JPS6340825Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a cable attached to a vehicle.

For example, in order to prevent a car from spinning during sudden braking, a braking device is equipped with a tension limiting device. In this device, cables are used as sensor leads, etc., but since the cables are attached near the wheels, they must be able to withstand soil and sand well. I don't feel well if I do something like that.

Therefore, the purpose of this invention is to provide a cable that can withstand the above requirements.According to this invention, an insulated conductor is coated with tetrafluoroethylene-ethylene copolymer on the outer periphery of the conductor. A vehicle control cable is comprised of a pair of conductors made of at least two twisted conductors and a polyurethane coating layer covering the outer periphery of the pair of conductors.

According to this configuration, the conductor is preferably a stranded conductor made of 300 or more fine wires twisted together, so sufficient flexibility can be obtained even when used in a moving part, and the outer circumferential insulation of the conductor is made of tetrafluoroethylene. - Since it is made of ethylene copolymer, it has great mechanical strength and will not bend easily even if dirt or sand adheres to the cable. Furthermore, according to this invention, two or more insulated conductors coated with a tetrafluoroethylene-ethylene copolymer with good mechanical properties are twisted together, further increasing the strength and making it able to withstand stress in all directions. Become. Therefore, there is no possibility of wire breakage due to stress on the cable connection base.

Furthermore, according to this invention, since the outermost periphery is a polyurethane coating layer, even if sand or pebbles fly off and hit the cable, the stress is well absorbed and the cable is not damaged. In order to further enhance this stress absorption effect, it is possible to leave a sufficient space between the polyurethane coating layer and the pair of wires without intervening in the inner cavity of the polyurethane coating layer.

Next, this invention will be explained in more detail with reference to the drawings.

FIG. 1 is a cross-sectional view of a cable according to this invention. In the figure, a vehicle control cable 1 according to this invention has an insulated conductor 4 whose outer periphery is coated with a tetrafluoroethylene-ethylene copolymer 3.
It is formed by twisting two pieces together and providing a polyurethane coating layer 5 on the outer periphery. In addition, in the figure, 6 is an intervening part, and it may not be provided depending on the case.

According to the vehicle control cable 1 according to the present invention having such a structure, the conductor of the insulated conductor 4 is similar to the conductor 2, so that sufficient flexibility is imparted, and the sheath insulation is made of tetrafluoroethylene-ethylene. Since it is made of polymer 3, it has excellent mechanical properties, and by forming two or more twisted pair wires, it will not be bent or deformed even if about 200 to 300 g of earth and sand are attached. Furthermore, since the outermost coating layer is made of polyurethane, even if a small stone or the like hits it, it absorbs stress and does not damage the internal insulated conductor.

Therefore, when the cable 1 according to this invention is connected between a sensor 10 provided on a movable support plate 9 of a vehicle 8 and an axle 11 as shown in FIG. The bending radius R of the cable hardly changes even when the cable is bent, there is no damage to the cable connection part, and there is no damage even if a pebble hits the cable 1, so the cable can operate stably for many years. becomes.

As described above, according to this invention, there is a pair conductor made by twisting together at least two insulated conductors whose outer peripheries are insulated with tetrafluoroethylene-ethylene copolymer, and By configuring the vehicle control cable with a polyurethane coating layer, the cable will not be deformed due to adhesion of earth and sand, and will not be damaged even if it is hit by stones, etc., and can be used for many years. Cables can be obtained economically.

Note that this invention is not limited to the above-mentioned embodiments; for example, the cable according to this invention can be used in trains and industrial vehicles, and can be used not only for sensors but also for various applications. Various changes can be made within the scope of the idea.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an embodiment of a vehicle control cable according to this invention, and FIG. 2 is a conceptual diagram showing an example of use of the cable according to this invention. 1: Vehicle control cable, 2: Stranded conductor, 3:
Tetrafluoroethylene-ethylene copolymer insulation coating, 4: insulated conductor, 5: polyurethane coating layer,
6: Intervention.

Claims (1)

[Claims for Utility Model Registration] 1. Tetrafluoroethylene on the outer periphery of the conductor.
A vehicle control cable comprising a pair of conductors made by twisting at least two insulated conductors coated with ethylene copolymer, and a polyurethane coating layer covering the outer periphery of the pair of conductors. 2. The vehicle control cable according to claim 1 of the utility model registration claim, characterized in that the stranded conductor of the insulated conductor is composed of 300 or more thin wires. 3. In the vehicle control cable according to either of claims 1 or 2 of the utility model registration claim, the polyurethane coating layer is formed without any internal intervening material, leaving sufficient space between the pair of wires. A vehicle control cable characterized by: