JPH04285521A - Suction port body of electric vacuum cleaner - Google Patents

Abstract

PURPOSE:To provide the suction-port body of an electric vacuum cleaner in which the rotating driving force of a drive rope or driving wheel can be sufficiently effectively utilized, even if the cleaning surface is a carpet or the like. CONSTITUTION:In the suction-port body of an electric vacuum cleaner comprising a suction port body 1 in which a suction chamber 7 opened below is provided on the front side, front wheels 13, rear wheels 14, and driving wheels 16 which have been provided in the suction port body 1, and a motor 17 (not shown) for driving the driving wheels 16 that has been provided inside the suction port body 1; a driving-wheel chamber 8 which is provided at the rear periphery of the suction port and is opened below is formed in the vicinity of the suction chamber 7 of the suction port body 1, and the driving wheels 16 are arranged in the driving-wheel chamber 8.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction spout body for a vacuum cleaner, which is provided with a drive wheel which is driven by a driving means such as a motor to drive and drive the suction spout body.

0002

2. Description of the Related Art A vacuum cleaner equipped with this type of suction port has a drive roller (drive wheel) driven by an electric motor, as disclosed in Japanese Patent Laid-Open No. 2-7923, for example.
There is one in which the floor suction device (suction port body) is driven and travels.

0003

[Problems to be Solved by the Invention] However, in the past, the drive roller was simply brought into contact with the cleaning surface by the weight of the floor suction tool, so when the cleaning surface was a carpet, etc., the cleaning surface of the drive roller The adhesion to the roller was poor, and the rotational driving force of the drive roller was not effectively utilized.

SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a suction port body for a vacuum cleaner that can fully and effectively utilize the rotational driving force of a drive roller, that is, a drive wheel, even if the surface to be cleaned is a carpet or the like. It is.

[0005]

[Means for Solving the Problems] In order to achieve this object, the invention of claim 1 provides a suction port body provided with a suction chamber opening downward on the front side, and a suction port body provided in the suction port body. In a vacuum cleaner suction body comprising a running wheel, a drive wheel, and a drive means provided in the suction mouth body to drive the drive wheel, a suction chamber side of the suction mouth body is provided near the suction chamber of the suction mouth body. The present invention is characterized in that a driving wheel chamber opening downward is formed, and the driving wheel chamber is used as a suction port body of a vacuum cleaner in which the driving wheel is disposed.

[0006] In the invention according to claim 2, in the invention according to claim 1, a rotary cleaning body is rotatably held in the suction chamber in a longitudinal direction, and a bottom wall of the suction port body is An entrainment prevention wall is formed in the drive wheel to partition the suction chamber and the lower part of the drive wheel chamber.

[0007]

[Function] According to such a configuration, when cleaning a cleaning surface such as a carpet, the intake negative pressure acting on the suction chamber acts on the drive wheel chamber and sucks the carpet etc. into the drive wheel chamber. , the carpet is pressed against the drive wheels using negative pressure to make them adhere tightly.

[0008] Furthermore, even if a carpet or the like is sucked into the suction chamber and the drive wheel chamber side by this intake negative pressure and lifted, the entrapment prevention wall prevents the carpet or the like from getting caught between the rotating cleaning body and the drive wheel. will be prevented.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 to 3, 1 is the suction port body, 2
is a connecting pipe attached to the suction port body 1.

The suction port body 1 includes a lower case 3 and an upper case 4 detachably attached to the lower case 3. In the figure, 3a is the front wall of the lower case 3. Further, in the front part of the bottom wall 1a of the suction port body 1, a rectangular opening 5 (Fig. 1
, 3, 5, and 6), and wheel insertion openings 1b, 1b are formed in the vicinity of the square opening 5 of the bottom wall 1a at intervals on the left and right.

The upper part of the wheel insertion openings 1b, 1b is covered with an inner case 6, and the inner case 6 and the case 3 are covered with an inner case 6.
, 4, a suction chamber 7 communicating with the connecting pipe 2 is formed. Further, inside the inner case 6, a suction chamber 7 and driving wheel chambers 8, 8 opening downward are formed located above the wheel insertion openings 1b, 1b. Furthermore, an entrainment prevention wall 9 is formed on the bottom wall 1a to partition the suction chamber 7 and the drive wheel chamber 8.

[0013] Inside the suction chamber 7 is an agitator 1 extending left and right.
0 is installed as a rotating cleaning body. This agitator 10 has a rotating shaft 11 whose both ends are rotatably held in the suction port main body 1, and a flexible strip 12 which is helically planted and fixed on the outer peripheral surface of the rotating shaft 11.

Front wheels 13 are rotatably mounted as running wheels on both sides of the front end of the bottom wall 1a, and rear wheels 14 are rotatably mounted as running wheels on both sides of the rear end of the bottom wall 1b.

Drive wheels 16, 16 held by a drive shaft 15 are disposed within the drive wheel chamber 8. The drive shaft 15 is rotatably held in the suction port body 1 in parallel with the agitator 10. This drive wheel 16 protrudes from the bottom wall 1a, and the lower end of this drive wheel 16 is connected to the front wheel 13 and rear wheel 14.
A small gap is formed between the imaginary plane connecting the lower ends of .

A motor 17 as a driving means is mounted inside this suction port body 1, and gears 18 and 19 are fixed to the output shaft 17a of the motor 17 and one end of the agitator 10, respectively. A timing belt 20 is stretched around it. Further, the outer peripheral surface of the timing belt 20 is brought into elastic contact with a pulley 21 fixed to one end of the drive shaft 15. Thereby, when the motor 17 operates, the agitator 10 and the drive wheel 16 rotate in opposite directions. Note that 21 is a tension pulley for pressing the timing belt against the pulley 21.

Next, the function of the suction port body of the vacuum cleaner constructed as described above will be explained.

According to such a configuration, when cleaning a cleaning surface such as a carpet, the intake negative pressure acting on the suction chamber 7 acts on the drive wheel chamber 8, and moves the carpet or the like toward the drive wheel chamber 8 side. This causes the carpet to be pressed against the drive wheels 16 with negative pressure and brought into close contact with the drive wheels 16.

When the motor 17 is operated in this state, the rotation of the motor 17 is transmitted to the agitator 10 via the gears 18, 19 and the timing belt 20, and
8, timing belt 20, drive shaft 15 and pulley 21
The signal is transmitted to the drive wheels 16 via the .

As a result, the suction port main body 1 is driven forward or backward by the drive wheels 16, and the agitator 1
0 is rotated. At this time, the drive wheel 16 and the agitator 10 are rotated in opposite directions.

Further, when the suction port main body 1 travels in this manner, the carpet, etc. is sucked into the suction chamber 7 and the drive wheel chamber 8 side by the negative intake pressure and lifted, and the drive wheel 16 and the agitator 10 move the carpet, etc. Even if the carpet rotates in the winding direction, the winding prevention wall 9 prevents the carpet or the like from winding up between the agitator 10, which is a rotating cleaning body, and the drive wheel 16.

[0022]

[Effect] As explained above, the invention of claim 1 provides a suction port main body in which a suction chamber opening downward is provided on the front side;
In the suction mouth body of a vacuum cleaner, the suction mouth body of the vacuum cleaner includes a running wheel and a driving wheel provided in the suction mouth body, and a driving means provided in the suction mouth body and driving the driving wheels. A drive wheel chamber that opens downward on the suction chamber side is formed near the chamber, and the drive wheel is disposed in the drive wheel chamber, so even if the surface to be cleaned is a carpet, etc., it can be cleaned easily. At times, the negative intake pressure can bring the driving wheels into close contact with the carpet, etc., and as a result, the rotational driving force of the driving wheels can be used effectively.

In the invention of claim 2, in the invention of claim 1, a rotary cleaning body is rotatably held in the suction chamber in the longitudinal direction, and the bottom wall of the suction port body is Since the structure is such that an entrapment prevention wall is formed to partition the suction chamber and the lower part of the drive wheel chamber, the carpet, etc. is sucked toward the suction port and the drive wheel chamber side by this intake negative pressure, and is lifted up. Even if the carpet or the like is caught between the rotary cleaning body and the drive wheel, the entrapment prevention wall reliably prevents the carpet or the like from being caught between the rotating cleaning body and the drive wheel.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional view showing essential parts of the invention.

FIG. 2 is an explanatory diagram showing the relationship between a drive means, an agitator, and a drive wheel of the present invention.

FIG. 3 is a plan view of the lower case shown in FIGS. 1 and 2. FIG.

FIG. 4 is a longitudinal sectional view of a portion along the drive shaft shown in FIG. 3;

FIG. 5 is a perspective view of the lower cover side shown in FIG. 1 with the upper cover removed.

FIG. 6 is a partially exploded perspective view of FIG. 5;

7 is an enlarged perspective view of the main part of FIG. 5. FIG.

[Explanation of symbols]

1...Suction port body 7...Suction chamber 8...Drive wheel chamber 9...Entanglement prevention wall 10...Agitator (rotating cleaning body) 16...Drive wheel 17...Motor (driving means)

Claims (2)

[Claims] 1. A suction port main body in which a suction chamber opening downward is provided on the front side, a running wheel and a driving wheel provided in the suction port main body, and a driving wheel provided in the suction port main body and the driving wheel provided in the suction port main body. In the suction port body of a vacuum cleaner including a drive means for driving a wheel, a drive wheel chamber that opens downward on the suction chamber side is formed near the suction chamber of the suction port body, and the drive wheel chamber is provided with the drive wheel chamber. A suction port body for a vacuum cleaner characterized by being provided with a driving wheel. 2. A rotary cleaning body is rotatably held in the suction chamber in the longitudinal direction, and a bottom wall of the suction port body includes the suction chamber and a lower part of the drive wheel chamber. The suction port body for a vacuum cleaner according to claim 1, further comprising a dividing wall for preventing entrainment.