JP3682659B2 - Conductive flexible hose for vacuum cleaner - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a cleaner hose used for a vacuum cleaner.
[0002]
[Prior art]
This type of vacuum cleaner hose has a structure in which a pipe wall is formed in a spiral corrugated wave shape, and a hard steel wire is used to support the pipe wall and maintain the shape of the pipe wall against external pressure. Resin-coated reinforcement wire, or this resin-coated reinforcement wire and the power control of the vacuum cleaner and the motor of the electric floor nozzle (power nozzle) with a built-in small motor can be turned on / off, or turned on / off. Generally, it has a structure in which a coated lead wire coated with resin for conducting current at the hand is bonded to the inner peripheral surface side of the convex corrugated portion of the tube wall or to the outer peripheral surface side It is.
[0003]
[Problems to be solved by the invention]
However, in the case of a cleaner hose having a reinforcing wire in which a hard steel wire is coated with a resin, the weight of the hard steel wire is heavy, so that the entire weight of the hose becomes heavy, and an excessive load is accidentally applied. It is easily deformed when it is crushed, and has a problem that it is difficult to restore because the hard steel wire is hard, and as mentioned above, an electric floor nozzle with a new function incorporating a small motor ( In order to operate and stop the motor of the (power nozzle) at the hand of the hose, a coated lead wire that is coated with a conductive wire for energization of the power is required in addition to the above-mentioned reinforcing wire. Had the problem of becoming even heavier.
[0004]
Furthermore, the conventional hose is likely to cause a cracking phenomenon in the coated resin material due to the restoration operation when it is accidentally crushed as described above and the repeated bending action at the time of use. It had a problem of becoming.
[0005]
Therefore, the present invention aims to solve the problems of such a conventional hose, and is suitable for a hose for an electric vacuum cleaner having the above-mentioned new function, and energizing a motor of an electric floor nozzle. Can be easily performed by hand operation, but by eliminating the use of hard steel wire rods, the overall weight of the hose is reduced, preventing permanent deformation of the hose when accidentally crushed In addition, by using a special resin material for the conductive wire coating resin, the coated resin wire retains the shape of the tube wall, serves as a reinforcing wire, and is crushed. It is an object of the present invention to provide a hose that does not cause cracking due to repeated bending during use, can sufficiently protect the conductive wire, and can avoid a disconnection accident of the conductive wire.
[0006]
[Means for Solving the Problems]
The configuration of the present invention for achieving the object will be described using the reference numerals of the drawings corresponding to the embodiments. The first configuration of the hose H referred to in the present invention is a resin that covers the conductive wire w for energization. The material is a hard resin material 3, and the hard resin material 3 is blended with a plasticizer having a weight ratio of 7 parts or less and an acrylic rubber within 5 to 10 parts with respect to 100 parts of a polyvinyl chloride resin having a polymerization degree of 1100 or more. The coated lead wire 2 functions as a reinforcing wire, maintains the shape of the tube wall, and self-restores even when it is crushed .
[0007]
The mixed material may further contain chlorinated polyethylene having a weight ratio of 5 parts or less per 100 parts of the polyvinyl chloride resin.
[0008]
Further, as another configuration, the hard resin material 3 is mixed with 5 parts by weight of chlorinated polyethylene in a weight ratio of 5 to 15 parts per 100 parts of polyvinyl chloride resin instead of the acrylic rubber referred to in the first structure. It is made of material. That is, the hard resin material 3 is formed by 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 blended with 100 parts of a polyvinyl chloride resin having a polymerization degree of 1100 or more. Ah is, the coated lead wire 2 functions as a reinforcing wire, holds the wall shape, Ru configuration entirety in the self-restoring be collapsed stepping.
[0009]
In carrying out the present invention having such a configuration, the structure of the coated lead wire is aramid (fully aromatic polyamide) in the axial direction or in the form of a mesh on the outer periphery of the coated lead wire coated with a hard resin material. ) As a structure with a structure in which fibers are fixed, a structure in which aramid fibers are arranged in parallel with conductive wires, or a structure in which conductive wires are covered with aramid fibers in a mesh shape, covered with a hard resin material When such a coated lead wire is used, a hose that is further free of cracks and that has less electrical wire disconnection accidents can be obtained.
[0010]
[Action]
Since the hose H according to the present invention has such a structure, as shown in FIG. 3, the connection cylinders 4 and 5 formed at both ends of the hose body portion are connected at one end side. The cylinder 5 is connected and connected to the suction cylinder a of the main body A of the vacuum cleaner, and the electric connector is simultaneously inserted and connected. The connection cylinder 4 on the other end side is connected and connected to the upper end b of the operation cylinder P, and the electric connector is simultaneously inserted. Connect.
[0011]
In this way, the hose H of the present invention is connected and connected between the vacuum cleaner main body A and the operation cylinder P via the connecting cylinders 4 and 5 on both sides, and the vacuum cleaner main body A and the small motor are incorporated. A series of air passages are formed between the electric floor nozzle (power nozzle) N and the electric wire w between the power source of the vacuum cleaner body A and the motor built in the electric floor nozzle N. The energization circuit is formed, and the operation switch provided at the upper end of the operation cylinder P is turned on to operate the built-in motor to rotate the brush and suck the dust from the suction port of the electric floor nozzle N for cleaning. To do.
[0012]
When using this vacuum cleaner, the hose is used while being repeatedly subjected to tensile force, compressive force, bending force and torsional force, but this hose does not use hard steel wire. Since the entire hose is lightweight, it is easy to operate and can be used lightly with little fatigue. Also, even if it is sometimes accidentally crushed, the hard steel wire is not used, so it does not remain plastically deformed, and the self-restoring force of the hard resin material that serves as a reinforcing wire Therefore, it is possible to avoid unsightlyness along with the recovery of ventilation.
[0013]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
1 to 3 are diagrams showing a main embodiment of the present invention, in which FIG. 1 shows an outer shape in which a part of a hose H is broken, and FIG. 2 is an enlarged cross-sectional shape of a tube wall portion. FIG. 3 is a view showing the shape of the entire hose with the intermediate portion interrupted. The hose H is a polyvinyl chloride resin (PVC) having a polymerization degree of 1300 to 1400 with two pairs of conductive wires w for energizing 6 to 8 copper wires having a wire diameter of 0.14 mm to 0.16 mm. ) A mixed resin material (hereinafter referred to as “hard resin material”) in which a plasticizer of 3 to 5 parts by weight and 6 to 8 parts of acrylic rubber are blended with respect to 100 parts. The covered lead wires 2 embedded in parallel are formed, and two sets of the covered lead wires 2A and 2B thus formed are wound in a double pitch shape at a predetermined interval on the hose forming shaft.
[0014]
On this outer surface, a material (hereinafter referred to as “soft PVC”) in which a plasticizer having a weight ratio of 70 to 100 parts is mixed with 100 parts of polyvinyl chloride resin (PVC) as a flexible synthetic resin material. The inner wall 1A is formed by extruding into a strip shape from an extruder and wound so that the hose wall has a double-pitch spiral concavo-convex wave shape along the axial direction, and the inner surface thereof is an insulating coating layer of the coated lead wires 2A and 2B. (Hard resin material) 3 is fused or bonded to the outer surface of the reinforcing resin yarn 1C, and a plurality of reinforcing fiber yarns 1C formed of natural fibers or synthetic fibers are attached along the axial direction of the hose, On the outer surface, another soft PVC strip is spirally wound to form the outer wall 1B, which is fused or bonded to the inner wall 1A, and the reinforcing fiber yarn is interposed between the inner and outer walls 1A and 1B. Tube wall 1 with 1C interposed Form, the one in which you configure the hose H.
[0015]
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 a vacuum cleaner, and the connecting cylinders 4 and 5 separately formed at both ends of the main body portion of the hose H. Are attached integrally, and at the same time, the conductive wires w of the two sets of covered leads 2A, 2B are connected to the respective connectors 4a, 5a, and the electric wires w ... are electrically connected between the connectors 4a, 5a. It is the structure connected to.
[0016]
As shown in FIG. 4, in order to connect the cleaner hose thus configured to the vacuum cleaner, the connecting cylinder 5 on one end side of the hose H is inserted and connected to the suction cylinder a of the vacuum cleaner main body A, The connector 5a is inserted and connected to the connector in the vacuum cleaner main body A, and the connecting cylinder 4 on the other end side is fitted and connected to the intake cylinder b at the upper end of the operating cylinder P. At the same time, the connector 4a is formed on the operating cylinder P. The connection is completed by inserting and connecting the connector to the connector, as in the case of a conventional general cleaner hose.
[0017]
By doing in this way, the electric floor nozzle which connected the hose H of this invention between the vacuum cleaner main body A and the operation cylinder P, and is connected to the front-end | tip of the vacuum cleaner main body A and the operation cylinder P A small motor (not shown) provided in the electric floor nozzle N by simultaneously forming an air suction passage and an electric circuit with the (power nozzle) N and turning on a switch provided in the operation cylinder P While rotating the rotating brush by operating the, the air to be sucked from the suction nozzle is cleaned like a general vacuum cleaner to clean the object to be cleaned such as a floor or a carpet.
[0018]
In this embodiment, the type of PVC constituting the hard resin material 3 has been described as having a degree of polymerization of 1300 to 1400. However, this PVC may be one having a degree of polymerization of 1100 or more. The plasticizer to be mixed with PVC may be mixed within a weight ratio of 7 parts or less, and the acrylic rubber may be mixed within a range of 5 to 10 parts. In addition to these materials, the mixed material may further contain 5 parts by weight or less of chlorinated polyethylene with respect to 100 parts of PVC.
[0019]
As another compounding constitution constituting this hard resin material 3, the above acrylic rubber is not used, and instead of this acrylic rubber, a chlorine ratio of 5 to 15 parts by weight with respect to 100 parts of PVC having a polymerization degree of 1100 or more. It is good also as a mixed material which mix | blended chlorinated polyethylene. That is, the hard resin material 3 may be composed 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 blended with 100 parts of PVC having a polymerization degree of 1100 or more.
[0020]
In manufacturing the hose of the present invention, an aramid (fully aromatic polyamide) fiber is fixed to the outer periphery of the coated lead wire 2 coated with the hard resin material 3 along the axial direction or in a mesh shape. A structure in which an aramid fiber is arranged in parallel with the conductive wire w or a structure in which the conductive wire is covered with aramid fiber in a mesh shape is covered with the hard resin material 3. It is good also as a thing. The use of such coated lead wire 2 reinforced with aramid fibers, more cracks no coated wire is obtained, and it is possible to obtain a small hose of accidental disconnection of the conductive wires w.
[0021]
The hose shown in FIG. 5 shows another embodiment, and the hose H is a type of the conductive wire w embedded in the covered lead wire 2 disposed on the inner peripheral surface side of the tube wall 1. It is a modified two-wire structure in which one set of covered lead wires 2A is embedded with a thick copper wire suitable for power conduction or a large number of copper wires as conductive wires w, and another set of covered lead wires 2B. Is a wire suitable for a signal wire having a two-wire structure in which a thinner copper wire or a small number of copper wires are embedded as conductive wires w ′, and using these two sets of covered lead wires 2A and 2B, These are hoses formed by winding them in a double-pitch shape as in the previous embodiment. The covered lead wire 2 may have one of the two-wire structures as a thick conductive wire w for power conduction and the other as a thin conductive wire w ′ for signal lines.
[0022]
The hose H shown in FIG. 6 has the coated lead wire 2 disposed on the outer peripheral surface side of the tube wall 1 instead of the one disposed on the inner peripheral surface side of the tube wall 1 shown in the above embodiments. An example of the hose H is shown. In the hose H in the embodiment, first, the inner wall 1A is formed, the reinforcing fiber yarn 1C is disposed on the outer surface thereof, and the outer wall 1B is formed on the outer surface thereof, and the space between the inner wall 1A and the outer wall 1B is formed. A tube wall 1 having a structure in which a reinforcing fiber yarn 1C is sandwiched between the two 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 shape in the same manner as in the above embodiment. This is a structure that is rotated and bonded to the outer wall 1B.
[0023]
Thus, in the hose H shown in this embodiment, the inner wall 1A constituting the tube wall 1 has a thin flat cylindrical shape, and the outer wall 1B has an uneven shape composed of a thin portion and a thick portion. Although shown as a thing, the outer wall 1B may be of substantially the same thickness as the inner wall 1A. Moreover, as shown in FIG. 7, the inner and outer walls 1A and 1B may be formed in an uneven wave shape.
[0024]
Thus, the hose H referred to in the present invention may be one in which the coated lead wire 2 is provided either inside or outside the tube wall 1. In addition, the hose H referred to in the present invention is not limited to the case where the covered lead wire 2 is provided on either the 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 the inner and outer walls 1A and 1B. The hose H shown in FIG. 8 has a structure in which reinforcing fiber yarns 1C are disposed on the outer peripheral surface of the inner wall 1A, and the coated lead wires 2A and 2B and the outer wall 1B are disposed on the outer peripheral surface side. .
[0025]
The hose H of the present invention has a structure in which the coated lead wire 2 is sandwiched inside the wall thickness of the tube wall 1 as described above, or the inner surface of the tube wall 1 as in the first embodiment. In the case of a structure in which the coated lead wire 1 is disposed on the side, the hard resin material 3 of the coated lead wire 2 and the tube wall 1 may not be fused or bonded depending on the case. it can.
[0026]
The corrugated corrugation of the tube wall 1 of the hose H according to the present invention is for providing flexibility, and the sectional shape of the convex corrugation is not limited to an arc shape as shown in the figure, but is a square or trapezoidal shape. , Triangles 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, and may have a normal one-wire structure, and the cross-sectional shape of the two-wire structure covered lead wire is also implemented. The present invention is not limited to the example shown in the drawings, and can be implemented as an arbitrary shape such as a horizontally long ellipse or an eight figure. Further, in the case of using the coated lead wire 2 having such a two-wire structure, a hose in which only one set of lead wires is arranged in a single pitch may be used, as in the case of the first embodiment. In the case of a hose arranged in a double pitch using two sets, two power circuits can be formed.
[0027]
Although the embodiments considered to be representative of the present invention have been described above, the present invention is not necessarily limited to the structures of these embodiments, and includes the above-described constituent features according to the present invention. It can be carried out with appropriate modifications within the scope of achieving the purpose and having the following effects.
[0028]
【The invention's effect】
As is clear from the above description, in the conductive flexible hose of the present invention, the reinforcing wire that retains the shape of the tube wall is formed by a coating resin that covers the conductive wire without using a hard steel wire. Since this coating resin is made of a special hard resin material, when this hose is used for a vacuum cleaner, the hose has a pulling force, compressing force, bending force, twisting force, etc. Even if it is repeatedly applied, the coating resin will not be fatigued and cracked, and even if the hose is accidentally crushed, no hard steel wire is used, so plastic deformation Since it is restored over time by the self-restoring force of the hard resin material, there is a remarkable effect that it is possible to avoid unsightlyness along with the recovery of the air permeability.
[0029]
In addition, compared with a hose using a hard steel wire and a covered wire in which a conductive wire for energization is insulated like a hose using a conventional hard steel wire, only the above-mentioned covered lead wire is sufficient. Therefore, the overall weight of the hose can be reduced, the manufacturing process of the hose can be simplified, the cylindrical body at both ends of the hose and the electrical connection to the connector can be easily made, and the manufacture of the hose for the vacuum cleaner There is an effect that the cost can be significantly reduced.
[0030]
Furthermore, as in claims 4 and 5, the structure of the coated lead wire is an aramid (fully aromatic polyamide) fiber along the axial direction or in the form of a mesh on the outer periphery of the coated lead wire coated with a hard resin material. There is a structure in which an aramid fiber is arranged parallel to the conductive wire, or a structure in which the conductive wire is covered with aramid fiber in a mesh shape and covered with a hard resin material. Therefore, it is possible to expect an effect that it is possible to obtain a hose that is further free of cracks and has few electrical wire breakage accidents.
[Brief description of the 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 partially omitted.
FIG. 4 is a side view showing a mounting means to the vacuum cleaner.
FIG. 5 is an enlarged cross-sectional view of a tube wall portion showing another embodiment.
FIG. 6 is an enlarged cross-sectional view of a tube wall portion showing another embodiment.
FIG. 7 is an enlarged cross-sectional view of a tube wall portion showing another embodiment.
FIG. 8 is an enlarged cross-sectional view of a tube 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 (5)

A spiral concave-convex wave-shaped tube wall (1) formed of a flexible synthetic resin and bonded to the inside or outside of the tube wall (1) or sandwiched in the wall thickness of the tube wall (1) , A hose comprising a lead wire (2) coated with a conductive resin (w) for energization with a hard resin material (3), wherein the hard resin material (3) is a polychlorinated polymer having a degree of polymerization of 1100 or more. per 100 parts of vinyl resin, Ri formed tare a mixed material obtained by mixing an acrylic rubber and 5 to 10 parts or less of a plasticizer weight ratio of 7 parts, the covering lead wire (2) functions as a reinforcing wire, holding the wall shape, stepping collapsed configuration entirety in some vacuum cleaners conductive flexible hose self-restoring even. The vacuum cleaner according to claim 1, wherein the hard resin material (3) is formed of a mixed material obtained by further blending chlorinated polyethylene having a weight ratio of 5 parts or less with respect to 100 parts of the polyvinyl chloride resin. Conductive flexible hose. A spiral concave-convex wave-shaped tube wall (1) formed of a flexible synthetic resin and bonded to the inside or outside of the tube wall (1) or sandwiched in the wall thickness of the tube wall (1) , A hose comprising a lead wire (2) coated with a conductive resin (w) for energization with a hard resin material (3), wherein the hard resin material (3) is a polychlorinated polymer having a degree of polymerization of 1100 or more. per 100 parts of vinyl resin, Ri tare formed a mixed material obtained by mixing a chlorinated polyethylene and 5 to 15 parts or less of a plasticizer weight ratio of 7 parts, the covering lead wire (2) functions as a reinforcing wire , holds the wall shape, stepping collapsed configuration entirety in some vacuum cleaners conductive flexible hose self-restoring even. The structure of the coating leads to the outer peripheral portion of the covering leads coated with a hard resin material such as rigid vinyl chloride resin, was in the in the axial direction or mesh is secured aramid (wholly aromatic polyamide) textiles The conductive flexible hose for a vacuum cleaner according to any one of claims 1 to 3, wherein the flexible hose is a structure. The structure of the coated lead wire is a structure in which aramid fibers are arranged in parallel with the conductive wires, or the conductive wires are covered in a mesh shape with aramid fibers, and are coated with a hard resin material. The electrically conductive flexible hose for a vacuum cleaner according to any one of claims 1 to 3, wherein 2) functions as a reinforcing wire, maintains the shape of the tube wall, and is self-recovered even when crushed.

Images