JPH119521A - Floor suction nozzle for electric vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor suction nozzle for a vacuum cleaner whose operating load is decreased and operability is improved without generating noise and degrading the capability of scraping lints. SOLUTION: The floor suction nozzle is furnished with a main body 1 having a suction port 3 in the underside, a rotating brush 6 that is made to front the suction port 3 and supported rotatably by the suction hood 1, wheels 5a, 5b supported by the suction hood 1 rotatably, a transmission mechanism (gear mechanism 14, transmission belt 15) that rotates the rotating brush 6 normally and reversely in association with the rotation of the wheels 5a, 5b, and a projection tilting in one direction is formed on an elastic body arranged on the rotating brush spirally (lint removing brush 7) and a fixed brush 9 having many projections tilting in one direction is provided on the suction port 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor suction device for a vacuum cleaner, and more particularly to a brush for scraping lint (including lint-like hair, etc.) which is entangled on a carpet and cannot be removed by suction alone. The present invention relates to a floor suction tool.

[0002]

2. Description of the Related Art There is known a carpet provided with a rotary brush which is driven by an electric motor at a suction port of a floor suction tool in order to scrape lint and the like entangled with the hairs of a carpet. There is a drawback that the weight of the tool body becomes heavy, operability at the time of cleaning deteriorates, and the rotating brush rotates at high speed, so that noise is generated and the user feels discomfort.

Further, there is a type in which a turbo fan is rotated by a flow of air to be sucked and a rotary brush is driven by the turbo fan. In this configuration, the rotary brush is driven to rotate with the recent increase in power. Since the turbo fan rotates at high speed and the rotating brush rotates at high speed, there is a disadvantage that noise is generated.

[0004] On the other hand, there is also known an apparatus in which a planar lint removing brush is provided on the bottom surface of a suction tool main body without using a rotating brush. In this lint removing brush (generally called an etiquette brush), each brush projection is attached to be inclined in one direction in order to scrape lint entangled on the carpet. As a conventional configuration example of a floor suction tool having such a lint removing brush, Japanese Utility Model Application Laid-Open No. 62-8615 is known.
As disclosed in Japanese Patent Application Publication No. 2 (1993) -210, a plate-like lint removing brush is provided before and after the suction port.

[0005] In order to scrape off the lint remaining in the suction port, these lint removing brushes are attached to the front and rear sides of the suction port so that the brush projections are inclined to the suction port side.

Therefore, when the floor suction device is operated forward, the lint removal brush attached to the rear side of the suction opening scrapes the lint remaining in the suction opening. The lint removal brush attached to the front side of the suction port scrapes the lint remaining in the suction port. The lint that has been scraped off in this way and adhered to each lint removal brush is removed by removing the lint attached to the front lint removal brush when the floor suction device is operated forward. When operating backward, the lint attached to the lint-removing brush on the rear side comes off and is sucked through the suction port.

[0007]

However, in such a conventional floor suction device, when operating the floor suction device, a lint-removing brush whose brush projections are inclined in the advancing direction is in contact with a carpet or the like. Because of the contact, the contact resistance increases, and the operating load when operating the floor suction tool increases, resulting in a problem that the operability deteriorates.

Accordingly, the present invention has been made to solve such a problem, and it is possible to generate noise,
It is an object of the present invention to provide a floor suction device for a vacuum cleaner having an improved operability by reducing the operation load without reducing the performance of scraping lint.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a suction tool main body having a suction port on a lower surface, and a rotatable support for the suction tool main body facing the suction port. A rotating brush, a wheel rotatably supported by the suction tool main body, and a transmission mechanism for rotating the rotating brush forward and backward with the rotation of the wheel, and the spirally disposed rotating brush is disposed on the rotating brush. A projection that is inclined in one direction is formed on the elastic body, and a fixed brush that has a number of projections that are inclined in one direction is provided in the suction port.

Further, the transmission mechanism reverses the rotational power from the wheels and transmits the rotational power to the rotating brush.

Further, the brush projection spirally formed on the rotating brush is formed so as to be inclined so as to face rearward when coming into contact with the floor surface.

The fixed brush is provided linearly on the rear wall side of the suction port, and the brush projection is formed in the same direction as the brush projection when in contact with the rotating brush, and is inclined in the suction direction. It is characterized by that.

Further, in the elastic body spirally disposed on the rotating brush, the rotating radius changes due to centrifugal force accompanying the rotation of the rotating brush, and the brush projection contacts the floor surface and the fixed brush only during rotation, When stopped, a certain space is formed between the brush projection and the floor surface and the fixed brush.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1, 2 and 3 show an embodiment of a floor suction tool when the present invention is applied to a floor-moving general vacuum cleaner, and FIG. 1 shows an upper case thereof. FIG. 2 is a side cross-sectional view also illustrating the operation, and FIG. 3 is an enlarged cross-sectional view of the rotating brush.

The floor suction device 1 has a suction port 3 formed on the front side of a main case 2 composed of an upper case 2a and a lower case 2b and extending over substantially the entire lower surface of the main case 2. On the other hand, a connecting pipe 4 that communicates with the suction port 3 and that is inserted into a telescopic pipe connected to the cleaner body (not shown) is rotatably attached to the center of the rear side of the main body case 2. Wheels 5a and 5b for reducing the operation force when cleaning the floor with the suction tool 1 are attached to both sides on the rear side.

A rotary brush 6 is built in the suction port 3. Four lint removing brushes 7 made of an elastic material and made of a hollow material such as a synthetic resin are spirally attached to the rotating brush 6. These lint removal brushes 7
Are mounted so that the base 7a of each lint removing brush 7 is inserted into four dovetail grooves 8a spirally formed in the rotating body 8 at equal intervals. Each of the brush projections 7b formed on the head of each lint removing brush 7 is formed so as to be inclined so as to face one direction, here, the rear side when coming into contact with the floor surface (carpet).

On the inclined surface of the lower case 2 b located on the rear wall side of the suction port 3, a fixed brush 9 for scraping off the lint attached to the lint removing brush 7 is provided over the entire length of the suction port 3. Mounted in a straight line. The fixed brush 9 is formed on a substrate 9a such that each brush projection 9b is inclined in a direction corresponding to the inclination direction of the brush projection 7b of the lint removing brush 7. This inclination direction is upward as shown in FIG. 3 and corresponds to the suction direction.
The lint attached to the fixed brush 9 is easily detached by the suction force.

The rotating brush 6 has rotating shafts 10a and 10b projecting from both ends of a rotating body 8 fitted into bearings 11a and 11b formed on both ends of the suction port 3, and is rotatably mounted. I have. A pulley 12 on which a transmission belt described later is hung is attached to one of the rotating shafts 10a.

On the other hand, the rotating shaft 13a of the wheel 5a on the same side is provided with a gear mechanism 14 for reversing the rotational power of the wheel 5a and transmitting it to the rotating brush 6. The gear mechanism 14 is composed of a bevel gear train, and includes a drive gear 14a fixed to the shaft end of the axle 13a, a driven gear 14b rotatably mounted on the wheel 5a of the axle 13a, and a driven gear 14b interposed therebetween. And a transmission gear 14c for reversing the rotation direction. A pulley portion 14d slightly larger in diameter than the pulley 12 on the rotary brush 6 side is formed on the outer periphery of the driven gear 14b.
A transmission belt 15 is hung on the pulley 12. Thus, the rotating brush 6 is configured to rotate in a direction opposite to the wheel 5a at a low speed that is slightly faster than the wheel 5a, and almost no noise is generated by the rotation of the rotating brush 6.

The operation of sucking lint on a carpet using the floor suction tool 1 configured as described above will be described with reference to FIG.

As shown in FIG. 2 (a), when the lint 21 on the carpet 20 is retracted by pulling the floor suction tool 1 forward as shown by a solid line arrow, the direction is opposite to the direction of travel. That is, as shown by a dotted line arrow, the lint is removed by the lint removing brush 7 of the rotating brush 6 which rotates counterclockwise.

The lint 21 thus scraped off is removed from the lint removal brush 7.
However, as shown in FIG. 2B, when the floor suction tool 1 is pushed forward as shown by the solid line arrow, the rotating direction of the rotating brush 6 changes and the clock becomes as shown by the dotted line arrow. Direction, the lint 2 adhered to the lint removal brush 7
1 is scraped off by a fixed brush 9 provided on the rear wall of the suction port 3. At this time, the scraped thread waste 21 is sucked into the cleaner body by suction or the fixed brush 9
Adheres to

The thread waste 21 adhered to the fixed brush 9 is also shown in FIG.
As shown in (c), when the floor suction tool 1 is pulled again (shown by a solid line arrow), when the lint removing brush 7 tries to scrape off by rotating the rotating brush 6 (shown by a dotted line arrow), suction is performed. Is sucked into the vacuum cleaner body.

During the above, the contact between the lint removing brush 7 of the rotating brush 6 and the carpet 20 and the fixed brush 9 is all point-like, so that the brush projection 7b is provided to be inclined in one direction. However, the contact resistance is reduced. Therefore, the force required for operating the floor suction tool 1 is small, and the operability is improved without lowering the lint scraping performance.

The driving source of the rotating brush 6 is the wheel 5
Since a is used, the rotation speed of the rotating brush 6 is not so high, and there is no problem of generating noise. In addition, since the rotating power from the wheels 5a is inverted and transmitted to the rotating brush 6, the rotating brush 6 rotates in the direction opposite to the traveling direction of the floor suction tool 1, so that the rotating speed of the rotating brush 6 is too high. Even if it is not, the relative speed with respect to the floor surface (the carpet 20) increases, and the lint 21 can be scraped off efficiently.

The protrusion 7b of the lint removing brush 7 spirally attached to the rotating brush 6 is provided on the floor (carpet 20).
Is formed so as to face rearward when it comes into contact with, the scraped thread waste 21 is sent in the suction direction and is easily sucked.

Further, since the fixed brush 9 for scraping the lint 21 adhered to the lint removing brush 7 is provided, the lint 21 adhered to the lint removing brush 7 is surely removed and suctioned to the cleaner body side. Can be done. For this reason, the problem that the thread waste 21 is entangled with the rotating brush 6 and cannot be removed is eliminated.

FIG. 4 is a side sectional view showing another embodiment of the present invention, in which the same reference numerals as those of the above-mentioned embodiment indicate the same or corresponding parts.

The lint removing brush 70 of the present embodiment is formed using a member whose rotation radius changes due to centrifugal force at the time of rotation of the rotating brush 60, specifically, an elastic member made of synthetic rubber or the like. In addition, in order to make it more susceptible to the effect of the centrifugal force, in the above-described embodiment, four narrow thread waste brushes 7 are attached to the rotating brush 6,
The two are wide.

That is, the respective mounting bases 70a formed on both sides of the wide elastic member are inserted and mounted in the two dovetail grooves 8a of the rotating body 8 similar to the above embodiment. As shown in FIG. 4A, when the rotating brush 60 is stopped, a fixed amount of the brush protrusion 70 b formed on the head of the lint removing brush 70 is fixed to the floor surface 22 and the fixed brush 9. It is configured such that a space of Other configurations are the same as in the above embodiment.

With the above configuration, as shown in FIG. 4B, when removing lint on the carpet 20, the lint removing brush 70 expands due to centrifugal force due to rotation, and the surface of the carpet 20 is removed. And fixed brush 9. Therefore,
By the same operation as in the above-described embodiment, the operation load can be reduced and the operability can be improved without generating noise or lowering the performance of scraping lint.

On the other hand, when it is not necessary to turn the rotating brush 60 for cleaning the tatami or flooring, if the power transmission from the wheels is cut off, the rotating brush 60 stops and is not subjected to the action of centrifugal force. As shown in FIG. 4A, the radius of the lint removing brush 70 is reduced and a space is formed between the rotating brush 60 and the floor surface 22 and the fixed brush 9, so that dust on the floor surface 22 is efficiently removed. It is sucked by the vacuum cleaner body. The structure for cutting off the power transmission from the wheels may be, for example, the transmission gear 14c shown in FIG.
3a, and is linked with a switching knob for cleaning a carpet and a tatami floor or a floor floor. When the tatami or floor floor is cleaned, the transmission gear 14c is moved to the axle 13a side.
This can be realized by releasing the engagement between the driving gear 14a and the driven gear 14b.

In the above-described embodiment, as the transmission mechanism for inverting the rotational power of the wheels 5a and transmitting the rotational power to the rotary brushes 6, 60, the gear mechanism 14 using the bevel gear train and the transmission belt 1 are used.
Although 5 is used, another gear mechanism or a transmission belt may be crossed.

In each of the above embodiments, the case where the present invention is applied to a floor suction device of a general floor-moving vacuum cleaner has been described. However, a vertical cleaner such as an upright type or a bloom type is used. The present invention can also be applied to other vacuum cleaners.

[0036]

As described above, according to the present invention, a suction tool main body having a suction port on the lower surface, a rotary brush facing the suction port and rotatably supported by the suction tool main body,
A wheel rotatably supported by the suction tool main body, and a transmission mechanism for rotating the rotating brush forward and backward with the rotation of the wheel, and a unidirectional elastic body disposed on the rotating brush. In addition to forming inclined projections at the same time, by providing a fixed brush having a large number of projections inclined in one direction at the suction port, the rotating speed of the rotating brush rotated by the wheel does not become too high, so that noise is reduced. No worries, and the contact between the rotating brush and the carpet surface is a point-like contact, which reduces contact resistance. Improvement can be achieved.

Further, the transmission mechanism reverses the rotational power from the wheels and transmits the rotational power to the rotating brush, so that the rotating brush rotates in a direction opposite to the traveling direction of the suction tool. Even if it is not fast, the relative speed with respect to the floor surface is fast, and the lint can be scraped off efficiently.

Further, the brush projection formed in a spiral shape on the rotating brush is formed to be inclined so as to face rearward when coming into contact with the floor surface, so that the scraped thread waste is sent in the suction direction, It becomes easy to be sucked.

The fixed brush is linearly provided on the rear wall side of the suction port, and the brush projection is formed in the same direction as the brush projection when in contact with the rotating brush and inclined in the suction direction. As a result, the lint adhering to the rotating brush can be reliably removed and sucked into the cleaner body side, and the contact between the spiral rotating brush and the linear fixed brush becomes a point-like contact. Since the contact resistance is reduced, the operability is not reduced.

Furthermore, the elastic body spirally disposed on the rotating brush changes its radius of rotation due to the centrifugal force associated with the rotation of the rotating brush, and the brush projection comes into contact with the floor surface and the fixed brush only during rotation, and stops. Sometimes, a certain space is created between the brush projections and the floor surface and the fixed brush, so when turning the rotating brush to clean the carpet, noise or scraping of lint should be made as described above. The operation load can be reduced and the operability can be improved without lowering the taking performance. On the other hand, when it is not necessary to rotate the rotating brush when cleaning the tatami or flooring, the centrifugal force is not applied if the transmission mechanism is disconnected, so the radius of the rotating brush is reduced and the rotating brush and the floor or fixed brush Since there is a space between the vacuum cleaner and the space, dust on the floor can be efficiently sucked into the cleaner body.

[Brief description of the drawings]

FIG. 1 is a top view of a vacuum cleaner according to an embodiment of the present invention, in which an upper case of a floor suction tool is removed.

FIG. 2 is a side cross-sectional view which also serves to explain the operation of the embodiment.

FIG. 3 is an enlarged side sectional view showing details of the rotating brush of the embodiment.

FIG. 4 is a side sectional view showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Floor suction tool 2 Main body case 3 Suction port 5a, 5b Wheel 6, 60 Rotating brush 7, 70 Lint removal brush 7b, 70b Brush projection 9 Fixed brush 14 Gear mechanism 15 Transmission belt 20 Carpet 21 Lint

Claims (5)

[Claims] A suction tool main body having a suction port on a lower surface thereof;
A rotating brush rotatably supported by the suction tool body facing the suction port, a wheel rotatably supported by the suction tool body, and rotating the rotating brush forward and reverse with the rotation of the wheel. A fixed mechanism having a transmission mechanism for causing the rotating brush to have a projection inclined in one direction on an elastic body spirally disposed on the rotary brush, and having a plurality of projections inclined in one direction in the suction port. A floor suction device for a vacuum cleaner, comprising: 2. The suction tool for a floor of a vacuum cleaner according to claim 1, wherein the transmission mechanism reverses rotation power from wheels and transmits the rotation power to the rotating brush. 3. The brush projection spirally formed on the rotating brush is formed to be inclined so as to face rearward when it comes into contact with a floor surface.
The suction device for floors of the vacuum cleaner according to the above. 4. The fixed brush is provided linearly on the suction wall rear wall side, and the brush protrusion is formed in the same direction as the brush protrusion when in contact with the rotating brush and is inclined in the suction direction. The suction tool for floors of a vacuum cleaner according to claim 3, characterized in that: 5. The elastic body spirally disposed on the rotating brush, the radius of rotation changes due to centrifugal force accompanying rotation of the rotating brush, and the brush projection contacts the floor surface and the fixed brush only during rotation, The floor suction device for a vacuum cleaner according to any one of claims 1 to 4, wherein a predetermined space is formed between the brush protrusion and the floor surface and the fixed brush when the brush is stopped. .