JPH0542074A - Floor brush for electric cleaner - Google Patents

Abstract

PURPOSE:To rake out dirt effectively without increasing a driving force regardless of irregularities of a carpet for a floor brush of an electric cleaner with a rotary brush and an electric motor for rotating the rotary brush. CONSTITUTION:A first blade piece 16 having a width W1 and height H1 and a second blade piece 17 in which a width W2 is smaller than the width W1 of the first blade piece 16 and a height H2 is smaller than the height H1 of the first blade piece 16 are arranged alternately to form a blade 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor brush for an electric vacuum cleaner.

[0002]

2. Description of the Related Art FIG. 2 is a perspective view showing the overall construction of an electric vacuum cleaner. In the figure, 1 is a floor brush, 2 is an extension pipe, 2a is a hand pipe, 2b is a remote control switch, 3 is a hose made of elastic material such as rubber, 4 is a cleaner body with a built-in electric blower, and 5 is a power cord. is there.

Next, this operation will be described. After connecting the power cord 5 to the power source, hold the hand pipe 2a, press the remote control switch 2b to drive the electric blower in the cleaner body 4, and remove the floor brush 1 fitted to the tip of the extension pipe 2. If it slides along the floor surface, the dust on the floor surface is sucked into the cleaner body 4 through the floor brush 1, the extension pipe 2 and the hose 3 together with the air, and is installed inside the cleaner body 4. It is designed to be collected by a dust filter in the shape of a paper bag.

FIG. 3 is a perspective view of the floor brush 1. The elbow 6 is axially fixed to the rear center portion as shown by an arrow A so as to be vertically movable.
And is connected to the extension pipe 2 via the elbow 6. At this time, the tilt angle of the floor brush 1 with respect to the extension pipe 2 is freely changed by rotating the elbow 6 up and down, so that the lower surface of the floor brush 1 is easily brought into close contact with the floor surface.

FIG. 4 is a plan view of the inside of the floor brush 1, and a part thereof is shown in a sectional view. As shown, the elbow 6 is the floor brush 1
A hollow rotating shaft 6e is inserted and fitted in the rear central part of the floor brush 1 so as to be vertically movable. Reference numeral 7 is a rotary brush, 8 is a belt, 9 is an electric motor, and the rotation of the electric motor 9 is transmitted to the rotary brush 7 by the belt 8. Reference numeral 10 is a control device for the electric motor 9, and 11 is a control device 1.
It is a power supply intake part that takes in power to 0. Reference numeral 6a is a cylindrical portion of the elbow 6, 6b is a pipe expanding portion which is fitted into the elbow 6, and 6c is a fitting portion which is connected to the extension pipe 2.
The rotating shaft 6e is formed of a hollow pipe that passes through the center of the cylindrical portion 6a and penetrates both side walls and projects to both sides.

Next, this operation will be described. When the bottom surface of the floor brush 1 is brought into close contact with the floor surface, the remote control switch 2b is operated, the electric vacuum cleaner body 4 is operated to absorb dust, and when the floor surface is covered with a carpet or the like, the power is further supplied. A signal is sent to the control device 10 through the intake portion 11 to drive the electric motor 9, and the rotation of the electric motor 9 is transmitted to the rotary brush 7 by the belt 8 to rotate it. In this way, it is also effective for cleaning carpets and the like.

FIG. 5 is a perspective view showing an example of the rotary brush 7 disclosed in Japanese Patent Publication No. 63-35246, and FIG. 6 is an explanatory view showing a state at the time of cleaning. In the figure, 11 is a shaft, 14 is a blade, and 14a is a blade 1.
It is a small protrusion provided on No. 4. By operating the floor brush back and forth on the carpet 15 while rotating the rotary brush 7, dust on the carpet is scraped out,
It is sucked into the cleaner body 4. In addition, 15a shows the fluff of the carpet.

[0008]

In the floor brush of the conventional electric vacuum cleaner as described above, when the rotary brush 7 is rotated to clean the carpet, the small projections 14a make the hairs 15
There is a problem in that a large driving force is required to rotate the rotary brush 7 because the resistance is increased because of being caught by a.

The present invention has been made in order to solve the above problems, and the blades are alternately arranged with blades having different widths and heights. The purpose is to obtain a floor brush that can scrape out garbage.

[0010]

A floor brush for an electric vacuum cleaner according to the present invention has a first blade piece having a predetermined width and height, and a width smaller than the width of the first blade piece and having a height smaller than that of the first blade piece. The blades of the rotary brush are configured by alternately arranging the second blade pieces smaller than the height of the first blade pieces.

[0011]

In the present invention, the first blade and the second blade are alternately arranged to form the blade, so that the blade tip has an uneven shape. Therefore, even if there are irregularities on the carpet, the blade enters along these irregularities.

[0012]

【Example】

Example 1. FIG. 1 is a front view showing a rotary brush in one embodiment of the present invention, and 16 is a first blade piece, which is made of rubber or other flexible elastic material,
The width is W ₁ and the height is H ₁ . 17
Is a second blade piece formed of the same material as the first blade piece 16 and has a width W ₂ much smaller than the width W ₁ of the first blade piece 16 and a height H ₂ of the first blade piece 16. It is smaller than the height H ₁ of the blade piece 16. As shown in the figure, the first blade piece 16 and the second blade piece 17 are alternately fixed to the shaft body 11 in a row with a slight gap G to form one blade. Further, although two blades are fixed at symmetrical positions of the shaft body 11, four or more blades may be radially provided.

Although each blade piece has the width and height as described above, the diameter D ₁ of the _first blade piece 16 and that of the second blade piece 17 are considered when the shaft body 11 is included. The relationship between the diameter D ₂ and the diameter D ₃ of the shaft body 11 is D ₁ >.
D ₂ > D ₃ . Here, the diameter of the blade piece refers to the diameter of the blade piece with the diameter of the cylinder assuming a cylinder in which the blade piece is inscribed.

In this embodiment, since the blade is constructed as described above, the tip shape of the blade has unevenness, and when the rotary brush 7 is rotated, even if there is unevenness on the carpet, The blade enters along these irregularities, and the dust can be effectively scraped out without increasing the driving force. As an example of the carpet having irregularities, there is a monochromatic one with a pattern depending on the length of the fluff. In addition, unevenness occurs where people walk often.

In the above-mentioned embodiment, the blade is provided in a straight line shape, but a spirally provided blade has the same effect. Further, the shaft body 11 and the blade pieces 16 and 17 can be integrally formed.

[0016]

As described above, according to the present invention, the first blade piece having a predetermined width and height, and the width smaller than the width of the first blade piece and the height smaller than the height of the first blade piece. Since the blades are configured by alternately arranging the small second blade pieces, the tip shape of the blade has irregularities, and even if there are irregularities on the carpet, the blades enter along this irregularity and drive. It has the effect of removing trash without increasing the force.

[Brief description of drawings]

FIG. 1 is a front view showing a rotary brush according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the configuration of the entire electric vacuum cleaner.

FIG. 3 is a perspective view of a floor brush.

FIG. 4 is an internal plan view of the floor brush.

FIG. 5 is a perspective view showing a conventional rotary brush.

FIG. 6 is an explanatory view showing a state at the time of cleaning with a conventional rotary brush.

[Explanation of symbols]

 1 Floor Brush 7 Rotary Brush 9 Electric Motor 11 Shaft Body 14 Blade 16 First Blade Piece 17 Second Blade Piece

Claims (1)

[Claims] 1. A floor brush of an electric vacuum cleaner, comprising a rotary brush rotatably arranged in a case, a blade attached to a shaft body, and an electric motor for rotating the rotary brush. And a second blade piece having a width smaller than the width of the first blade piece and a height smaller than the height of the first blade piece.
2. A floor brush for an electric vacuum cleaner, wherein the blade pieces and the second blade pieces are alternately arranged to form a blade.