JPH1128178A - Suction tool for vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the mouth part of a ventilating path blowing air from being clogged with the fur of a carpet at the suction tool for a vacuum cleaner raking up dust by blowing air to a floor surface. SOLUTION: A bumper 18 made of a soft material is arranged at the outer peripheral part of a suction tool main body 1, a ventilating path 19 made of the soft material in one body with the bumper 18 is formed at the bumper 18 on the front side of the main body 1 to be vertical to a floor surface. By the sucking operation of a cleaner main body, peripheral air is sucked also from the path 19 to collide with the floor surface to rake up dust. Then the mouth part of the path 19 is deformed in the advancing direction and in the opposite direction by the moving forward/backward of the main body 1.

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 a vacuum cleaner, and more particularly to a suction device for a vacuum cleaner having an opening for blowing air to a floor.

[0002]

2. Description of the Related Art Conventionally, there is a method in which a suction airflow from a suction tool collides with a floor surface to scrape up dust in order to improve dust suction performance.

FIG. 17, FIG. 18, FIG. 19, and FIG. 20 are views showing an example of a conventional vacuum cleaner suction tool disclosed in, for example, Japanese Patent Application Laid-Open No. 54-158066, and FIG. 18 is a front view, FIG. 19 is a bottom view, and FIG. 20 is a perspective view. In the drawing, reference numeral 1 denotes a suction tool main body, and a communication pipe 2 connected to a cleaner main body 11 via a hose 12 and a pipe 13 is rotatably attached to a stopper 3. 4
Is a sled provided in front of the suction tool main body 1, has a suction port 5 at the center thereof, and a long groove suction passage 6 is provided on the left and right of the suction port 5. Reference numeral 7 denotes a slit-shaped ventilation passage which communicates with the front of the suction port 5 and the suction passage 6, and is provided independently in the longitudinal direction of the suction tool main body 1. The hole area of the ventilation passage 7 increases as it reaches both ends in the longitudinal direction of the central portion of the suction port 5.

[0004] Reference numeral 8 denotes a bumper made of a cushioning material provided on the outer periphery of the suction tool main body 1, reference numeral 9 denotes a roller provided on the left and right on the bottom surface of the suction tool main body 1, and reference numeral 10 denotes a flocking provided behind the suction port 4.
At the time of cleaning, the back surface of the suction tool main body 1 is prevented from being in contact with the floor surface and being scratched.

When the floor is cleaned with the above-described configuration, the airflows flowing from the lower surface of the sled portion 4 and the slit-shaped ventilation path 7 join and collide with a deep portion of the floor. Since the dust is lifted and sucked by the airflow, the cleaning ability can be improved.

[0006]

In the conventional suction device for a vacuum cleaner constructed as described above, the suction device body 1 is provided.
The suction wind that enters is caused to collide with the floor surface by the ventilation path 7 formed in the suction tool main body 1, and the dust on the floor surface is scraped up by the collision wind to improve the dust suction performance. When the floor surface is carpet, it is necessary to bring the slit-shaped ventilation path 7 close to the carpet hair in order to scrape out dust that has entered the carpet hair.

However, when the ventilation passage 7 is formed in the suction device main body 1 as a conventional case member, the suction device main body 1 is a rigid body, so that when the outlet of the ventilation passage 7 is brought close to the carpet, Since the length of the hair differs depending on the type, the opening of the ventilation hole 7 may be blocked, and there is a problem that sufficient scraping performance cannot be obtained.

The present invention has been made in order to solve the above-mentioned problems. In order to improve the effect of scraping dust from the interior of the carpet in the ventilation path 7 where a collision wind is generated, the ventilation path 7 is brought closer to the carpet. It is possible to always obtain a stable scraping performance without blocking the ventilation path even for carpets of various bristle lengths.

[0009]

A suction tool for a vacuum cleaner according to the present invention includes a suction tool body connected to a cleaner body via a connecting pipe, and the communication pipe formed in front of a bottom surface of the suction tool body. And a bumper made of a soft material provided on the outer periphery of the suction tool main body, and formed of a soft material and provided integrally with the bumper, hanging down to the cleaning surface side from the bumper, and air at an upper portion. And a ventilation path provided with an inlet and a spout on the cleaning surface side.

In addition, a skirt portion is provided on a wall surface of the ventilation path on the bumper side, the skirt portion hanging down at a position so as to come into contact with a cleaning surface.
The outlet changes in response to the movement of the skirt.

Further, a rib is provided between the skirt portion and the ejection port.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. FIG. 1 is a side sectional view showing the internal structure of a vacuum cleaner suction tool according to Embodiment 1 of the present invention, FIG. 2 is a top view, FIG. 3 is a front view, and FIG. 4 is a bottom view. In the figure, the same or corresponding parts as in the conventional example are denoted by the same reference numerals, and description thereof will be omitted. The vacuum cleaner main body 11, the hose 12, and the pipe 13 are provided substantially at the center of the suction tool main body 1 as in the conventional example.
It is assumed that a communication pipe 2 connected through the connection is provided.

In the drawing, reference numeral 14 denotes an upper case of the suction tool main body 1, and 15 denotes a lower case. Reference numeral 16 denotes a partition wall provided at a central portion in the longitudinal direction inside the suction tool main body 1, and a suction chamber 1
It is 7. The suction port 4 is formed in the suction chamber 17 of the lower case 15. Reference numeral 18 denotes a bumper disposed on the outer peripheral portion of the suction tool main body 1, which is formed of a soft material so as not to be damaged when hitting a wall, furniture, or the like. Reference numeral 19 denotes an air passage formed of a soft material, which is formed integrally with the bumper 18. 19a is ventilation passage 19
Air inlet formed on the upper surface side of the suction tool main body 1, 19b
Denotes a spout provided on the cleaning surface side. Reference numeral 20 denotes a raised cloth roller in which a raised cloth is adhered to the outer periphery, and is disposed behind the suction port 5. A torque limiter for restricting rotation is built in the bearing portion of the brushing cloth roller 20-. When the plate floor is used, the rotation is slower than the moving speed of the suction tool main body 1 so that a wiping function can be obtained.

As shown in FIGS. 1, 2, and 3, a plurality of ventilation passages 19 are provided, and are formed at the front side of the suction tool main body 1 perpendicular to the floor surface. The cross-sectional shape of the ventilation path 19 may be any shape such as a circle, a square, and a long hole. Also,
The ventilation passages of each ventilation passage 19 may have an independent shape or a shape in which a plurality of ventilation passages are united.

With the suction operation of the main body of the cleaner, the surrounding air is sucked together with the dust on the floor from the suction port 5 of the main body 1 of the suction tool. At that time, the surrounding air is also sucked from the ventilation passage 19 on the front surface of the suction tool main body 1, and the suction air is guided to the ventilation passage 19 and collides with the floor surface. Flow into

However, in order to sufficiently bring out the performance of the dust scraping function, it is necessary to bring the opening of the ventilation path 19 on the floor side closer to the floor with dust. Therefore, a description will be given with reference to FIGS. FIG. 5 shows the suction tool body 1
FIG. 6 is a view showing a state where the suction tool main body 1 is moved forward, and FIG. 7 is a view showing a state of the ventilation path 19 when the suction tool main body 1 is moved forward. It is a figure showing the state of.

As shown in FIG. 1, according to the first embodiment,
Since the ventilation path 19 is formed of a soft material, when the suction tool main body 1 is moved forward and backward, the ventilation path 19 is bent in a direction opposite to the traveling direction of the suction tool main body 1 due to the resistance of the carpet. Due to this deformation, the floor portion of the ventilation path 19 on the floor surface comes out on the carpet hair, so that the opening of the ventilation path 19 can be prevented if the suction tool main body 1 is operated back and forth. Therefore, the suction air that has passed through the ventilation path 19 can always collide with dust in the carpet hair and be lifted up.

Embodiment 2 FIG. FIG. 8 is a sectional view showing a suction device for a vacuum cleaner according to Embodiment 2 of the present invention, FIG. 9 is a front view, and FIG. 10 is a bottom view. In the figure, the first embodiment
The same or corresponding components are denoted by the same reference numerals and description thereof will be omitted. Reference numeral 21 denotes a skirt portion in which the side wall surface of the bumper 18 of the ventilation path 19 is hung so as to substantially contact the floor surface.

The skirt portion 21 is configured to maintain a negative pressure at the suction port 5 with a certain gap between the floor surface and the suction tool main body 1 on the plate-like floor surface. Moreover, on a carpet, it is comprised so that it may enter into the hair of a carpet.

FIG. 11 is a view showing a state where the suction tool main body 1 is placed on a carpet, FIG. 12 is a view showing a state where the suction tool main body 1 is moved forward, and FIG. FIG. According to the second embodiment, when the suction tool main body 1 is moved forward and backward on the carpet, the skirt portion 21 is bent in a direction opposite to the traveling direction of the suction tool main body 1 due to the resistance of the carpet. The ventilating passage 19 which is formed in a uniform manner is also deformed in the same direction. That is,
The advancing direction of the suction tool main body 1 is detected by the skirt portion 21 and the ventilation path 19 is deformed. Thereby, the floor side opening of the ventilation path 19 is not blocked, and the performance of scraping up the ventilation path 19 by the collision wind can be maintained.

Embodiment 3 FIG. 14 is a diagram showing an internal structure of a vacuum cleaner suction tool according to Embodiment 3 of the present invention,
FIG. 15 is a view showing a state in which the suction tool main body is advanced on a carpet, and FIG. 16 is a bottom view. In the figure, the same components as those of the first and second embodiments are denoted by the same reference numerals, and description thereof is omitted. Reference numeral 22 denotes a reinforcing rib connecting the skirt portion 21 and the ventilation path 19.

According to the third embodiment, the deformation of the skirt portion 21 caused by the forward and backward movements of the suction tool main body 1 on the carpet can be reliably transmitted to the ventilation path 19 by the reinforcing ribs 22.

[0023]

As described above, even if the opening on the floor surface becomes buried in the carpet, the ventilation path is deformed due to the resistance of the carpet in the air passage for obtaining the impinging wind on the floor. The mouth on the floor side is always on the carpet, and the air path is secured, so that the performance of scraping the floor surface by the wind passing through the air path can be maintained.

Further, the traveling direction of the suction tool is detected by the suspended skirt portion, and the ventilation path is deformed, so that it is possible to prevent the floor-side mouth from being closed by the carpet.

Further, since the interlocking property between the skirt portion and the ventilation path is improved by the reinforcing ribs, the air path at the mouth of the ventilation path can be reliably secured.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an internal structure of a vacuum cleaner suction tool according to Embodiment 1 of the present invention.

FIG. 2 is a top view of the vacuum cleaner suction tool according to the first embodiment.

FIG. 3 is a front view of the suction tool for a vacuum cleaner according to the first embodiment.

FIG. 4 is a bottom view of the suction tool for a vacuum cleaner according to Embodiment 1.

FIG. 5 is a diagram showing a state of the suction device for a vacuum cleaner according to Embodiment 1 on a carpet.

FIG. 6 is a diagram showing a state in which the suction device for a vacuum cleaner according to Embodiment 1 is advanced on a carpet.

FIG. 7 is a diagram showing a state in which the suction device for a vacuum cleaner according to the first embodiment moves backward on a carpet.

FIG. 8 is a cross-sectional view showing an internal structure of a vacuum cleaner suction tool according to Embodiment 2 of the present invention.

FIG. 9 is a front view of the vacuum cleaner suction tool according to the second embodiment.

FIG. 10 is a bottom view of the vacuum cleaner suction tool according to the second embodiment.

FIG. 11 is a diagram showing a state on a carpet of a vacuum cleaner suction tool according to a second embodiment.

FIG. 12 is a diagram showing a state in which the suction device for a vacuum cleaner according to Embodiment 2 is advanced on a carpet.

FIG. 13 is a diagram showing a state in which the suction device for a vacuum cleaner according to the second embodiment moves backward on a carpet.

FIG. 14 is a cross-sectional view showing an internal structure of a vacuum cleaner suction tool according to Embodiment 3 of the present invention.

FIG. 15 is a diagram showing a state in which the suction device for a vacuum cleaner according to Embodiment 3 is advanced on a carpet.

FIG. 16 is a bottom view of the vacuum cleaner suction tool according to the third embodiment.

FIG. 17 is a side sectional view showing the internal structure of a conventional vacuum cleaner suction tool.

FIG. 18 is a front view of a conventional suction device for a vacuum cleaner.

FIG. 19 is a bottom view of a conventional suction tool for a vacuum cleaner.

FIG. 20 is a perspective view of a conventional vacuum cleaner suction tool.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Suction tool main body, 2 communication pipe, 5 suction port, 6 suction passage, 7 ventilation path, 8 bumper, 11 vacuum cleaner main body, 1
2 Hose, 13 pipe, 18 bumper, 19 ventilation path, 21 skirt, 22 reinforcing rib.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Satoru Koto 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Inside Mitsubishi Electric Corporation (72) Inventor Eiji Yamauchi 2-6-1, Otemachi, Chiyoda-ku, Tokyo (72) Inventor Kiyoshi Yagida 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Inside Mitsubishi Electric Corporation

Claims (3)

[Claims] 1. A suction tool main body connected to a cleaner body via a connecting pipe, a suction port formed in front of a bottom surface of the suction tool main body and communicating with the communication pipe, and provided on an outer periphery of the suction tool main body. And a ventilation passage formed of a soft material, provided integrally with the bumper, hanging down from the bumper to the cleaning surface side, providing an air intake port at an upper portion, and providing a jet port at the cleaning surface side. And a suction tool for a vacuum cleaner. 2. A method according to claim 1, wherein a skirt portion is provided on a wall of the ventilation path on the bumper side so as to be in contact with a cleaning surface, and the ejection port is changed in accordance with the movement of the skirt portion. Item 6. A suction device for a vacuum cleaner according to Item 1. 3. The suction tool for an electric vacuum cleaner according to claim 2, wherein a rib is provided between the skirt portion and the ejection port.