JPH03182225A - Conductive flexible hose for vacuum cleaner - Google Patents

Abstract

PURPOSE:To improve safety against electric shocks or the like by constituting so that a conductor wire of a reinforcement cable is located inner than a reinforcement core wire in the radial direction of the hose. CONSTITUTION:A conductive, flexible hose 7 comprises an outer wall tube 1, reinforcement threads 2 arranged in the tube 1, and a reinforcement cable 3 arranged inside the outer wall tube 1. The reinforcement cable 3 is formed by coating a reinforcement core wire 4 and a conductor wire 5 with an insulator material 6. While the conductor wire 5 of the reinforcement cable 3 is arranged circumferentially inner than the reinforcement core wire 4, the wire 5 is also arranged near the outer surface of the reinforcement cable 3 so that the wire 5 is easily led out. Therefore, even if the conductive portion of the reinforcement cable 3 is exposed as a result of external wear by use, the reinforcement core wire 4 of higher safety is exposed first as an advance warning against danger, and the use of the conductive flexible hose may be stopped at that point.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a conductive flexible hose for a vacuum cleaner having a reinforcing core wire and a reinforcing wire incorporating a conductive wire.

Conventional technology In general, this type of conductive visible hose for vacuum cleaners has a reinforcing wire inside the tube, and the reinforcing wire has a reinforcing core wire made of hard steel wire and a conductive wire made of copper wire. In particular, conductive wires made of copper wire are thinly coated near the outer periphery of the reinforcing wire, or placed at the same level as the reinforcing core wire, to facilitate connection to the power switch. It was covered.

Problems to be Solved by the Invention In the above-mentioned conventional conductive visible hose for vacuum cleaners, when the outer wall tube of the hose and the reinforcing wire coating are worn out during use, the conductive wire made of copper wire is removed before the hard steel wire that is the reinforcing core wire. Because the line becomes exposed or both are exposed at the same time,
There was a very high risk of electric shock, and there were significant safety issues.

The present invention solves the above-mentioned conventional problems, and aims to provide a conductive flexible hose for a vacuum cleaner that is highly safe and free from electric shock when the hose surface wears out.

Means for Solving the Problems In order to solve the above problems, the conductive flexible hose for vacuum cleaners of the present invention includes a flexible outer wall tube made of synthetic resin, rubber, etc., and an inner wall of the outer wall tube. A flexible hose for a vacuum cleaner, comprising a reinforcing core wire and a conductive wire covered with an insulating material, and a reinforcing wire that maintains the shape of the outer wall tube against external pressure, the hose having a diameter of In this case, the conductive wire of the reinforcing wire is located closer to the inner circumference of the hose than the reinforcing core wire.

Effect With the above structure, even if the outside of the hose is worn out when using a vacuum cleaner, the conductive wire is placed closer to the inner periphery than the reinforcing core wire in the radial direction of the hose, so the reinforcing core wire, which does not cause any risk of electric shock, will be placed first. This will serve as a predictive warning, improving safety in the event of electric shock due to re-exposure of the wire.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a partially cutaway external view of a conductive visible hose for a vacuum cleaner showing an embodiment of the present invention. In FIG. 1, an outer wall tube 1 is made of synthetic resin, rubber, etc., and has flexibility. Reinforcing threads 2 are arranged inside this outer wall tube 1. In addition, a reinforcing wire 3 is installed inside the outer wall tube 1.
is provided. This reinforcing wire 3 is made by covering a reinforcing core wire 4 and a conductive wire 5 with an insulating material 6, and maintains the shape of the outer wall tube 1 against external pressure. Here, the conductive wire 5 of the reinforcing wire 3 is arranged so as to be located closer to the inner circumference of the hose than the reinforcing core wire 4 in the radial direction of the hose. In addition, the conductive wire 5 is placed closer to the outer surface of the reinforcing wire 3 than the reinforcing core wire 4, so that the conductive wire 5 is conductive! [It makes it easy to draw out. In this way, the conductive visible hose 7 is placed at the bottom of the tank.

An embodiment of the present invention will be described in more detail below.

FIG. 2 shows a state in which the isoelectric visible hose 7 for a vacuum cleaner according to the present invention is attached to a vacuum cleaner. In Figure 2,
The vacuum cleaner main body 8 has an electric HA machine and a dust collection chamber (
(both not shown), and its tip suction port 9
A conductive visible hose 7 is connected to. The tip of the flexible hose 7 is connected via an extension tube 10 to an electric rotating brush (not shown) and a small electric fi (not shown) for rotating this rotating brush. A floor suction port 11 is attached. The vacuum cleaner main body and the electric floor suction port 11 can be turned on and off using respective switches (not shown) provided at the proximal portion of the conductive visible hose 7 at the bottom of the tank. Fig. 3 shows an enlarged view of the broken part in Fig. 1. As shown in Fig. 3, the flexible hose 7 includes an upper tube 12 and a lower tube made of flexible materials such as synthetic resin or rubber. 1
It has an outer wall tube 1 composed of 3.

Moreover, between the upper tube 2 and the lower tube 13,
A reinforcing thread 2 is arranged. Furthermore, the lower volume tube 13
A reinforcing wire 3 made of a synthetic resin in which a reinforcing core wire 4 made of a hard steel wire and a conductive wire 5 made of a copper wire are embedded is joined to the inner surface of the reinforcing wire 3 made of a synthetic resin. This electrically conductive visible hose 7 supports the tube 1 on the outside of the hose by the function of a reinforcing core wire 4 made of hard steel wire, maintains its shape against external pressure, and transmits low voltage and weak current to the vacuum cleaner body 8. As a result, the power to the vacuum cleaner itself can be turned on and off using a switch located on the hand. In addition, conductive material [5] made of copper wire is
Voltage 100 V from vacuum cleaner body 8, current 0.2 to 0.3
A is energized and the electric wire 14 installed in the extension tube 10 (Fig. 2)
It is connected to the electric motor of the electric floor suction port 11 via. And, with the power switch installed at the hose end,
As mentioned above, the reinforcing wire 3 is made of a reinforcing core 114 made of a hard steel wire and a conductive wire 5 made of a copper wire. As mentioned above, the reinforcing core 114 has the ability to conduct low voltage and weak current, and the ability to protect the hose from external pressure and maintain its shape. Yes, even if a person accidentally comes into direct contact with it, there is no risk of receiving an electric shock, making it extremely safe.

On the other hand, in the case of the conductive wire 5 made of copper wire,
The voltage is high and there is a risk of electric shock, so electrical safety is extremely important. Therefore, in the conductive visible bow 7, even if the conductive part of the reinforcing wire 3 is exposed due to external wear during use, the reinforcing core wire 4 is very safe.
is exposed, which provides a predictive warning for safety. This has the effect of discontinuing the use of this conductive visible hose before highly dangerous conductive wires are exposed, and has the effect of significantly improving the safety of this type of conductive visible hose. There is. At the same time, on the longitudinal side of the conductive flexible hose where there is no risk of external wear, the conductive wire 5 is covered near the outer periphery of the reinforcing wire 6, so that the conductive wire 5 made of weak copper wire can be easily removed. It is easy to pull out, which significantly improves the ease of assembly with the power switch.

Effects of the Invention As described above, according to the present invention, in the radial direction of a conductive flexible hose in which a reinforcing core wire and a reinforcing wire covered with a conductive wire are provided inside, the conductive wire is positioned on the inner circumference of the reinforcing core wire. As a result, the reinforcing core wire, which is highly safe, is exposed first due to external wear, and at this point a predictive warning is issued to stop using the hose, significantly improving electrical safety against electric shocks, etc. . Also, as before,
If the conductive wire is located close to the outer surface of the reinforcing wire in the longitudinal side direction of the hose, the conductive wire can be easily pulled out without impairing the assembly work.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway external view of a conductive visible hose for a vacuum cleaner showing an embodiment of the present invention, and FIG. 2 is an external perspective view of a vacuum cleaner using the conductive flexible hose of FIG. FIG. 3 is an enlarged view of the broken portion in FIG. 1. DESCRIPTION OF SYMBOLS 1... External wall tube, 3... Reinforcement wire, 4... Reinforcement core wire, 5... Conductive wire, 6... Insulating material, 7... Conductive flexible hose.

Claims (1)

[Claims] 1. It consists of a flexible outer wall tube made of synthetic resin or rubber, and a reinforcing core wire and a conductive wire provided inside the outer wall tube and covered with an insulating material, so that the outer wall tube can resist external pressure. A conductive flexible hose for a vacuum cleaner having a reinforcing wire that maintains its shape, the conductive wire of the reinforcing wire being located closer to the inner circumference of the hose than the reinforcing core wire in the radial direction of the hose. A conductive flexible hose for vacuum cleaners.