complexity of the materials used by the cable construction personnel, but in the waterproof treatment of the trunk cable, it has greatly increased the safety problem that could avoid the use of fire, and abandoned the telecom industry has been striving to minimize And reduce the frequency of fire during construction Full goal.

As a result of the job, the applicant, due to the lack of knowledge in the prior art, was carefully researched and explored, and a spirit of perseverance, and finally conceived the case of a cable that can be used for waterproofing the trunk cable in different ways. Line connection box", 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 connection box capable of performing waterproof processing of a trunk cable in a different manner, the cable connection box including a cover and at least one cable entry and exit end face, the cable The inlet and outlet end faces have at least three hollow tubular columns, one of which is adapted to pass through the two trunk cables prepared to be waterproofed by the heat-shrinkable tubes, and the other two hollow tubular columns, Each of the hollow tubular strings is accessible to and from the cable splice through a trunk cable that is to be waterproofed with an elastic rubber shrink tube. In particular, it can effectively solve the cable connection box in the prior art, and the installation of the trunk cable inlet and outlet can only provide waterproof treatment of the trunk cable in one of the heat shrinkable tube or the elastic rubber shrink tube, resulting in New technology solutions for the increase in the cost of telecommunications operators and the problems affecting construction safety.

The solution of the cable connecting box of the present invention which can adopt different methods for waterproofing the trunk cable is the result of research and exploration by our people. According to our research, the heat-shrinkable cable connecting box and the elastic rubber shrinking tube in the prior art are studied. After the lack of the communication cable connection box of the waterproof device and the reason, it is found that the heat-shrinkable cable connection box cable of the prior art is connected to the inlet and outlet of the trunk cable of the end face, although it can pass through the two main cables at the same time. Waterproof treatment with heat-shrinkable tube can not only meet the needs of linear connection and divergent connection, but also meet the needs of diverging and connecting in the middle. However, it is necessary to use fire-baked when waterproofing with heat-shrinkable tube, which greatly increases the original. In the case of straight-line connection and divergent operation, the safety of using fire can be avoided, and the safety goal of the telecommunication industry who has been striving to minimize and reduce the frequency of fire during construction cannot be met. The elastic rubber shrink tube is used instead of the heat-shrinkable tube. When waterproofing, it can meet the needs of linear connection and divergent connection, and It is not necessary to use fire, it can meet the safety goal of telecom operators who have been striving to minimize and reduce the frequency of fire during construction, but it can not meet the needs of the operation of diverging and connecting in the middle, because the elastic rubber shrinking tube is used for waterproof treatment. The inlet and outlet of the trunk cable connecting the end of the box cable can only pass through a truncated trunk cable, and cannot pass through two uncut trunk cables at the same time and waterproof with an elastic rubber shrink tube; The connecting box with the elastic rubber shrinking tube for the waterproof processing of the trunk cable is used for linear connection and divergent connection, and the heat-shrinkable cable connection box is used for the diverging connection in the middle. Compared with using only one type of connection box, it is inevitable for the telecom operator to increase Many related costs, but in order to consider the cost and only use the heat-shrinkable connection box for linear connection, divergence connection and mid-way divergence, it is necessary to sacrifice the safety problem that can be avoided in the straight line and the divergence. In order to solve the aforementioned problems, we have invented a different A cable connection box for waterproofing the trunk cable, 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 three hollow pipe columns, one of the hollow tubes The column can be passed through the two trunk cables prepared to be waterproofed by the heat shrinkable tube, and the other two hollow tubular columns, each of which can be passed through a piece to be elastically contracted. The trunk cable for waterproofing enters and exits the cable connection box; because the space in the manhole and the hand hole is limited, the rod and the wall are smaller as possible, so the volume of the cable connection box is light and thin, but except In addition to the trunk cable, most of the cable entry and exit end faces of the cable connection box are also provided with four or so divergent cable inlets and outlets, and the heat-shrinkable connection box with low cost and simple construction is completed by fire barbecue. After the cable is imported and exported to the waterproof heat-shrinkable tube, when the cable is again fired and the heat-shrinkable tube of the other cable inlet and outlet on the end surface is repeatedly fired, the heat-shrinkable tube adjacent to the grilled heat is often heated again to soften and loosen. Causing the connection box to leak In order to reduce the impact of this problem, the trunk cable and the branch cable inlet and outlet on the end face of the cable with limited area are placed as far as possible in the farthest and most dispersed manner, so it is difficult to Adjusting the position for adding and installing two trunk cable inlets for waterproofing the trunk cable with elastic rubber shrinkage. Because of the cable connection box of the present invention which can adopt different methods for waterproofing the trunk cable, only the trunk cable needs to be imported and exported. Waterproof treatment is carried out with heat-shrinkable tubes, and other divergent cable inlets and outlets can be treated with elastic rubber shrinkage tubes. Because of the heat-shrinking and waterproof treatment of the fire-baked trunk cables, the fire is no longer used, so the trunk cables are not used. And the inlet and outlet of the branch cable can be arranged in a relatively close and dense manner on the end face of the cable with limited area, and the space can be left at the end face of the cable for the purpose of adding two elastic rubbers. The shrink tube is used for the trunk cable inlet and outlet of the trunk cable waterproofing treatment, and the aperture of the inlet and outlet of the trunk cable is The aperture of the inlet and outlet of the branch cable; therefore, the cable connection box of the present invention which can adopt different methods for waterproofing the trunk cable can not only meet the requirements of linear connection, divergent connection and divergent connection in the middle, but also It is only necessary to use the fire to carry out the heat shrinking and waterproofing treatment of the trunk optical cable when encountering the need for the operation of the divergent connection in the middle. However, in most of the linear connection and the divergent connection operation, it is not necessary to use the fire at all, so the present invention is not only the present The telecommunications industry in the field has saved a lot of costs, and has greatly avoided the safety of using fire during construction. It has reached the safety goal of the telecommunications industry in this field has been striving to minimize and reduce the frequency of fire during construction.

After repeated investigation and research, we found that the cable connection box is used when the communication cable is connected, the position of the fiber storage tray bracket fixed in the connection box and the relative position of the trunk cable inlet and outlet, and the mating of the fiber in the connection box. The quality of the containment operation is closely related; after the trunk cable enters the connection box through the cable inlet and outlet of the cable entrance and exit end, the connected fiber needs to be connected to the fiber storage tray placed on the front surface of the fiber storage tray bracket after being connected. Most of the optical fibers in the intermediate connection are not required to be cut into the optical fiber storage tray, but are preferably placed on the back of the optical fiber storage tray bracket to avoid interference and need to be placed on the front side of the optical fiber storage tray bracket. The operation of the other optical fibers in the optical fiber receiving tray is prevented from being interfered with by other optical fibers in the optical fiber receiving tray disposed on the front surface of the optical fiber receiving tray holder, resulting in confusion of the optical fiber storage configuration and difficulty in inspection and maintenance. Problem; therefore, the position of the trunk cable inlet and outlet is preferably placed on the back of the fiber storage tray bracket, so that the trunk cable After entering the connection box, there can be sufficient space for smoothing and configuring the optical fiber. In particular, most of the optical fibers in the intermediate connection and connection operation do not need to be cut and matched into the optical fiber storage tray, and it is best In the case of no interference, it is smoothly accommodated on the back of the fiber storage tray bracket, and there are two types of trunk cable inlet and outlet of the cable entry and exit end face of the present invention, one is prepared to heat the main cable with a heat shrinkable tube. The cable entrance and exit of the operation, the other is to prepare the cable inlet and outlet for the waterproofing of the trunk cable with the elastic rubber shrinking tube, and the inlet and outlet of the two different trunk cables are arranged at different positions on the entrance and exit end of the cable, in order to After the trunk cable enters the connection box, the fiber can be smoothly arranged and configured in a sufficient space. In particular, most of the fiber in the trunk cable that is connected in the middle of the connection does not need to be cut and matched into the fiber storage tray. Preferably, it is free from any interference and interference with other fibers that are mated to the fiber receiving tray, and can be smoothly accommodated on the back of the fiber receiving tray holder. Therefore, the cable connection box of the present invention capable of performing waterproof processing of the trunk cable in different manners may further include at least one fiber storage tray holder fixed to the end surface of the cable, and the cable has at least one fixed end face. The device is configured to fix the optical fiber receiving tray bracket, and the fixing device can be fixed to different positions of the cable receiving and exiting end of the cable, and the optical fiber receiving tray bracket is fixed to the cable in and out end surface. The position can be adjusted according to the position of the entrance and exit end of the trunk cable in and out of the cable to solve the deficiencies of the conventional technology.

After repeated investigation and research, we found that when the cable connection box is used for the connection of the communication cable, the configuration and housing operation of the fiber in the connection box often occurs because the radius of curvature of the fiber bending is too small and the fiber bundle tube is too bent. Transmission obstruction, and the fiber bundle tube that is too curved after a period of time, the plastic of the fiber bundle tube often has a problem of transmission obstacles or even disconnection when the curved fiber bundle tube is unfolded due to the repair and maintenance work. Such a problem is particularly likely to occur when the cable is passed through the cable inlet and outlet of the cable into and out of the end of the cable and is blocked and interfered by the fiber receiving disk on the fiber receiving disk holder and must be bent. Therefore, after the cable enters and exits the cable entrance and exit of the cable into the connection box, the wiring and receiving stress of the optical fiber are smooth and the less curved, the better, and the radius of curvature must not be too small when bending, and the connection box is not too small; The fiber-receiving tray on the fiber-receiving tray bracket is the biggest obstacle to block and interfere with the fiber-optic wiring. After the cable enters the connection box, if the fiber-optic wiring is blocked and interfered by the fiber-receiving disk, the fiber must be turned; therefore, the trunk The optical cable is also a divergent optical cable. After entering the connection box, the travel of the optical fiber wiring should be avoided as much as possible by the distribution panel. However, there are many optical fibers in the backbone optical cable, especially most of the optical fibers in the trunk optical cable that are connected in the middle of the connection do not need to be used. The cable is connected to the fiber receiving tray; therefore, the cable connecting box of the present invention capable of performing waterproof processing of the trunk cable in different manners, and the position of the hollow tube string through which the cable enters and exits the end of the trunk cable a linear stroke of the trunk cable that passes through the hollow tubular string into the cable connection box to the optical fiber storage tray After installation of the side plate accommodating the largest number of optical fibers, the interference will not be blocked and the position of the optical fiber receiving plate, in order to solve the conventional technical deficiencies.

The cable connecting box capable of performing waterproof processing of the trunk cable in different manners is applied to the downstream connection of the optical cable, and the heat-shrinkable tube is used for waterproof processing of the trunk cable in and out of the cable end face, and according to the After studying the heat-shrinkable cable connection box after leaking, it is also found that there are two reasons for the water leakage of the heat-shrinkable cable connection box. One reason is that the waterproof structure of the cover and the cable entrance and exit end joint is poor, another reason And the heat-shrinkable tube for waterproofing of the cable which is external to the cable inlet and outlet end and the cable for introducing the hollow pipe string and the subsequent portion of the cable which is covered by the cable are loosened; Although the waterproof structure of the joint between the cover and the cable entrance and exit end is improved so that there is no water leakage, there are still many leaks in the heat-shrinkable cable connection box.

After repeated investigation and research, we found that the heat-shrinkable cable connection box is connected to the heat-shrinkable tube for waterproofing of the cable outside the hollow tube column of the cable inlet and outlet end and the hollow tube column. The reason why the covered portion of the cable is loosened, and the water leakage of the connecting box is caused by the heat shrinking and waterproofing operation of the connecting box, whether the fixing box is fixed in the manhole or the hand hole, Or removing the connection box from the manhole or the hand hole for cable connection, divergence, maintenance, etc., because the connection box has to be moved, and the heat shrinkable tube is completely attached to the outside of the connection box. Then, the cable that is waterproofed is twisted and bent, so that the heat shrinkable tube is wrapped and then released at the subsequent portion of the cable, causing the joint 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, the communication cable connecting box of the elastic rubber shrinkable tube waterproofing device of the present invention can further add at least one cable fixing device outside the connecting box, which includes a first A fixing portion 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 connection box, and a support portion is connected to the first fixing portion and The second fixing portion is made of a material such as metal or plastic which is strong and not easily deformed. When the cable connection box fixes the introduced cable to the device by the cable fixing device, when the connection box is moved, the cable twisted after the heat shrinkable tube is covered and then waterproofed is connected to the outside of the connection box. Dynamically bending, 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 covered by the waterproof joint portion of the cable Between the first fixed portion and the second fixed portion, it is not loosened due to the twisting and bending of the cable and the influence of the force. Of course, the cable fixing device outside the connection box can be used not only as a cable for fixing the heat-shrinkable tube for conventional heat treatment, but also as a cable for fixing the waterproof treatment with an elastic rubber shrink tube. The cable fixing device outside the connection box, 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 shoot, tight bundle clamp, tight bundle ring, tight The strap is 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 lead cable may be tightly clamped The fastening portion is fixed to the second fixing portion in a fixed manner, and the supporting portion is integrally formed with the first fixing portion and the second fixing portion or mechanically connected to each other, and the supporting portion can also be The first fixing end is fixed to the first fixing portion and the second end thereof is used for fixing the cable to be introduced, and the introduced cable can be used for the tightening clamp, the tight binding ring and the tight band The fixing means is fixed to the second end of the support portion. The introduction cable can be a portion where the cable is not covered by the heat shrinkable tube and the elastic rubber shrink tube, a portion where the cable has been covered by the heat shrinkable tube and the elastic rubber shrink tube, the cable is heat-shrinkable tube and The elastic rubber shrinkable tube is wrapped and uncovered, and the cable is fixed 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 "cable connection box for different ways of waterproofing the trunk cable" proposed in the present application will be fully understood by the following embodiments, so that those skilled in the art can complete it, but the implementation of the present case The embodiments are not limited by the following examples, and those skilled in the art can still practice other embodiments in accordance with the spirit of the embodiments disclosed herein, and such embodiments are within the scope of the invention.

Example 1

Please refer to FIG. 4(A) , which is a schematic diagram of a cable connection box which can be used for waterproofing the trunk cable in different manners according to Embodiment 1 of the present invention. In FIG. 4(A), the cable connection 401 box includes a cover 402 and at least one cable entry and exit end surface 403. The cable entry and exit end faces have a plurality of hollow tubular columns, wherein at least one hollow tubular string The 404 can pass through the two trunk cables prepared to be waterproofed by the heat shrinkable tube, and has at least two hollow tubular columns 405A, 405B, and each hollow tubular string is allowed to pass through one A trunk cable prepared to be waterproofed with an elastic rubber shrink tube is fed in and out of the cable joint box, and further, four hollow tubular columns 406A, 406B, 406C, and 406D are provided for passing through a strip of elastic rubber. The diverging cable for the waterproofing process of the shrinking tube enters and exits the cable connecting box; the cable connecting box 401 is used for three different forms of cable connecting, such as a straight connection of the communication cable, a divergent connection, and a diverging connection in the middle; When connecting and diverging, please refer to FIG. 4(B). The two trunk cables 411A and 411B that are cut off are respectively provided for two hollows which are disposed on the cable entrance and exit end surface 413 and are prepared to be waterproofed by an elastic rubber shrinking tube. Columns 414A, 414B enter The cable is connected to the box 415, and the elastic rubber shrinking tubes 412A, 412B are used for waterproofing treatment; when the diverging is successively connected, refer to FIG. 4(C), the untruncated trunk cable 423 is used to fold the two main cables in a folded manner. At the same time, a hollow tubular string 425 which is disposed on the inlet and outlet end faces 424 of the cable and is subjected to a water repellent treatment by a heat shrinkable tube enters the cable splice case 426, and is subjected to a water repellent treatment using a heat shrinkable tube 427.

In the cable connection box of the embodiment of the present invention, when the trunk cable performs the straight line connection and the branch connection operation, the main cable can be waterproofed by the elastic rubber shrink tube, and the trunk cable must be executed when encountering the trunk cable. When the diverging operation is connected in the middle, the main cable can be waterproofed by using the heat-shrinkable tube without replacing the cable connection box, so that the cable connection box in the prior art can be solved, and the trunk cable is imported and exported. The arrangement can only provide waterproof treatment of the trunk cable in one of the heat shrinkable tube or the elastic rubber shrink tube, resulting in an increase in the cost of the carrier and affecting construction safety.

Example 2

Please refer to FIG. 4(A) , which is a schematic diagram of a cable connection box which can be used for waterproofing the trunk cable in different manners according to Embodiment 1 of the present invention. In Fig. 4(A), the cable connection box comprises a cover and at least one cable entry and exit end face, the cable entry and exit end face has a plurality of hollow pipe columns, wherein at least one hollow pipe string is available for wearing. Two trunk cables prepared to be waterproofed by heat-shrink tubing enter and exit the cable splice box, and there are at least two hollow tubing columns, and each hollow tubing string is allowed to pass through one for elastic rubber shrink tubing The waterproof processing trunk cable enters and exits the cable connection box, and the cable inlet and outlet end faces have four hollow tubular columns for passing through a cable which is prepared to be waterproofed by the elastic rubber shrinking tube to enter and exit the cable connection box. And the cable connection box, refer to FIG. 4(D), further comprising at least one fiber storage tray bracket 432 fixed to the cable entry and exit end surface 431, and the cable entry and exit end surface has at least one fixing device 433A, 433B, for fixing the optical fiber receiving tray bracket 432, and the fixing device 433A, 433B can be fixed to the cable receiving and exiting end surface 434, 435A, 435B according to the introduction position 434, 435A, 435B of the trunk optical cable 436, 437A, 437B. 431 different locations; In addition, the cable connection box further includes a position of the cable entry and exit end face 431 for the hollow cable string 434, 435A, 435B through which the trunk cable 436, 437A, 437B passes, and is disposed through the hollow pipe column 434. After the linear stroke of the trunk cables 436, 437A, and 437B entering the cable connection box of the 435A and 435B is installed on the side of the fiber storage tray holder 432, the maximum number of the optical fiber receiving trays 438 are not received by the optical fiber receiving tray. 438 The position of blocking and interference.

Therefore, in the second embodiment of the present invention, due to the fixing device of the cable entrance and exit end, the fiber storage tray bracket can be fixed at different positions on the cable entry and exit end face in accordance with the difference in the introduction position of the trunk cable; The position for providing the inlet and outlet of the cable through which the trunk cable passes is the position where the linear stroke of the optical fiber wiring is not blocked and interfered by the optical fiber receiving tray after the trunk cable enters the connection box; therefore, the present invention further solves Because the trunk cable enters the connection box from different positions, the optical fiber wiring cannot be smoothly accommodated and suffers from the barrier and interference of the optical fiber storage disk, thereby causing problems such as optical fiber transmission obstacles.

Example 3

Please refer to FIG. 5 , which is a schematic diagram of a cable connection box capable of performing waterproof processing of a trunk cable in different manners according to Embodiment 3 of the present invention. In the fifth figure, the cable connection box 30 (hereinafter referred to as the cable connection box 30) is used for three different forms of cable connection, such as a straight line connection, a branch connection, and a midway connection of the communication cable. The cable connection box 50 is composed of a plurality of hollow tubular columns 52, 53 including a cable inlet and outlet end surface 51, a cable inlet and outlet end surface 21, a cover, a plurality of elastic rubber shrink tubes, and a heat shrinkable cable connection box. The heat-shrinkable tube used in the trunk cable of the diverging connection and the cable fixing device outside the plurality of cable connecting boxes 30 and a fiber-receiving disc bracket which can be fixed to the end face of the cable, wherein the divergent cable is composed The waterproof processing of the wire and the trunk cable is the same as that of the first embodiment; the difference is that the cable fixing device outside the cable connection box 30 fixes the branch cable and the trunk cable to the device, and the cable connection box The external cable fixing device includes: the first fixing portion 41 and a clip 43 are assembled by the screw 431 (and another screw, not shown in FIG. 5), and the first fixing portion 41 is fixed to the hollow tubular string. 32; the second fixing portion 42 is tightly locked A screw 35 on the bundle jig 44 secures the cable 35 introduced into the cable splice case 30. The cable 35, which is covered by the heat-shrinkable tube 38 and the elastic rubber shrink tube, is fixed to the cable splice case 30 by the second fixing portion 42 connected to the first fixing portion 41, and is moved. When the cable is connected to the box 30 and the cable 35 is twisted and bent, the fulcrum of the force is at the second fixing portion 42. Therefore, the heat shrinkable tube 38 and the elastic rubber shrink tube are wrapped around the waterproof portion of the cable 35. It does not come loose due to the twisting of the bending cable 35, 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 and the elastic rubber shrinkable tube can also be fixed in the same manner.

According to the descriptions of the foregoing embodiments 1, 2 and 3, the cable connection box of the present invention which can adopt different methods for waterproofing the trunk cable can effectively solve the cable connection box in the prior art, and the trunk cable is imported and exported. The arrangement can only provide waterproof treatment of the trunk cable in one of the heat shrinkable tube or the elastic rubber shrink tube, resulting in an increase in the cost of the carrier and affecting construction safety.

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

411. . . First opening

412. . . Second opening

42. . . Hard polyethylene plastic strip

421. . . First end

422. . . Second end

Figure 3 (B)

50. . . With elastic rubber shrink tube

562. . . Second open water 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

57. . . Plastic strip

571. . . First end

572. . . Second end

58. . . Elastic rubber shrink tube

Figure 4 (A)

401. . . Cable connection box of the invention

402. . . Cover

403. . . Cable entry and exit end

404. . . In and out of the hollow pipe column with a heat-shrinkable tube waterproof trunk cable

405A, 405B. . . Elastic rubber shrink pipe waterproof trunk cable inlet and outlet hollow pipe column

406A, 406B, 406C, 406D. . . Divergent cable entering and exiting the hollow pipe column

Figure 4 (B)

411A, 411B. . . Truncated trunk cable

412A, 412B. . . Elastic rubber shrink tube

413. . . Cable entry and exit end

414A, 414B. . . Elastic rubber shrink pipe waterproof trunk cable inlet and outlet hollow pipe column

415. . . Cable connection box of the invention

Figure 4 (C)

423. . . Untrended trunk cable

424. . . Cable entry and exit end

425. . . In and out of the hollow pipe column with a heat-shrinkable tube waterproof trunk cable

426. . . Heat shrinkable tube

Figure 4 (D)

431. . . Cable entry and exit end

432. . . Fiber storage tray bracket

433A, 433B. . . Fixing device for fixing fiber storage tray bracket

434. . . In and out of the hollow pipe column with a heat-shrinkable tube waterproof trunk cable

435A, 435B. . . Elastic rubber shrink pipe waterproof trunk cable inlet and outlet hollow pipe column

436. . . Untrended trunk cable

437A, 437B. . . Truncated trunk cable

438. . . Optical fiber storage tray

Figure 5

80. . . Cable connection box of the invention

81. . . Cable entry and exit end

82. . . Cover

83, 84, 85. . . Hollow tube column

86, 87. . . Divergent cable

88, 89. . . Main cable

90, 91. . . Shrink tube

92. . . Heat shrinkable tube

94. . . Tight clamp

95. . . Clips

96. . . Screw

93, 97. . . Support department

93A, 98. . . First fixed part

99. . . Screw

93B, 100. . . Second fixed part

101. . . Tight ring

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 of an elastic rubber shrinkage tube of the prior art.

Fig. 3(B) is a schematic view of a communication cable connection box with an elastic rubber shrink tube waterproofing device of the prior art.

Fig. 4(A) is a schematic view showing the cable connection box of the first embodiment of the present invention which can adopt different methods for waterproofing the trunk cable.

Fig. 4(B) is a schematic view showing the waterproof processing of the trunk cable with an elastic rubber shrinking tube when the cable connecting box of the first embodiment can be subjected to the waterproof processing of the trunk cable in different manners in the case of linear connection and branch connection.

Fig. 4(C) is a schematic view showing the waterproof processing of the trunk cable by the heat-shrinkable tube when the cable connection box of the first embodiment in which the trunk cable waterproofing process can be taken in different ways is connected in the middle.

Fig. 4(D) is a schematic view showing the manner of fixing the optical fiber receiving tray bracket and the position of the trunk cable inlet and outlet of the cable connecting box which can adopt different methods for waterproofing the trunk cable in the second embodiment of the present invention.

Fig. 5 is a schematic view showing the cable fixing device of the cable connecting box which can adopt different methods for waterproofing the trunk cable in the third embodiment of the present invention.

401. . . Cable connection box of the invention

402. . . Cover

403. . . Cable entry and exit end

404. . . In and out of the hollow pipe column with a heat-shrinkable tube waterproof trunk cable

405A, 405B. . . Elastic rubber shrink pipe waterproof trunk cable inlet and outlet hollow pipe column

406A, 406B, 406C, 406D. . . Divergent cable entering and exiting the hollow pipe column

Claims (21)

A cable connection box capable of performing waterproof processing of a trunk cable in different manners, 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 a plurality of hollow pipe columns, wherein There is at least one hollow tubular string for accessing the cable connecting box through two trunk cables prepared to be waterproofed by the heat shrinkable tube, and having at least two hollow tubular columns and each hollow tubular string is available A trunk cable that is prepared for waterproofing with an elastic rubber shrink tube enters and exits the cable junction box. The cable connection box of claim 1, further comprising at least one fiber receiving disk holder that can be fixed to the cable entrance and exit end, and the cable entry and exit end surface has at least one fixing device for fixing the optical fiber. The disk holder is accommodated, and the fixing device can be fixed at different positions on the entrance and exit end faces of the cable in accordance with different introduction positions of the trunk cable. The cable connection box according to the first and second aspects of the patent application, further comprising a position of the cable inlet and outlet end for the hollow cable string through which the trunk cable passes, is disposed through the hollow pipe column The linear stroke of the trunk cable entering the cable splicing box is not blocked or interfered with by the fiber accommodating disk after the maximum number of fiber accommodating disks are installed on one side of the fiber accommodating disk holder. The cable connection box according to the first, second and third aspects of the patent application, further comprising a position of the cable entry and exit end face for the hollow cable string through which the branch cable passes, is disposed at the The linear stroke of the hollow tubular string entering the branch cable of the cable connection box is not blocked or interfered by the fiber receiving tray after the maximum number of optical fiber receiving trays are installed on one side of the optical fiber receiving tray bracket . The cable connection box according to the first, second and third aspects of the patent application, further comprising at least two elastic rubber shrinking tubes for conducting cables in and out of the cable connection box. Waterproof treatment of the end face. The cable connection box according to the first, second and third aspects of the patent application, further comprising at least one heat shrinkable tube for performing cable access to the cable connection box at the end face of the cable Waterproof treatment. The cable connection box according to the first, second, third, and fourth aspects of the patent application, further comprising at least one cable fixing device on the outside of the cable connection box, the optical cable fixing device comprises: The first fixing portion is fixed on the cable connecting box; and a second fixing portion is connected to the first fixing portion, and the second fixing portion is fixed to be introduced into the cable connecting box to prepare a heat shrinkable tube and an elastic rubber shrinking tube One of the waterproof cables. The cable connection box of claim 7, wherein the first fixing portion is embedded in a cable entry and exit end surface of the cable connection box. The cable connection box of claim 7, wherein the first fixing portion is integrally formed on a cable entry and exit end surface of the cable connection box. The cable connection box of claim 7, wherein the fixing manner of the first fixing portion and the cable entry and exit end of the cable connection box is selected from a screw connection, a bamboo connection, a tight clamp, and a tight One of the groups consisting of a bundle of rings and a tight band. The cable splicing box of claim 7, 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 connection box of claim 7, further comprising a support portion for connecting the first fixing portion and the second fixing portion. The cable splicing box of claim 12, wherein the second fixing portion is integrally formed with the support portion. The cable splicing box of claim 12, wherein the second fixing portion is mechanically coupled to the support portion. The cable splicing box of claim 12, wherein the first fixing portion is integrally formed with the support portion. The cable splicing box of claim 12, wherein the first fixing portion is mechanically coupled to the support portion. The cable connection box of claim 12, 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 splicing box of claim 12, wherein the material of the support portion is selected from the group consisting of metal, plastic, and combinations thereof. A cable connection box includes: a cover; and at least one cable entry and exit end face, the cable entry and exit end face having: at least one hollow pipe string for passing through two trunk cables ready to be waterproofed in a first manner And at least two hollow tubular columns, and any of the hollow tubular strings are accessible through a trunk cable ready for waterproofing in a second manner. A cable connection box includes a cable entry and exit end face, the cable entry and exit end face having: a first hollow pipe string for passing through two first trunk cables ready to be waterproofed in a first manner; and a second The empty tubular string is accessible through a second backbone cable that is prepared to be water resistant in a second manner and that is bent. The cable splicing box of claim 20, wherein the first mode is the same as the second mode.