JPH0759693A - Flexible force with reinforcing wire - Google Patents

Abstract

PURPOSE:To provide a flexible hose which is lightweight, in which a power feed circuit may be formed and which may be smoothly used and may be automatically shrunk so as to decrease its bulk and length, and which may be stored in a small storage space while preventing inferior appearance. CONSTITUTION:A synthetic resin hose H has a spirally corrugated wall and metal reinforcing wires which are provided in the convexly corrugated parts. The reinforcing wires are formed of copper-plated hard steel wire 2 in which each hard steel wire 21 is coated over its outer peripheral surface with a copper plating layer 22. The convexly corrugated parts 11... of the wall 1 of the hose comes together or make into contact with one another by the shrinkage pressure of the hard steel wires 2 in the normal posture of the hose H.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hose suitable for use as a cleaner hose mainly attached to an electric vacuum cleaner.

[0002]

2. Description of the Related Art The structure of a conventional hose used in an electric vacuum cleaner of this type is such that the pipe wall is formed in a spiral corrugated shape, and the metal reinforcing wire is bare so that the pipe wall is convex. In general, a corrugated part is wrapped in the corrugated part, or a resin-coated part is arranged on the inner peripheral surface side of the convex corrugated part.

[0003]

By the way, the cleaner hose attached to the electric vacuum cleaner is not only for sucking in air, but also for the power source of the electric vacuum cleaner at the hand-held portion of the operation tube. ON-OF
In addition to the F operation, the motor and the rotating brush are attached to the intake nozzle head N attached to the tip of the operation tube P shown in the attached sheet FIG. 4, and the rotation suitable for the type of the object to be cleaned such as floor or carpet is brushed. A new type of electric vacuum cleaner is being used, which has the function of efficiently cleaning the brush while applying it to the floor or changing the height of the brush above the floor. However, in the hose having the conventional structure, in order to cope with such a function, an electric wire for power must be provided in the hose in addition to the reinforcing wire, which causes a problem that the hose becomes heavy.

On the other hand, in the conventional hose, in a normal posture, the convex corrugated portions of the pipe wall are spaced apart from each other to form a smooth corrugated corrugation, and the hose has a length suitable for use. It's ideal for use, except that the hose weighs heavily,
When not in use, the hose is bulky and requires a large storage space, and it is difficult to avoid that the storage posture is disturbed and unsightly.

Therefore, the present invention is intended to solve the problems of such conventional hoses, and is suitable for hoses for electric vacuum cleaners having the above-mentioned new functions, and is suitable for powering the suction nozzle head. Although it can be easily energized, the overall weight of the hose is almost the same as that of a hose with only conventional reinforcing wires that cannot be energized by power. It is an object of the present invention to provide a hose that can be used without any problem at times, and automatically becomes small and short when not in use, requires a small storage space, and avoids unsightly appearance when not in use.

[0006]

The structure of the present invention for achieving the object will be described with reference to the reference numerals of the drawings corresponding to the embodiments. The hose H according to the present invention is a convex corrugated pipe wall 1. The reinforcing wire arranged inside the portion 11 is a copper-plated hard steel wire 2 in which a copper plating layer 22 is formed on the outer peripheral surface of the hard steel wire 21, and the hard steel wire 2 is intended to shrink in the axial direction of the hose. When the hose is wound in the spiral direction in a state where the hose is in a normal posture, the convex corrugated portions 11 of the pipe wall 1 ... Contact or approach each other due to the contraction pressure of the hard steel wire 2. It has a structure that provides a posture.

[0007]

Since the hose H according to the present invention has such a structure, when it is used as a hose for an electric vacuum cleaner, as shown in FIG. The bodies 4 and 5 are connected and integrally formed, and the connecting cylinder 5 on one end side thereof is connected and connected to the suction cylinder a of the vacuum cleaner main body A, and at the same time, the electric connector is inserted and connected. The connection cylinder body 4 on the other end side is connected and connected to the upper end b of the operation cylinder P, and at the same time, an electric connector is inserted and connected.

In this way, the hose H of the present invention is connected and connected between the vacuum cleaner main body A and the operating cylinder P via the connecting cylinders 4 and 5 on both sides, and the vacuum cleaner main body A and the intake air are connected. A series of air paths are formed between the cleaning nozzle head N and the power source of the vacuum cleaner main body A and the motor installed in the suction nozzle head N, and on the outer peripheral surface of the hard steel wire 21. By forming an energization path by the copper plating layer 22 and turning on the operation switch of the operation tube P, the motor is rotated and the brush is rotated, and dust is sucked from the nozzle of the suction nozzle head N to clean it.

When this hose is used, when a pulling force is applied to the hose, the hose has an appropriate length between the normal contracting posture and the posture in which the unevenness of the tube wall is almost eliminated according to the magnitude of the pulling force. It can be freely stretched and can be used like a conventional hose without causing any discomfort. Also, when the pulling force on the hose disappears after cleaning, the restoring shrinkage force of the reinforcement wire 2 automatically restores the normal shrinking posture, which makes it a short and short piece, which conveniently fits in a small storage space and is not used. You can avoid the unsightlyness of time.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 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 a cross-sectional shape of a pipe wall portion. It is a figure.
The hose H is made of, for example, flexible polyvinyl chloride (PV
C), polyethylene (PE), polypropylene (PP)
Using other soft synthetic resin material, the hose wall is formed into a tube wall 1 having a double pitch spiral corrugated shape along the axial direction, and a steel wall is formed on the inner surface side of the convex corrugated portion 11 of the tube wall 1. A copper plating reinforcing wire (hereinafter referred to as a CP wire) having a hard steel wire (such as a hard wire) 21 such as a wire, a piano wire, and a stainless wire as a core material and a copper plating layer 22 formed on the outer peripheral surface thereof. ) 2 which is insulation-coated with 2
The wire rods 2A and 2B are arranged in a double pitch and the insulating coating layer 3 is adhered to the tube wall 1.

The hose H is wound around the CP wire 2 in a spiral shape, and in this embodiment, the two insulation-coated wires 2A and 2B are wound in a spiral shape. By applying a twisting force and winding it in a spiral direction in a state where a predetermined interval is opened, a force for contracting in the axial direction of the tube is applied. By doing so, when the hose is in the normal posture, as shown in FIG. 2, the wires 2A, 2B, especially the CP wire 2 inside the coating, are twisted by a force that tends to contract in the axial direction of the hose. Convex corrugated portion 11 of wall 1 ... Abutting on or close to each other, the convex corrugated portion 11 and the convex corrugated portion 11 of the pipe wall 1
The structure is such that the portion 12 forming the valley portion between and is in the folded posture toward the inner peripheral surface of the hose in the normal posture of the hose.

The hose H thus formed is free to expand in the axial direction against the force applied to the wire rods 2A and 2B to shrink in the axial direction when an external force is applied in the axial direction. It can be used as if it were a hose, without any special discomfort.

3 and 4 are views showing an embodiment in which this hose is used as a hose for an electric vacuum cleaner, that is, a cleaner hose, and FIG. 3 shows a shape in which a part of the cleaner hose is interrupted. FIG. 4 shows an example of a situation in which this is attached to the electric vacuum cleaner A. Hose H of the embodiment
Attaches separately formed connection cylinders 4 and 5 to both ends of the main body of the hose H, and at the same time, connects the CP wires 2 and 2 of the two wires 2A and 2B to the respective connectors 4a and 5a. CP for both connectors 4a and 5a
It is electrically connected by lines 2 and 2.

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 main body A of the vacuum cleaner. 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 an air suction path and an electric conduction path are formed at the same time,
By turning on the switch S provided on the operation tube P, the motor provided on the intake nozzle head N at the tip of the operation tube P is operated to rotate the rotary brush, and the intake air is sucked in the same manner as a general vacuum cleaner. Inspire air from the nozzle to clean the floor, carpet, and other objects to be cleaned.

The embodiment shown in FIGS. 5 and 6 is another embodiment of the hose, and the hose H shown in FIG. 5 is a CP provided on the inner peripheral surface side of the pipe wall 1. The cross-sectional shape of the insulating coating layer 3 of the wire 2 is a chicken egg shape, and the normal electric wire 6 is separated from the CP wire 2 in an insulated state so as to be integrally embedded and covered to form a two-wire structure wire rod. In the hose H shown in FIG. 6, the cross-sectional shape of the insulating coating layer 3 of the CP wire 2 arranged on the inner peripheral surface side of the tube wall 1 is oval, and the two CP wires 2 and 2 are insulated from each other. This is a wire rod having a two-wire structure in which the wire rod is integrally embedded and separated from the above. The cross-sectional shape of the coating layer 3 can be any shape, for example, a dharma shape in FIG. 5 or an 8 shape in FIG. The other structure is similar to that of the first embodiment. In the case of a hose using a wire having such a two-wire structure, a hose in which one wire is arranged at a single pitch may be used, and two hoses are used as in the case of the first embodiment. Two power circuits can be formed in a hose arranged in a double pitch. Also,
It is also possible to use one circuit for communication and the other circuit for power.

In the embodiment shown in FIG. 7, the tube wall 1 of the hose H is
Is an embodiment of a hose having a double layer of an outer wall 13 and an inner wall 14, wherein the outer wall 13 of the convex corrugated portion 11 of the spiral corrugated corrugated portion of the tube wall 1 is formed to be thick, and the inner and outer double layers 13, 14 of This structure has a structure in which two CP wires 2A and 2B having no insulating coating are sandwiched between the layers in a double pitch shape. In this case, of course, a CP wire having an insulating coating may be used, but using a bare CP wire has an advantage that the overall weight of the hose can be reduced. Further, a reinforcing thread may be interposed between the inner and outer double layers 13, 14 as in the following embodiment.

The embodiment shown in FIG. 8 is such that the two CP wires 2 and 2 are separated from each other in an insulating state and the insulating coating 3 is integrally formed as in the case of the embodiment shown in FIG. , The cross-sectional shape is formed in a figure 8 shape, and the covered wire rod is arranged in a single-pitch shape or a double-pitch shape in a laterally laid state, and the first layer 15 forming the pipe wall 1 is formed on the outer peripheral surface thereof. The reinforcing yarn t is arranged on the upper surface thereof along the tube axis direction or in the shape of a net, and the second layer 16 is formed on the outer peripheral surface of the reinforcing yarn t to form the reinforcing yarn t as the first layer 15. The tube wall structure is interposed between the second layer 16 and the second layer 16.

The embodiment shown in FIG. 9 has a tube structure similar to the tube structure shown in the first embodiment, and includes three wire rods 2A, 2B, 2 with insulation coated on the CP wire 2.
This is a structure in which C is wound and arranged in a triple pitch shape. Thus, the structure having three wires, the structure having five wires, or the wire having the two-wire structure shown in FIGS. 5, 6 and 8 is arranged in a double pitch or a triple pitch. Therefore, one CP wire may be used as a ground wire.

The hose H according to the present invention, even if the CP wire 2 is sandwiched between the layers of the tube wall 1 as in the embodiment of FIG. Wall 1
It may be arranged on the inner surface side of the. Also, the pipe wall 1
In the case of the one disposed on the inner surface side, the insulating coating layer 3 and the tube wall 1 may be fused or bonded by using an adhesive, or may not be bonded in some cases. Good.

The material forming the tube wall 1 of the hose H according to the present invention may be a material having appropriate hardness and flexibility in addition to the materials such as polyvinyl chloride, polyethylene, polypropylene, etc., which are exemplified in the first embodiment. However, the material is not particularly limited. Also, the uneven corrugation of the hose wall is for flexibility, and the cross-sectional shape of the convex corrugation is not limited to the arcuate shape as shown in the drawing, but may be any shape such as square, trapezoidal, triangular or any other shape. The same applies to the cross-sectional shape of the CP wire 2 and the outer shape of the coating layer 3. Further, the hose of the present invention is used as a hose for a vacuum cleaner other than the hose for an electric vacuum cleaner shown in the embodiment, for example, a hose for a drainage machine in which a water absorption motor is attached to a tip end thereof, or a hose for other various devices that require energization. Is what you can do.

Although the examples considered to be representative 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.

[0023]

As is apparent from the above description, in the flexible hose of the present invention, the reinforcing wire arranged inside the spiral convex corrugated portion of the pipe wall is plated with copper on the outer peripheral surface of the hard steel wire. By forming a layer to make a copper-plated hard steel wire and applying a force to shrink the hard steel wire in the axial direction of the hose and winding it in a spiral direction with a predetermined gap open to manufacture a hose Since the hose is constructed in such a manner that the convex corrugated portions of the pipe wall are in contact with or close to each other due to the contraction pressure of the hard steel wire in the normal posture, connecting tube bodies are connected to both ends of the hose and the copper plating is hardened. By connecting the end of the steel wire to the connector, it is possible to connect a hose between the required equipment and form a fluid passage and at the same time form a power conducting circuit. Copper formed on the surface of the wire Since is performed by luck layer, there is a remarkable effect that it is possible to perform very easily sufficient power energization in the absence of fear of disconnection.

In addition, as compared with a conventional hose having a reinforcing wire and an insulating coated wire of a copper thin wire for energizing like a hose with a reinforcing wire, only a copper plated hard steel wire is required, so that the entire hose can be used. The weight can be reduced, the manufacturing process can be simplified, and the manufacturing cost can be reduced.
Furthermore, since it is automatically shortened when not in use, it does not become bulky, it fits conveniently in a small storage space, avoids unsightlyness, and when using it, the copper plated hard steel wire should Since the tube wall is formed with the space left open, there is no resistance when the tube wall in the contracted state is stretched by the pulling force, and it is easily stretched. It has a remarkable effect that it can be used while being stretched into a long state without causing a feeling of strangeness.

[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 front view in which a middle portion of a cleaner hose is partially 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.

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

[Explanation of symbols]

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

Claims (1)

[Claims] 1. The tube wall is formed in a spiral corrugated shape,
And, a flexible hose (H) made of synthetic resin in which a reinforcing wire made of metal is arranged inside the convex corrugated portion, wherein the reinforcing wire is copper-plated on the outer peripheral surface of the hard steel wire (21). The hose (H) consists of a copper-plated hard steel wire (2) with a layer (22) formed, and the hose (H) is in the normal position due to the contraction pressure of the hard steel wire (2).
1) ... A flexible hose with a reinforcing wire that is in contact with or close to each other.