JP2016136798A - Structure of insulated wire passage part and method of manufacturing the structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an insulation electric wire passage part structure and a manufacturing method for the structure, the structure being capable of: being applied to a marine cable having a universal mechanism, or the like; and preventing oil from infiltrating into the atmospheric pressure side.SOLUTION: The present invention provides a structure having excellent water pressure resistance, comprising: a sleeve 5 through which an insulation electric wire 3 is passed, and part of which is inserted into a passage hole 21 of a pressure bulkhead member 2 and fixed on the pressure bulkhead member 2; an elastic tube 6 disposed around the sleeve 5's part emerging outside and the insulation electric wire 3; a self fusion tape 7 wound around the insulation electric wire 3 so as to adjacently line up with the elastic tube 6; and a heat-shrinkable tube 8 disposed around the elastic tube 6 and the self fusion tape 7. The structure makes it possible to implement firm fixation between the insulation electric wire 3 and the pressure bulkhead member 2 without using an adhesive even when the insulation electric wire 3 is coated with polyethylene or the like, eliminate the existence of a gap through which oil may infiltrate as much as possible, and prevent oil from infiltrating from an adjacent system such as a universal mechanism through the passage hole 21 of the pressure bulkhead member 2.SELECTED DRAWING: Figure 11

Description

  The present invention relates to a structure of an insulated wire passage part and a manufacturing method of the structure. More specifically, when an insulated wire is passed through a passage hole of a pressure partition member disposed inside a marine cable or the like, it can also be used when using an insulated wire covered with a hardly adhesive material such as polyethylene. The present invention relates to a structure of an electric wire passage part and a manufacturing method of the structure.

  A cable (marine cable) laid in the sea or on the sea floor is long and may be composed of a plurality of connected power cables (see, for example, Patent Document 1). For example, when the marine cable is wound around a drum, it is necessary to prevent the cable from being loaded along the drum. In addition, marine cables are subject to external forces such as tidal currents in the sea or at the bottom of the sea, but the external forces may apply excessive tension to the cables, and do not give strong bending to the cables to handle such loads. For this reason, a so-called universal mechanism (also referred to as a universal structure or a universal joint) may be used.

  Such a universal mechanism has a structure in which a marine cable can be freely bent in a 360 ° direction with respect to an external force, so that the cable can cope with an excessive load. The marine cable provided with the universal mechanism is filled with oil (lubricating oil) in the system having such a structure in order to efficiently perform bending. On the other hand, in the sea, water pressure is applied to the bendable part equipped with the universal mechanism, while atmospheric pressure is applied around the part equipped with the universal mechanism, and the universal mechanism is filled. The oil tends to flow in the direction where atmospheric pressure is applied (atmospheric pressure side), and as a result, the oil may enter the longitudinal direction of the marine cable from the universal mechanism.

  For such oil intrusion to the atmospheric pressure side, as shown in FIG. 1 to be described later, the pressure partition member is disposed and fixed so as to be perpendicular to the longitudinal direction of the marine cable so as to sandwich the universal mechanism. In order to prevent oil from entering. In the case of marine cables, one or more insulated wires are built in along the longitudinal direction of the cable for communication with the outside, but the insulated wires are allowed to pass through the pressure bulkhead member. It is necessary to form a passage hole for the insulated wire in the pressure partition member, and allow the insulated wire to pass through the passage hole. In addition, for the portion where the insulated wire passes through the passage hole of the pressure partition member, the passage hole and the insulated wire are bonded and fixed by filling the gap between the passage hole and the insulated wire, The oil was prevented from entering the atmospheric pressure side through the passage hole.

JP 2001-112139 A

  In general, polyethylene was used as a covering material for insulated wires fixed to the passage of the pressure partition member, but polyethylene is a hard-to-adhere material and is fixed to the passage hole of the pressure partition member using an adhesive. In this case, the space between the insulated wire and the pressure bulkhead is not firmly fixed, the water pressure resistance of the portion through which the insulated wire passes becomes insufficient, and oil may enter through the gap between the passage hole and the insulated wire. there were.

  The present invention has been made in view of the above problems, and can be applied to, for example, a marine cable having a universal mechanism, and can prevent an oil from entering the atmospheric pressure side. And a method of manufacturing the structure.

  In order to achieve the above object, an insulated wire passage portion according to the present invention has an insulated wire passage portion formed by passing an insulated wire through a passage hole of a pressure partition member disposed inside a marine cable. A sleeve that is inserted into the passage hole of the pressure partition member and is fixed to the pressure partition member, a portion that appears outside the sleeve, and the portion An elastic tube disposed around the insulated wire; a self-bonding tape wound around the insulated wire side by side adjacent to the elastic tube; and disposed around the elastic tube and the self-bonding tape. A heat-shrinkable tube.

  The structure of the insulated wire passage portion according to the present invention is characterized in that, in the above-described present invention, the elastic tube is an elastomer tube or a rubber tube.

  The manufacturing method of the structure of the insulated wire passage portion according to the present invention is a method of manufacturing the structure of the insulated wire passage portion formed by passing the insulated wire through the passage hole of the pressure partition member disposed inside the marine cable. A portion of the sleeve is inserted into the passage hole of the pressure partition member, and the sleeve is fixed to the pressure partition member in a state in which the insulated wire is passed, and the portion appears outside the sleeve. An elastic tube is disposed around the insulated wire, and a self-bonding tape is wound around the insulated wire so as to line up adjacent to the elastic tube, and heat shrinks around the elastic tube and the self-bonding tape. A tube is attached, and the heat shrinkable tube is contracted.

  The manufacturing method of the structure of the insulated wire passage portion according to the present invention is characterized in that, in the above-described present invention, the elastic tube is an elastomer tube or a rubber tube.

  According to the structure of the insulated wire passage part according to the present invention, even if the insulated wire is coated with a difficult-to-adhere material such as polyethylene, the insulation wire and the pressure partition member are firmly fixed without using an adhesive. Thus, the structure having excellent water pressure resistance can be obtained by eliminating the existence of a gap through which oil enters as much as possible and preventing oil from entering from an adjacent system through the passage hole of the pressure partition member.

  In addition, the method of manufacturing the structure of the insulated wire passage portion according to the present invention is such that the insulated wire and the pressure partition member are firmly fixed, and the existence of a gap into which oil penetrates is eliminated as much as possible. Thus, it is possible to provide a means for producing a structure excellent in water pressure resistance capable of preventing the intrusion of oil from an adjacent system through a simple operation without using an adhesive.

It is the figure which showed typically an example of the marine cable provided with the universal mechanism. It is the front view which showed the one aspect | mode of the pressure partition member. FIG. 3 is a right side view of FIG. 2. FIG. 3 is a left side view of FIG. 2. It is the figure which showed the one aspect | mode of the sleeve typically. It is the figure which showed the other aspect of the sleeve typically. It is explanatory drawing (state only of a pressure partition member) which showed the insulated wire passage part. It is explanatory drawing (the state which attached the sleeve and let the insulated wire pass) which showed the insulated wire passage part. It is explanatory drawing (the state which attached the elastic tube) which showed the insulated wire passage part. It is explanatory drawing which showed the insulated wire passage part (the state which attached the self-fusing tape further). It is explanatory drawing (state which attached the heat contraction tube) which showed the insulated wire passage part.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
(I) Structure of the marine cable 1:
FIG. 1 is a diagram schematically illustrating an example of a marine cable 1 including a universal mechanism 11. As described above, the universal mechanism 11 is a mechanism that allows the marine cable 1 to be freely bent in a 360 ° direction with respect to an external force. FIG. 1 shows a partial structure of the marine cable 1.

  In the pressure partition member 2, the oil (lubricating oil) filled (intervened) in the system of the universal mechanism 11 is easily bent, so that the atmospheric pressure is applied from the system of the universal mechanism 11 (water pressure side) to which the water pressure is applied. In order to prevent intrusion (escape) into the (atmospheric pressure side) along the longitudinal direction of the ocean cable 1, it is arranged and fixed so as to be orthogonal to the longitudinal direction of the ocean cable 1. In general, the pressure partition member 2 is fixed by being screwed into a member attached to the marine cable 1 in a state where an O-ring (not shown) is attached. In the configuration of the marine cable 1 shown in FIG. 1, the universal mechanism 11 (and the conversion unit 12 disposed inside the marine cable 1) is sandwiched between the positions indicated by “*”. The pressure partition member 2 is disposed.

(II) Structure of the pressure bulkhead member 2:
2 is a front view showing an embodiment of the pressure bulkhead member 2, FIG. 3 is a right side view of FIG. 2, and FIG. 4 is a left side view of FIG. If the pressure partition member 2 disposed inside the ocean cable 1 has a partition wall surface (side wall surface) that is a surface (part) that is shielded perpendicular to the longitudinal direction of the ocean cable 1, its shape is particularly The shape is not limited, and the shape can be appropriately changed so as to be easily disposed on the marine cable 1.

  As shown in FIGS. 3 and 4, the pressure bulkhead member 2 is a through hole serving as a through hole for allowing an insulated wire 3 (see FIG. 6, etc.) built in along the longitudinal direction of the marine cable 1 to pass therethrough. A plurality of 21 are formed. The size (outer diameter) of the passage hole 21 can be appropriately determined according to the size of the insulated wire 3 to be passed and the sleeve 5 to be inserted (described later). The insulated wire 3 is built in the marine cable 1 for communication with the outside, and the covering material of the insulated wire 3 is made of polyolefin resin such as polyethylene, polyvinyl chloride, or the like. It is common.

  Since the pressure partition member 2 is subjected to water pressure or the like, it is preferably formed using a material having high mechanical strength. For example, the pressure partition member 2 is preferably composed of a metal material such as stainless steel, ceramics, or the like.

(III) Structure of sleeve 5:
FIG. 5 is a diagram schematically showing one aspect of the sleeve 5. In this embodiment, the sleeve 5 that is a cylindrical member is formed with a hollow portion 52 (shown by a dotted line in FIG. 5) that is a through hole for allowing the insulated wire 3 to pass therethrough. The aspect comprised from the cylindrical trunk | drum 53 and the front-end | tip part 51 a little thicker than the trunk | drum 53 is shown. In addition, the tip portion 51 of the sleeve 5 and a part of the body portion 53 connected to the tip portion 51 are inserted into the passage hole 21 of the pressure partition member 2 and fixed to the pressure partition member 2. 5 shows an aspect in which a flange 54 is formed on the sleeve 5 in a circumferential shape. By forming the flange 54, an O-ring (not shown in FIG. 5; see the O-ring 57 in FIG. 6). .) Can be easily mounted, and the water pressure resistance can be improved. The O-ring can be attached between the circumferential flanges 54 or between the flanges 54 and the tip 51. The sleeve 5 is fixed to the passage hole 21 of the pressure partition member 2, and the insulated wire 3 is passed through the hollow portion 52 of the sleeve 5 to pass through the passage hole 21 of the pressure partition member 2. The insulated wire 3 can be fixed easily.

  Like the pressure partition member 2, the sleeve 5 is subjected to water pressure or the like, and is preferably formed using a material having high mechanical strength, and is formed of, for example, a metal material such as stainless steel, glass, ceramics, or the like. It is preferable.

  FIG. 6 is a view schematically showing another aspect of the sleeve 5. The sleeve 5 shown in FIG. 6 has a thread 55 formed at the tip 51, and a thread (not shown) is formed in the passage hole 21 of the pressure bulkhead member 2, and then the tip 51 of the sleeve 5 is moved. The sleeve 5 can be securely and firmly fixed to the pressure partition member 2 by being screwed into the passage hole 21 in which the thread is formed. The sleeve 5 shown in FIG. 6 has two fastening portions 56 imitating hexagonal nuts formed integrally with the body portion 52, and is suitable for screwing the distal end portion 51 of the sleeve 5 into the passage hole 21. Thus, by tightening the tightening portion 56 with a tool such as a spanner, the distal end portion 51 of the sleeve 5 is easily screwed and fixed to the passage hole 21 of the pressure partition member 2.

  In the sleeve 5 shown in FIG. 6, an O-ring 57 is mounted between the distal end portion 51 and the flange 54 (the side far from the tightening portion 56) and between the two flanges 54. As described above, since the circumferential flange 54 is formed, the O-ring 57 is easily mounted between the flanges 54 or between the front end portion 51 and the flange 54 (the side far from the tightening portion 56). It is possible to improve the water pressure resistance. In the present embodiment, as shown in FIG. 6 (and FIG. 5 described above), the outer diameter of the flange 54 on the side close to the fastening portion 56 in the flange 54 formed on the sleeve 5 is the pressure partition member. The aspect larger than the internal diameter of 2 passage holes 21 is shown. Thus, when the sleeve 5 is inserted into the passage hole 21 of the pressure partition member 2 and fixed, the flange 54 on the side close to the fastening portion 56 is in contact with the barrier surface (side wall surface) of the pressure partition member 2. Since it stops, fixing by screwing etc. will be performed reliably.

  In addition, as shown in FIG. 6, an intrusion preventing portion 58 may be formed in the sleeve 5 in advance between the flange 54 near the tightening portion 56 and the tightening portion 56. When the sleeve 5 is inserted into the passage hole 21 of the pressure partition member 2 and attached, the intrusion prevention portion 58 appears outside the pressure partition member 2 together with the adjacent flange 54 (see FIG. 8 and the like described later). .)) By forming the intrusion prevention portion 58, a gap formed between the sleeve 5 and the passage hole 21 can be closed, and oil can be prevented from entering the passage hole 21 from the sleeve 5 side. it can. Here, the intrusion prevention part 58 plays a role of maintaining a certain degree of fluidity when pressure is applied and closing the gap by entering the gap between the sleeve 5 and the passage hole 21 or the like. It can be formed by winding a fusion tape (such as the one common with the self-fusing tape 7 shown in FIG. 10 to be described later) to have a diameter (height) substantially the same as the flange 54. The flange 54, such as a ring-shaped member formed of an elastomer material or a rubber material (a material common to a material exemplified as a material constituting the elastic tube 6 shown in FIG. 9 to be described later) is not limited thereto. It may be formed by an arbitrary member that is mounted or formed between the side close to the tightening portion 56 and the tightening portion 56 and plays a role of closing the gap between the sleeve 5 and the passage hole 21. Kill.

(IV) Structure of insulated wire passage part X:
Next, the structure of the insulated wire passage part X will be described. 7 to 11 are explanatory views showing the insulated wire passage part X, FIG. 7 is a state where only the pressure partition member is provided, FIG. 8 is a state where the sleeve 5 is attached and the insulated wire 3 is passed, and FIG. FIG. 10 shows a state where the elastic tube 6 is attached, FIG. 10 shows a state where the self-bonding tape 7 is further attached, and FIG. 11 shows a state where the heat shrinkable tube 8 is further attached.

  In the present invention, the “insulated wire passage portion X” means a portion where the insulated wire 3 passes through the passage hole 21 of the pressure partition member 2 and its periphery (from the pressure partition member 2 to the longitudinal direction of the insulated wire 3 ( It is common to the longitudinal direction of the marine cable 1) and includes a portion to which the sleeve 5, the elastic tube 6, the self-bonding tape 7, and the heat shrinkable tube 8 are attached. Further, in FIGS. 7 to 11, in explaining the insulated wire passage portion X, a part of the pressure partition member 2 is removed and inserted into the passage hole 21, the insulated wire 3 and the passage hole 21 of the pressure partition member 2. The front end portion 51 of the sleeve 5, the flange 54, and the like appear. 7 to 11 exemplify and explain one insulated wire passage portion X formed when one insulated wire 3 passes through one passage hole 21, the present invention is all Of course, it is a structure applicable to the insulated wire passage portion X formed by the insulated wire 3 that is passed through the passage hole 21.

  In the following description, the sleeve 5 shown in FIG. 6 is used as the sleeve 5. However, for convenience, the thread 55 formed at the distal end portion 51 of the sleeve 5 and the O-ring attached to the sleeve 5 are described. 57 is not shown.

  FIG. 7 shows a state of only the pressure partition member 2. A sleeve 5 is attached and fixed to the pressure partition member 2 in which the passage hole 21 is formed, and the insulated wire 3 is passed through the passage hole 21 by passing the insulated wire 3 through the hollow portion 52 of the sleeve 5. It will be.

  FIG. 8 shows a state in which the sleeve 5 is attached and the insulated wire 3 is passed. The sleeve 5, which is a cylindrical member, is a member having a hollow portion 52 (see FIG. 5) that is a through-hole for allowing the insulated electric wire 3 to pass therethrough, and a screw thread 55 formed at the distal end portion 51. Then, it is screwed into a screw thread (not shown) formed in the passage hole 21 of the pressure partition member 2, a part of the sleeve 5 including the tip 51 is inserted into the passage hole 21 of the pressure partition member 2, and the remaining part is the pressure partition member. 2 is fixed to the pressure partition member 2 in a state of appearing outside. In the present embodiment, as described above, the outer diameter of the flange 54 on the side close to the fastening portion 56 in the flange 54 formed on the sleeve 5 is larger than the inner diameter of the passage hole 21 of the pressure partition member 2. When the sleeve 5 is inserted into the passage hole 21 of the pressure partition member 2 and fixed, the flange 54 on the side close to the tightening portion 56 is in contact with the barrier surface (side wall surface) of the pressure partition member 2 and is fixed. Is surely done.

  FIG. 9 shows a state where the elastic tube 6 is further attached (in FIG. 9, the sleeve 5 and the insulated wire 3 existing inside the elastic tube 5 are also shown). The elastic tube 6 is a portion that appears outside the sleeve 5 (a portion that is not inserted into the passage hole 21 of the pressure partition member 2, and in the present embodiment, also covers the fastening portion 56). It is arrange | positioned so that the circumference | surroundings of the insulated wire 3 may be covered.

  The elastic tube 6 is attached for the purpose of mechanically fixing the insulated wire 3 to the sleeve 5 or the pressure partition member 2 to prevent the insulated wire 3 from moving and preventing oil from entering. The elastic tube 6 is not particularly limited as long as the elastic material is formed into a cylindrical shape. For example, it is preferable to use an elastomer tube such as a thermoplastic elastomer or a rubber tube. Although there is no restriction | limiting in particular in the length of the elastic tube 6, It is preferable to set it as 5-50 mm, and it is especially preferable to set it as 10-45 mm.

  As rubber tubes and elastomer tubes, for example, natural rubber such as latex, raw rubber, chlorinated rubber, hydrochloric acid rubber, cyclized rubber or derivatives thereof, CR (polymer of chloroprene), SBR (copolymer of butadiene and styrene) ), NBR (copolymer of butadiene and acrylonitrile), IR (polymer of isoprene), diene-based synthetic rubber such as copolymer of isobutylene and isoprene, EPM (copolymer of ethylene and propylene), EPDM (ethylene , Three-component copolymers of propylene and a small amount of non-conjugated dienes), rubbers such as silicon rubber and fluoro rubber, polystyrene, polyolefin, polyvinyl chloride, polyurethane, polyester, polyamide, etc. Those with elastomer as a constituent material can be used, But it is not limited to, et al.

  By inserting the portion appearing outside the sleeve 5 into the elastic tube 6, the elastic tube 6 covers the periphery of the sleeve 5 and protrudes in the direction opposite to the pressure partition member 2 (in the direction of the arrow in FIG. 9). It is arrange | positioned so that the circumference | surroundings of the insulated wire 3 coming out from the edge part of the part which appeared in the exterior of the sleeve 5 may be covered. In the present embodiment, as shown in FIG. 9, the intrusion preventing portion 58 attached to the sleeve 5 and the adjacent flange 54 appear outside the pressure bulkhead member 2 and are inserted into the intrusion preventing portion 58. The aspect attached side by side so that the edge part of the elastic tube 6 may contact | connect is shown. Thereby, airtightness is improved.

  FIG. 10 shows a state where the self-bonding tape 7 is further attached. By winding the self-bonding tape 7 side by side adjacent to the elastic tube 6, it becomes difficult for oil to travel through the insulated wire 3, and effects such as preventing the oil from entering the passage hole 21 can be obtained. . In addition, it is preferable to use the self-bonding tape 7 as a tape material that is wound side by side adjacent to the elastic tube 6 because it can be wound with no gap in close contact with the insulated wire 3.

  The self-bonding tape 7 is disposed by being wound around the insulated wire 3 in a direction opposite to the pressure partition member 2 (in the direction of the arrow in FIG. 10) adjacent to the elastic tube 6. As used herein, “adjacent” means that the elastic tube 6 and the wound self-adhesive tape 7 are preferably adjacent to each other without a gap, as shown in FIG. It is a concept that includes a state where they overlap or, on the contrary, both are slightly apart. The length of the self-bonding tape 7 (the width that appears outside when wound around the insulated wire 3) is not particularly limited, but is preferably 1 to 15 mm, and particularly preferably 5 to 15 mm. preferable.

  As the self-bonding tape 7, a conventionally known tape can be used. For example, a butyl resin such as butyl rubber, a silicon resin such as silicon rubber, a polyvinyl chloride resin, or a vinyl acetate resin is used as a constituent material. Things can be used. Examples of the self-bonding tape 7 made of butyl resin include “SD tape” (trade name, manufactured by Yokohama Rubber Co., Ltd.), but are not particularly limited thereto.

  FIG. 11 shows a state in which the heat-shrinkable tube 8 is further attached. FIG. 11 shows the final structure of the insulated wire passage portion X (in FIG. 11, the elastic tube 6 and the self-bonding tape 7 existing inside the heat shrinkable tube 8 are also shown). The heat shrinkable tube 8 is disposed so as to cover the periphery of the elastic tube 6 (see FIG. 8) and the self-bonding tape 7 (see FIG. 9), and reliably covers the elastic tube 6 and the self-bonding tape 7. And fix it.

  As the heat-shrinkable tube 8, a conventionally known tube can be used. For example, a tube made of polyolefin, elastic neoprene, fluoroplastic, or the like can be used.

  The heat-shrinkable tube 8 is disposed around the elastic tube 6 and the self-bonding tape 7 appearing outside. The length of the heat-shrinkable tube 8 matches the length of the elastic tube 6 and the self-bonding tape 7. Alternatively, for example, it may protrude slightly from the end of the self-bonding tape 7 in the opposite direction to the pressure partition member 2. The length of the heat-shrinkable tube 8 is not particularly limited, but is preferably 10 to 70 mm, and particularly preferably 20 to 60 mm.

(V) Manufacturing method of structure of insulated wire passage part X:
Next, the manufacturing method (formation method) of the structure of the insulated wire passage part X will be described.
First, as shown in FIG. 6, an O-ring 57 is mounted between the distal end portion 51 of the sleeve 5 and the flange 54 (on the side far from the tightening portion 56) and between the two flanges 54, and the flange of the sleeve 5. A self-fusing tape or the like is wound between 54 (the side close to the tightening portion 56) and the tightening portion 56 to form the intrusion preventing portion 58. Further, the distal end portion 51 of the sleeve 5 formed with the screw thread 55 is inserted into the passage hole 21 formed with a screw thread (not shown) in the pressure bulkhead member 2 shown in FIG. 7 with a tool such as a spanner. Turn 56 to screw in.

  6, the sleeve 5 having the shape shown in FIG. 6 is changed from the pressure partition member 2 formed with the passage hole 21 to the passage hole 21 of the pressure partition member 2 and the sleeve 5 such as the distal end portion 51 of the sleeve 5. The part is fixed to the pressure partition member 2 in a state of being inserted into the passage hole 21. Here, by making the outer diameter of the flange 54 on the side of the flange 54 formed on the sleeve 5 close to the fastening portion 56 larger than the inner diameter of the passage hole 21 of the pressure partition member 2, the sleeve 5 is made to be When inserted into the passage hole 21 and fixed, the flange 54 on the side near the tightening portion 56 comes into contact with the barrier surface (side wall surface) of the pressure partition member 2 and is securely fixed. After fixing in this way, the insulated wire 3 is passed through the hollow portion 52 of the sleeve 5 to obtain the state shown in FIG. There is no problem even if the sleeve 5 is attached to the pressure partition member 2 in a state where the insulated wire 3 is passed through the hollow portion 52 of the sleeve 5.

  When the sleeve 5 is fixed to the passage hole 21 of the pressure partition member 2 and the insulated wire 3 is passed through the hollow portion 52 of the sleeve 5, as shown in FIG. And the elastic tube 6 is fixed to the sleeve 5 and the insulated wire 3 so as to cover the periphery of the insulated wire 3. The elastic tube 6, which is a cylindrical member, has a sleeve 5 (the body portion 53) inserted into a hollow portion (not shown) and a part thereof is fixed to the sleeve 5, and the other part is fixed to the insulated wire 3. The elastic tube 6 is preferably attached so that one end thereof is in contact with the intrusion preventing portion 58 attached to the sleeve 5.

  When the elastic tube 6 is disposed, the self-bonding tape 7 is placed around the insulated wire 3 appearing on the opposite side of the pressure bulkhead member 2 so as to be adjacent to the elastic tube 6 as shown in FIG. Wrap around the insulated wire 3.

  When the self-bonding tape 7 is wound around the insulated wire 3, a heat shrinkable tube 8 is attached around the elastic tube 6 (see FIG. 9) and the self-bonding tape 7 (see FIG. 10) as shown in FIG. For example, the heat shrinkable tube 8 is contracted by heating with a dryer or the like, and the elastic tube 6 and the self-bonding tape 7 are covered and fixed. The heat shrinkable tube 8 contracts due to heating, and depending on the constituent material of the internal elastic tube 6, it may be slightly melted by heat. In such a case, the elastic tube 6 fits the sleeve 5 or the insulated wire 3, The water pressure resistance is improved. The structure of the insulated wire passage part X is completed by attaching and shrinking the heat shrinkable tube 8. It should be noted that there is no problem even if another member or the like is further attached so as to cover the heat-shrinkable tube 8 as long as the object and effect of the present invention are not hindered.

(VI) Effects of the present invention:
According to the structure of the insulated wire passage portion X according to the present embodiment described above, the insulated wire 3 is passed, and a part thereof is inserted into the passage hole 21 of the pressure partition member 2 and fixed to the pressure partition member 2. A sleeve 5, a portion appearing outside the sleeve 5, an elastic tube 6 disposed around the insulated wire 3, and a self-fusing tape 7 that is arranged adjacent to the elastic tube 6 and wound around the insulated wire 3. And a heat-shrinkable tube 8 disposed around the elastic tube 6 and the self-bonding tape 7. With this structure, even if the insulated wire 3 is coated with a difficult-to-adhere material such as polyethylene, or the insulated wire 3 is coated with a difficult-to-adhere material such as polyethylene, the insulated wire 3 can be used without using an adhesive. The space between the pressure partition member 2 is firmly fixed, and the existence of a gap for oil to enter between the passage hole 21 of the pressure partition member 2 and the insulated wire 3 is eliminated as much as possible. Thus, the structure is excellent in water pressure resistance, which can prevent the intrusion of oil from an adjacent system such as the universal mechanism 11 through the 21.

  The present invention is applicable to, for example, the marine cable 1 provided with the universal mechanism 11 as shown in FIG. 1 and can prevent the oil from entering the pressure partition member 2. In addition, a pressure partition member 2 is disposed inside the marine cable 1, and the insulated wire 3 is passed through the passage hole 21 of the pressure partition member 2, thereby passing the insulated wire 3 and the passage hole 21 between the pressure partition member 2. Can be widely used as the structure of the insulated wire passage portion X for fixing the wire.

(VII) Variation of embodiment:
The aspect described above shows one aspect of the present invention, and the present invention is not limited to the above-described embodiment, and has the configuration of the present invention and can achieve the objects and effects. It goes without saying that modifications and improvements within the scope are included in the content of the present invention. Further, the specific structure, shape, and the like in carrying out the present invention are not problematic as other structures, shapes, and the like as long as the objects and effects of the present invention can be achieved. The present invention is not limited to the above-described embodiments, and modifications and improvements within the scope that can achieve the object of the present invention are included in the present invention.

  For example, in the above-described embodiment, the shape of the pressure bulkhead member 2 has been described using the shape shown in FIGS. 2 to 4 (and FIG. 7 and the like). If the passage hole 21 through which 3 passes is formed, its shape can be arbitrarily determined.

  Similarly, the shape of the sleeve 5 will be described with reference to FIGS. 5 and 6. In forming the insulated wire passage portion X using FIGS. 7 to 11, the sleeve 5 having the shape shown in FIG. 6 is used. However, the present invention is not limited to this shape, and the shape can be arbitrarily determined as long as the hollow member 52 through which the insulated wire 3 is passed is formed. Note that when the sleeve 5 is fixed to the pressure partition member 2, a member in which the pressure partition member 2 and the sleeve 5 are integrally formed may be used.

In addition, the fastening portion 56 constituting the sleeve 5 shown in FIG. 6 is also formed for the purpose of screwing and fixing the distal end portion 51 of the sleeve 5 to the passage hole 21 of the pressure partition member 2. This is not an essential configuration for the sleeve 5 in the present invention. In addition, formation of the flange 54, selection of the number and outer diameter thereof, attachment of the O-ring 57, and formation of the intrusion prevention portion 58 in advance improve the water pressure resistance and prevent oil from entering. It is only shown as one means and is not essential in the present invention. The shape and configuration of the sleeve 5 can be arbitrarily determined in the tubular member in which the hollow portion 52 through which the insulated wire 3 is allowed to pass is formed.
In addition, the specific structure, shape, and the like in the implementation of the present invention may be other structures as long as the object of the present invention can be achieved.

  INDUSTRIAL APPLICABILITY The present invention can be advantageously used as a means for fixing the passage hole of the pressure partition member disposed inside the marine cable and the insulated wire passing through the passage hole. high.

DESCRIPTION OF SYMBOLS 1 ... Marine cable 11 ... Universal mechanism 12 ... Conversion part 2 ... Pressure bulkhead member 21 ... Passage hole 3 ... Insulated wire 5 ... Sleeve 51 ... Tip part 52 ... Hollow part 53 ... Trunk part 54 ... Flange 55 ... Thread 56 ... Tightening part 57 ... O-ring 58 ... Intrusion prevention part 6 ... Elastic tube 7 ... Self-adhesive tape 8 ... Heat shrinkable tube X ... Insulated wire passage part

Claims (4)

A structure of an insulated wire passage portion formed by passing an insulated wire through a passage hole of a pressure partition member disposed inside the marine cable,
A sleeve that is passed through the insulated wire and partially inserted into the passage hole of the pressure partition member and fixed to the pressure partition member;
An elastic tube disposed around a portion appearing outside the sleeve and the insulated wire;
Adjacent to the elastic tube, a self-bonding tape wound around the insulated wire,
A heat-shrinkable tube disposed around the elastic tube and the self-bonding tape;
The structure of the insulated wire passage part characterized by comprising.   The structure of the insulated wire passage part according to claim 1, wherein the elastic tube is an elastomer tube or a rubber tube. A method of manufacturing a structure of an insulated wire passage part formed by passing an insulated wire through a passage hole of a pressure partition member disposed inside a marine cable,
A part of the sleeve is inserted into the passage hole of the pressure partition member, and the sleeve is fixed to the pressure partition member in a state where the insulated wire is passed,
An elastic tube is disposed around the portion that appears outside the sleeve and the insulated wire,
Wrap a self-adhesive tape around the insulated wires so that they line up adjacent to the elastic tube,
A method of manufacturing a structure of an insulated wire passage part, wherein a heat-shrinkable tube is attached around the elastic tube and the self-bonding tape, and the heat-shrinkable tube is shrunk.   The said elastic tube is an elastomer tube or a rubber tube, The manufacturing method of the structure of the insulated wire passage part of Claim 3 characterized by the above-mentioned.

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