JP3519389B2 - Hoses for vacuum cleaners - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hose for a vacuum cleaner, in which a hard steel wire rod coated with a resin is spirally wound around and attached to an inner peripheral surface of a pipe wall formed of a soft synthetic resin material. It is about.

[0002]

2. Description of the Related Art A hoses for vacuum cleaners having a structure in which a hard steel wire rod coated with resin is spirally wound around and attached to the inner peripheral surface of a pipe wall formed of a soft synthetic resin material is shown in FIG. As shown in FIG. 3, the suction port B of the electric vacuum cleaner main body A and the suction port B ′ of the handle D provided on the upper side of the cleaning operation pipe C are connected, and the switch S provided on the handle D is turned on and off. The air sucked by the intake nozzle head E attached to the cleaning operation pipe C is transferred to the cleaner body A by the hose H connected to the cleaning operation pipe C.

In a conventional hose of this type, as shown in FIG. 3, a coated wire 4 in which a coating layer 3 of a resin material is formed on a hard steel wire 2 is formed on a pipe wall made of a soft synthetic resin material. The outer peripheral surface portion 4a of the covered wire 4 spirally wound around and attached to the inner peripheral surface 1a of the inner peripheral surface 1a of the inner peripheral surface 1a is the inner peripheral surface 1 of the pipe wall 1.
A projecting portion 1A, which is positioned in line with a and spirally projects on the outer peripheral surface 1b of the tube wall 1, is formed.

The protruding portions 1A, 1A that are spirally protruded.
A hose H has been proposed in which a covered wire 4 is almost buried in the inner peripheral surface 1a of the pipe wall 1 connecting the spaces, and the wall thickness is increased.

[0005]

[Problems to be Solved by the Invention]
Although the inner peripheral surface 1a in which the covered wire 4 is embedded in the pipe wall 1 is almost straightened by the H, the resistance of the suction air of the cleaner is reduced, but the pipe wall 1 becomes thicker and Surface 1
Since a and 1b are formed in a straight line and their flexibility is not good, there is a problem that they interfere with light cleaning.

The object of the present invention is to eliminate the disadvantages of the above-mentioned conventional example, in which a narrow and low corrugated portion 1c is spirally wound around the inner peripheral surface 1a of the pipe wall 1 and the outer peripheral surface 1b thereof. Is a hose provided with a spiral projecting portion 1A, which reduces suction air resistance of the inner peripheral surface 1a of the tube wall 1 as much as possible and has good flexibility, and reduces or bends in a uniform posture. It is to provide a hose for a vacuum cleaner which can always maintain the outer shape of the cleaner.

[0007]

In order to achieve the above-mentioned object, the present invention firstly comprises a coated wire 4 formed by coating a hard steel wire 2 with a synthetic resin to form a coating layer 3 of a soft synthetic resin. The inner peripheral surface 1a of the pipe wall 1 is spirally wound and installed so as to keep a constant interval, and the covered wire 4 is adhered or fused to the inner peripheral surface 1a of the pipe wall 1 and its outer peripheral surface. In the hose for a cleaner in which the spiral protrusions 1A, 1A are formed in 1b, the inner and outer peripheral surfaces 1a, 1 of the pipe wall 1 connecting the covered wires 4, 4 are connected.
It is formed so that the top surface of the corrugated portion 1c of the inner peripheral surface 1a in which b is corrugated is positioned in line with the outer peripheral end portion 4a of the covered wire 4, and secondly, between the covered wires 4 and 4. The outer peripheral surface 1b of the pipe wall 1 to be connected is a straight smooth surface, and the inner peripheral surface 1a is formed so that the top surface of the corrugated portion 1c is aligned with the outer peripheral end portion 4a of the covered wire 4. It is a summary.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows a first embodiment of the present invention. A hoses H for a vacuum cleaner of the present invention is a coated wire in which a hard steel wire 2 is coated with a synthetic resin material to form a coating layer 3. 4 is spirally wound around the inner peripheral surface 1a of the pipe wall 1 made of a soft synthetic resin so as to keep a constant interval, and the covered wire 4 is bonded to the inner peripheral surface 1a of the pipe wall 1 or Fused,
A hose H having a protruding portion 1A formed in a spiral shape is formed on the outer peripheral surface 1b thereof, and the pipe wall 1 connecting the covered wires 4 and 4 is relatively narrow and has a low wavy shape. The portion 1c was formed so that the top of the wavy portion 1c was located in line with the outer peripheral surface end 4a of the covered wire 4.

FIG. 2 shows the first embodiment of the present invention. The cleaning machine hose H of the present invention is carried out almost in the same manner as the first embodiment described above. A relatively narrow and low wavy portion 1c is formed only on the inner peripheral surface 1a of the pipe wall 1 connecting the covered wires 4 and 4, and the outer peripheral surface 1b is formed.
Is a straight smooth surface.

In the first and second embodiments, the coating resin layer 3 forming the coated wire 4 is adhered by a resin of the same quality or a similar type as the resin forming the tube wall 1, but the fusion bonding property is I also hope it is good.

The thickness of the tube wall 1, the diameter of the hard steel wire 2 and the covered wire 4 are determined by the size of the inner diameter of the hose H which is determined.
The diameter or the spiral spacing of the covered wire 4 is selected or designed by a predetermined test.

In particular, the interval at which the resin-coated wire 4 is wound in a spiral shape and attached is reduced when the compressive force in the axial direction of the pipe body is applied or the force is applied in the bending direction, the entire pipe wall is reduced in a uniform posture. Set to maintain proper posture when being bent or bent.

[0013]

As described above, the vacuum cleaner cleaner of the present invention is used.
The pipe has a relatively narrow and low corrugated pipe wall 1 connecting the covered wires 4 and 4, and the top of the corrugated portion 1c of the inner peripheral surface 1a thereof is directly aligned with the outer peripheral end 4a of the covered wire 4. Since it is located on the line, the resistance of the air sucked into the pipe is relatively low, and its flexibility is superior to the hose in which the inner and outer peripheral surfaces 1a and 1b of the pipe wall 1 are aligned. It is what

Further, even when the narrow and low corrugated portion 1c is formed only on the inner peripheral surface 1a of the pipe wall 1, the air resistance sucked into the pipe is relatively low, and only the outer peripheral surface 1b is straight. Even if formed, its flexibility is better than that in which the inner and outer peripheral surfaces of the tubular body are aligned.

In this way, the hoses for a vacuum cleaner according to the present invention can always handle the vacuum cleaner lightly and lightly due to the above characteristics.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view showing a first embodiment of a hose for a vacuum cleaner according to the present invention with a part cut away.

FIG. 2 is an enlarged cross-sectional view showing a second embodiment of a cleaning machine hose according to the present invention with a part cut away.

FIG. 3 is an enlarged cross-sectional view in which a part of a conventional cleaner hose is cut away.

FIG. 4 is a side view illustrating a usage state of the hoses for the electric vacuum cleaner.

[Explanation of symbols]

1 ... Pipe wall 1a ... Inner peripheral surface 1b ... Outer peripheral surface 1c ... Wavy portion 1A ... Projection 2 ... Hard steel wire 3 ... coating layer 4 ... coated wire 4a ... Outer peripheral edge

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-9-66010 (JP, A) JP-A-10-14834 (JP, A) Actual development Sho-50-122465 (JP, U) Actual public Sho-51- 38039 (JP, Y2) (58) Fields surveyed (Int.Cl. ⁷ , DB name) A47L 9/24

Claims (2)

(57) [Claims] 1. A coating layer 3 formed by coating a hard steel wire 2 with a synthetic resin.
The coated wire 4 having the above-mentioned structure is spirally wound around the inner peripheral surface 1a of the tube wall 1 made of a soft synthetic resin so as to keep a constant interval. The spiral protrusion 1 is adhered or fused to the peripheral surface 1a and is provided on the outer peripheral surface 1b.
In a cleaning machine hose having A and 1A formed therein, inner and outer peripheral surfaces 1a and 1b of a pipe wall 1 connecting between the covered wires 4 and 4 are provided.
A hosing for a vacuum cleaner, characterized in that the top surface of the wavy portion 1c of the corrugated inner peripheral surface 1a is formed so as to be aligned with the outer peripheral end portion 4a of the covered wire 4. 2. The outer peripheral surface 1b of the pipe wall 1 connecting the covered wires 4, 4 is a straight smooth surface, and the inner peripheral surface 1a is a corrugated portion 1.
2. The cleaner cleaner horn according to claim 1, wherein the top surface of c is formed so as to be aligned with the outer peripheral end 4a of the covered wire 4.
Su.