JP2000184998A - Sucking tool for vacuum cleaner and vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small and light vacuum cleaner sucking tool and a vacuum cleaner, by which the number of rotations in an agitator on a carpet is prevented from being reduced without increasing the torque of the driving source of the agitator. SOLUTION: The cleaner is internally provided with the freely rotatable agitator 19 and the agitator 19 is constituted of a rotator 20 and a brush group 23 arranged in a longitudinal direction on the peripheral surface of the rotator 20. Then the brush group 23 is constituted of the brush group 23a arranged in the normal direction of the rotator 20 and the one 23b arranged with an inclination to the normal direction so that a load applied to the brush group 23b in the case of the rotation of the agitator 19 is reduced.

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 a vacuum cleaner using the suction device.

[0002]

2. Description of the Related Art Conventionally, a suction device for a vacuum cleaner of this type is generally as shown in FIGS. An agitator-2 is provided inside the suction tool main body 1, and the agitator-2 is provided.
Is composed of a rotatable rotor 3 and a raised cloth brush group 4 formed of a plurality of fine fiber cut pile spinning cloths provided in a plurality of lengthwise directions around the rotor, and the like.
(Not shown) or an air turbine (not shown) using suction air as a driving source to rotate the agitator 2 to brush the floor 5 such as a tatami mat and the cleaning surface such as a carpet 6. The garbage is scraped and cleaned by colliding the group 4 and the like.

[0003]

However, in the conventional suction device for a vacuum cleaner, as shown in FIG. 14, the tips of a plurality of brush groups 4 are placed on the floor with the suction device body 1 placed on the floor. Because it is set to contact the surface, the suction tool body 1
When the is placed on the carpet surface, the bottom surface of the suction tool main body 1 sinks into the carpet surface, and the brush group 4 is bent backward in the rotation direction as shown in FIG.

As a result, the rotational speed of the agitator is reduced, and the power for removing dust is reduced. Therefore, when the torque of the drive source is increased in order to maintain the dust collection performance, the drive source is increased in size. There were problems such as the expansion of the shape of the suction tool body.

The present invention has been made to solve the above-mentioned conventional problems, and it is possible to reduce the number of rotations of an agitator on a carpet without increasing the torque of a driving source, thereby reducing the size and size of the carpet. An object of the present invention is to provide a lightweight suction device for a vacuum cleaner and a vacuum cleaner.

[0006]

According to the present invention, in order to solve the above-mentioned problems, a rotatable agitator is provided inside, and the agitator is provided with a rotor and a peripheral surface of the rotor. The brush group is formed by a plurality of brush groups provided in a longitudinal direction, and the brush group is configured by a brush group provided in a normal direction of the rotor and a brush group provided to be inclined with respect to the normal direction. At the time of rotation of the rotor, the cut end face of the brush end of the brush group provided in the normal direction of the rotor collides with the floor surface on the floor surface, and wiping on the floor surface is realized. In addition, by mixing the brush group provided in the normal direction and the brush group provided at an angle, the contact resistance can be reduced compared to the agitator with only the brush group not tilted, and the brush group on the carpet Since it is possible to prevent an increase in the generated rotational resistance and to increase the torque of the drive source, it is possible to provide a small and lightweight suction tool for a vacuum cleaner.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION
A rotatable agitator is provided therein, and the agitator is formed by a rotor and a plurality of brush groups provided in a longitudinal direction of a circumferential surface of the rotor. It consists of a brush group provided in the normal direction and a brush group provided at an angle to the normal direction, and the tip of the brush group provided in the normal direction of the rotor is set to be in contact with the floor surface. And
Further, by providing the brush group inclined with respect to the normal direction on the rotor at an angle of rotation at which the rotation trajectory of the brush group tip comes in contact with at least the carpet surface, when the agitator rotates, On the floor surface, the cut end face of the bristle tip of the brush group provided in the normal direction of the rotor collides with the floor surface, and wiping on the floor surface is realized. Also, by mixing the brush group provided in the normal direction and the brush group provided at an angle,
The contact resistance can be reduced as compared with an agitator having only brush groups provided in the normal direction, and a small and lightweight suction device for a vacuum cleaner can be provided.

According to a second aspect of the present invention, there is provided a rotatable agitator, wherein the agitator is provided with a rotor and a protrusion allowance provided in a longitudinal direction around the rotor. It is formed of a plurality of different brush groups, and the brush group is provided to be inclined with respect to the normal direction of the rotor,
The brush group with a small protrusion margin and the brush group with a large protrusion margin draw the same trajectory as the rotation trajectory of the tip of each brush group when the brush group is provided in the normal direction of the rotor, respectively.
The brush group with a small protrusion is set on the carpet surface, and the brush group with a large protrusion is set on the floor. Compared with the brush group provided in the normal direction of the rotor, the brush group provided with a slant with respect to the normal direction so as to draw the same locus when rotating the agitator has a small protrusion on the carpet. By rotating only the tip of the corner of the cut end face of the brush tip of the brush group, the rotation resistance can be reduced without increasing the cost such as making the cut end face of the brush tip of the brush group special. Can be reduced.

On the floor surface, the brush group having a large protrusion margin is similarly rotated by contacting only the tip of the corner of the cut end surface of the bristle tip of the brush group, so that the rotation resistance can be reduced. The softness of cleaning can be improved. On the carpet surface, when the agitator rotates, the root of the brush group rotates ahead of the tip in the direction of rotation. By reducing the bending angle of the tip portion with respect to the portion, the rotation resistance generated in the brush portion can be reduced. On the other hand, when the root portion of the brush group rotates later than the tip portion in the rotation direction, the brush group has By increasing the bending angle of the tip portion with respect to the root portion, the pressing force of the cut end face portion of the brush tip of the brush group on the carpet is increased, and the effect of scraping up dust is increased and dust collection performance can be improved.

According to a third aspect of the present invention, in a brush group provided at an angle to the normal direction of the rotor and the normal direction, the root portion of the brush group at the time of agitator rotation is used. When the agitator rotates, the brush group collides with the cleaning surface, and when the brush group collides with the cleaning surface, when the brush group causes a so-called breakage, etc. By rotating the root portion ahead of the tip portion in the rotation direction, the bending angle of the tip portion with respect to the root portion of the brush group is reduced, and the rotational resistance generated in the brush group can be reduced.

According to a fourth aspect of the present invention, there is provided a brush group provided in a direction inclined with respect to the normal direction of the rotor, from a diameter of a rotation trajectory of a brush group provided in a normal direction of the rotor. The diameter of the rotation locus of the part is set to be large, and the inclination angle of the brush group is set so that the root part of the brush group rotates earlier than the tip part in the rotation direction, and it is set in the normal direction of the rotor. In the provided brush group, the rotation locus of the tip of the brush group when rotating the agitator is on the carpet, and the rotation locus of the tip of the brush group that is inclined with respect to the normal direction is on the floor. When the agitator rotates, the cut end face of the brush tip of the brush group provided in the normal direction of the rotor collides with the carpet surface when the agitator rotates. Maintain the effect of brushing out garbage at the brush hair tip, and By setting the angle of inclination of the brush group so that the brush group provided with the locus diameter is inclined with respect to the normal direction, the root part of the brush group rotates earlier than the tip part in the rotation direction than the tip part In addition, the bending angle of the tip of the brush group with respect to the root of the carpet becomes small, and the rotational resistance generated in the brush group can be reduced.

According to a fifth aspect of the present invention, a group of brushes provided at an angle to the normal direction of the rotor is formed more softly than a group of brushes provided at the normal direction of the rotor. The brush group is set at an inclination angle such that the brush group provided at an angle with respect to the normal direction having a large diameter rotates at the root of the brush group earlier than the tip of the brush group with respect to the rotation direction. Is soft, not only the bend angle of the tip end portion of the brush group on the carpet with respect to the root portion is reduced, but also by the soft material, the rotational resistance generated in the brush group can be further reduced.

According to a sixth aspect of the present invention, at least one group of brushes is provided with a plurality of cutouts in the longitudinal direction. When the so-called waist break occurs in the brush group, notches are provided, so that the brush group not only causes a waist break phenomenon only in the rotation direction but also disperses in the direction of the notch part, so that the rotational resistance generated in the brush group is reduced. Can be reduced.

According to a seventh aspect of the present invention, at least one group of brushes is provided in a substantially V-shape along the longitudinal direction of the peripheral surface of the rotor. Both ends rotate before the V-shaped valley of the brush group. When the agitator is rotated, dust on the cleaning surface is sequentially removed from both ends of the brush group by the V-shape of the brush group. Is attracted to the valley, and the attracted dust is efficiently sucked.

According to an eighth aspect of the present invention, there is provided an electric blower and the suction device for a vacuum cleaner according to any one of the first to seventh aspects, which communicates with the electric blower. Is reduced in size, so that a vacuum cleaner with good operability can be provided.

[0016]

(Embodiment 1) A first embodiment of the present invention will be described below with reference to FIGS. 1, 2 and 3, the suction tool main body 11 includes an upper frame 12 and a lower frame 13, and has a dust collecting chamber 14 therein. An opening 15 is provided in the lower frame 13. And it has a pipe 16 at the rear of the suction tool,
Inside the pipe 16, a suction port 17 is provided from the dust collection chamber 14.
There is provided a passage 18 for transmitting suction by an electric blower (not shown) in a vacuum cleaner main body (not shown) through the inside. Further, an agitator 19 is provided in the dust collecting chamber 14, and the agitator 19 includes a rotatable cylindrical rotor 20 and a reduction gear (not shown) inside the rotor. Z)
An electric motor 21 which is a drive source for driving the rotor 20 through the motor is internally provided.

A plurality of continuous grooves 22 are provided in the longitudinal direction of the peripheral surface of the rotor 20, and a brush group 2 is provided in the groove 22.
3 is fitted. In the present invention, the brush group 23 uses a raised cloth brush body made of a spun cloth in a cut pile shape of fine fibers, and the tip of the brush group 23a provided in the normal direction X of the rotor 20 has a wooden floor or the like. The brush group 23b having the same height with respect to the normal direction X is set to be in contact with the floor surface 24 such as a tile surface, and the rotation locus of the tip of the brush group 23b is at least a carpet when the agitator rotates. The rotor 20 is provided at an inclination angle Z that collides with the upper part 25, in this embodiment, at 30 °.

The operation and operation of the above configuration are as follows. The agitator 19 is an electric motor-2 as a driving source.
1 rotates in the arrow Y direction. When the agitator 19 rotates, the cut end face of the bristle tip of the brush group 23a provided in the normal direction of the rotor 20 collides with the floor surface 24 on the floor surface 24.
Wiping and cleaning on the floor surface 24 is realized.

On the other hand, as shown in FIG. 3, on the carpet surface 25, the rotation trajectory of the tip of the brush group 23b provided at an angle of 30 ° with respect to the normal direction X of the rotor 20 is provided in the normal direction X. The diameter is smaller than the rotation locus of the tip of the brush group 23a, and at least the carpet surface 25 collides,
Since it is possible to prevent an increase in the rotational resistance generated in the brush group 23b on the carpet 25, it is not necessary to increase the torque of the electric motor 21, and it is possible to provide a small and lightweight suction device for a vacuum cleaner. An electric motor is attached to the rotor 20 as in the example.
When the drive source is required to be reduced in size and weight, for example, when the drive source 21 is internally provided, the effect is large. In the case where the agitator 19 is rotated by using a suction force (suction air) without using the electric motor 21, a higher effect can be expected because the rotation torque is originally small.

(Embodiment 2) Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. The configuration of the suction tool main body 11 is the same as that of the first embodiment, and the description is omitted.
In FIG. 4, a plurality of brush groups 26 having different protrusion margins are provided in the longitudinal direction around the rotor 20, and the brush groups 26 are provided at an inclination angle of 30 ° with respect to the normal direction of the rotor 20. The brush group 26a having a small protrusion margin and the brush group 26b having a large protrusion margin are respectively provided at the tip of each brush group when the agitator 19 rotates when the agitator 19 is provided in the normal direction of the rotor 20. The same trajectory as the rotational trajectory is drawn, and the brush group 26a having a small protrusion is set on the carpet surface 25, and the brush group 26b having a large protrusion is set on the floor surface 24.

The operation and operation according to the above configuration are as follows. Compared with the brush group 26a provided in the normal direction of the rotor 20, the brush group 26 provided with an inclination angle of 30 ° with respect to the normal direction so as to draw the same trajectory when the agitator 19 rotates has a small protrusion margin. The brush group 26a rotates on the carpet surface 25 by rotating only the tip of the corner of the cut end surface of the bristle tip of the brush group 26a on the carpet surface 25, thereby reducing the rotational resistance.

Further, the brush group 26b having a large protruding margin is similarly rotated on the floor surface 24 only at the corner end of the cut end face of the bristle tip of the brush group 26b. There is no need to increase the cost, for example, by making the cut end face of the bristle tip of the brush group 26b into a special shape, and it is possible to further improve the softness of floor cleaning. On the carpet surface 25, when the agitator 19 rotates, as shown in FIG. 5, when the root portion of the brush group 26b rotates earlier than the tip portion in the rotation direction Y,
By reducing the bending angle of the tip end portion with respect to the root portion of the brush group 26b, rotation resistance generated in the brush portion can be reduced.

On the other hand, as shown in FIG.
When the root of the brush group 26b rotates later than the tip in the rotation direction Y, the bending angle of the tip of the brush group 26b with respect to the root of the brush group 26b increases, so that the tip of the brush group 26b on the carpet surface 25 The press-contact force of the cut end face increases, the effect of scraping up dust increases, and the dust collection performance can be improved.

(Embodiment 3) Hereinafter, a third embodiment of the present invention will be described with reference to FIG. The configuration of the suction tool body 11 is as follows.
Since the configuration is the same as that of the first embodiment, the description is omitted. In FIG. 7, in a brush group 23 provided with a normal direction X of the rotor 20 and an inclination angle Z of 30 ° with respect to the normal direction X, the root of the brush group 23 at the time of rotation of the agitator 19 The inclination direction of the brush group 23 is set so that the portion rotates ahead of the tip portion with respect to the rotation direction.

The operation and operation according to the above configuration are as follows. When the brush group 23 collides with the cleaning surface during the rotation of the agitator 19, so-called waist breakage or the like occurs, by rotating the root portion first in the rotation direction Y from the tip portion, Since the bending angle of the tip end portion with respect to the root portion of the brush group 23 is reduced and the rotational resistance generated in the brush group 23 can be reduced, a small and lightweight vacuum cleaner suction tool can be provided.

This is particularly effective when a small and lightweight drive source is required, such as when an electric motor 21 is provided inside the rotor 20 as in the present embodiment. Also, the electric motor-21
Agitator-1 using suction force (suction wind)
In the case of rotating 9, more effect can be expected because the torque is small.

(Embodiment 4) Hereinafter, a fourth embodiment of the present invention will be described with reference to FIG. The configuration of the suction tool body 11 is as follows.
Since the configuration is the same as that of the first embodiment, the description is omitted. 8, a brush group 23a provided in the normal direction of the rotor 20 is shown.
Therefore, the brush group 23b provided at an angle of 30 ° with respect to the normal direction has a configuration in which the diameter of the rotation locus formed by the tip of the brush group 23 when the agitator 19 rotates is larger. The inclination angle of the brush group 23 is set such that the root of the brush group 23 rotates earlier than the tip part in the rotation direction.

The operation and operation of the above configuration are as follows. Brush group 23a provided in the normal direction of rotor 20
The rotation locus of the tip of the brush group 23 when the agitator 19 is rotated is on the carpet surface 25, and the tip of the brush group 23b is provided at an angle of 30 ° with respect to the normal direction. The rotation locus is set so as to be in contact with the floor surface 24. When the agitator 19 rotates, the cut end surface of the brush tip of the brush group 23a collides with the carpet surface 25 on the carpet surface 25. The brush group 23b provided with the effect of scrubbing the dust at the brush bristle tips on the carpet 25, the diameter of the rotation locus being large, and the inclined brush group 23b
By setting the inclination direction of the brush group 23b such that the root portion of the b rotates earlier than the tip portion in the rotation direction,
The bending angle of the tip of the brush group 23b with respect to the root of the carpet 25 on the carpet 25 is reduced, and the rotation resistance generated in the brush group 23b can be reduced. Therefore, a small and lightweight suction device for a vacuum cleaner can be provided. Rotor 20 as in the example
This is particularly effective when the drive source is required to be smaller and lighter, such as when an electric motor 21 is internally provided. In addition, electric motor
In the case where the agitator 19 is rotated using suction force (suction air) without the rotor 21, the effect can be expected because the torque is small.

(Embodiment 5) Hereinafter, a fifth embodiment of the present invention will be described with reference to FIG. The configuration of the suction tool body 11 is as follows.
Since the configuration is the same as that of the first embodiment, the description is omitted. 9, a brush group 23a provided in the normal direction of the rotor 20 is shown.
Thus, the brush group 23b provided at an angle of 30 ° with respect to the normal direction is formed softly.

The operation and operation according to the above configuration are as follows. The inclination direction of the brush group 23b is set so that the root portion of the brush group 23b having a large diameter of the rotation locus rotates earlier than the tip portion in the rotation direction.
Is soft, so that the brush group 2 on the carpet surface 25
In addition to reducing the bending angle of the distal end portion with respect to the root portion of 3b, the rotational resistance generated in the brush group can be further reduced by forming the material soft, so that a small and lightweight vacuum cleaner suction tool is provided. This is particularly effective when the drive source is required to be small and light, such as when the electric motor 21 is provided in the rotor 20 as in the present embodiment.
In the case where the agitator 19 is rotated by using a suction force (suction air) without using the electric motor 21, a greater effect can be expected because the torque is small.

As means for forming the brush group 23b to be soft, the constituent members of the brush group 23b are formed of a material having low hardness, the number of brush fibers is reduced, or the brush group is formed of fibers having a smaller diameter. In short, it is only necessary that the brush group 26b bend more easily than the brush group 23a.

(Embodiment 6) Hereinafter, a sixth embodiment of the present invention will be described with reference to FIG. The configuration of the suction tool main body 11 is the same as that of the first embodiment, and the description is omitted. In FIG. 10, a plurality of notches 27 are provided in at least one group of the brush groups 23 in the longitudinal direction.

The operation and operation according to the above configuration are as follows. When the agitator 19 rotates, after the brush group 23 collides with the cleaning surface, the brush group 23 causes a so-called waist break phenomenon. In this case, the brush group 23 has a notch 27 in addition to the waist break phenomenon in the rotating direction. , The rotational resistance generated in the brush group 23 can be reduced, so that a small and lightweight suction device for a vacuum cleaner can be provided. In particular, the electric motor is attached to the rotor 20 as in this embodiment. This is particularly effective when the drive source is required to be reduced in size and weight, for example, by internally mounting the heater 21.

Embodiment 7 Hereinafter, a seventh embodiment of the present invention will be described with reference to FIG. The configuration of the suction tool main body 11 is the same as that of the first embodiment, and the description is omitted. In FIG. 11, at least one of the brush groups 23 is provided in a substantially V shape along the longitudinal direction of the circumferential surface of the rotor 20. In the present embodiment, the brush group 23 extends along the longitudinal direction of the circumferential surface of the rotor 20. All of the plurality of provided brush groups are substantially V-shaped. When the agitator 19 rotates, the V-shaped valleys 23c of the brush group 23 extend from both ends 23d in the rotation direction.
Is rotated in advance.

The operation and operation of the above configuration are as follows. When the agitator 19 rotates, the dust on the cleaning surface is sequentially drawn to the V-shaped valleys 23c of the brush group 23 from both ends of the brush group 23, and the collected dust is efficiently sucked. , Dust collection performance can be improved.

Embodiment 8 Hereinafter, an eighth embodiment of the present invention will be described with reference to FIG. A vacuum cleaner body 30 having a dust chamber 28 and a motor 29 for collecting dust therein.
A vacuum cleaner having a connection port connected to any one of the suction tool main bodies 11 of the above-described embodiment via a hose 31 and an extension pipe 32, and in particular, a brush on a carpet as compared with the conventional one. An increase in rotational resistance generated in the group can be prevented, and there is no need to increase the torque of the drive source. Therefore, a small and lightweight suction tool for a vacuum cleaner can be provided. In the case where the agitator 19 is rotated by using a suction force (suction air) without using the electric motor 21, a greater effect can be expected because the torque is small.

[0037]

According to the first aspect of the present invention,
On the floor, the ends of the bristles of the brushes provided in the normal direction of the rotor collide with the floor, realizing wiping on the floor, and the normal direction of the rotor on the carpet. Therefore, it is possible to prevent an increase in rotational resistance caused by a group of brushes provided at an angle, and it is not necessary to increase the torque of the driving source. Therefore, a small and lightweight suction tool for a vacuum cleaner can be provided.

According to the second aspect of the present invention, a rotatable agitator is provided inside, and the agitator is provided in a longitudinal direction of a rotor and a peripheral surface of the rotor. The brush group includes a plurality of brush groups having different protrusion margins, and the brush groups are provided to be inclined with respect to the normal direction of the rotor. Since only the tip of the corner portion of the cut end face abuts and rotates, the rotational resistance can be reduced without increasing the cost such as making the cut end face of the brush tip of the brush group a special shape. Also,
On the floor surface, the brush group with a large protrusion allows the rotation resistance to be reduced by similarly rotating only the tip of the corner of the cut end face of the bristles of the brush group, and the softness of floor cleaning. On the other hand, on the carpet surface, when the agitator rotates, when the root of the brush group rotates ahead of the tip in the rotation direction, the tip of the brush group with respect to the root is When the bending angle of the brush group becomes small, the rotation resistance generated in the brush part can be reduced. On the other hand, when the root part of the brush group rotates later than the tip part in the rotation direction, the tip of the brush group with respect to the root part When the bending angle of the portion is increased, the pressing force of the cut end face portion of the brush tip of the brush group on the carpet is increased, and the effect of scraping up dust is increased, and the dust collecting performance can be improved.

According to the third aspect of the present invention, after the brush group collides with the cleaning surface during rotation of the agitator,
When the brush group causes so-called waist breaks, etc., the bend angle of the tip part with respect to the root part of the brush group becomes smaller by rotating the root part ahead of the tip part in the rotation direction, especially the brush on the carpet. Since it is possible to prevent an increase in rotational resistance generated in the group and to increase the torque of the driving source, it is possible to provide a small and lightweight suction device for a vacuum cleaner.

According to the invention of claim 4 of the present invention, on the carpet surface, the cut end face of the brush tip of the brush group provided in the normal direction of the rotor collides with the carpet surface. A brush group that maintains the effect of brushing up dust at the brush bristles and sets an inclination angle with respect to the normal direction where the diameter of the rotation locus is large, the rotation direction is at the root of the brush group than at the tip By setting the inclination angle of the brush group so as to rotate first, the bending angle of the tip portion with respect to the root portion of the brush group on the carpet is reduced, and it is possible to prevent an increase in rotation resistance generated in the brush group, Since it is not necessary to increase the torque of the drive source, a small and lightweight suction tool for a vacuum cleaner can be provided.

According to the invention described in claim 5 of the present invention, the brush group provided in a direction inclined to the normal direction of the rotor is made softer than the brush group provided in the direction normal to the rotor. An increase in rotational resistance generated in the group can be prevented, and there is no need to increase the torque of the drive source. Therefore, a small and lightweight suction tool for a vacuum cleaner can be provided.

According to the invention of claim 6 of the present invention, at least one of the brush groups is provided with a plurality of notches in the longitudinal direction, and the agitator rotates to rotate the brush group. When the so-called waist breaks etc. occur on the cleaning surface, the notches are provided, so that the brush group not only causes the waist break phenomenon only in the rotation direction but also disperses in the direction of the notch part, so that the brush group is generated. Since it is possible to prevent an increase in rotational resistance and to increase the torque of the drive source, it is possible to provide a small and lightweight suction tool for a vacuum cleaner.

According to the seventh aspect of the present invention, at least one of the brush groups is provided in a substantially V shape along the longitudinal direction of the peripheral surface of the rotor. On the other hand, when the agitator is rotated, the dust on the cleaning surface is sequentially moved from both ends of the brush group to the brush group when the agitator is rotated. The dust collected by the V-shaped valleys is efficiently sucked by the collected dust, thereby improving the dust collection performance.

According to an eighth aspect of the present invention, there is provided an electric vacuum cleaner comprising: an electric blower; and the suction device for an electric vacuum cleaner according to any one of claims 1 to 7, which communicates with the electric blower. By using a vacuum cleaner, it is possible to prevent an increase in the rotational resistance of the brush group on the carpet compared to the conventional one, and it is not necessary to increase the torque of the drive source at the suction tool part. It can be provided.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a suction tool for a vacuum cleaner showing a first embodiment of the present invention.

FIG. 2 is a side sectional view of an agitator of the vacuum cleaner suction tool.

FIG. 3 is a side sectional view of an agitator of the suction device for the vacuum cleaner.

FIG. 4 is a side sectional view of an agitator of a suction device for a vacuum cleaner showing a second embodiment of the present invention.

FIG. 5 is a side sectional view of an agitator of the suction device for the vacuum cleaner.

FIG. 6 is a side sectional view of an agitator of the suction device for the electric vacuum cleaner.

FIG. 7 is a side sectional view of an agitator of a vacuum cleaner suction tool according to a third embodiment of the present invention.

FIG. 8 is a side sectional view of an agitator of a vacuum cleaner suction tool according to a fourth embodiment of the present invention.

FIG. 9 is a side sectional view of an agitator of a vacuum cleaner suction tool according to a fifth embodiment of the present invention.

FIG. 10 is a front view of a main part of an agitator of a suction device for a vacuum cleaner showing a sixth embodiment of the present invention.

FIG. 11 is an overall view of an agitator of a suction device for a vacuum cleaner showing a seventh embodiment of the present invention.

FIG. 12 is an overall view of a vacuum cleaner showing an eighth embodiment of the present invention.

FIG. 13 is a side sectional view of a conventional suction device for a vacuum cleaner.

FIG. 14 is a side sectional view of an agitator of the suction device for the electric vacuum cleaner.

FIG. 15 is a side sectional view of the vacuum cleaner suction tool when the agitator is rotating.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Suction implement main body 19 Agitator 20 Rotor 23 Brush group 26 Brush group 27 Cutout part of brush group 29 Motor 30 Electric cleaner body

Continued on the front page (72) Inventor Koichi Fujita 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. 3B061 AA06 AA51 AD05 AD13 AD16

Claims (8)

[Claims] A rotatable agitator provided therein, said agitator comprising a rotor and a plurality of brush groups provided in a longitudinal direction of a peripheral surface of said rotor; Is a brush group provided in the normal direction of the rotor and a brush group provided to be inclined with respect to the normal direction. 2. A rotatable agitator is provided internally, and said agitator comprises a rotor and a plurality of brush groups provided in the longitudinal direction of the peripheral surface of said rotor and having different protrusion margins. And a suction device for a vacuum cleaner, wherein the brush group is provided to be inclined with respect to a normal line direction of the rotor. 3. A suction device for a vacuum cleaner according to claim 1 or 2, wherein the inclination direction of the brush group is set so that the root portion of the brush group rotates ahead of the tip portion during rotation of the agitator. Utensils. 4. The method according to claim 1, wherein the diameter of the rotation locus of the tip of the brush group provided inclining with respect to the normal direction is larger than the diameter of the rotation locus of the tip of the brush group provided in the normal direction of the rotor. Item 6. The suction device for a vacuum cleaner according to Item 3. 5. The suction tool for an electric vacuum cleaner according to claim 4, wherein a brush group provided at an angle to the normal direction of the rotor is formed softer than a brush group provided in the normal direction of the rotor. 6. A brush according to claim 1, wherein a plurality of notches are provided in a longitudinal direction of at least one of the brush groups.
Item 6. A suction device for an electric vacuum cleaner according to item 7. 7. At least one group of brushes is provided in a substantially V shape along the longitudinal direction of the peripheral surface of the rotor, and at the time of agitator rotation, a V-shaped valley of the brush group with respect to the rotation direction. The suction tool for a vacuum cleaner according to any one of claims 1 to 6, wherein both end portions are rotated prior to the portion. 8. An electric vacuum cleaner comprising: an electric blower; and a suction device for an electric vacuum cleaner according to claim 1, which communicates with the electric blower.