JP2001061723A - Attachment for vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide maximum efficiency and best results in dust removal, to be released from the troublesomeness of interrupting and redoing work and to evade the burning of a motor due to the overload operation of the motor by generating an intensively low pressure state inside a nozzle and continuing it. SOLUTION: Working is performed to a conventional tubular nozzle and the continuous operation of a cleaner is made possible. In the method, by piercing the small number of small holes 2 on a wall surface near a suction port and making the small amount of air flow in from the small number of the small holes 2, a strong sucking phenomenon is generated without bringing the motor into an overload state. By continuing it and maintaining strong suction force, dust is completely removed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an attachment for a vacuum cleaner, and to a cylindrical suction nozzle. In particular, it can be used to remove old dust that accumulates in narrow gaps, such as between furniture and behind a television.

[0002]

2. Description of the Related Art Conventionally, a long flexible tubular nozzle (FIG. 5) attached to a vacuum cleaner (not shown) and a suction nozzle 60 shown in FIG. One having a number of small holes near the mouth, one having a slit in FIG. 7, a straw-shaped suction port 4 and a brush 3 in FIG.
There is an attachment having a straw-shaped tube in which is planted with.

[0003]

In the conventional nozzle, the suction port is in close contact with the surface to be cleaned and cannot be sucked, or the amount of inflow of air from the vicinity of the suction port other than the suction port is large, and the suction force is weakened. There is a problem that hinders the operation. Hereinafter, each will be described. When adhesion is a problem In the case of the tube-shaped suction port shown in FIG. 5, if the suction port sticks to the floor surface, the suction port becomes in close contact with the floor surface, so that air cannot flow through the suction port and dust cannot be sucked. Further, at this time, the motor is overloaded, an abnormal sound is generated, and the operation must be interrupted. Therefore, the nozzle is tilted so as not to be sucked. However, if the nozzle is tilted too much, dust cannot be sucked.
Suck and adhered. In this close contact state, the dust can be sucked and removed most efficiently in terms of function, but the main problem is to solve this problem.

When the amount of air flowing in from other than the suction port is a problem, the number of small holes near the suction port is large at 60 in FIG.
Due to the large amount of air flowing from these, the suction force from the suction port is weakened. At 80 in FIG. 8, the suction force is weak because the amount of air suction at the suction port 4 is small, so that it becomes impossible to suck dust unless the nozzle is brought very close to the surface to be cleaned. In the same manner as in the case of the suction port 1 of No. 5 and 50, the nozzles stick to each other and come into close contact with each other, so that the suction of dust from the nozzles becomes impossible.

On the upper surface of the chest where dust easily accumulates, the tube-shaped suction port 1 shown in FIG. 5 can be used. In this case, since the position of the surface to be cleaned is high, it is difficult to perform the operation with the conventional nozzle, and heavy cleaning is performed. It is necessary to lift the main body, and the suction phenomenon of the suction port also occurs. Another problem is to solve the inconvenience caused by the height of the surface to be cleaned, other than the suction phenomenon.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object the purpose of bringing the above-mentioned suction port into close contact with the surface to be cleaned by suction while keeping it substantially sealed. An object of the present invention is to completely remove even fine dust without generating a suction force due to a strong negative pressure in the nozzle and interrupting the cleaning operation. When the suction port is brought into close contact with the surface to be cleaned and the switch is turned on, the air pressure in the suction nozzle increases with the passage of time, and the degree of vacuum increases.負 Negative pressure, which is a strong suction force generated in the sealed nozzle, reaches a level that opposes the suction force of the motor, and the vacuum cleaner enters an overload state. It occurs and eventually burns out. In the present invention, this problem is solved by piercing a small number of small holes near the suction port and allowing a small amount of air to flow through the small holes.

In the operation according to the present invention, the cylindrical tube receives a strong contraction shock due to the strong negative pressure generated therein, but the cylindrical tube does not deform and collapse due to the cylindrical shape. Further, dust can be easily and efficiently sucked and removed by the strong generated suction force. In addition, cleaning may be difficult to perform because the position of the surface to be cleaned is high. For this reason, at this time, it is possible to select and attach an attachment in which the suction port has an inclined surface shape, and to work by tilting the nozzle. These can be achieved by using the attachment according to claims 1 to 6.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The case where the second and fifth aspects of the present invention are used will be described. When Attachment 20 of Claim 2 is Used At 20 in FIG. 2, the inclination of the suction port 1 is 60 degrees, and the suction port 1 is used to absorb dust such as carpets and wall surfaces between furniture in the room. Suction port 1
Sticks to the carpet, but cylindrical pipe attachment 2
0 can be moved smoothly in the lateral direction, and air flows in from the small holes 2, so that the motor does not become overloaded, and the dirt can be sufficiently removed without interrupting the cleaning. The same can be applied to a wall surface or the like. Note that an angle other than the inclination angle of 60 degrees can be used.

When the attachment 30 of claim 5 is used, important objects such as documents are scattered in the room, and there is a case where it is desired to remove dust without organizing them. If the paper is scattered, use a weaker suction power to avoid paper suction, and use the other places to clean with stronger suction power. At this time, in order to prevent the paper from being sucked and damaged at the place where the document is located, the tube-shaped slide 31 is moved in the opposite direction to the suction port to increase the inflow of air from a small hole near the suction port other than the suction port. The dust removal is performed without any trouble by reducing the suction power.

[0010]

EXAMPLE The inside diameter of the suction nozzle is 33 mm, the diameter of the small hole is 4 to 5 mm, and the distance from the suction port to the center of the first small hole is 7 mm.
mm. A case of removing dust on the upper surface of the chest using the attachment 40 of claim 6 will be described. The diameter of the small holes is 5 mm. Remove dust accumulated on the upper surface of the chest. Considering that the position of the surface to be cleaned is high, it is possible to use a nozzle having an inclination angle of the suction port of 45 degrees. Since the old accumulated dust is thickly attached to the surface and requires a strong suction force, the attached tubular slide 41 is moved near the suction port to open two small holes 2 and work. The dust could be smoothly removed over the entire surface in a short time without causing the suction port to stick to the surface to be cleaned and causing the motor to be overloaded. This shows an example in which the adjustment of the suction force at the suction port can be performed with the opening area of the small hole 2 reduced by moving the tubular slide 41.

By using the same attachment 40 as described above, the dust accumulated on the upper side of the duck in the room is removed. The nozzle used has a suction port having an inclination angle of 45 degrees. In this case, there is a linear groove on the upper surface of the Kamoi, so the suction port does not stick to this surface. In such a case, the tubular slide 41 is moved to the vicinity of the suction port to cover all the small holes. Work with maximum suction power. Since the inclination angle of the suction port at this time is 45 degrees, the nozzle is lifted above the head and moved in the length direction of the groove. The sticking phenomenon did not occur, and the dust was almost completely removed.

[0012]

As described above, according to the suction nozzle of the present invention having a small hole formed in the vicinity of the suction port, when the conventional closed state is maintained, the motor enters the overload operation state. However, it is not necessary to stop the dust removal work. On the other hand, as described in the means for solving the problem by using the conventional suction sealing phenomenon, the low pressure By generating the state in the nozzle and continuing the state, the maximum efficiency and the best result can be obtained by removing dust, and the trouble of interrupting the work and re-starting the operation is eliminated. It also makes it possible to avoid burnout of the motor due to overload operation of the motor.

[Brief description of the drawings]

FIG. 1 is a perspective view of a suction nozzle according to an example of the present invention.

FIG. 2 is a perspective view of a modified mold 20 of the nozzle 10 of FIG. 1 in one example of the present invention.

FIG. 3 is a perspective view of a nozzle tube 30 which is an improved type of the nozzle 10 of the present invention and has small holes added to the nozzle, and a perspective view of a slide tube 31 fitted into the nozzle tube 30.

FIG. 4 is a perspective view of a modified mold 40 of the nozzle 30 of the present invention and a modified mold 41 of the slide tube 31 fitted therein.

FIG. 5 is a perspective view of a conventional suction nozzle.

FIG. 6 is a perspective view of the suction nozzle of the prior application.

FIG. 7 is a perspective view of a conventional suction nozzle.

FIG. 8 is a perspective view of a conventional suction nozzle.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 Suction port of nozzle 2 Small hole 3 Brush implanted in straw-shaped tube of FIG. 8 4 Straw-shaped suction port of FIG. 10 10 Suction nozzle tube of FIG. 1 of the present invention 20 Suction nozzle tube of FIG. 2 of the present invention 30 Suction nozzle tube 31 of FIG. 3 of the present invention 31 Slide tube of FIG. 3 of the present invention 40 Suction nozzle tube of FIG. 4 of the present invention 41 Slide tube of FIG. 4 of the present invention 50 Conventional suction nozzle tube 60 of FIG. 6 Suction nozzle tube of the prior application 70 Conventional suction nozzle tube having a slit of FIG. 7 80 Suction nozzle tube having a straw-shaped suction port of FIG. 8

Claims (6)

[Claims] 1. A suction nozzle having a cylindrical shape having a circular suction port, wherein a small number of small holes are formed in the vicinity of the suction port on the nozzle wall. 2. The nozzle according to claim 1, wherein the shape of the suction port of the nozzle and the position of the perforation of the small hole are changed, and the nozzle is inclined from a direction perpendicular to the longitudinal direction of the cylinder of the nozzle. 2. The suction port shown in FIG. 2 is formed in an oval shape around the cylinder of the cut portion, and the small hole is formed in the vicinity of the elliptical suction hole. The number of the suction nozzles is small. 3. The suction nozzle according to claim 1, wherein the small holes are pierced in the vicinity of the suction port, and the small holes are located near the suction port. A suction nozzle which is scattered around the length of the cylinder and has a small number of small holes. 4. The suction nozzle according to claim 2, wherein the perforations of the small holes are different from each other. Characterized in that the number of small holes is small and the number of small holes is small. 5. The suction nozzle according to claim 3, wherein a cylinder 31 shown in FIG. 3 is fitted on the outer peripheral surface of the suction nozzle so as to be movable in the longitudinal direction of the cylinder 30 of the suction nozzle. nozzle. 6. The suction nozzle according to claim 4, wherein a cylinder 41 shown in FIG. 4 is fitted on the outer peripheral surface of the suction nozzle so as to be movable in the longitudinal direction of the cylinder 40 of the suction nozzle. nozzle.