JPH07124089A - Conducting flexible hose for vacuum cleaner - Google Patents

Abstract

PURPOSE:To prepare a hose with a lighter weight as a whole which enables the power energization to a motor of an electric floor nozzle by hand operation and reduces the disconnection of leads without cracking of the cover of the leads by allowing the restoration thereof without permanent deformation even being treaded by mistake. CONSTITUTION:A resin material (3) covering a conductor (w) for energization is a blended material in which 100 pts. of a polyvinylchloride resin with the degree of polymerization of at least 1100 is blended with, by weight ratio 7 pts. of a plasticizer and 5-10 pts. of acrylic rubber. The blended material can further be blended with, by weight ratio, 5 pts. or less of polyethylenechloride per 100 pts. of the polyvinylchloride resin. The resin material (3) covering the conductor for energization is a blended material in which 100 pts. of the polyvinylchloride resin with the degree of polymerization of at least 1100 is blended with, by weight ratio, 7 pts. or less of the plasticiser and 5-15 pts. of the chlorinated polyethylene.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaner hose used for an electric vacuum cleaner.

[0002]

2. Description of the Related Art The structure of this type of vacuum cleaner hose is
Reinforcement wire coated with resin or a hard steel wire for supporting the tube wall and maintaining the shape of the tube wall against external pressure, which is formed by spirally corrugated wave shape Conductive wire for energizing to operate and stop the reinforcement floor and the electric power of the electric vacuum cleaner and the motor of the electric floor nozzle (power nozzle) with a small motor built-in, and to perform ON / OFF operations at the hand of the hose. A resin-coated coated lead wire is generally bonded to the inner peripheral surface side or the outer peripheral surface side of the convex corrugated portion of the tube wall.

[0003]

However, in the case of a cleaner hose having a reinforcing wire in which a hard steel wire is coated with resin, the weight of the hard steel wire is heavy and the overall weight of the hose is heavy. Load is applied, the hose is easily deformed once it is trampled, and there is a problem that it is difficult to restore because the hard steel wire is hard. In order to operate the operation of the motor of the electric floor nozzle (power nozzle) with a new function at the hand part of the hose, in addition to the reinforcing wire, a coated lead wire coated with a conductive wire for power supply Therefore, there is a problem that the weight of the hose becomes heavier.

Further, in the conventional hose, as described above, a cracking phenomenon is apt to occur in the coating resin material due to the restoring operation when it is erroneously trampled or the repeated bending action during use.
Therefore, there is a problem that it causes a disconnection of the conductive wire.

Therefore, the present invention has an object to solve the problems of the conventional hose, and is suitable for a hose for an electric vacuum cleaner having a new function as described above, and to a motor for an electric floor nozzle. Although the power supply of the hose can be easily performed by hand operation, by eliminating the use of hard steel wire, the overall weight of the hose is reduced and the hose becomes permanent even if it is accidentally trampled. It is possible to prevent deformation and restore, and by using a special resin material for the coating resin of the conductive wire, this coating resin wire material holds the shape of the pipe wall and plays a role as a reinforcing wire. To provide a hose that does not crack even if it is trampled or repeatedly bent during use and that can sufficiently protect the conductive wire and prevent accidental disconnection of the conductive wire. Than it is.

[0006]

The structure of the present invention for achieving the above object will be described with reference to the reference numerals of the drawings corresponding to the embodiments. The resin material for covering the conductive wire w for use is a hard resin material 3, and the hard resin material 3 is used in an amount of 7 parts by weight or less with respect to 100 parts of a polyvinyl chloride resin having a degree of polymerization of 1100 or more and 5 to 10 parts. It is formed of a mixed material in which acrylic rubber within a part is mixed.

The mixed material may further contain 100 parts by weight of polyvinyl chloride resin and 5 parts by weight or less of chlorinated polyethylene.

Further, as another configuration, the hard resin material 3
In place of the acrylic rubber referred to in the first structure, a mixed material in which 100 parts by weight of polyvinyl chloride resin is mixed with 5 to 15 parts by weight of chlorinated polyethylene. That is, with respect to 100 parts of polyvinyl chloride resin having a degree of polymerization of 1100 or more, a mixed material in which a plasticizer having a weight ratio of 7 parts or less and chlorinated polyethylene of 5 to 15 parts are blended,
The hard resin material 3 is formed.

In practicing the present invention having such a structure, the structure of the coated lead wire is formed on the outer peripheral portion of the coated lead wire coated with a hard resin material along the axial direction or in the form of a mesh to form an aramid (all Aromatic polyamide) fiber fixed structure, aramid fiber arranged in parallel with the conductive wire, or conductive wire meshed with aramid fiber in a structure covered with hard resin material When using such a coated lead wire, it is possible to obtain a hose which is even more crack-free and has less accidental disconnection of the conductive wire.

[0010]

Since the hose H according to the present invention has such a structure, as shown in FIG. 3, one end of the connecting cylinders 4 and 5 formed at both ends of the hose main body portion. Side connecting cylinder 5 is connected and connected to the suction cylinder a of the vacuum cleaner body A, and an electric connector is inserted and connected at the same time, and the connection cylinder 4 on the other end side is connected and connected to the upper end portion b of the operation cylinder P and simultaneously electrically connected. Insert the connector and connect.

In this way, the hose H of the present invention is connected and connected between the vacuum cleaner body A and the operation cylinder P via the connecting cylinder bodies 4 and 5 on both sides, and the hose H and the vacuum cleaner body A and a small size are connected. A series of air passages are formed between the motor and the electric floor nozzle (power nozzle) N, and at the same time, the electric power is conducted between the power source of the electric vacuum cleaner body A and the motor built in the electric floor nozzle N. An energizing circuit is formed by the line w, and the operating cylinder P
By turning on the operation switch provided at the upper end of the motor, the built-in motor is operated and the brush is rotated, and dust is sucked from the suction port of the electric floor nozzle N for cleaning.

When this vacuum cleaner is used, the hose is used while being repeatedly subjected to a tensile force, a compressive force, a bending force and a torsional force. A hard steel wire is used for this hose. Since the hose is lightweight, it is easy to operate because it is light in weight, and it can be used lightly with less feeling of fatigue. Also, even if it is sometimes accidentally trampled, since hard steel wire is not used,
Since the hard resin material, which does not remain plastically deformed, is restored with time by the self-restoring force of the hard resin material that plays a role as a reinforcing wire, it is possible to recover ventilation and avoid unpleasantness.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are views showing a main embodiment of the present invention, FIG. 1 shows an outer shape in which a part of a hose H is broken, and FIG. 2 shows an enlarged cross-sectional shape of a pipe wall portion. FIG. 3 is a view showing the overall shape of the hose with the middle portion interrupted. The hose H comprises a pair of two conducting wires w for energizing, which are six to eight copper wires having a diameter of 0.14 mm to 0.16 mm, and a polyvinyl chloride resin (PVC) having a polymerization degree of 1300 to 1400. ) For 100 parts, a mixed resin material (hereinafter referred to as a "hard resin material") in which a weight ratio of 3 to 5 parts of a plasticizer and 6 to 8 parts of acrylic rubber is mixed is insulation-coated to form two conductive wires w. The coated lead wires 2 embedded in parallel are formed, and two sets of the coated lead wires 2A and 2B thus formed are wound in a double-pitch shape at a predetermined interval on the hose forming shaft.

Polyvinyl chloride resin (PVC) 100 as a flexible synthetic resin material is provided on the outer surface.
A material (hereinafter referred to as “soft PVC”) in which a plasticizer having a weight ratio of 70 to 100 parts with respect to 10 parts is mixed is extruded into a band shape from an extruder, and a hose wall has a double pitch spiral corrugated shape along the axial direction. To form the inner wall 1A,
The inner surface thereof is fused or adhered to the insulating coating layer (hard resin material) 3 of the coated lead wires 2A and 2B, and a large number of reinforcing fiber threads 1C made of natural fibers or synthetic fibers are provided on the outer surface of the hose. While arranging the yarn along the axial direction of the above, the outer wall 1B is formed by spirally winding another soft PVC band material on the outer surface thereof, and is fused or bonded to the inner wall 1A. Then, the tube wall 1 in which the reinforcing fiber thread 1C is interposed between the inner and outer walls 1A and 1B is formed, and the hose H
Is configured.

FIG. 3 is a view showing the shape of a cleaner hose in which the hose H having such a structure is assembled and formed for an electric vacuum cleaner, and the connecting cylinders separately formed at both ends of the main body of the hose H. 4, 5 are integrally attached to each other, and at the same time, the conductive wires w of the two sets of the coated lead wires 2A, 2B are connected to the respective connectors 4a, 5a, and the conductive wire w is connected between these two connectors 4a, 5a. The structure is electrically connected by.

As shown in FIG. 4, the cleaner hose thus constructed is connected to the vacuum cleaner by inserting the connecting cylinder 5 at one end of the hose H into the suction cylinder a of the vacuum cleaner main body A. At the same time, the connector 5a is inserted and connected to the connector in the vacuum cleaner body A, and the connection cylinder body 4 on the other end side is fitted and connected to the intake cylinder b at the upper end of the operation cylinder P, and at the same time, the connector 4a is connected to the operation cylinder. By inserting and connecting to the connector formed on P, the connection is completed as in the case of the conventional general cleaner hose.

By doing so, the hose H of the present invention is connected between the vacuum cleaner body A and the operation tube P, and is connected to the tips of the vacuum cleaner body A and the operation tube P. An air suction passage and an electric circuit are formed simultaneously with the electric floor nozzle (power nozzle) N, and a switch provided on the operation tube P is turned on to turn on the electric floor nozzle N.
While operating a small motor (not shown) provided in the above, the rotary brush is rotated and air is sucked from an intake nozzle like a general vacuum cleaner to clean a cleaning object such as a floor or a carpet.

In the embodiment, the kind of PVC constituting the hard resin material 3 is described as having a polymerization degree of 1300 to 1400, but the PVC may have a polymerization degree of 1100 or more. The plasticizer to be mixed with PVC may be mixed in a weight ratio of 7 parts or less, and the acrylic rubber may be mixed in a range of 5 to 10 parts. In addition to these materials, the mixed material may further contain chlorinated polyethylene in a weight ratio of 5 parts or less relative to 100 parts of PVC.

As another composition of the hard resin material 3, the above-mentioned acrylic rubber is not used, but PVC 1 having a polymerization degree of 1100 or more is used instead of the acrylic rubber.
A mixed material in which chlorinated polyethylene is mixed in a weight ratio of 5 to 15 parts with respect to 00 parts may be used. That is, the degree of polymerization 110
The hard resin material 3 may be made of a mixed material in which a plasticizer having a weight ratio of 7 parts or less and 5 to 15 parts of chlorinated polyethylene are mixed with 100 parts of PVC of 0 or more.

In producing the hose of the present invention, aramid (wholly aromatic polyamide) is formed on the outer peripheral portion of the coated lead wire 2 coated with the hard resin material 3 along its axial direction or in a mesh form. The hard resin material 3 may have a structure in which fibers are fixed and reinforced, and aramid fibers are arranged in parallel with the conductive wires w or conductive wires are covered with aramid fibers in a mesh shape. The structure may be covered with. By using the coated lead wire 2 reinforced with such an aramid fiber, a coated wire with further less cracks can be obtained, and a hose with less disconnection of the conductive wire w can be obtained.

The hose shown in FIG. 5 shows another embodiment. The hose H is a conductive wire w embedded in the coated lead wire 2 arranged on the inner peripheral surface side of the tube wall 1. The set of the modified lead wires 2A has a two-wire structure in which a thick copper wire suitable for power supply or a large number of copper wires are buried as conductive wires w, and another set of covered lead wires 2A is used. Lead wire 2B
A thin copper wire or a small number of copper wires smaller than this conductive wire w '
As a wire material suitable for a signal line having a two-wire structure which is embedded and covered, a hose formed by winding these two sets of covered lead wires 2A and 2B in a double pitch shape as in the above-mentioned embodiment. is there. This coated lead wire 2 is 2
One of the main line structures is a thick conductive wire w for power supply,
The other may be a thin conductive wire w ′ for a signal line.

The hose H shown in FIG.
Is an example of the hose H arranged on the outer peripheral surface side of the pipe wall 1, instead of the one arranged on the inner peripheral surface side of the pipe wall 1 shown in the above respective embodiments. . In the hose H in the embodiment, first, an inner wall 1A is formed, a reinforcing fiber yarn 1C is arranged on the outer surface of the hose H, and an outer wall 1B is formed on the outer surface of the inner wall 1A. Reinforcing fiber yarn 1C
A tube wall 1 having a structure in which the above is sandwiched is formed, and two sets of coated lead wires 2A and 2B are wound on the outer surface of the tube wall 1 in a double pitch form in the same manner as in the above-mentioned embodiment to form an outer wall 1B. It has a structure that is adhered.

Thus, the hose H shown in this embodiment is
The inner wall 1A forming the tube wall 1 is shown as a thin, flat, tubular shape, and the outer wall 1B is shown as an uneven shape consisting of a thin wall portion and a thick wall portion, but the outer wall 1B is also the same as the inner wall 1A. It may have a substantially uniform thickness. Also, FIG.
As shown in FIG. 3, both the inner and outer walls 1A and 1B may be formed in a corrugated shape.

As described above, the hose H according to the present invention may have the coated lead wire 2 provided inside or outside the tube wall 1. Further, the hose H according to the present invention is not limited to the one in which the coated lead wire 2 is provided inside or outside of the tube wall 1 as described above, and as shown in FIG. The inner and outer walls 1A and 1B may be sandwiched between layers. In the hose H shown in FIG. 8, the reinforcing fiber yarn 1C is arranged on the outer peripheral surface of the inner wall 1A,
The structure is such that the coated lead wires 2A and 2B and the outer wall 1B are arranged on the outer peripheral surface side.

In the hose H of the present invention, the hose H has a structure in which the coated lead wire 2 is sandwiched inside the wall of the tube wall 1 as described above and the tube wall of the first embodiment. In the case of the structure in which the coated lead wire 1 is disposed on the inner surface side of 1, the hard resin material 3 of the coated lead wire 2 and the tube wall 1 are not fused or bonded in some cases. You can also do it.

The concavo-convex corrugation of the pipe wall 1 of the hose H according to the present invention is for imparting flexibility, and the convex corrugated cross-sectional shape is not limited to the arcuate shape as shown in the drawing. It can be implemented as a prism, a trapezoid, a triangle or any other shape. Further, the covered lead wire 2 is not limited to the one having the two-wire structure shown in the embodiment, but may have a normal one-wire structure, and the cross-sectional shape of the covered lead wire having the two-wire structure is also implemented. Examples Not limited to those shown in the drawings,
It can be implemented as an arbitrary shape such as a horizontally long elliptical shape or a figure eight shape. Further, when the coated lead wire 2 having such a two-wire structure is used, it may be a hose in which only one set of lead wires is arranged in a single pitch, which is the same as in the case of the first embodiment. In a hose in which two sets are used and arranged in a double pitch, two power circuits can be formed.

Although the examples considered to be typical of the present invention have been described above, the present invention is not necessarily limited to the structures of these examples, and has the above-mentioned constitutional requirements referred to in the present invention, and The present invention can be carried out by appropriately modifying it within a range that achieves the object of the present invention and has the following effects.

[0028]

As is apparent from the above description, the conductive flexible hose of the present invention is a coating resin for coating the reinforcing wire for retaining the pipe wall with the conductive wire without using hard steel wire. Since this coating resin is made of a special hard resin material, when using this hose for an electric vacuum cleaner,
Even if the hose is repeatedly subjected to tensile force, compressive force, bending force, twisting force, etc., the coating resin will not fatigue and will not crack, and the hose may be accidentally trampled. Also, since hard steel wire is not used,
Since the hard resin material does not remain plastically deformed but is restored with time by the self-restoring force of the hard resin material, there is a remarkable effect that it is possible to avoid the unsightly as well as to restore the ventilation.

In addition, as compared with a hose using a hard steel wire and a covered wire insulatively coated with a conductive wire for energizing, such as a hose using a conventional hard steel wire, the above coated lead wire is used. Since it is enough, the overall weight of the hose can be reduced, the hose manufacturing process can be simplified, and it is easy to attach the cylinders to both ends of the hose and electrically connect to the connector, making it suitable for vacuum cleaners. This has the effect of significantly reducing the manufacturing cost of the hose.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing a first embodiment.

FIG. 2 is an enlarged cross-sectional view of the pipe wall portion.

FIG. 3 is a side view of the cleaner hose with some intermediate portions omitted.

FIG. 4 is a side view showing mounting means for the electric vacuum cleaner.

FIG. 5 is an enlarged sectional view of a pipe wall portion showing another embodiment.

FIG. 6 is an enlarged sectional view of a pipe wall portion showing another embodiment.

FIG. 7 is an enlarged sectional view of a pipe wall portion showing another embodiment.

FIG. 8 is an enlarged sectional view of a pipe wall portion showing another embodiment.

[Explanation of symbols]

 (1) Pipe wall (2) Coated lead wire (3) Hard resin material (w) Conductive wire (H) Hose

Claims (3)

[Claims] 1. A spiral corrugated corrugated pipe wall (1) formed of a flexible synthetic resin, and a wall thickness of the pipe wall (1) adhered to the inside or outside of the pipe wall (1). A hose provided with a coated lead wire (2) in which a conductive wire (w) for energization is covered with a hard resin material (3), wherein the hard resin material (3) has a degree of polymerization. To 100 parts of polyvinyl chloride resin of 1100 or more, 5 parts by weight or less of a plasticizer and 5 parts of
A conductive flexible hose for a vacuum cleaner, which is made of a mixed material containing 10 to 10 parts of acrylic rubber. 2. The hard resin material (3) is formed of a mixed material in which 100 parts by weight of polyvinyl chloride resin and 5 parts by weight or less of chlorinated polyethylene are mixed with the mixed material. A conductive flexible hose for an electric vacuum cleaner as described above. 3. A spiral corrugated corrugated pipe wall (1) formed of a synthetic resin having flexibility and a wall thickness of the pipe wall (1) adhered to the inside or the outside of the pipe wall (1). A hose provided with a coated lead wire (2) in which a conductive wire (w) for energization is covered with a hard resin material (3), wherein the hard resin material (3) has a degree of polymerization. To 100 parts of polyvinyl chloride resin of 1100 or more, 5 parts by weight or less of a plasticizer and 5 parts of
A conductive flexible hose for a vacuum cleaner, which is made of a mixed material containing -15 parts of chlorinated polyethylene.