7 Errors In Shield Control Cable That Make You Look Dumb > 자유게시판

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The control cable of the current invention includes a conduit having flexibility, inside floor of which being fitted with a liner, and an interior cable having an inside coat, which is inserted into the conduit in order that the inner cable free slides within the conduit. For instance, in case the shortage of lubricants is generated as a result of long period use of the management cable, there are some problems that the liner is totally worn down and the operationability of the control cable is excessively lowered, and the like. In the present invention, for the reason that organopolysiloxane having an extremely-excessive viscosity and the organopolysiloxane having a lower viscosity are dispersively contained in the thermoplastic resin used within the above-mentioned liner, it's of course that there isn't a necessity to use a lubricant between the interspace of the conduit and the interior cable, and an excellent operate that the sliding operation of the conduit and the inside cable might be smoothly carried out for a protracted time frame, is exhibited. When the kinematic viscosity exceeds 10000 cSt, the organopolysiloxane doesn't bleed out from the thermoplastic resin sufficiently, and the load effectivity is lowered. When the kinematic viscosity is lower than 25 cSt, the organopolysiloxane having a lower viscosity is evaporated in a short while, and the wear and tear of the liner are generated throughout the control cable is used.

The object of the current invention is to delete the above-mentioned disadvantages of standard management cables and to offer a management cable which does not necessitate a lubricant to avoid a fancy coating operation and which can be used with easy sliding operation of the inner cable for a long time frame. FIG. 1 is a partially-cut-off perspective view exhibiting one embodiment of the control cable of the current invention. When the content of the organopolysiloxane is lower than 13% by weight, shield control cable the load efficiency is lowered when the control cable is used for a long period of time. The representative examples of the organopolysiloxane having a decrease viscosity are, as an illustration, dimethylpolysiloxane, methylalkylpolysiloxane, methylphenylpolysiloxane, methylaminoalkylpolysiloxane, methylfluoroalkylpolysiloxane, and the like. The everyday examples are, for example, dimethylpolysiloxane, methylalkylpolysiloxane, methylphenylpolysiloxane, methylaminoalkylpolysiloxane, methylfluoroalkylpolysiloxane, and the like. Representative examples of the sort II are, for example, Teflon (Registered Trademark) PFA 340-J commercially accessible from DUPONT-MITSUI FLUORO CHEMICALS CO., LTD., and the like.

The control cable has been conventionally used with a view to operate a transmission utilized in automobiles, autobicycles, bicycles and the like, a brake, a clutch, a speedmeter, and the like. FIG. 2 is an illustrative view of an apparatus for measuring the properties of the control cable of the current invention. When the melt index of the polybutylene terephthalate is lower than 0.1 g/10 minutes, it is tough to produce a liner by means of an extruder, and when the melt index exceeds 5 g/10 minutes, there is a tendency that the liner is well peeled off from the conduit as a result of lack of toughness of the liner throughout forming the liner and that bodily properties comparable to sturdiness and abrasion resistance required for the liner usually are not easily exhibited. However, there are a number of problems, within the management cable by which a lubricant is used, comparable to problem of operation for coating as a result of dispersion of the load efficiency of merchandise is attributable to the unevenness of a coating, rubbishes and dusts are easily adhered to the lubricant when making use of the lubricant to the control cable, and drip and the like are generated.

However, when a organopolysiloxane having too low a viscosity is contained in a large quantity within the resin, there is a problem that the organopolysiloxane can't be effectively extruded to provide a liner, and thus the molding can't be carried out due to the slipping of the resin on the cylinder barrel in the extruder. When the content material is more that 20% by weight, an extruded product cannot be produced because a slip of a resin occurs on a cylinder barrel in an extruder and the constant feed of the resin can't be carried out. When the content material of the organopolysiloxane having an ultra-high viscosity is less that 45% by weight and the content material of the organopolysiloxane having a decrease viscosity is extra that 55% by weight, an extruded product can't be produced as a result of a slide between a screw and a resin happens in an extruder and the feed of the resin can't be carried out. Out of the total number of rods, 40 ones are used for energy distribution management by means of the hight of the energetic zone of the reactor. However, when the viscosity of the organopolysiloxane is too high, the quantity of the organopolysiloxane which is extided from the surface of the resin is little, and in accordance the load efficiency and sturdiness of the control cable can't be improved sufficiently.