JP4022699B2 - Cleaner hose - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cleaner hose used by being attached to a vacuum cleaner. More specifically, the present invention relates to a cleaner hose in which a resin-coated reinforcing wire having a hard steel wire as a core wire is spirally wound inside a tube wall formed of a soft synthetic resin material.
[0002]
[Prior art]
In this type of conventional cleaner hose, the tube wall is formed in a spiral corrugated wave shape, and the reinforcing wire made of metal, in particular, hard steel wire, is bare wire inside the convex corrugated portion of the tube wall. There are those that are encased and those that are bonded to the inner surface side of the convex corrugated portion of the tube wall in a state where this metal wire is coated with a resin, and is generally known.
[0003]
Such a cleaner hose is connected between the suction cylinder E of the vacuum cleaner main body C and the intake cylinder D at the top of the handheld operation cylinder P, as shown in the attached FIG. The provided switch S is turned on and off to guide and feed the air sucked from the intake nozzle head N attached to the tip of the operation cylinder P to the cleaner body C via the operation cylinder P and the cleaner hose H. Use for.
[0004]
[Problems to be solved by the invention]
Thus, as is well known, this type of cleaner hose generally has a gentle bending, pulling, and compressing action in all directions for at least 30 minutes a day, 1 hour or more. It is of a nature that is used while receiving, has a high frequency of use and a long time of use, withstands messy handling during transportation and use, and maintains the same shape as a new product for many years. It is preferable.
[0005]
By the way, this type of conventional resin-coated wire in which a metal wire is coated with a synthetic resin material in order to reinforce and retain a hose is kept on the inner surface side of the soft synthetic resin tube wall 1 with a predetermined interval w. In the cleaner hose H having a structure in which the hose is wound in a spiral shape, as shown in the attached FIG. 10, when a compressive force in the length direction is applied to the hose or bending pressure is applied, The entire tube wall portion between the covered wire 4 and the covered wire 4 is not bent in a fold shape that is uniformly depressed in the tube inner direction, but the tube wall portion x between the two wires 4 and 4 is not fold. It was clarified that the tube wall portion y adjacent to the tube portion distorted and deformed in a state where the tube wall portion y jumped out toward the outer periphery. In particular, the tendency was large in the case where the hollow of the tube wall portion between the covered wire 4 and the covered wire 4 was shallow or thick.
[0006]
Further, this phenomenon will be described in detail. As shown in FIG. 11, the four coated wires 4a to 4d obtained by applying resin coating to the hard steel wires are given a predetermined interval while applying a constant pressure tension to each. Even if it is kept and spirally wound, the first line 4a and the second line 4b form a pair, the third line 4c and the fourth line 4d form a pair, and each pair and pair When the tube wall portion x between the spaces (between 4b and 4c) is folded in a pleat shape, the tube wall portions y and y connecting the respective pairs (between 4a and 4b and between 4c and 4d) are tube. When the phenomenon of popping out in the outer peripheral direction of the body occurs, and the tube wall portions y and y connecting these respective pairs are folded in a pleat shape, the tube wall portion x between the respective sets is in the outer peripheral direction of the tube body. It is difficult to obtain a hose that causes a phenomenon of popping out and the entire tube wall shrinks in a pleated shape. Easily repeated also this strain deformation occurs, the entire wall to mass produce a beautiful hose uniformly reduced deformation have come to confirm that it is difficult.
[0007]
Therefore, in order to solve this problem, that is, a hose using the resin-coated wire 4 spirally, even if a compressive force in the tube axis direction or a force in the bending direction is applied, the tube wall As a result of repeating various experiments in order to obtain a hose that is uniform in its overall posture and maintains a reduced or bent posture and has a beautiful appearance, can be mass-produced, and does not cause distortion deformation even when mass-produced, The hose of the present invention has been developed.
[0008]
[Means for Solving the Problems]
The configuration of the present invention taken in order to achieve the above object will be described using the reference numerals of the drawings corresponding to the embodiments. The hose H according to the present invention is provided inside the soft synthetic resin pipe wall 1 with hard steel. A hose in which a coated wire 4 in which a wire 2 is coated with a synthetic resin material 3 is spirally wound at a predetermined interval w, and the hard steel wire 2 and the synthetic resin coating 3 are relative to each other. It is configured to be bonded so as to be immovable.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
In implementing this hose H, the tube wall 1 may be formed of a synthetic resin tube, or may be formed by spirally winding a synthetic resin tape. The tube wall 1 is not limited to a single layer, and may be formed in a double layer structure of an inner layer 11 and an outer layer 12. When the tube wall 1 is a single layer, the covered wire 4 is connected to the tube wall 1. When the tube wall 1 has two layers, the inner wall and the outer wall, and the tube wall 1 has two inner and outer layers, a reinforcing thread or a reinforcing net may be sandwiched between the layers 11 and 12. it can. The covered wire 4 interposed between the inner and outer layers 11 and 12 may be bonded to the inner and outer layers 11 and 12 using a fusion or an adhesive.
[0010]
【Example】
Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 are views showing a first 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 shows an enlarged sectional shape of a tube wall portion. 3 is an exploded view for explaining the means for manufacturing the hose H, and FIG. 4 is an enlarged view of the covered wire. FIG. 5 shows a state in which a connecting cylinder is connected to both ends of the hose to form a cleaner hose, and FIG. 6 shows a state in which this is attached to the cleaner.
[0011]
As shown in FIGS. 1 and 2, the cleaner hose H shown in the embodiment is an embodiment of a hose comprising a tube wall 1 and a covered wire 4 and using four covered wires 4. The synthetic resin material forming the tube wall 1 is, for example, soft polyvinyl chloride (SPVC), EVA elastomer, polyethylene (PE), other soft synthetic resin materials, or a material obtained by mixing rubber with these materials. . As shown in FIG. 4 in an enlarged manner, the coated wire 4 has a hard steel wire 2 as a core material, an adhesive 5 is applied to the outer peripheral surface thereof, and a synthetic resin material such as PVC, EVA elastomer, PE is applied to the outer periphery thereof. It is coated with a synthetic resin material such as PP or PP, and the hard steel wire 2 and the coating resin 3 are bonded with an adhesive 5 in a state in which relative movement is impossible.
[0012]
Thus, as shown in an exploded view in FIG. 3, the hose shown in this embodiment has four covered wires 4a, 4b, 4c, and 4d arranged as a group G, and each is separated by a predetermined interval w. , And the winding between the last line 4d of the preceding winding line and the first line 4a of the winding line after the wrapping is also spirally wound with a predetermined interval w maintained. A soft resin that is spirally wound while applying an adhesive on the upper surface of each of the coated wires 4... And is formed on the upper surface so as to be wider than the interval of five of these coated wires (interval of four w). The tape 1a is spirally wound so that both side edges overlap each other on the top of the fifth coated wire, and the overlapping surfaces are welded to each other or bonded with an adhesive. 4... Are fused or bonded together, and in FIG. As indicated, to form a hose H by sequentially wound the same tape 1a.
[0013]
In this way, as shown in FIGS. 1 and 2, the tube wall 1 is formed in a single-layered spiral corrugated wave shape, and the four covered wires 4 are bonded to the inner surface side of each convex portion. A hose H having a structure is obtained. In the hose H of FIGS. 1 and 2, the tube wall 1 and the covered wire 4 are shown as fused, but as shown in FIG. Even if the wall 1 and the covered wire 4 are bonded, the hose H having the same structure can be obtained.
[0014]
The hose H formed in this way is cut to a length necessary for a vacuum cleaner, and as shown in FIG. Two or four hard steel wires 2... Are electrically connected to the connectors 6a and 7a, and an electric circuit is formed between the two connectors 6a and 7a.
[0015]
In this way, the cleaner hose H in which the connecting cylinders 6 and 7 are connected to both ends is inserted into the suction cylinder E of the vacuum cleaner main body C, as shown in FIG. By connecting the connecting cylinder 6 on the other end to the intake cylinder D at the upper end of the operation cylinder P and connecting the connector 6a, the intake path and the cleaner body are connected between the cleaner body C and the operation cylinder P. An electric circuit for operation is formed and used. If the four hard steel wires 2 are connected to both connectors 6a and 7a, an electric circuit for rotating the head motor installed inside the intake nozzle head N attached to the tip of the operation cylinder P can be obtained. . In this way, the air sucked from the intake nozzle head N is guided and supplied to the cleaner main body C through the operation cylinder P and the cleaner hose H and used.
[0016]
An example of the dimension value of the cleaner hose H is as follows. The inner diameter of the hose = 45 mmφ, the average thickness of the tube wall 1 = 0.5 mm, the wire diameter of the hard steel wire 2 = 0.9 mmφ, and the wire diameter of the coated wire 4 = 1.5 mmφ, and pitch interval w of the coated wire 4 is 10 mm.
[0017]
The hose H shown in FIG. 7 shows an embodiment in which only the two covered wires 4a and 4b are used, and the covered wires 4a and 4b and the tube wall 1 are as described above. Further, the structure is bonded to each other through an adhesive g.
[0018]
FIG. 8 shows a modification of the covered wire 4. In FIG. 4, the adhesive 5 is applied to the entire outer peripheral surface of the hard steel wire 2. The adhesive 5 is applied to only a part of the outer peripheral surface, and the relative movement with the coating resin 3 is disabled. Further, the coating resin 3 of the coated wire 4 is not preferable in the case where the tube wall 1 is made of PVC resin and the coating resin 3 is made of PP resin. Furthermore, it is possible to improve the fusing property with the tube wall 1 by coating the PVC resin, and to fuse them together.
[0019]
FIG. 9 is a diagram showing another embodiment of the hose. In the hose H of this embodiment, the tube wall 1 has a thin inner layer 11 and an outer layer 12 instead of a single layer, and has an inner / outer two-layer structure. The four covered wires 4... Are sandwiched between 12 layers as in the first embodiment. In addition, when the pipe wall 1 has the inner and outer two layers 11 and 12 as described above, it is possible to implement the structure in which the reinforcing yarn is interposed between the layers.
[0020]
Although the embodiments considered to be representative of the present invention have been described above, the present invention is not necessarily limited only to the structures of these embodiments, and includes the above-described configuration requirements according to the present invention. It can be implemented with appropriate modifications within the scope of achieving the above-mentioned object and having the following effects.
[0021]
【The invention's effect】
As is apparent from the above description, the cleaner hose according to the present invention eliminates the electric wire for energization, uses the hard steel wire for tube wall shape retention as a resin-coated wire, and uses this as a through wire. Targeting a special hose with a structure, the hard steel wire and the coating resin are bonded so as not to move relative to the hard steel wire and the resin coating. Are prevented from moving with each other, the tube wall is not deformed in the longitudinal direction and radial direction in a non-uniform state, and even if compressive force or bending pressure in the tube axis direction is applied. It is possible to obtain a hose that can maintain a uniform and beautiful form on the entire tube wall, and that it is possible to obtain a hose that can be mass-produced and that does not cause deformation deformation even when mass-produced. I was able to get it.
[Brief description of the drawings]
FIG. 1 is a partially cutaway front view showing a hose of a first embodiment.
FIG. 2 is an enlarged cross-sectional view of the pipe wall portion.
FIG. 3 is an exploded explanatory view of the pipe wall portion.
FIG. 4 is an enlarged perspective view of a covered wire.
FIG. 5 is a partially omitted front view showing the connection state of the connecting cylinder.
FIG. 6 is a side view showing a mounting state of the vacuum cleaner.
FIG. 7 is a cross-sectional view of a portion corresponding to FIG. 2 showing a hose according to another embodiment.
FIG. 8 is an enlarged perspective view showing another embodiment of the covered wire.
FIG. 9 is a partially cutaway front view of a portion corresponding to FIG. 1 showing a hose according to another embodiment.
FIG. 10 is an explanatory diagram of a deformation state of a conventional hose.
FIG. 11 is an enlarged end view of a tube wall portion of a prior art hose.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Pipe wall 2 Hard steel wire 3 Coated resin 4 Coated wire 11 Inner layer 12 Outer layer H Hose w Space | interval of wire

Claims (3)

Inside the soft synthetic resin pipe wall (1), the coated wire (4), in which the hard steel wire (2) is covered with the synthetic resin material (3), is spirally wound with a predetermined interval (w). A cleaner hose, wherein the hard steel wire (2) and the synthetic resin coating (3) are bonded so as not to move relative to each other. The cleaner hose according to claim 1, wherein the covered wire (4) is bonded to the inner surface side of the tube wall (1). The cleaner hose according to claim 1, wherein the pipe wall (1) comprises an inner layer (11) and an outer layer (12), and a covered wire (4) is interposed between the two layers (11), (12).

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