JPH05176869A - Suction device for vacuum cleaner - Google Patents

Abstract

PURPOSE:To provide a suction device which is small and easy to use and allows handy operation even on a carpet. CONSTITUTION:The numeral 20 indicates a pair of drive wheels provided on the left and on the right of a suction port 14 and the outer circumferential surface thereof is made of an elastic material such as rubber material. The drive wheels 20 have the outer circumferential surface sticking out to the side of a floor surface from a lower suction device 13. One of the drive wheels 20 and a gear 19 are so arranged that the drive wheel 20 is mounted on the side of a rotor 16 and the gear 19 outside at the end of the rotor 16. The both are connected firmly with a shaft 21. The other drive wheel 20 is mounted at the other end of the rotor 16 and connected with the shaft 21. The numeral 22 indicates a bearing and both ends of the rotor 16 are held free to rotate through the shaft 21. The drive wheels 20 are made larger in the outer dimension than the gear 19 and mounted adjacent to the gear 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction tool 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. 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.

[0003]

In such a conventional structure, a drive wheel 6 is provided at the rear portion of the suction tool body 1 for lightly operating the carpet, and a motor for rotating the drive wheel 6 is provided. Since 7 is provided, the suction tool itself has a large shape and is heavy, and the original purpose is that it is easy to use and cannot be cleaned with a light operation.

SUMMARY OF THE INVENTION The first object of the present invention is to solve the above problems and to provide a suction tool which is small in size, easy to use, and light on the carpet.

A second object is to provide a structure of the gear portion which makes it easy to remove the rotor. A third object is to provide a structure of a gear portion in which dust or the like is difficult to be bitten.

[0006]

In order to achieve the above object, the first means of the present invention is to rotate integrally with a rotor provided with a gear portion, which is provided at a suction port for sucking dust and the like. A drive wheel is provided, and the drive wheel is simultaneously driven by a motor that drives a rotor through a gear portion. The second means is one in which the drive wheel is arranged on the inner side of the gear portion provided on the rotor, that is, on the rotor side. The third means is one in which the drive wheel provided on the rotor side is adjacent to the gear portion.

[0007]

Since the drive wheel is provided integrally with the rotor as in the first means, the drive wheel is simultaneously rotated by the rotation of the motor that drives the rotor. Can be cleaned. 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 turn and easy to clean. Next, since the drive wheel is formed on the inner side of the gear portion provided on the rotor by the second means, that is, on the rotor side, the gear portion can be easily removed from the belt, so that the rotor can be easily removed. Further, even if the drive wheel is large and wide in order to make the operability lighter, the gear portion can be easily removed, so that the rotor can be easily removed. The drive wheel provided on the rotor side by the third means is formed adjacent to the gear part.Even if dust or the like is entangled with the rotor during the cleaning work, the drive wheel is Since the outer diameter is large, it is possible to prevent dust from entering the gear portion, so that stable rotation of the rotor can be maintained.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the first, second and third means of the present invention will be described below with reference to FIGS. 1, 2, 3 and 4. Reference numeral 10 denotes a suction tool, which is configured by connecting an upper suction tool 12 and a lower suction tool 13 via a bumper 11, and a suction chamber 15 having a lower opening as a suction port 14 is formed in front of it. Reference numeral 16 denotes a rotor that is rotatably provided in the suction chamber 15 and includes a brush. Reference numeral 17 denotes a motor which is a drive source of the rotor 16 and transmits a rotational force to a gear 19 provided at one end of the rotor 16 via a belt 18 to rotate the rotor 16. Reference numeral 20 denotes a pair of drive wheels provided on the left and right of the suction port 14, and the outer peripheral surface is formed of an elastic material such as a rubber material. This drive wheel 20 has a lower suction tool 13 on the outer peripheral surface.
It is configured to project more toward the floor side. This drive wheel 20
One side of the drive wheel 20 and the gear 19
A gear 19 is attached to the outside of the rotor 16 side, and the gear 19 integrally forms a shaft 21.
The drive wheel 20 is sandwiched and fixed by the gear 19 and the rotor 16. At the other end of the rotor 16, the drive wheel 20
The other end is attached and connected by a shaft 21.
Reference numeral 22 denotes a bearing, which rotatably holds both ends of the rotor 16 via the shaft 21. Also, the drive wheel 20
The outer diameter of the gear 19 is larger than that of the gear 19, and the gear 19 is mounted adjacent to the gear 19.

The operation and action of this embodiment will be described. By the first means, a pair of drive wheels 20 are provided on the left and right sides of the suction port 14 by the operation of rotating the rotor 16 with the motor 17 when cleaning the carpet, and are provided integrally with the rotor 16 in rotation. Rotate at the same time. Since this drive wheel 20 projects from the lower surface of the lower suction tool 13 to the carpet side, the rotational force of the drive wheel 20 gives a forward driving force to the suction tool 10. You can Further, by the second means, the drive wheel 20 is arranged on the inner side of the gear 19, that is, on the side of the rotor 16 when dust or the like is entangled with the rotor 16, so that the gear 19 can be easily removed from the belt 18. ,
Removing the rotor is easy. Further, even if the drive wheels 20 are large and wide in order to make the operability lighter, the gears 19 can be easily disengaged even if the drive wheels 20 are configured to be wide, so that the removability of the rotor 16 does not deteriorate. Next, the drive wheel 20 provided on the rotor 16 side by the third means is formed adjacent to the gear 19, and the drive wheel 20 with respect to the outer diameter of the gear 19 is formed.
Since the outer diameter of the rotor is large, even if dust or the like is entangled with the rotor during the cleaning work, the dust can be stopped by the drive wheels 20, so that the dust can be prevented from entering the gear 19 and the stable rotor 16 The rotation of can be maintained.

[0010]

As described above, according to the present invention, in the first means, since the drive wheel is provided integrally with the rotor for rotation, the rotation of the motor for driving the rotor when cleaning the carpet is performed. Since the drive wheels are also rotated at the same time, the propulsive force of the drive wheels allows the suction tool to be lightly operated and cleaned even on a carpet. Further, since the second motor for driving the drive wheels is not required, the size of the suction tool can be made small,
The cleaning work is small and it is easy to clean. Next, since the drive wheel is formed on the inner side of the gear portion provided on the rotor by the second means, that is, on the rotor side, the gear portion can be easily removed from the belt, so that the rotor can be easily removed. Also, in order to make the operability lighter, even if the drive wheel is large and widely configured, the gear part can be easily removed, so
The removability of the rotor does not deteriorate. The drive wheel provided on the rotor side by the third means is formed adjacent to the gear part.Even if dust or the like is entangled with the rotor during the cleaning work, the drive wheel is Since the outer diameter is large, it is possible to prevent dust from entering the gear portion, so that stable rotation of the rotor can be maintained.

[Brief description of drawings]

FIG. 1 is a sectional view of a main part of a suction tool of an electric vacuum cleaner showing an embodiment of the present invention.

FIG. 2 is a bottom view of the suction port of the suction device.

FIG. 3 is a sectional view of the main part of the rotor and drive wheels.

FIG. 4 is a cross-sectional assembly view of main parts of the rotor and drive wheels.

FIG. 5 is a cross-sectional view of a suction tool of an electric vacuum cleaner showing a conventional example.

[Explanation of symbols]

 14 Suction Port 15 Suction Chamber 16 Rotor 17 Motor 19 Gear 20 Drive Wheel 21 Shaft

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahiro Kaji 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Hiroyuki Uraya, 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (4)

[Claims] 1. A suction port for sucking dust, a rotor having a gear portion provided in the suction chamber, a motor for driving the rotor through the gear portion, and a pair provided on the left and right sides of the suction port. And a drive wheel of the rotor, the drive wheel being attached to both ends of the rotor so as to rotate integrally, and the suction tool of the electric vacuum cleaner driven integrally by the motor. 2. A suction port for sucking dust and the like, a rotor provided in the suction chamber and having a gear portion, a motor for driving the rotor through the gear portion, and a pair provided on the left and right sides of the suction port. Drive wheels are attached to both ends of the rotor, and one of the drive wheels is provided on the rotor side with respect to the gear part and is integrally driven by the motor. Vacuum cleaner suction tool. 3. The suction tool for an electric vacuum cleaner according to claim 2, wherein the drive wheel is clamped and fixed by a gear portion integrally provided with a shaft and a rotor. 4. A suction port for sucking dust and the like, a rotor provided in a suction chamber having a gear portion, a motor for driving the rotor through the gear portion, and a pair provided on the left and right sides of the suction port. Drive wheels are attached to both ends of the rotor so as to rotate together, and one of the drive wheels is provided on the rotation side with respect to the gear portion, and the gear portion and one drive wheel are adjacent to each other. And a suction tool for an electric vacuum cleaner that is integrally driven by a motor.