JP6268631B2 - Wire cable - Google Patents

Description

  The present invention relates to a wire cable.

  Conventionally, wire cables are used in operation systems and power transmission systems of various devices and devices. Such a wire cable is required to have excellent performance such as operability and responsiveness, is easy to attach, is not easily broken during use, and is durable enough to be used safely over a long period of time. Moreover, when inserting and using the inside of a conduit | pipe, having high slidability is calculated | required. Here, as a wire cable mainly for the purpose of improving durability and slidability, a wire cable in which oil is impregnated inside the cable and the outer periphery of the cable is covered with a nonmetallic coating material is disclosed in Patent Literature 1 is disclosed.

JP-A-8-120579

  Since the above-mentioned wire cable is impregnated with oil, the wire cable has a certain effect against early disconnection and rusting due to frictional (fretting) wear between the wires constituting the wire cable. . Further, since the outer periphery of the cable is covered with a non-metallic coating material, the slidability is also good. However, there is still room for improvement regarding the suppression of internal disconnection of the wires constituting the cable and the improvement of the slidability, and the development of a wire cable having higher durability and excellent slidability is desired. Yes.

  The present invention has been made to solve such a problem, and an object thereof is to provide a wire cable having high durability and slidability.

  The object of the present invention is a wire cable comprising a core wire and a plurality of side wires twisted around the core wire, wherein at least one of the plurality of side wires has a resin on its outer periphery. It is achieved from a wire cable characterized by comprising a layer.

  In this way, by configuring at least one of the plurality of side wires disposed around the core wire to include the resin layer on the outer periphery, the side wires are rubbed with each other, It can suppress that a core wire material rubs, and can prevent the internal disconnection of a wire cable effectively. In addition, when the wire cable is used by being inserted into the inside of the conduit, the resin layer disposed on the surface of the side wire exhibits the effect of reducing the sliding resistance with the inner surface of the conduit, so that it is high. Slidability can be obtained.

  In this wire cable, the resin layer is preferably formed by spirally winding a resin wire around the surface of the side wire and heat-sealing it. Thus, when the resin layer disposed on the surface of the side wire is formed by winding the resin wire on the surface of the side wire in a spiral shape and heat-sealing, the resin layer was wound in a spiral shape. Since the resin wire becomes a protrusion protruding from the surface of the side wire, the contact area with the inner surface of the conduit is reduced, and the sliding resistance can be further reduced. As a result, higher slidability can be imparted to the wire cable. In addition, since there is a resin layer composed of a resin wire arranged by spirally winding the surface of the side wires, the side wires rub against each other, or the side wires and the core wire rub against each other. Can be effectively suppressed.

  Moreover, it is preferable that each side wire which is not adjacent to each other among the plurality of side wires has the resin layer on the outer periphery thereof. When such a configuration is employed, the flexibility of the wire cable can be effectively maintained.

  Moreover, it is preferable that the side wire materials other than each said side wire material in which the said resin layer is formed have the coating layer by resin formed in the surface. By employ | adopting such a structure, the internal disconnection of a wire cable can be prevented much more effectively.

  Moreover, it is preferable that the said resin layer is formed by coating resin on the surface of the said side wire. In this way, instead of forming a resin layer by spirally winding a resin wire around the surface of the side wire, and forming a resin layer, a resin layer is formed by coating the resin on the surface of the side wire Even when the side wires are rubbed against each other and the side wires and the core wire are rubbed against each other, the wire cable is effectively prevented from being internally disconnected and the wire cable is connected to the inside of the conduit. It is possible to reduce the sliding resistance with the inner surface of the conduit when used by being inserted into the tube.

  Moreover, it is preferable that the said core wire material is equipped with the resin layer for core wires on the surface. Thus, by forming the core wire resin layer on the surface of the core wire material, the core wire material and the side wire material can be effectively prevented from rubbing and the core wire material and the side wire material are internally disconnected. Can be prevented.

  Moreover, it is preferable that the said core wire material is a twisted wire member provided with the some strand for core wires, and at least 1 is equipped with the resin layer for core wires in the outer periphery among the said some strands for core wire. The core wire element resin layer is preferably formed by spirally winding a resin wire around the surface of the core element wire and thermally fusing it. Moreover, it is preferable that the said resin layer for core wire is formed by coating resin on the surface of the said core wire. Thus, when forming a core wire material with a stranded wire member provided with a plurality of core wire elements, a configuration in which at least one of the plurality of core wire elements includes a core wire resin layer on the outer periphery thereof is adopted. Thereby, it becomes possible to suppress effectively the internal disconnection in a core wire material, and a much more durable wire cable can be obtained.

  According to the present invention, a wire cable having high durability and slidability can be provided.

It is a schematic structure sectional view of a wire cable concerning one embodiment of the present invention. It is a principal part expanded side view of the side wire with which the wire cable shown in FIG. 1 is provided. It is schematic structure sectional drawing which shows the modification of the wire cable shown in FIG. It is schematic structure sectional drawing which shows the modification of the wire cable shown in FIG. It is schematic structure sectional drawing which shows the modification of the wire cable shown in FIG. It is schematic structure sectional drawing which shows the modification of the wire cable shown in FIG. It is explanatory drawing for demonstrating the content of the slidability evaluation test of the wire cable which concerns on this invention. It is explanatory drawing for demonstrating the structure of the wire cable used in the slidability evaluation test.

  Hereinafter, a wire cable according to an embodiment of the present invention will be described with reference to the accompanying drawings. Each figure is partially enlarged or reduced in order to facilitate understanding of the configuration. FIG. 1 is a schematic cross-sectional view of a wire cable 1 according to an embodiment of the present invention. This wire cable 1 is a long and flexible cable, and is a cable used for an operation system and a power transmission system of various apparatuses and devices. As shown in FIG. 1, the wire cable 1 includes a core wire 2 and a plurality of side wires 3 twisted around the core wire 2.

  The core wire 2 is a long wire-like member having flexibility. The core wire 2 can be formed using various conventional materials used as the core of the wire cable 1. As the core wire 2, for example, various metal wires such as stainless steel, piano wire, cobalt alloy wire, and alloy wire showing pseudoelasticity (including a superelastic alloy) can be used.

  Various forms can be adopted as the form of the core wire 2. For example, the core wire 2 may be formed by a single metal wire, or the core wire 2 may be formed by folding a single metal wire and then twisting it. Moreover, the core wire material 2 may be formed by twisting a plurality of metal wires, or may be formed by twisting a metal wire and a linear resin member. Further, various configurations such as those in which the central portion and the surface portion are formed of different materials can be employed.

  Further, the core wire 2 may be configured such that the outer diameter thereof is substantially constant, or the tip portion may be formed in a tapered shape in which the outer diameter decreases in the tip direction. Good. When the tip portion of the core wire 2 is configured to have a tapered shape whose outer diameter decreases in the tip direction, the rigidity (bending rigidity, torsion rigidity) of the core wire 2 gradually decreases in the tip direction. As a result, good flexibility can be imparted to the distal end portion of the wire cable 1, and bending or the like can be prevented.

  The plurality of side wires 3 twisted around the core wire 2 are also long wire-like members having flexibility like the core wire 2. The side wire 3 can be formed using various conventional materials used as the side wire 3 constituting the wire cable 1. As the side wire 3, various metal wires such as stainless steel, piano wire, cobalt alloy wire, and alloy wire (including superelastic alloy) exhibiting pseudoelasticity can be used.

  Various forms can be adopted as the form of the side wire 3. For example, the side wire 3 may be formed by a single metal wire, or the side wire 3 may be formed by folding a single metal wire and then twisting it. Moreover, the side wire 3 may be formed by twisting a plurality of metal wires, or may be formed by twisting a metal wire and a linear resin member. Further, various configurations such as those in which the central portion and the surface portion are formed of different materials can be employed.

  In the wire cable 1 in the present invention, at least one of the plurality of side wires 3 is configured to have a resin layer 4 on the outer periphery thereof. This resin layer 4 is formed by spirally winding a resin wire 41 around the surface of the side wire 3 and heat-sealing it as shown in FIG. It is preferred that The cross-sectional view of FIG. 1 shows a configuration in which all the side wires 3 twisted around the core wire 2 are provided with the resin layer 4.

  The resin wire 41 can be formed from various resin materials. For example, the resin wire 41 is preferably formed of a slippery resin. The slippery resin has, for example, lubricity. Fluorine resin can be mentioned. Examples of such a fluororesin include tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA, melting point 300 to 310 ° C.), polytetrafluoroethylene (PTFE, melting point 330 ° C.), tetrafluoroethylene-hexafluoro. Propylene copolymer (FEP, melting point 250-280 ° C), ethylene-tetrafluoroethylene copolymer (ETFE, melting point 260-270 ° C), polyvinylidene fluoride (PVDF, melting point 160-180 ° C), polychlorotrifluoroethylene (PCTFE, melting point 210 ° C.), tetrafluoroethylene-hexafluoropropylene-perfluoroalkyl vinyl ether copolymer (EPE, melting point 290-300 ° C.) and the like, and copolymers containing these polymers, etc. Hydrophobic resins. Of these, PFA, PTFE, FEP, ETFE, and PVDF are preferable because they have excellent sliding characteristics. In addition, as the slippery resin, polyamide, polyester, polycarbonate, urethane, silicone, hydrophobic resin such as polyethylene and polypropylene, polyvinyl alcohol, polyvinyl pyrrolidone, polyethylene oxide polymer material, maleic anhydride-based polymer material, Hydrophilic resins such as acrylamide polymer materials and water-soluble nylon can also be used. The method for producing the resin wire 41 from these resins is not particularly limited. For example, a conventionally known method such as a method of spinning a raw material by extrusion molding can be used. As the resin wire 41, one having a maximum diameter of 10 μm or more and 200 μm or less before heat-sealing to the side wire 3 can be preferably used.

  Further, the resin wire 41 is manufactured by combining a wire-like member manufactured by combining the above-described resin material alone, a wire-like member manufactured by combining different types of resin materials, a resin material, and a metal material. It is a concept including a wire-like member manufactured by combining a wire-like member, a resin material, and a non-metallic material. The form of the resin wire 41 may be a single wire or a stranded wire formed by twisting the same type of single wires. Further, it may be a stranded wire formed by twisting different types of single wires.

  A method of winding the resin wire 41 around the side wire 3 is not particularly limited, and examples thereof include a method of winding using a covering device used for manufacturing a covering yarn.

  As described above, the resin wire 41 is spirally wound around the surface of the side wire 3 and heat-sealed. However, the resin wire 41 is adjacent to the side wire 3 in the direction along the longitudinal direction. The space | interval of the wire 41 can be set arbitrarily. For example, the resin wire 41 adjacent in the direction along the longitudinal direction of the side wire 3 may be configured to be in close contact with each other, or a predetermined interval is provided in the direction along the longitudinal direction of the side wire 3. You may comprise so that it may provide. Further, the interval between the adjacent resin wire members 41 may be set to be wide in a part and set to be narrow in other parts. In the case where a predetermined interval is formed between the resin wire 41 adjacent in the direction along the longitudinal direction of the side wire 3, for example, the wire pitch of the resin wire 41 in the direction along the longitudinal direction of the side wire 3 is set. The resin wire 41 is preferably configured to be in the range of 1 to 10 times the maximum diameter. The wire pitch of the resin wire 41 is a concept representing the distance between the centers of the resin wire 41 adjacent to each other in the direction along the longitudinal direction of the side wire 3 as shown in the side view of FIG.

  The resin wire 41 constituting the resin layer 4 is spirally wound around the surface of the side wire 3 and heat-sealed. However, the resin wire 41 is heat-fused to the surface of the side wire 3. As a method of attaching, for example, the resin wire 41 is spirally wound around the surface of the side wire 3 and then heated to melt the resin wire 41, so that the resin wire 41 is moved to the side wire 3. And a method of fusing to the surface of the substrate. As a heating method, for example, it can be performed by applying heat from the outside of the resin wire 41 wound around the side wire 3 using a chamber heat treatment apparatus.

  In particular, when the side wire 3 is made of a conductive material (a material that can easily conduct electricity) and the resin wire 41 is made of a material having lower magnetism than the side wire 3, the side wire 3 The side wire 3 is electromagnetically heated by an electromagnetic induction heating device from the outside of the resin wire 41 arranged on the wire 3, and the resin wire 41 and the side wire 3 are heated by the heat of the heated side wire 3. It is preferable to fuse the resin wire 41 to the outer surface of the side wire 3 such that at least one of the facing regions is melted and the resin wire 41 is fused to the side wire 3. The material having lower magnetism than the side wire 3 is a concept including a material having no magnetism in addition to a material having magnetism weaker than that of the side wire 3. Electromagnetic induction heating is a type of heating method that is also used in electromagnetic cookers (IH cooking heaters), high-frequency welding, etc., and causes a change in magnetic field (magnetic flux density) by passing an alternating current through the coil. This is a heating method that utilizes the principle of generating an induced current (eddy current) in a conductive substance placed in the magnetic field and generating heat by the resistance of the conductive substance itself.

  Since the density of the induced current generated in the electromagnetic wire heated side wire 3 increases from the center of the side wire 3 to the surface thereof, the surface is heated faster than the inside of the side wire 3. (Concentrated heating). Therefore, when the melting point of the side wire 3 is lower than the melting point of the resin wire 41, the surface of the side wire 3 heated in a concentrated manner (the region facing the resin wire 41 in the side wire 3 (contact) Region)) will melt. Further, when the melting point of the resin wire 41 is lower than the melting point of the side wire 3, the heat generated by the side wire 3 is transmitted to the resin wire 41, and the resin wire 41 has a side wire 3 contact with the side wire 3. The opposing area (contact area) will melt. In addition, by setting the frequency of the current flowing in the electromagnetic induction heating device (AC current flowing in the coil) high, it is possible to collect the heat generating parts in the side wire 3 on the surface, and conversely, the current frequency is lowered. By setting, the inside of the side wire 3 can also generate heat uniformly, so that it is preferable that the frequency of the current flowing through the electromagnetic induction heating device can be changed as appropriate.

  By performing electromagnetic induction heating in this way, the resin wire 41 and the side wire 3 are quickly softened or melted at the contact interface and in the vicinity thereof, so that the molecular orientation that contributes to the physical properties of the resin wire 41 is maintained. It is easy to keep the mechanical strength of the resin wire 41 higher. In addition, unlike the heat transfer or radiation from the outside, heating by energy beam irradiation, etc., the outer surface of the side wire 3 is softened or melted only at the contact interface between the resin wire 41 and the side wire 3 and its vicinity. It becomes easy to maintain the surface uneven shape on the side to be.

  Further, in order to more firmly bond the resin wire 41 to the outer surface of the side wire 3, after applying an adhesive such as a primer to the outer surface of the side wire 3, the outer surface of the side wire 3 is applied. It is preferable that the resin wire 41 is wound around and then heated to melt the adhesive and the resin wire 41 so that the resin wire 41 is fused onto the side wire 3.

  The wire cable 1 according to the present embodiment is configured such that at least one of the plurality of side wires 3 arranged around the core wire 2 is provided with the resin layer 4 on the outer periphery thereof. The friction between the three wires and the friction between the side wire 3 and the core wire 2 can be suppressed, and the internal disconnection of the wire cable 1 can be effectively prevented. Further, when the wire cable 1 is used by being inserted into the inside of the conduit, the resin layer 4 disposed on the surface of the side wire 3 exhibits an effect of reducing sliding resistance with the inner surface of the conduit. Therefore, high slidability can be obtained.

  Moreover, the wire cable 1 which concerns on this embodiment is formed by the resin layer 4 winding the resin-made wire 41 on the surface of the side wire 3 helically, and heat-seal | fusing it. Therefore, since the resin wire 41 wound spirally forms a convex portion protruding from the surface of the side wire 3, the contact area between the side wire 3 and the inner surface of the conduit is greatly reduced. Further, the sliding resistance can be further reduced. As a result, even higher slidability can be imparted to the wire cable 1. In addition, since the resin layer 4 comprised by the resin wire 41 arrange | positioned by spirally winding the surface of the side wire 3 exists, the side wires 3 mutually rub against each other or the side wire 3 and the core. The rubbing with the wire 2 can be effectively suppressed.

  The wire cable 1 according to the present invention has been described above, but the specific configuration is not limited to the above embodiment. For example, as shown in FIG. 3, you may comprise so that each side wire 3 which is not mutually adjacent | abutted among several side wire 3 may be equipped with the resin layer 4 in the outer periphery. When such a configuration is employed, the flexibility of the wire cable 1 can be effectively maintained as compared with the case where the resin layer 4 is formed on all the side wires 3. Specifically, for example, when the resin layer 4 is formed by spirally winding the resin wire 41 around the surface of all the side wires 3 and heat-sealing them, While the effect that internal disconnection can be reliably suppressed can be obtained, a convex portion (a convex portion that protrudes from the surface of the side wire 3) is formed by the resin wire 41 disposed on the side wires 3 adjacent to each other. ) May be engaged with each other, and the flexibility of the wire cable 1 may be deteriorated. On the other hand, when each side wire 3 which is not adjacent to each other among the plurality of side wires 3 is configured to have the resin layer 4 on the outer periphery thereof, the side wires 3 are arranged on the adjacent side wires 3. Since the convex portion constituted by the resin wire 41 is not meshed, the flexibility of the wire cable 1 can be effectively maintained.

  Moreover, in the said embodiment, you may comprise so that the coating layer by resin may be formed in the surface with respect to side wire 3 other than the side wire 3 in which the resin layer 4 is formed. By adopting such a configuration, the internal disconnection of the wire cable 1 can be prevented more effectively, and high slidability is imparted when the wire cable 1 is inserted into the conduit and used. It becomes possible to do.

  Moreover, in the said embodiment, the resin layer 4 arrange | positioned on the surface of the side wire 3 is formed by winding the resin wire 41 around the surface of the side wire 3, and heat-sealing it. However, for example, the resin layer 4 may be formed by coating a resin on the surface of the side wire 3. Thus, even when the resin layer 4 is formed by coating the surface of the side wire 3 with the resin, the side wires 3 rub against each other, or the side wire 3 and the core wire 2 rub against each other. It is possible to effectively prevent the internal disconnection of the wire cable 1 and to reduce the sliding resistance with the inner surface of the conduit when the wire cable 1 is inserted into the conduit and used. Become. In addition, as resin coated on the surface of the side wire 3, the resin material which forms the above-mentioned resin wire 41 can be illustrated.

  Moreover, in the said embodiment, as shown to the schematic structure sectional drawing of FIG. 4, you may comprise so that the core wire material 2 may be equipped with the resin layer 21 for core wires on the surface. The core wire resin layer 21 can be formed by spirally winding a resin wire 21 a around the surface of the core wire 2 and thermally fusing it. Here, as the resin wire 21 a wound around the surface of the core wire 2, the same type of wire as the resin wire 41 wound around the surface of the side wire 3 can be used. Thus, by forming the core wire resin layer 21 on the surface of the core wire 2, it is possible to effectively prevent the core wire 2 and the side wires 3 from rubbing, and the core wire 2 and the side wires can be effectively prevented. It is possible to prevent 3 from being disconnected internally. Further, instead of forming the core wire resin layer 21 by spirally winding the resin wire 21a around the surface of the core wire 2 and thermally fusing it, the surface of the core wire 2 is coated with a resin. The resin layer 21 may be formed. In addition, as resin coated on the surface of the core wire 2, the resin material which forms the above-mentioned resin wire 41 can be illustrated.

  Moreover, in the said embodiment, when comprising the core wire material 2 from the strand wire member provided with the some strand 22 for core wires, as shown in the schematic structure sectional drawing of FIG. One may be configured to include the core wire element resin layer 23 on the outer periphery thereof. The core wire resin layer 23 is preferably formed by spirally winding a resin wire 23a around the surface of the core wire 22 and thermally fusing it. As described above, when the stranded wire member including the plurality of core wire elements 22 is used as the core wire member 2, at least one of the plurality of core wire elements 22 includes the core wire element resin layer 23 on the outer periphery thereof. By employ | adopting a structure, it becomes possible to suppress the internal disconnection in the core wire material 2 effectively, and the wire cable 1 with much higher durability can be obtained. Here, as the resin wire 23 a wound around the surface of the core wire 22, the same kind of wire as the resin wire 41 wound around the surface of the side wire 3 can be used. Also, instead of forming the core wire element resin layer 23 by spirally winding and heat-sealing a resin wire 23a around the surface of the core element wire 22, a resin is applied to the surface of the core element wire 22. The core wire element resin layer 23 may be formed by coating. In addition, as resin coated on the surface of the strand 22 for core wires, the resin material which forms the above-mentioned resin wire 41 can be illustrated.

  Moreover, in the said embodiment, as shown in the schematic structure sectional drawing of FIG. 1, it forms a layer with respect to the core wire 2, and twists the several side wire 3 around the core wire 2. As shown in FIG. The wire cable 1 is formed together, but is not particularly limited to such a configuration. For example, as shown in the schematic configuration cross-sectional view of FIG. The wire cable 1 may be formed by twisting a plurality of side wires 3 around the core wire 2. When comprised in this way, as shown in FIG. 6, it is preferable to comprise so that the resin layer 4 may be formed with respect to the side wire 3 which forms the outermost layer in the wire cable 1. FIG. In FIG. 6, the side wires 3 that are not adjacent to each other among the plurality of side wires 3 that form the outermost layer of the wire cable 1 are configured to include the resin layer 4 on the outer periphery thereof.

  Moreover, in the said embodiment, as shown in the side view of FIG. 2, the resin layer 4 is comprised by winding the resin wire 41 in the shape of a spiral around the surface of the side wire 3, and heat-seal | fusing it. However, for example, by winding a plurality of resin wire 41 having the same or different thickness around the surface of the side wire 3 in a spiral shape (double spiral shape) and heat-sealing, the resin layer 4 is formed. It may be formed.

  In the above embodiment, the resin wire 41 wound around the surface of the side wire 3 (or the resin wire 21a wound around the surface of the core wire 2 or the surface of the core wire 22 is used. The cross-sectional shape of the wound resin wire 23a) is not particularly limited, and the cross-sectional shape may be circular or non-circular. Examples of the non-circular cross-sectional shape include an elliptical shape, a polygonal cross-sectional shape, and a fan-shaped cross-sectional shape. When the resin layer 4 is configured using the resin wire 41 having a non-circular cross section in this way, a more complicated uneven shape is formed in the resin layer 4 than when the resin wire 41 having a circular cross section is used. Therefore, for example, when the wire cable 1 is used by impregnating the lubricating oil, it is possible to effectively suppress the lubricating oil from flowing out of the wire cable 1, and the slidability of the wire cable 1 can be reduced. It can be maintained for a long time, and internal disconnection can be effectively prevented. Even when the resin layer 4 is configured using the resin wire 41 having a non-circular cross section, the portion in contact with the inner surface of the conduit is the outermost portion (top) of the resin wire 41. Therefore, the slidability of the wire cable 1 with respect to the conduit does not deteriorate.

  Since the inventors of the present invention conducted a test for evaluating the slidability of the wire cable 1, the contents of the test and the evaluation results will be described below. As shown in FIG. 7, the test contents are arranged by placing a flexible pipe (conduit) 72 along four grooved rollers 71, and passing the wire cable 1 through the pipe 72. The force gauge 74 is suspended at one end of the wire cable 1 and a force gauge 74 is connected to the other end of the wire cable 1, and the force gauge 74 is pulled upward by the uniaxial drive device 75, thereby being measured by the force gauge 74. The slidability of the operation wire 8 was evaluated based on the dynamic frictional force of the wire cable 1 sliding inside the pipe 72.

  Here, the weight 73 suspended from one end of the wire cable 1 was 600 g, and the traction speed of the uniaxial driving device 75 was 2.0 mm / sec. Further, as the pipe 72 through which the wire cable 1 is inserted, a flexible circular tube having an inner diameter of 2.0 mm and an inner surface material of polyethylene was used. As the force gauge 74, a digital force gauge (ZP-50N) manufactured by Imada was used.

  Moreover, as the wire cable 1, five types of samples (sample 1 to sample 5) were prepared, and the dynamic friction force of the wire cable 1 sliding in the pipe 72 was measured for each sample by the above method.

  Each sample will be described. Samples 1 to 4 have the structure shown in the schematic cross-sectional view of FIG. 8, and one core wire 2 and 18 sides twisted around the core wire 2. It formed so that the square wire 3 might be provided. Sample 1 employs a strand made of SUS304 having a wire diameter of 0.2 mm as the core wire 2. A core wire resin layer 21 is formed on the surface of the core wire 2. The core wire resin layer 21 is made of a PFA resin resin wire 21 a having a wire diameter of 50 μm so that the wire pitch is 150 μm. It is formed by being wound around the core wire 2 in a spiral shape and heat-sealing. The side wire 3 twisted around the core wire 2 was a SUS304 strand having a wire diameter of 0.2 mm. In addition, six side wires 3 that are not adjacent to each other among the twelve side wires 3 that form the outermost layer of the sample 1 are configured to include the resin layer 4 on the outer periphery thereof. The resin layer 4 was formed by winding and heat-sealing a resin wire 41 made of PFA resin having a wire diameter of 50 μm in a spiral shape with a wire pitch of 150 μm.

  Sample 2 employs a SUS304-made strand having a wire diameter of 0.2 mm as the core wire 2. A core wire resin layer 21 is formed on the surface of the core wire 2. The core wire resin layer 21 is made of a polyamide resin resin wire 21 a having a wire diameter of 50 μm and a wire pitch of 150 μm. It is formed by being wound around the core wire 2 in a spiral shape and heat-sealing. The side wire 3 twisted around the core wire 2 was a SUS304 strand having a wire diameter of 0.2 mm. In addition, six side wires 3 that are not adjacent to each other among the twelve side wires 3 that form the outermost layer of the sample 2 are configured to include the resin layer 4 on the outer periphery thereof. The resin layer 4 was formed by spirally winding and heat-sealing a resin wire 41 made of polyamide resin having a wire diameter of 50 μm so that the wire pitch is 150 μm.

  Sample 3 employs, as core wire 2, a SUS304-made wire having a wire diameter of 0.2 mm. A core wire resin layer 21 is formed on the surface of the core wire 2. The core wire resin layer 21 is made of a polyamide resin resin wire 21 a having a wire diameter of 50 μm and a wire pitch of 150 μm. It is formed by being wound around the core wire 2 in a spiral shape and heat-sealing. The side wire 3 twisted around the core wire 2 was a SUS304 strand having a wire diameter of 0.2 mm. In addition, six side wires 3 that are not adjacent to each other among the twelve side wires 3 that form the outermost layer of the sample 3 are configured to include the resin layer 4 on the outer periphery thereof. The resin layer 4 was formed by winding and heat-sealing a resin wire 41 made of PFA resin having a wire diameter of 50 μm in a spiral shape with a wire pitch of 150 μm.

  Sample 4 employs, as the core wire 2, a strand made of SUS304 having a wire diameter of 0.2 mm. A core wire resin layer 21 is formed on the surface of the core wire 2, and the core wire resin layer 21 is formed by coating a PFA resin. The coating thickness of the PFA resin is 20 μm. The side wire 3 twisted around the core wire 2 was a SUS304 strand having a wire diameter of 0.2 mm. In addition, six side wires 3 that are not adjacent to each other among the twelve side wires 3 that form the outermost layer of the sample 4 are configured to include the resin layer 4 on the outer periphery thereof. The resin layer 4 is formed by coating the surface of the side wire 3 with PFA resin. The thickness of the core wire resin layer 21 is 20 μm.

  The sample 5 was made into the structure which is not provided with the resin layer 21 for core wires, or the resin layer 4 with respect to the structure of the samples 1-4. Specifically, a strand made of SUS304 having a wire diameter of 0.2 mm was used as the core wire 2. Moreover, the 18 side wire 3 twisted around the core wire 2 used the strand made from SUS304 with a wire diameter of 0.2 mm.

  Table 1 shows the measurement results of the dynamic friction force for these samples 1 to 5.

As can be seen from Table 1, the sample 1 is configured to include the resin layer 4 on the outer periphery of the six side wires 3 that are not adjacent to each other among the twelve side wires 3 that form the outermost layer of the wire cable 1. -4 has a kinetic frictional force reduced by about 28% to 43% compared to the sample 5 in which the resin layer 4 is not formed, and the wire cable 1 according to the present invention is extremely excellent in slidability. I understand that. In addition, the reduction rate in Table 1 was calculated by the following formula.
(Dynamic friction force of sample 5−dynamic friction force of each sample) / (dynamic friction force of sample 5) × 100

DESCRIPTION OF SYMBOLS 1 Wire cable 2 Core wire material 21 Core wire resin layer 22 Core wire element wire 23 Core wire element resin layer 3 Side wire material 4 Resin layer 41 Resin wire material

Claims (5)

A wire cable comprising a core wire and a plurality of side wires twisted around the core wire,
Each of the side wires that are not adjacent to each other among the plurality of side wires includes a resin wire wound spirally around the outer periphery thereof,
Each side wire other than the side wire comprising the resin wire comprises a resin coating layer on the surface thereof ,
The wire wire, wherein the resin wire is heat-sealed to the surface of the side wire. The said core wire material is equipped with the resin layer for core wires on the surface, The wire cable of Claim 1 characterized by the above-mentioned. The core wire material is a stranded wire member comprising a plurality of core wire elements,
At least one of the wire cable according to claim 1 or 2, characterized in that it comprises a resin layer for core wires on the outer periphery of the plurality of core wires for wire. 4. The wire cable according to claim 3 , wherein the core wire element resin layer is formed by spirally winding a resin wire around the surface of the core element wire and heat-sealing the resin wire. 5. The wire cable according to claim 3 , wherein the core wire element resin layer is formed by coating a resin on a surface of the core element wire.

Images