JPH09178056A - Flexible hose with metal reinforcement wire - Google Patents

Abstract

(57) [Abstract] [Problem] When a hard steel wire as a reinforcing wire is plated with electrolytic copper to facilitate soldering, a brittle phenomenon occurs due to hydrogen absorbed in the hard steel wire during electroplating. Resolve the problem of repeated bending and use of the hose, which leads to a line breakage phenomenon due to brittle fracture.Without such a line breaking phenomenon, it can withstand repeated bending and use for many years and is easy to solder. Providing a flexible hose with a metal reinforcing wire. Kind Code: A1 A flexible hose H made of synthetic resin in which a metal reinforcing wire is spirally wound around a pipe wall 1, and the reinforcing wire is made of a metal excellent in adhesiveness to solder. The hardened steel wire 21 is immersed in the melt, and the metal plated hard steel wire 2 has a metal plating layer 22 formed on the outer peripheral surface thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible hose in which a metal reinforcing wire is spirally wound around a pipe wall made of a synthetic resin material, such as a vacuum cleaner. The present invention relates to a flexible hose suitable for a cleaner hose used.

[0002]

2. Description of the Related Art A flexible hose in which a metal reinforcing wire is spirally wound around a pipe wall made of a synthetic resin of this kind, for example, a conventional cleaner hose used in an electric vacuum cleaner is A metal reinforcing wire, generally a steel wire in the state of a bare wire or a resin-coated wire coated with a resin, is generally adhered to or wrapped in the tube wall.

By the way, in a cleaner hose for an electric vacuum cleaner, the metal reinforcing wire has been used for a long time as a signal wire for turning on / off the power source of the electric vacuum cleaner main body. As the electric wire for driving the power motor M attached to the tip of the operation tube P in the electric vacuum cleaner, a general electric hose structure is provided with a power electric wire on the hose in addition to the reinforcing wire.

However, such a hose has a problem that the weight of the hose becomes heavy and is not suitable for reducing the weight of the hose. Therefore, as the newest technique for solving this problem, a hard steel wire is used for electric copper. It has been invented and proposed by a person concerned with the present invention to use an electrolytic copper-plated hard steel wire having a copper plating layer formed on its outer peripheral surface by plating, and using this as a power line (for example, a special feature). See Kaihei 7-59693).

[0005]

Therefore, the present applicant has
We have commercialized and implemented a hose that uses this newly proposed electrolytic copper-plated hard steel wire, but it has become clear that this electrolytic copper-plated hard steel wire has new problems. It was That is, it has been confirmed that in the hose using the electrolytic copper-plated hard steel wire, the phenomenon of wire breakage is more likely to occur than in the case of the hard steel wire not subjected to electrolytic copper plating. Therefore, as a result of various studies and experiments, the present inventor has found that the cause is a brittleness phenomenon due to hydrogen absorbed in the hard steel wire during electroplating, and this brittle fracture is repeated in the hose. It has been clarified that the bending phenomenon of the wire leads to a line breaking phenomenon.

Therefore, the present invention is intended to solve the problems of the electrolytic copper-plated hard steel wire, and such wire breakage phenomenon occurs while taking advantage of the advantages of the electrolytic copper-plated hard steel wire. Therefore, it is an object of the present invention to provide a flexible hose having a reinforcing wire that can withstand repeated bending use for many years.

[0007]

The structure of the present invention for achieving the above object will be described with reference to the reference numerals in the drawings corresponding to the embodiments. A flexible hose H made of synthetic resin, in which a reinforcing wire made of metal is spirally wound around the pipe wall 1, and the reinforcing wire is made into a metal melt having excellent adhesiveness to solder. The hard steel wire 21 is dipped and a metal plating layer 22 is formed on the outer peripheral surface of the hard steel wire 21.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In carrying out a flexible hose with a metal reinforcing wire having such a structure, a hard steel wire having a wire diameter of about 0.7 mm to 2 mmφ is used as the reinforcing wire. For example, zinc (Zn, melting point 419.47 ° C)
By immersing or passing a metal such as tin (Sn, melting point 231.84 ° C.) or lead (Pb, melting point 327.4 ° C.) having a good adhesive property with solder into a molten liquid by heating, and pulling it up, A metal-plated hard steel wire 2 is used in which a coating layer 22 having a thickness of about 5 to 15 μ is adhered and formed on the outer peripheral surface of the hard steel wire 21.

For example, as the reinforcing wire for the cleaner hose, a wire material having a 7 μm thick zinc layer formed on the outer peripheral surface thereof by passing a hard steel wire with a wire diameter of 0.9 mmφ through a molten zinc solution To use. A structure in which such a wire rod is adhered to the inner surface of the pipe wall as a resin-coated wire according to the conventionally known means for producing a cleaner hose, the state of this resin-coated wire or bare wire not resin-coated The structure will be implemented as a structure in which the inner and outer double layers of the pipe wall are installed between layers.

The synthetic resin material forming the pipe wall 1 may be a polyolefin resin such as polyvinyl chloride (PVC) or polyethylene resin and other resins that are highly flexible and can withstand long-term use. Good. Also,
The tube wall 1 may be formed by spirally winding a band-shaped material and fusing or adhering its side edges together, or may be extruded in a tube shape. The hard steel wire referred to in the present invention is
Hard steel wire such as steel wire, piano wire, stainless steel wire, etc.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are views showing a first embodiment of the present invention relating to a cleaner hose, FIG. 1 shows an outer shape in which a part of a hose H is broken, and FIG. 2 is a cross section of a pipe wall part. The shape is shown, and FIG. 3 is an enlarged view of the reinforcing wire. As shown in FIG. 3, the hose H of the example has a thickness on its outer peripheral surface obtained by passing a hard steel wire 21 having a wire diameter of 0.9 mmφ through a melt obtained by heating and melting zinc (Zn). A wire rod (metal-coated wire rod) 2 on which a 7 μm zinc layer 22 is formed is used, and the wire rod 2 is a resin-coated wire that is insulation-coated with a thickness of 0.5 mm by using a soft PVC material. The two pieces 2A and 2B are wound and arranged on the hose forming die in a double pitch form at a predetermined interval, and the same flexible PVC as the coating resin is provided on the outer peripheral surface thereof.
A flat strip material made of resin is spirally wound and its side edge portions are adhered or fused to each other to form a tube wall 1 having a spiral corrugated shape, and at the same time, a convex corrugated portion 11 of the tube wall 1 is formed.
On the inner surface side of the coating layer 3 and the tube wall 1 of the resin coated wire.
It has a structure in which and are adhered or fused.

Thus, as shown in FIGS. 4 and 5, in order to use this hose H as a cleaner hose CH, this hose H is cut into a predetermined length, and both ends thereof are cut as shown in FIG. Separately formed connection cylinders 4 and 5 are attached to the respective portions, and at the same time, the two wire rods 2A and 2B are soldered to the respective connector portions 4a and 5a using the zinc coating layer 22, and the respective terminals 4b, 5b electrically connected.

As shown in FIG. 5, the cleaner hose CH thus constructed is connected to the electric vacuum cleaner C at one end of the hose CH as in the case of the conventionally known cleaner hose. At the same time when the tubular body 5 is inserted and connected to the suction cylinder a of the electric vacuum cleaner body C, the connector 5a is inserted and connected to the connector of the electric vacuum cleaner body C, and the connection tubular body 4 on the other end side is attached to the upper end of the operation tube P. At the same time as fitting and connecting to the intake cylinder b, the connector 4a is connected to the operation cylinder P.
It can be connected by inserting it into the connector formed on.

By doing so, the hose H of the present invention is connected between the electric vacuum cleaner body C and the operation tube P to simultaneously form the air suction path and the electric conductive path,
When a switch S provided on the operation tube P is turned on, a motor M installed inside the intake nozzle head N at the tip of the operation tube P is operated to rotate the rotary brush, while operating a general vacuum cleaner. Similarly, the object to be cleaned such as a floor or a carpet is cleaned by sucking air from the intake nozzle.

In the embodiment shown in FIG. 6, the tube wall 1 of the hose H is
2 shows an embodiment in which the outer wall 13 and the inner wall 14 are double layers of inner and outer layers, in which the outer wall 13 of the convex corrugated portion 11 of the spiral corrugated corrugated portion of the pipe wall 1 is thicker than the other portions. Formed so as to be meat, and sandwiching two bare metal-coated wires 2A, 2B without resin insulation coating in a double pitch form between the inner and outer double layers 13, 14 It has a certain structure. In this case, needless to say, as shown in the above-mentioned embodiment, the resin-coated wire 2 may be used. However, the use of the bare wire 2 without the resin coating as shown in the embodiment has an advantage that the weight of the entire hose can be reduced. In addition, the inner and outer double layers 1
A reinforcing yarn t may be interposed between the layers 3 and 14 as in the following embodiment.

In the embodiment shown in FIG. 7, the two metal-coated wires 2 and 2 are insulated from each other with a space provided therebetween, and the resin-coated wire material integrally covered with the resin-coating layer 3 is made to fall sideways. Arranged in a single pitch or in a double pitch,
Forming a first layer 15 forming the tube wall 1 on the outer peripheral surface thereof,
Reinforcing yarn t, which is crossed in a net shape or in a pipe axial direction, is disposed on the upper surface thereof, and a second layer 16 is formed on the outer peripheral surface of the reinforcing yarn t. And the second layer 1
6 has a tube wall structure that is interposed between the layers.

The embodiment shown in FIG. 8 has a tube structure similar to the tube structure shown in the first embodiment, and includes three wire rods 2A, 2 in which the metal-coated wire 2 is resin-coated.
This is a structure in which B and 2C are wound and arranged in a triple pitch shape. In this way, by adopting the structure having three wires or the structure having five wires 2, ..., One of the metal-coated wires may be used as the ground wire.

In addition to the cleaner hose for the electric vacuum cleaner described in the above embodiment, the hose H according to the present invention requires, for example, a drainage hose having a water absorption motor at its tip or other energization. The hose can be used as a hose for various types of equipment, and the shape of the tube wall 1 is not limited to the spiral wave shape itself. It is also possible to implement the tube structure in which the wall 1 is formed in a substantially flat and thick tubular shape inside and outside, and a plurality of metal-coated wires 2 ... Are embedded inside the tube wall 1.

Although the examples 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 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.

[0020]

As is apparent from the above description, in the flexible hose with a metal reinforcing wire according to the present invention, the reinforcing wire spirally wound around the pipe wall has an adhesive property with solder. Since the hard steel wire is immersed in an excellent metal melt to form a metal plated hard steel wire with a metal plating layer formed on its outer peripheral surface, the hose is made of the hard steel wire itself. Although it is possible to maintain the reinforcement and shape retention of, the metal plating layer formed on the surface of the hard steel wire is intended to carry out the current-carrying action.
Sufficient power can be supplied without the risk of wire breakage. Especially, in the case of a hard steel wire plated with electrolytic copper, there is no wire breakage phenomenon and repeated bending over many years. It was possible to obtain a hose that could withstand use.

Moreover, it can be obtained at a low cost because it can be obtained by a process of immersing it in a metal melt without spending time and power unlike a hard steel wire having electrolytic copper plating. This has the effect of significantly reducing the manufacturing cost of the.

[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 an enlarged perspective view of a resin-coated wire.

FIG. 4 is a front view of a partially omitted intermediate portion used as a cleaner hose.

FIG. 5 is a side view showing a state in which the electric vacuum cleaner is mounted.

FIG. 6 is an enlarged sectional view of a tube 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.

FIG. 9 is an enlarged sectional view of a pipe wall portion showing another embodiment.

[Explanation of symbols]

 (1) Pipe wall (2) Metal plated hard steel wire (3) Insulation coating layer (11) Convex corrugated part (21) Hard steel wire (22) Metal plated layer (H) Hose

Claims (2)

[Claims] 1. A flexible hose (H) made of synthetic resin, wherein a metal reinforcing wire is spirally wound around a pipe wall (1), and the reinforcing wire is bonded to solder. With a metal reinforcing wire composed of a metal-plated hard steel wire (2) formed by immersing a hard steel wire (21) in a metal melt having excellent properties and forming a metal plating layer (22) on its outer peripheral surface. Flexible hose. 2. The flexible hose with a metal reinforcing wire according to claim 1, wherein the metal plating layer (22) is a metal plating hard steel wire (2) made of any one of zinc, tin and lead.