TW201721665A - Cable and liquid detector for use in cable - Google Patents

Abstract

The present invention makes it possible to detect a liquid that has intruded into a space inside of an outer sheath of a cable with high reliability, and easily adjust the sensitivity with which the liquid is detected. This liquid detector is disposed together with a cable core inside of the outer sheath of the cable. The liquid detector has an insulating member that exhibits electric conductivity upon contact with a liquid, and a plurality of linear electrode members disposed so as to be flush and in contact with the insulating member, and electrically separated from each other.

Description

Liquid detecting member for cable and cable

The present invention relates to a liquid detecting member for a cable and a cable for transmitting electric power or signals.

Conventionally, as a cable capable of detecting penetration of a liquid, there are as disclosed in Patent Documents 1 to 3. Patent Document 1 discloses a configuration in which a plurality of electrically conductive plastic strips are electrically insulated on the inner side of a plastic outer covering of a cable core, and the outer covering level is utilized according to changes in electrical characteristics between the conductive plastic strips. Detection of trauma or water seepage. Patent Document 2 discloses a configuration in which an inner semiconductive layer, an insulating layer, an outer semiconductive layer, a shielding layer, and an outer sheath are laminated on a conductor, and a coated sensor that detects moisture permeating into the outer sheath is provided. . Patent Document 3 discloses a configuration in which a foil-shaped or strip-shaped metal is spirally wound around a core portion of a multi-core cable in a longitudinal direction, and is disposed on the periphery of the electrode. An insulating layer of a water permeable structure; and an electrode disposed on a periphery of the insulating layer. [PRIOR ART DOCUMENT] [Patent Document 1] Japanese Patent Laid-Open Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. Bulletin

[Problem to be Solved by the Invention] However, in the above-described prior art, it is necessary to detect a small change in the resistance value between the electrodes, and therefore, there is a problem that it is difficult to detect the damage due to the outer cover with high reliability. The liquid infiltrated, or it is difficult to adjust the detection sensitivity of the liquid affected by the distance between the electrode members. The present invention has been made in view of the above problems, and an object of the present invention is to provide a cable and a cable capable of detecting a liquid which is infiltrated to the inside of a cable with high reliability and which can easily adjust the detection sensitivity of the liquid. Liquid detecting member. [Means for Solving the Problems] In order to solve the above problems, the cable of the present invention is characterized by comprising: a cable core; a liquid detecting member which is provided together with the cable core; and an outer covering which covers the cable core And the liquid detecting member; wherein the liquid detecting member has an insulating member that exhibits conductivity by contact with a liquid; and a plurality of linear electrode members that are disposed in contact with each other on the same side of the insulating member Upper, and electrically separated from each other. According to the above configuration, when the outer covering is broken and the liquid infiltrates into the inner side of the outer covering, the insulating member exhibits conductivity by contact with the liquid, whereby the self-electricity is provided between the electrode members of the insulating member in the contact state. The insulated state changes to a conductive state. Thereby, it is possible to detect the liquid infiltrated by the outer covering damage with high reliability by detecting a large change in the resistance value between the electrode members. Further, the liquid detecting member can arrange the electrode member on the same surface of the insulating member, and the distance between the electrode members can be largely changed as compared with the case where the electrode member is disposed in the thickness direction of the insulating member. Thereby, the detection sensitivity of the liquid affected by the distance between the electrode members can be easily adjusted. Further, in the cable of the present invention, the insulating member may be formed in a sheet shape, and the electrode members may be arranged in parallel with each other on a surface of the insulating member. According to the above configuration, the liquid detecting member has a sheet-like outer shape, whereby one of the various liquid detecting members and the setting method can be selectively employed depending on the use, structure, installation place, and the like of the cable. Moreover, in the cable of the present invention, the liquid detecting member may be spirally disposed around the cable core. For example, when the liquid detecting member is disposed in parallel with the longitudinal direction (extension direction) of the cable core, if the liquid that has penetrated into the outer covering is diffused only in the longitudinal direction of the cable core, it may be difficult to detect the liquid. On the other hand, when the liquid detecting member is disposed in a spiral shape around the cable core as in the above configuration, the liquid can be detected regardless of which direction the liquid penetrating into the outer side is diffused, and therefore, the phase is detected. It is easier to detect the liquid that has penetrated into the outer side of the outer cover than when it is disposed in parallel with the longitudinal direction of the cable core. Moreover, in the cable of the present invention, the liquid detecting member may have a protective layer that can peelably cover the insulating member and the electrode member. According to the above configuration, the protective layer prevents the liquid from penetrating into the insulating member at the portion where the insulating member is covered by the protective layer. Therefore, if the protective layer is normally present, the insulating member does not exhibit conductivity. Therefore, in this case, the liquid detecting member is configured to mainly infiltrate the liquid infiltrated at the portion of the peeling protective layer of the insulating member. In this way, for example, the protective layer is peeled off only for the monitoring portion that is likely to be monitored due to the infiltration of the liquid, and the protective layer is not damaged by the cable. For larger breakage, the penetration of liquid may not be detected. In this way, since the detection sensitivity of the infiltrated liquid is different from the monitoring portion and the monitoring portion, it is possible to suppress unnecessary replacement or repair of the cable. Further, in the cable of the present invention, the insulating member may be formed in a sheet shape, and the electrode members may be arranged in parallel with each other on the surface of the insulating member, and may have the insulating member covered. And a protective layer of the electrode member, wherein a peeling strength of the protective layer with respect to an inner region between the electrode members of the insulating member and an outer region other than the inner region and the electrode member disposed region is The inner region is smaller than the outer region described above. According to the above configuration, the outer layer is more difficult to peel off than the inner region, and therefore, the liquid detecting member can withstand the load from the outside, and the reliability of the cable can be improved. In addition, when the protective layer is peeled off and the insulating member is exposed to the outside, when the protective layer is removed by the auxiliary tool and is easily secured to the outer side of the working space, only the inner region is covered with a small peeling strength. Protective layer. Therefore, the protective layer can be easily peeled off from the insulating member. Therefore, in the protective layer, even if the peeling strength of the portion covered in the inner region of the insulating member is relatively small, for example, the peeling strength of the portion which is covered by the outer side region of the insulating member is peeling strength even if it is peeled off by hand work. Since it is large, the peeling operation can be easily performed while maintaining the reliability of the liquid detecting member with respect to the mechanical load. Further, the liquid detecting member for a cable according to the present invention is characterized in that it is provided in a liquid detecting member for a cable which is disposed inside the cable, and has an insulating member which is brought into contact with the liquid. Conductivity; a plurality of linear electrode members which are provided in contact with each other in an insulating state and electrically separated from each other; and a protective layer which is capable of peelingly covering the insulating member and the electrode member. According to the above configuration, the protective layer prevents the liquid from penetrating into the insulating member at the portion where the insulating member is covered by the protective layer. Therefore, the insulating member does not exhibit conductivity as long as the protective layer is normally present. Therefore, in this case, the liquid detecting member for a cable is configured to mainly infiltrate the liquid in the portion of the peeling protective layer of the insulating member. Thereby, for example, the protective layer is peeled off only for the monitoring portion that must be monitored due to the infiltration of the liquid, which causes a major failure, and the like, as long as the protective layer is not damaged by the cable. If the damage is large, the penetration of the liquid may not be detected. In this way, since the detection sensitivity of the infiltrated liquid is different from the monitoring portion and the monitoring portion, it is possible to suppress unnecessary replacement or repair of the cable. Further, in the liquid detecting member for a cable of the present invention, the insulating member may be formed in a sheet shape, and the electrode members may be arranged in parallel with each other on a surface of the insulating member, and the protective layer may be opposed to the insulating member. The peeling strength of the inner region between the electrode members and the outer region other than the inner region and the electrode member is smaller than the outer region. According to the above configuration, since the outer layer is more difficult to peel off than the inner region, the liquid detecting member is stronger with respect to the load from the outside, and the reliability of the cable can be improved. In addition, when the protective layer is peeled off and the insulating member is exposed to the outside, when the protective layer is removed by the auxiliary tool and the area outside the working space is easily removed, only the small peeling strength is left on the inside. The protective layer of the area. Therefore, the protective layer can be easily peeled off from the insulating member. Therefore, in the protective layer, even if the peeling strength of the portion covered in the inner region of the insulating member is relatively small, for example, the peeling strength of the portion which is covered by the outer side region of the insulating member is peeling strength even if it is peeled off by hand work. Since it is large, the peeling work can be easily performed while maintaining the reliability of the liquid detecting member with respect to the mechanical load. Further, in the liquid detecting member for a cable of the present invention, the protective layer may have a sheet-shaped protective sheet and an adhesive layer subsequent to the insulating member, and the insulating member may have a unit area with respect to the adhesive layer. The contact area is such that the inner area is smaller than the outer area. According to the above configuration, the peeling strength can be changed in the portion of the protective layer covering the outer side region of the insulating member and the portion covering the inner region by the contact area per unit area of the insulating member with respect to the adhesive layer. . [Effect of the Invention] According to the present invention, it is possible to detect a liquid that has penetrated into the outer side of the cable with high reliability, and it is possible to easily adjust the detection sensitivity of the liquid.

(First embodiment) Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. In the following, the cable of the present invention will be described below for use in a power cable used for a power transmission line, a power distribution line, a wiring line, etc., but the cable of the present invention is not limited thereto. The cable of the present invention can be applied to, for example, various types of cables such as a telephone cable, an optical fiber cable, a coaxial cable, a submarine cable, and the like, or an electrical device wiring or a cable for an electronic/communication device wiring. (Cable) As shown in Fig. 1, the cable 1 of the present embodiment has a cylindrical shape, and has a cable core 2, a liquid detecting member 5 provided together with the cable core 2, and a coated cable core 2 and a liquid. The detecting member 5 is covered 6 . The liquid detecting member 5 has an insulating member 14 which exhibits conductivity by contact with a liquid, and a plurality of (two in the present embodiment) electrode members 15a and 15b which are provided in a contact state to the insulating member 14 On the same side, and electrically separated from each other. The liquid detecting member 5 is configured such that the liquid that has penetrated into the inner side of the outer cover 6 contacts the insulating member 14 and the resistance value between the electrode members 15a and 15b changes. Further, the electrode members 15a and 15b are connected to the measuring device 7 described below. The measuring device 7 measures the resistance value between the electrode members 15a and 15b, and determines which of the "infiltration state" and the "non-infiltration state" the state of the liquid detecting member 5 is based on the measured resistance value. Here, the "liquid" is a liquid material to be detected by the liquid detecting member 5, and is not limited to the material or physical properties as long as it is a liquid material. The liquid material means fluidity to the extent that the liquid or the liquid is impregnated into the insulating member 14. As the type of "liquid", in addition to seawater, pure water, and water containing impurities, it may be an organic substance such as an acid, a base, an oil, or an organic solvent. Further, the physical properties of the "liquid" may be those which are liquidified at the ambient temperature of the cable 1. The "non-infiltration state" is a state in which the insulating member 14 does not exhibit conductivity. The "infiltration state" is a state in which the insulating member 14 exhibits conductivity. In other words, the "infiltration state" is a state in which the insulating member 14 is electrically connected to the insulating member 14 by the liquid, and the electrode members 15a and 15b are electrically connected to each other by the insulating member 14. Therefore, the resistance value of the insulating member 14 is "infiltration state" and the resistance value is smaller than that in the case of "non-infiltration state". Thereby, the measuring device 7 can determine the "infiltration state" and the "non-infiltration state" by measuring the resistance value between the electrode members 15a and 15b. Further, when the state of the liquid detecting member 5 is a non-infiltrated state, it indicates that the cable 1 does not have an abnormality that must be replaced or repaired. On the other hand, when the state of the liquid detecting member 5 is the infiltrated state, it indicates that the cable 1 has an abnormality that must be replaced or repaired. The measuring device 7 can also determine the presence or absence of the abnormality of the cable 1 by discriminating the state of the liquid detecting member 5. (Cable: Cable Core) Next, each component of the cable 1 will be described in detail. The cable core 2 is a main portion of the cable 1 disposed inside the outer cover 6, and includes at least one insulating core wire 3. The insulating core wire 3 includes a wire 3a and an insulating coating 3b. The wire 3a includes a conductor such as copper, and the insulating coating 3b covers the wire 3a. Hereinafter, the cable core 2 will be described as an example in which a plurality of insulating core wires 3 are twisted, but the configuration of the cable core 2 is not limited thereto. For example, the cable core 2 may be formed by paralleling a plurality of insulating core wires 3 in parallel. Further, the cable core 2 may include a spacer interposed between the insulating core wires 3 such as a spacer for holding the mutual positions of the plurality of insulating core wires 3, or may be wound around the insulating core wire 3. The outer circumference of the insulating core wire 3 is a piece. The front end (starting end or terminating end) of the cable core 2 is connected to a connector 8 for connecting the cable core 2 to other electric machines and the like. At this time, at the end before the connection of the cable core 2 to the connector 8, the wire 3a of the insulating core wire 3 is exposed by peeling off the insulating coating 3b. Moreover, the front end portion of the cable core 2 and the connector 8 are housed in the casing 9 in order to prevent an impact or the like from the outside. Further, a through hole (not shown) through which the cable 1 can be inserted is formed in the casing 9, and a sealing material for preventing penetration of liquid into the casing 9 is provided between the through hole and the cable 1. (Cable: Overlay) The outer covering 6 is a cylindrical covering member (outer sheath) in which the cable core 2 and the liquid detecting member 5 are covered in a liquid-tight state. The outer cover 6 is provided for the purpose of mechanical protection, chemical protection, waterproofing, etc. of the cable core 2. As the material of the overcoat 6, for example, various resin materials such as a polyvinyl chloride composition and a thermoplastic polyurethane composition can be used. (Cable: Liquid Detection Member) The liquid detection member 5 functions as a liquid detecting sensor that detects a liquid that has penetrated into the inside of the outer cover 6 due to breakage of the outer cover 6 or the like. Hereinafter, each constituent element of the liquid detecting member 5 will be described in detail. (Cable: Liquid detecting member: insulating member) The insulating member 14 is a member that exhibits electrical conductivity by contact with a liquid. That is, the insulating member 14 is in an insulated state of high resistance value when it is not impregnated with a liquid, and becomes a conductive state by a small resistance value in the case of contact with a liquid. Therefore, when the liquid is not impregnated in the insulating member 14, the electrode members 15a and 15b are not electrically connected to each other. Further, when the insulating member 14 is in contact with the liquid, the electrode members 15a and 15b are electrically connected to each other by the insulating member 14. In addition, the "high resistance value" of the insulating member 14 is set to a resistance value smaller than the resistance value of the air in order to determine the "infiltration state" and the "non-infiltration state" in the measuring device 7. The insulating member 14 is a long sheet-like member and has flexibility. The insulating member 14 exhibits conductivity by contact with a liquid, and has a liquid absorption/holding structure for absorbing and retaining liquid. That is, the insulating member 14 is configured to change from the insulating property to the electrical conductivity by the penetration of the liquid. The "liquid absorption/holding structure" provided in the insulating member 14 is not limited to the material or shape as long as it is a structure that permeates the liquid as the object to be detected. For example, a non-woven structure, a porous structure having continuous bubbles, a structure in which one or more holes are formed in a non-porous material, and a structure in which one or more slits are formed in a non-porous material are exemplified. When the insulating member 14 is non-woven or paper, even a small amount of liquid permeates the insulating member 14 by capillary action, so that the insulating member 14 changes from an insulating state to a conductive state, and thus can be regarded as a higher one. The liquid detecting member 5 of the detection accuracy. The material of the insulating member 14 is not particularly limited as long as it has a high resistance value when it is not in contact with a liquid. For example, non-woven fabric, paper, or the like can be used for the insulating member 14. Specifically, examples of the material of the insulating member 14 are plant fibers (cotton, hemp, etc.) or plant fibers (cellulose fibers) such as paper, chemical fibers (嫘萦, copper ammonia, etc.), ceramics, engineering plastics, and porous materials (sponges). Wait). Examples of engineering plastics include polypropylene, crosslinked polyethylene, polyester, polybenzimidazole, aromatic polyamine, polyimine, polyamidamine, polyetherimide, and polyphenylene sulfide. (PPS), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), and the like. More specifically, a nonwoven fabric comprising a polyester resin manufactured by Unitika Co., Ltd. (registered trademark: MARIX) can be used for the insulating member 14. This non-woven fabric is hydrophilic because the resin of the polyester fiber is a water-soluble acrylic resin. Furthermore, the manufacturing method of the above non-woven fabric is a spunbonding method. In the non-woven product number #20507WTD, the weight per unit area is 50 g/m. ² The average thickness is 155 μm. In non-woven product number #20604FLD, the weight per unit area is 60 g/m. ² The average thickness is 150 μm. In the non-woven product number #10606WTD, the weight per unit area is 60 g/m. ² The average thickness is 215 μm (with bulkiness). The thickness of the insulating member 14 is preferably from 10 to 500 μm. Further, the insulating member 14 is preferably lyophilic with respect to the liquid as the object to be detected. For example, if the liquid to be detected is water, it is preferably hydrophilic. In the case of a lyophilic structure, even a small amount of liquid permeates into the insulating member 14 to change the insulating member 14 from an insulating state to a conductive state. Therefore, even a small amount of liquid can be detected and can be shortened until the time when the liquid is detected. Further, the insulating member 14 may have a lyophilic property as the material itself, or may be a layer having a lyophilic layer formed on the surface of the lyophobic material. For example, the insulating member 14 may have a surfactant having interface activity with respect to the liquid at least a part of the contact portion with the liquid in the liquid absorption/holding structure. In this case, the liquid detecting member 5 capable of selecting a detection target such as water or oil can be formed by distinguishing the type of the surfactant from the type of the liquid to be detected. Further, the insulating member 14 may have a dissolved material (inorganic salt: sodium chloride, sodium sulfate, calcium chloride, magnesium hydroxide, or the like) which is dissolved in a liquid and ionized. In this case, even if the liquid itself has no conductivity (pure water, oil, etc.), the dissolved material ionized by the liquid can change the insulating member 14 to conductivity. (Cable: Liquid Detection Member: Electrode Member) As shown in FIG. 2, the electrode members 15a and 15b have a linear shape and are provided on the same surface of the insulating member 14 in a contact state. One end of each of the electrode members 15a, 15b is exposed to the outside, and is connected to the following connector members 71a, 71b of the measuring device 7. The electrode members 15a and 15b are arranged in parallel with each other along the longitudinal direction of the insulating member 14 on the surface of the insulating member 14. The electrode members 15a and 15b and the insulating member 14 can be brought into contact with each other, or can be brought into contact only by abutting. Further, the electrode members 15a and 15b are arranged at a predetermined interval from each other. Thereby, the electrode members 15a and 15b are electrically separated from each other. The specific interval means an interval that does not cause a malfunction in response to the humidity of the environment in which the liquid detecting member 5 is provided. Therefore, it can be arranged in parallel, and can also be a comb shape or a grid shape. Further, the resistance value between the electrode members 15a and 15b depends on the distance between the electrode members 15a and 15b. Therefore, the detection sensitivity of the liquid detecting member 5 can be changed by changing the distance between the electrode members 15a and 15b. Here, in the present embodiment, since the linear electrode members 15a and 15b are disposed on the same surface of the insulating member 14, the electrode members 15a and 15b are disposed in the thickness direction of the insulating member 14 as compared with the case where the electrode members 15a and 15b are disposed on the same surface of the insulating member 14. The distance between the electrode members 15a, 15b can be largely changed. As described above, in the present embodiment, since the degree of freedom in setting the distance between the electrode members 15a and 15b is large, the detection sensitivity of the liquid detecting member 5 can be easily adjusted. Further, the electrode members 15a and 15b may be of any material as long as they have conductivity. For example, as the material of the electrode members 15a and 15b, any one of nickel, copper, silver, tin, gold, palladium, aluminum, chromium, titanium, and zinc, or an alloy containing two or more thereof may be used. Among them, a metal such as aluminum or copper is preferred. Further, as the electrode members 15a and 15b, a metal foil obtained by calendering, a metal foil obtained by electrolysis (special electrolytic copper foil, etc.) may be used, or vacuum deposition, sputtering, or CVD may be employed. Metal film formed by deposition, chemical vapor deposition, MO (metal organic), plating, printing, and the like. Further, as the electrode members 15a and 15b, a slurry material such as copper paste, silver paste or carbon paste may be used. In addition, the electrode members 15a and 15b may be formed by laminating a metal layer and a conductive adhesive layer. The conductive adhesive layer is an adhesive layer containing a resin and conductive particles. Examples of the material of the resin include an acrylic resin, a fluorene resin, a thermoplastic elastomer resin, a rubber resin, and a polyester resin. Examples of the material of the conductive particles include copper powder, silver powder, nickel powder, silver coated copper powder (Ag coated Cu powder), gold coated copper powder, silver coated nickel powder (Ag coated Ni powder), and gold coated nickel powder. The metal powder can be produced by a water atomization method or a carbonylation method. Further, in addition to the above, particles in which the resin is coated on the metal powder and the metal powder is coated on the resin may be used. Further, the conductive particles are preferably silver-coated copper powder or silver-coated nickel powder. The reason for this is that conductive particles having improved conductivity can be obtained by using an inexpensive material. (Cable: Arrangement of Liquid Detection Member) The liquid detecting member 5 configured as described above is spirally wound around the cable core 2. In other words, when the liquid detecting members 5 are arranged in parallel along the longitudinal direction (extension direction) of the cable 1 (cable core 2), the electrode members 15a and 15b are also parallel to the longitudinal direction of the cable 1. At this time, when the outer cover 6 is broken and the liquid infiltrates into the inner side of the outer cover 6, and the infiltrated liquid is diffused in the circumferential direction of the cable 1, the liquid is in contact with the insulating member 14 between the electrode members 15a and 15b. The resistance value between the electrode members 15a and 15b is changed. On the other hand, when the infiltrated liquid diffuses only in the longitudinal direction of the cable 1, there is a possibility that the liquid does not contact the insulating member 14 between the electrode members 15a and 15b, and the resistance value between the electrode members 15a and 15b does not change. Therefore, when the liquid detecting members 5 are arranged in parallel along the longitudinal direction of the cable core 2, the detection accuracy thereof is lowered. On the other hand, when the liquid detecting member 5 is spirally wound around the cable core 2 as in the present embodiment, the electrode members 15a and 15b cross each other in the longitudinal direction and the circumferential direction of the cable 1. . Therefore, when the liquid that has penetrated into the inner side of the outer cover 6 is diffused in the longitudinal direction of the cable 1 and the circumferential direction of the cable 1, the liquid is in contact with the insulating member 14 between the electrode members 15a and 15b. Therefore, the resistance value between the electrode members 15a and 15b is surely changed. As a result, the detection accuracy of the liquid detecting member 5 can be improved. When the liquid detecting member 5 is spirally wound around the cable core 2, the cable core 2 is formed by twisting a plurality of insulating core wires 3 as in the present embodiment. The stranded insulating core wire 3 does not spread. That is, the liquid detecting member 5 can also function as a crimping tape. Moreover, in the present embodiment, the winding pitch of the liquid detecting member 5 wound around the cable core 2 is set such that the ends of the liquid detecting members 5 are brought into contact with each other. That is, when the liquid detecting member 5 is wound around the cable core 2, the cable core 2 is not exposed to the outside. Further, the winding pitch of the liquid detecting member 5 is not limited thereto, and the ends of the liquid detecting members 5 may be wound at intervals from each other such that one of the cable cores 2 is exposed to the outside, and One of the liquid detecting members 5 is wound in such a manner as to overlap each other. Further, the winding pitches may be different from each other in the longitudinal direction of the cable core 2. Further, the cable 1 may be spirally wound around the entire circumference of the cable core 2 by the liquid detecting member 5 at a portion where the cable 1 is to be improved in accuracy, and the liquid detecting member 5 and the cable core may be used for other portions. The length direction of 2 is arranged in parallel. As described above, in the present embodiment, the liquid detecting member 5 has a sheet-like outer shape, whereby one of the various liquid detecting members 5 can be selectively used depending on the use, configuration, installation place, and the like of the cable 1. method. In the present embodiment, the surface of the insulating member 14 on which the electrode members 15a and 15b are formed is disposed outside the diameter of the cable 1, but it may be disposed so as to be inside the diameter of the cable 1. (Manufacturing Method of Cable) The cable 1 of the present embodiment can be manufactured by various conventional manufacturing methods, and an example thereof will be briefly described below. First, the insulating core wire 3 is produced by extruding a film including an insulator of a resin composition onto a conductor containing copper or the like. Next, the cable core 2 is formed by twisting a plurality of the insulating core wires 3. Then, using the known tape winding mechanism, the cable core 2 is moved along the longitudinal direction thereof, and the liquid detecting member 5 is continuously supplied as a crimping tape member while rotating in the circumferential direction of the cable core 2. The liquid detecting member 5 is spirally wound around the entire circumference of the cable core 2 to the outer peripheral surface of the cable core 2. Moreover, at this time, the cable 1 can be manufactured by extrusion-molding the outer surface of the liquid detecting member 5 including the resin composition cover 6 (outer sheath). (Measuring Device) Next, the measuring device 7 connected to the electrode members 15a and 15b of the liquid detecting member 5 will be described. As described slightly above, the measuring device 7 is a device for measuring the resistance value between the electrode members 15a, 15b in the liquid detecting member 5, and discriminates the state of the liquid detecting member 5 based on the measurement result thereof (non-infiltration) State, and infiltration state). (Electrical Configuration of Measuring Device) As shown in FIG. 3, the measuring device 7 includes connector members 71a and 71b, a resistance value measuring circuit 72, an A/D (analog to digital) conversion circuit 73, an arithmetic circuit 74, and A ROM (read only memory) 75, a RAM (Random Access Memory) 76, a communication interface 77, and a power supply circuit 78. The connector members 71a and 71b are respectively connected to each of the electrode members 15a and 15b of the liquid detecting member 5. The resistance value measuring circuit 72 applies a specific voltage between the electrode members 15a and 15b via the connector members 71a and 71b by power supply from the power supply circuit 78. Then, the resistance value measuring circuit 72 measures the current flowing between the electrode members 15a and 15b by an ammeter (not shown), and calculates the resistance value between the electrode members 15a and 15b based on the current and the applied voltage. The resistance value measuring circuit 72 outputs the calculated resistance value to the A/D conversion circuit 73 in the form of an analog signal. The A/D conversion circuit 73 converts the analog signal output from the resistance value measuring circuit 72 into a digital signal and outputs it to the arithmetic circuit 74. The arithmetic circuit 74 executes various programs by power supply from the power supply circuit 78, and controls the actions of various actuators. For example, the arithmetic circuit 74 is based on self-A/D by executing an infiltration discrimination program stored in a memory mechanism such as a ROM (Read Only Memory) 75 or a RAM (Random Access Memory) 76. The digital signal indicating the resistance value between the electrode members 15a and 15b outputted from the conversion circuit 73 determines the state of the liquid detecting member 5. Specifically, a specific threshold value is previously stored in the ROM 75 or the RAM 76 or the like. When the resistance value between the electrode members 15a and 15b does not reach the threshold value, the calculation circuit 74 determines that the liquid detecting member 5 is in the "non-infiltrated state" and the cable 1 is not abnormal. On the other hand, when the resistance value between the electrode members 15a and 15b is equal to or greater than the threshold value, the calculation circuit 74 determines that the liquid detecting member 5 is in the "infiltration state", and the cable 1 is abnormal, and the cable 1 must be replaced. Repair, etc. Moreover, the arithmetic circuit 74 can output the abnormality information indicating the presence or absence of the abnormality of the cable 1 to the outside via the communication interface 77. That is, the communication interface 77 is at least capable of transmitting an interface of abnormal information. Specifically, the arithmetic circuit 74 transmits the unique ID (Identification) information together with the abnormal information via the communication interface 77. The inherent ID information is used to individually identify the information of the measuring device 7. In the present embodiment, the measuring device 7 transmits the abnormality information to a monitoring device (not shown). Thereby, the monitoring device can automatically respond to an abnormality (for example, automatically stop power transmission via the wire 3a of the cable core 2). In this way, the measuring device 7 of the data transmission source can be specified based on the ID information. Therefore, the cable 1 that generates the abnormality can be specified. Therefore, the plurality of cables 1 can be monitored from a distance as long as the ID information is associated with the installation location. Further, in the present embodiment, as described above, the determination information signal is output to the outside by wireless communication. However, the measurement device 7 may further provide an external contact output for wiring as the terminal side communication unit. Thereby, the terminal side communication unit can cope with either wireless or wired. As a variant, the measuring device 7 may be configured to have a reporting mechanism such as a speaker or a display, and the reporting device may report the abnormality information of the cable 1 to a user in the vicinity of the measuring device 7. As described above, according to the present embodiment, when the outer cover 6 is not broken and the liquid does not penetrate into the inner side of the outer cover 6, the insulating member 14 is in a state in which the conductive member 14 does not exhibit conductivity. As a result, the resistance value between the electrode members 15a and 15b becomes a high resistance value, and the measuring device 7 can determine that the state of the liquid detecting member 5 is "non-infiltration state", and the cable 1 is not abnormal. On the other hand, when the outer cover 6 is broken and the liquid penetrates into the inner side of the outer cover 6, the insulating member 14 is in a state of exhibiting conductivity. As a result, the resistance value between the electrode members 15a and 15b becomes a small resistance value, and the measuring device 7 can determine that the state of the liquid detecting member 5 is "infiltration state" and the cable 1 is abnormal. As described above, it is possible to detect the water leakage caused by the damage of the outer cover 6 with high reliability by detecting a large change in the resistance value between the electrode members 15a and 15b. (Second Embodiment) Next, a liquid detecting member according to a second embodiment will be described. In the second embodiment, the liquid detecting member has a protective layer in a different aspect from the first embodiment. In the following, the same portions as those in the above-described first embodiment are denoted by the same reference numerals, and their description will be appropriately omitted. As previously described, at the end of the insulating core 3 (cable core 2), the insulating coating 3b is peeled off from the wire 3a to expose the wire 3a. Therefore, if the liquid comes into contact with the exposed wire 3a, a short circuit occurs between the plurality of wires 3a of the cable core 2, which causes a major failure. As described above, since the front end portion of the cable core 2 is housed in the casing 9, normally the liquid does not come into contact with the front end portion of the cable core 2. However, the liquid infiltrated by the damage of the cover 6 outside the casing 9 may move along the longitudinal direction of the cable core 2 on the inner side of the outer cover 6 to reach the front end of the cable core 2. In addition, although a sealing material is provided between the casing 9 and the cable 1, when the sealing material is abnormal, the liquid may penetrate into the casing 9 and reach the front end of the cable core 2. . Therefore, the front end of the cable 1 will have a significant portion due to water seepage, and it is necessary to monitor the monitored portion in such a manner that it can detect a small amount of water seepage. On the other hand, in the central portion of the cable 1, since the wire 3a is covered with the insulating coating 3b, even if a small amount of liquid permeates into the inner side of the outer cover 6, no major failure occurs, and the cable 1 can be continuously used. . Here, when the detection sensitivity of the liquid detecting member 5 at the central portion of the cable 1 is the same as the detection sensitivity of the front end portion of the cable 1, the measuring device 7 can be used even when the cable 1 can continue to be used. It is also discriminated that an abnormality is generated in the cable 1. As a result, it is possible to perform unnecessary replacement or repair of the cable 1. Therefore, as shown in FIGS. 4 and 5, the liquid detecting member 50 of the present embodiment has two protective layers 20 and 30 in addition to the insulating member 14 and the electrode members 15a and 15b. The protective layer 20 is detachably covered with the surface on which the electrode members 15a and 15b are formed, and the electrode members 15a and 15b are covered in a liquid-tight state. The protective layer 30 is detachably covered with a surface on the opposite side to the above-described formation surface of the insulating member 14 in a liquid-tight state. The protective layers 20, 30 are used to prevent liquid that has penetrated into the inner side of the outer cover 6 from advancing to the layer of the insulating member 14. In the present embodiment, the protective layers 20 and 30 are non-porous materials containing a resin such as PET (polyethylene terephthalate). Therefore, the permeability of the protective layers 20, 30 is lower than that of the insulating member 14. Further, the protective layers 20 and 30 are peelably adhered to the insulating member 14 by an adhesive, thermocompression bonding, heat welding or the like. Further, as shown in FIG. 5, the protective layers 20 and 30 are peeled off from the insulating member 14 at a monitoring portion where a major failure occurs due to water seepage at the end portion of the cable 1 or the like. Thereby, the detection sensitivity of the liquid at the monitoring portion of the liquid detecting member 50 can be improved. On the other hand, the monitoring external position other than the monitoring portion, such as the center portion of the cable 1, is in a state in which the insulating member 14 or the electrode members 15a and 15b are directly covered without peeling off the protective layers 20 and 30. Thereby, even if the liquid penetrates into the inside of the outer cover 6, even if the protective layers 20 and 30 normally exist, the insulating member 14 does not exhibit electroconductivity by the contact of liquid. Thereby, the detection sensitivity of the liquid of the liquid detecting member 50 for monitoring the external position can be reduced. As described above, since the detection sensitivity of the liquid penetrating into the inner side of the outer cover 6 is different due to the monitoring portion of the cable 1 and the monitoring external position, replacement or repair of the unnecessary cable 1 can be suppressed. Further, in the cable 1, if the position of the monitoring portion that causes a major failure due to water seepage, the length of the necessary liquid detecting member 50, and the arrangement of the liquid detecting member 50 (winding method, etc.) are known in advance, In the manufacturing process of the liquid detecting member 50, the protective layers 20, 30 may be covered only in portions of the insulating member 14 corresponding to the monitoring external position. However, actually, depending on the installation place or setting method of the cable 1, the monitoring portion may be different. For example, there is a case where it is necessary to monitor the central portion of the cable 1 in accordance with the installation place or setting method of the cable 1. Further, depending on the core diameter of the cable core 2 around which the liquid detecting member 50 is wound, the winding pitch, and the like, the length of the liquid detecting member 50 which is necessary is also different. Therefore, in the liquid detecting member 50, it is difficult to grasp the portion corresponding to the monitored portion in advance. In addition, in the manufacturing process of the liquid detecting member 50, the use form is limited only when one of the insulating members 14 is partially covered with the protective layers 20, 30. Therefore, in the present embodiment, the protective layers 20 and 30 are peelably covered over the entire surface of the insulating member 14 during the manufacturing process of the liquid detecting member 50. Further, the protective layers 20 and 30 are peeled off only in accordance with the use form of the cable core 2, and thereafter only in the portion corresponding to the monitored portion. (Removal strength of the protective layer) In order to make the protective layers 20 and 30 easily peel off from the insulating member 14 and to make the peeling strength of the protective layers 20 and 30 uniform uniformly over the entire surface, the liquid detecting member 50 becomes opposite to the entire surface. The load from the outside is weaker. Therefore, in monitoring the external position, the protective layers 20, 30 may be accidentally peeled off from the insulating member 14, and therefore, the reliability of the cable 1 is lowered. In addition, in order to make the liquid detecting member 50 stronger than the load from the outside, the peeling strength of the protective layers 20 and 30 is uniformly increased over the entire surface, and it is difficult to self-insert the protective layers 20 and 30 at the monitoring portion. The member 14 is peeled off. Therefore, in the present embodiment, as shown in Fig. 6, the entire region of the insulating member 14 is divided into an inner region between the electrode members 15a and 15b, an arrangement region of the electrode members 15a and 15b, and an outer side other than the regions. region. Further, the peeling strength of the protective layers 20 and 30 with respect to the insulating member 14 is configured such that the inner region is smaller than the outer region. For example, when the protective layers 20 and 30 are attached to the insulating member 14 by an adhesive, an adhesive having a stronger material is used in the outer region, and an adhesive having a lower strength is used in the inner region. When the protective layers 20 and 30 are pressure-bonded to the insulating member 14 by thermocompression bonding, for example, in the outer region of the insulating member 14, the protective layers 20 and 30 are crimped over the entire length direction, and on the other hand, The inner region of the insulating member 14 is crimped to the protective layers 20, 30 at a predetermined interval in the longitudinal direction. Further, when the protective layers 20 and 30 are welded to the insulating member 14 by heat fusion, for example, the heating temperature is increased in the outer region of the insulating member 14 to weld the protective layers 20 and 30 to the inner region of the insulating member 14. The protective layers 20, 30 are welded by lowering the heating temperature. In any of the above methods, the peeling strength of the protective layers 20, 30 with respect to the insulating member 14 can be made smaller than the outer region. Further, the peeling strength of the protective layers 20 and 30 with respect to the insulating member 14 may be made smaller than the outer region by the method other than the above. With the above configuration, the outer side region of the insulating member 14 of the liquid detecting member 50 is more difficult to peel off than the inner region, and therefore, the liquid detecting member 50 is stronger with respect to the load from the outside, thereby improving the cable. The reliability of line 1. In the peeling operation of peeling off the protective layers 20 and 30 from the insulating member 14 and exposing the insulating member 14 to the outside, first, the outer side region of the insulating member 14 and the protective layer 20 are cut by the auxiliary tool. The cutting operation of the portion corresponding to the outer region. Thereby, only the protective layers 20 and 30 which are covered in the inner region with a small peeling strength remain in the monitoring portion. As a result, the protective layers 20 and 30 of the monitoring portion can be easily peeled off. In addition, since the portions of the protective layers 20 and 30 which are removed by the auxiliary tool are different from the inner regions of the insulating member 14 and are covered by the protective layer of the outer region, it is easy to secure the working space, and the work can be easily performed. Further, in the above-described cutting operation, only the protective layers 20 and 30 may be cut without cutting the insulating member 14. Further, it is also possible to cut only one of the two protective layers 20 and 30. Further, the outer region of the insulating member 14 may be further divided into an inner region on the side of the electrode members 15a and 15b and a region on the opposite side to the electrode members 15a and 15b, and the peeling strength of the protective layers 20 and 30 may be formed as the inner region. The area is smaller than the outer area. In this case, in the above-described cutting operation, even if the boundary between the outer region and the arrangement region of the insulating member 14 is not cut off, the protective layer after the cutting operation can be easily performed by cutting the inner region of the outer region. 20, 30 peeling from the insulating member 14. As described above, in the protective layers 20 and 30, even if the peeling strength of the portion covering the inner region of the insulating member 14 is relatively small, for example, the peeling strength to the extent that it can be peeled off by hand can be applied to the outside of the insulating member 14 Since the peeling strength of the portion of the region is large, the strength of the liquid detecting member 50 with respect to the mechanical load can be maintained, and the peeling operation can be easily performed. (Variation of the liquid detecting member of the second embodiment) Hereinafter, a modification of the liquid detecting member of the second embodiment will be described. In the liquid detecting member 150 shown in FIG. 7, the width of the protective layers 120, 130 covering both sides of the insulating member 14 is larger than the width of the insulating member 14. Moreover, both ends of the protective layers 120, 130 in the width direction are adjacent to each other. Thereby, the insulating member 14 and the electrode members 15a and 15b cover the entire circumference by the protective layers 120 and 130. As a result, even if the liquid penetrates into the inside of the outer cover 6, as long as the protective layers 120 and 130 are normally present, the possibility that the insulating member 14 exhibits conductivity due to liquid contact can be more reliably reduced. As a result, the reliability of the cable 1 can be improved. Further, as another modification, in the liquid detecting member 250 shown in FIG. 8, only one surface of the insulating member 214 on which the electrode members 15a and 15b are formed is covered with the protective layer 220. In this case, even when only one side of the insulating member 214 is covered with the protective layer 220, it is preferable to arrange the liquid detecting member 250 in the butted state around the cable core 2 or the like. The liquid is inhibited from advancing toward the insulating member 214. The protective layer 220 has a sheet-like protective sheet 220a and a protective layer 220a followed by an adhesive layer 224. In the present embodiment, the protective sheet 220a is a non-porous sheet containing a resin such as PET, and has lower permeability than the insulating member 214. Next, the layer 220b is made of a resin material such as an acrylic resin, a lanthanum resin, a thermoplastic elastomer resin, a rubber resin, or a polyester resin. Further, in the insulating member 214, the surface 214a of the outer region is formed in a concavo-convex shape. Thereby, the surface 214a of the outer region has a larger surface area per unit area than the surface 214b of the inner region. As a result, the contact area per unit area of the insulating member 214 with respect to the adhesive layer 220b is smaller than the outer side region. Thereby, even if the material of the adhesive agent in the inner region of the insulating member 214 and the material of the adhesive in the outer region are not changed, the entire adhesive layer 220b is formed by the adhesive of the same material, and the protective layer 220 may be used. The portion covered in the outer region of the insulating member 214 is more covered than the portion covering the inner region, and the peeling strength is higher. (Other Modifications) In the above embodiment, the insulating members 14 and 214 are formed in a sheet shape, but are not particularly limited thereto. For example, as in the liquid detecting member 350 shown in FIG. 9, the insulating member 314 formed in a cylindrical shape may be used. In this case, the electrode members 15a and 15b may be arranged in parallel along the cylindrical axis of the insulating member 314. Further, as in the liquid detecting member 450 shown in FIG. 10, the electrode members 15a and 15b may be spirally wound around the insulating member 314. Further, in the above embodiment, one liquid detecting member is provided for the cable core, but a liquid detecting member may be provided for each of the insulating core wires of the cable core. Further, in the above-described embodiment, the peeling strength of the protective layers 20 and 30 with respect to the insulating member 14 is such that the inner region is smaller than the outer region, but the peeling strength may be made uniform over the entire surface of the insulating member 14. Further, as shown in FIGS. 11 and 12, the front end portion of the cable core 2 may be connected to the waterproof connector. Hereinafter, the configuration of the female connector 500 to which the front end portion of the cable core 2 is connected to the waterproof connector will be described. Furthermore, the female connector 500 can be connected to a pair of male connectors 550 (see FIG. 13). The female connector 500 has a housing 501 comprising a rubber or elastomer. The casing 501 is integrally formed on the cable 1 by die casting at the front end of the cable 1. As shown in FIG. 12, the casing 501 has a casing body 501a and a housing portion 501b. A plurality of insulating core wires 3 of the cable core 2 are inserted into the casing body 501a. Further, a substantially rectangular abutting surface 501c that is in close contact (contact) with the abutting surface 551c of the male connector 550 is formed at an end portion of the outer casing main body 501a. A plurality of terminals 502 corresponding to the number of the insulating core wires 3 are protruded from the abutting surface 501c. The plurality of terminals 502 form two rows of terminal rows on the abutting surface 501c. The terminals 502 are each electrically connected to the wire 3a of the insulating core wire 3 in the casing body 501a. The accommodating portion 501b is connected to the peripheral edge of the abutting surface 501c of the casing body 501a, and can accommodate the following accommodating portion 551b of the male connector 550. As shown in FIG. 13, the male connector 550 has a housing 551 containing rubber or an elastomer. The casing 551 has a casing body 551a and a accommodating portion 551b. A plurality of wires (not shown) are disposed in the casing body 551a. The accommodating portion 551b is connected to the front end portion of the casing main body 551a, and is housed in the accommodating portion 501b of the female connector 500 when the female connector 500 is connected to the male connector 550. A substantially rectangular abutting surface 551c that abuts against the abutting surface 501c of the female connector 500 is formed at an end portion of the accommodating portion 551b. Further, a plurality of contact holes 552 into which the female terminal 502 is inserted are formed in the contact surface 551c. The contact holes 552 are arranged in two rows on the abutting surface 551c. Each of the contact holes 552 is provided with a terminal (not shown) electrically connected to the terminal 502 of the female connector 500, and the above-mentioned lead wire connected to the terminal. According to the above configuration, when the female connector 500 is connected to the male connector 550, the terminal 502 of the female connector 500 is electrically connected to the terminal of the male connector 550. Moreover, at this time, the accommodating portion 551b of the male connector 550 is housed in the accommodating portion 501b of the female connector 500, and the abutting surface 501c is in close contact with the abutting surface 551c. Thereby, liquid is prevented from infiltrating between the female connector 500 and the male connector 550. Further, a sealing material may be provided over the entire circumference of the accommodating portion 551b, and when connected to the female connector 500, the accommodating portion 551b and the accommodating portion 501b may be sealed by the sealing material. Moreover, in the above, the female connector 500 that connects the cable 1 and the male connector 550 that connects the female connector 500 are connectors in which the terminals are arranged in two rows, but the invention is not limited thereto. For example, it may be of the type of waterproof connector shown in FIGS. 14 and 15. Specifically, the housing 601 of the female connector 600 and the housing 651 of the male connector 650 are each substantially cylindrical. As shown in FIG. 14, the housing 601 of the female connector 600 has a housing body 601a and a housing portion 601b. The abutting surface 601c of the casing body 601a has a substantially circular shape, and the plurality of terminals 602 are arranged in four rotational symmetry centering on the center of the abutting surface 601c. As shown in FIG. 15, the housing 651 of the male connector 650 has a housing body 651a and a accommodating portion 651b. The abutting surface 651c of the accommodating portion 651b has a substantially circular shape, and the plurality of contact holes 652 are arranged to have four rotational symmetry about the center of the abutting surface 651c. Moreover, when the female connector 600 is connected to the male connector 650, the abutting surface 601c is in close contact with the abutting surface 651c, and the front end of the accommodating portion 601b is in close contact with the front end of the casing main body 651a. Further, a gasket member 653 is provided at the front end of the casing main body 651a, and the casing member 651a and the accommodating portion 601b are sealed by the gasket member 653,. In the above configuration, liquid is also prevented from infiltrating between the female connector 600 and the male connector 650. Further, as another modification, when the cable 1 is used as a cable for electrical equipment wiring, as shown in Fig. 16, at the front end of the cable 1, the wire 3a of the insulating core wire 3 can also be relatively It is directly connected to an electrical machine 700 such as a lighting machine. In the above detailed description, the present invention has been described with respect to the features of the present invention, but the present invention is not limited to the embodiments described in the above detailed description, and may be applied to other embodiments. The scope of application should be interpreted as widely as possible. Further, the terms and grammars used in the present specification are intended to describe the present invention accurately, and the user is not intended to limit the explanation of the present invention. Further, it is considered that other configurations, systems, methods, and the like included in the concept of the present invention are easily inferred from the concept of the invention described in the specification. Therefore, the description of the scope of the patent application should be construed as including the constituents of the equivalents within the scope of the technical idea of the invention. Further, in order to fully understand the object of the present invention and the effects of the present invention, it is preferable to fully consider the disclosed documents and the like.

1‧‧‧ cable
2‧‧‧ cable core
3‧‧‧Insulated heart
3a‧‧‧Wire
3b‧‧‧Insulation coating
5‧‧‧Liquid detection components
6‧‧‧Overlay
7‧‧‧Measurement device
8‧‧‧Connector
9‧‧‧Box
14‧‧‧Insulating components
15a‧‧‧Electrode components
15b‧‧‧Electrode components
20‧‧‧Protective layer
30‧‧‧Protective layer
50‧‧‧Liquid detection components
71a‧‧‧Connector components
71b‧‧‧Connector components
72‧‧‧resistance measurement circuit
73‧‧‧A/D conversion circuit
74‧‧‧Operating circuit
75‧‧‧ROM
76‧‧‧RAM
77‧‧‧Communication interface
78‧‧‧Power circuit
120‧‧‧Protective layer
130‧‧‧Protective layer
150‧‧‧Liquid detection components
214‧‧‧Insulating components
214a‧‧‧ Surface of the outer area
214b‧‧‧ Surface of the inner area
220‧‧‧Protective layer
220a‧‧‧protection film
220b‧‧‧Next layer
250‧‧‧Liquid detection components
314‧‧‧Insulating components
350‧‧‧Liquid detection components
450‧‧‧Liquid detection components
500‧‧‧Female connector
501‧‧‧shell
501a‧‧‧Shell body
501b‧‧‧ Housing Department
501c‧‧‧ Abutment
502‧‧‧ female terminal
550‧‧‧ male connector
551‧‧‧Shell
551a‧‧‧Shell body
551b‧‧‧Resident Department
551c‧‧‧Abutment
552‧‧‧Contact hole
600‧‧‧Female connector
601‧‧‧shell
601a‧‧‧Shell body
601b‧‧‧ Housing Department
601c‧‧‧ Abutment
602‧‧‧ terminals
650‧‧‧ male connector
651‧‧‧Shell
651a‧‧‧Shell body
651b‧‧‧Resident Department
651c‧‧‧Abutment
652‧‧‧Contact hole
653‧‧‧Cushing material
700‧‧‧Electrical machines

Fig. 1 is an explanatory view showing an outline of a cable of the first embodiment. Fig. 2 is an explanatory view showing a cross-sectional structure of the liquid detecting member shown in Fig. 1; Fig. 3 is a block diagram showing the electrical configuration of the measuring device shown in Fig. 1. Fig. 4 is an explanatory view showing a cross-sectional structure of a liquid detecting member according to a second embodiment. Fig. 5 is a view showing a connection state of a cable and a connector in the second embodiment. Fig. 6 is a plan view showing a liquid detecting member of a second embodiment. Fig. 7 is an explanatory view showing a cross-sectional structure of a liquid detecting member according to a modification. Fig. 8 is an explanatory view showing a cross-sectional structure of a liquid detecting member according to a modification. Figure 9 is a perspective view of a cable of a variation. Figure 10 is a perspective view of a cable of a variation. Fig. 11 is an explanatory view showing a connection relationship between a cable and a waterproof connector. Figure 12 is a perspective view of the female connector. Figure 13 is a perspective view of a male connector. Figure 14 is a perspective view of a female connector of a variation. Figure 15 is a perspective view of a male connector of a variation. Fig. 16 is an explanatory view showing a connection relationship between a cable and an electric machine.

1‧‧‧ cable

2‧‧‧ cable core

3‧‧‧Insulated heart

3a‧‧‧Wire

3b‧‧‧Insulation coating

5‧‧‧Liquid detection components

6‧‧‧Overlay

7‧‧‧Measurement device

8‧‧‧Connector

9‧‧‧Box

14‧‧‧Insulating components

15a‧‧‧Electrode components

15b‧‧‧Electrode components

Claims (8)

A cable characterized by: a cable core; a liquid detecting member disposed together with the cable core; and an outer cover covering the cable core and the liquid detecting member; and the liquid detecting member has: The insulating member exhibits conductivity by contact with a liquid; and a plurality of linear electrode members are provided on the same surface of the insulating member in a contact state and electrically separated from each other. The cable of claim 1, wherein the insulating member is formed in a sheet shape, and the electrode members are disposed in parallel with each other on a surface of the insulating member. The cable of claim 2, wherein the liquid detecting member is disposed in a spiral shape around the cable core. The cable according to any one of claims 1 to 3, wherein the liquid detecting member has a protective layer that releasably covers the insulating member and the electrode member. The cable of claim 1, wherein the liquid detecting member is formed in a sheet shape, and the electrode members are disposed in parallel with each other on a surface of the insulating member, and have the insulating member and the insulating member a protective layer of the electrode member, wherein a peeling strength of each of the protective layer with respect to an inner region between the electrode members of the insulating member and an outer region other than the inner region and the electrode member is an inner region Less than the outer area described above. A liquid detecting member for a cable, characterized in that it is disposed on the outer side of the cable, and has an insulating member that exhibits conductivity by contact with a liquid; a plurality of linear electrodes The member is disposed in the contact state in the contact state and electrically separated from each other, and a protective layer that peelably covers the insulating member and the electrode member. The liquid detecting member for a cable according to claim 6, wherein the insulating member is formed in a sheet shape, and the electrode members are disposed in parallel with each other on a surface of the insulating member, wherein the protective layer is opposite to the electrode member of the insulating member The peeling strength of each of the inner region and the outer region other than the inner region and the electrode member arrangement region is such that the inner region is smaller than the outer region. The liquid detecting member for a cable according to claim 7, wherein the protective layer has a sheet-like protective sheet; and an adhesive layer which is followed by the insulating member; and the insulating member is per unit area of the adhesive layer The contact area is such that the inner region is smaller than the outer region.