JPH05228085A - Suction device for vacuum cleaner - Google Patents

Abstract

PURPOSE:To facilitate the operation of a suction device even on a carpet by arranging a drive wheel rotating integral with a rotor sticking out to the side of a floor surface at the center of a suction chamber in which a brush driven with a motor is supported free to rotate at an opening of the under-surface of the suction device. CONSTITUTION:A suction port 14 and a rotor 16 rotating with a motor 17 are arranged at an opening of the undersurface of a suction device 10 mounted on a hose free to turn to form a suction chamber 15. The rotor 16 is supported with a shaft 21 and a bearing 22 at both ends thereof free to rotate and driven with the motor 17 through a belt 18 and has a plurality of brushes on the surface thereof. A drive wheel 20 rotating integral with the rotor is mounted at the center of the rotor 16 and the outer circumferential surface thereof is made of an elastic material such as rubber material. The outer circumferential surface is made to stick out to the side of a floor surface at a lower suction port 13 composing the suction port 16. This enables the operation of the suction device lightly even when a cleaning is made on a carpet.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction device for an electric vacuum cleaner used in general households.

[0002]

2. Description of the Related Art Conventionally, the suction tool of this type of vacuum cleaner is
For example, a configuration as disclosed in Japanese Patent Application Laid-Open No. 2-144030 has been common. The configuration will be described with reference to FIG. The suction tool body 1 is provided with a rotor 2 and a drive source 3 thereof, and the rotation of the drive source 3 is transmitted to a gear 5 provided on the rotor 2 via a belt 4 to rotate the rotor 2. Further, a drive wheel 6 is provided in the rear portion of the suction tool body 1 for lightly operating the carpet, and a motor 7 for rotating the drive wheel 6 is provided.
Was provided.

[0003]

However, in the structure of such a conventional suction tool, a drive wheel 6 is provided at the rear portion of the suction tool body 1 for lightly operating the carpet, and the drive wheel 6 is rotated. Since the motor 7 is provided, the shape of the suction tool itself becomes large and heavy, and the structure intended for the original purpose, that is, easy to use, and that can be cleaned with a light operation, is not inevitable.

The present invention is intended to solve the above problems, and an object thereof is to provide a suction tool which is small in size, easy to use, and light on the carpet.

[0005]

In order to achieve the above object, the present invention provides a means for solving the problems, in the vicinity of the central portion of a rotor provided with a suction chamber for sucking dust and the like, to rotate integrally with the rotor. A moving drive wheel is attached, and this drive wheel projects below the suction port, and is driven simultaneously by a motor that drives the rotor via a gear portion.

[0006]

According to the present invention, by the above-mentioned means for solving the problems, a drive wheel which rotates integrally with the rotor is provided near the center of the rotor provided in the suction chamber, and the drive wheel is projected below the suction port. Since the drive wheel is rotated at the same time by the rotation of the motor that drives the rotor, the suction force of the suction tool is the strongest when cleaning the carpet, etc. The central portion can be driven by the drive wheels to apply a propulsive force to the suction tool, so that the suction tool can be lightly operated. Further, since the second motor for driving the drive wheels is not required, the size of the suction tool can be reduced.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. In the figure, 10 is a suction tool, and the bumper 1
A suction chamber 15 configured by connecting an upper suction tool 12 and a lower suction tool 13 via 1 and having a lower opening as a suction opening 14 in front of the upper suction tool 12 and the lower suction tool 13.
Is formed. Reference numeral 16 denotes a rotor rotatably provided in the suction chamber 15, which has a brush on its surface. Reference numeral 17 denotes a motor that serves as a drive source for the rotor 16, and a belt 18
The rotating force is transmitted to the gear 19 provided at one end of the rotor 16 via the so as to rotate the rotor 16. Reference numeral 20 denotes a drive wheel provided inside the suction chamber 15, the outer peripheral surface of which is formed of an elastic material such as a rubber material. The drive wheel 20 is mounted in the vicinity of the center of the rotor 16 so as to rotate integrally with the rotor 16, and the outer peripheral surface of the drive wheel 20 projects from the lower suction tool 13 forming the suction port 14 toward the floor side. The rotor 16 is rotatably held by bearings 22 via shafts 21 provided at both ends.

Next, the operation of the above configuration will be described. Suction chamber 1
5, a drive wheel 20 is provided in the vicinity of the central portion of the rotor 16 provided so as to rotate integrally with the rotor 16, and the drive wheel 2
0 is provided so as to project below the suction port 14, and the rotor 1
Since the drive wheel 20 is rotated at the same time by the rotation of the motor 17 that drives 6, the suction force of the suction tool 10 is strongest when cleaning the carpet, and the suction port 14 that is easily attached to the carpet or the like is used. The center portion can be driven by the drive wheel 20 to give a propulsive force to the suction tool 10, so that the suction tool 10 can be operated lightly.

[0009]

As described above, in the suction tool of the present invention, the drive wheel is provided near the center of the rotor provided in the suction chamber so as to rotate integrally with the rotor, and the drive wheel is provided with the suction port. Since the driving wheel is rotated at the same time by the rotation of the motor that drives the rotor by projecting downward, the suction force of the suction tool is the strongest when cleaning the carpet, etc. The center portion of the suction port, which is easy to drive, can be driven by the drive wheel to apply a propulsive force to the suction tool, so that the suction tool can be operated lightly and cleaning work can be performed easily. Further, since the second motor for driving the drive wheels is not required, the size of the suction tool can be made small, so that the cleaning work can be performed in a small rotation and cleaning can be further facilitated.

[Brief description of drawings]

FIG. 1 is a plan view in which a main part of a suction tool of an electric vacuum cleaner according to an embodiment of the present invention is cut away.

FIG. 2 is a sectional view of a suction tool of a conventional vacuum cleaner.

[Explanation of symbols]

 10 Suction Tool 14 Suction Port 15 Suction Chamber 16 Rotor 17 Motor 19 Gear 20 Drive Wheel

Claims (1)

[Claims] 1. A suction port for sucking dust and the like, a rotor provided in a suction chamber provided with a gear part, a motor for driving the rotor via the gear part, and a suction port provided in the suction chamber. A suction tool for an electric vacuum cleaner, comprising a drive wheel projecting downward, the drive wheel being attached to a portion near a central portion of the rotor so as to rotate integrally with the rotor, and being driven by the motor.