JP3381695B2 - Vacuum cleaner suction tool and vacuum cleaner using the same - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction tool for a vacuum cleaner and a vacuum cleaner using the suction tool.

[0002]

2. Description of the Related Art Recently, forcibly rotating an agitator,
Suction tools for vacuum cleaners, which effectively clean carpets and the like, have become the mainstream.

FIG. 30 shows the structure of a conventional suction tool for an electric vacuum cleaner.
And it demonstrates based on FIG.

As shown in the figure, the rotary shaft 7 is provided in the suction tool body 2.
The air turbine 8 having the
Air turbines 54 are arranged at both ends of the. Also,
A lower opening C is provided on the lower surface of the suction tool main body 52 at a portion (excluding the air turbine 54) facing the agitator 58, and dust on the surface to be cleaned is sucked into the suction tool main body 52 through the lower opening C. Suction. The suction wind is generated by connecting the suction pipe A provided behind the suction tool body 52 to the suction port side of the vacuum cleaner body and driving the electric blower of the vacuum cleaner body. Further, when the suction force is applied to the suction tool body 52, outside air is introduced into the suction tool body 2 through the air inflow port B provided above and facing the air turbine 54, and an air flow indicated by an arrow 51 is generated. This air flow 51
The air turbine 54 is rotated by the air turbine 5
The agitator 58 mounted together with 4 rotates about the bearing 59 as a fulcrum. In this way, the agitator 58 is rotated by the suction force, the dust on the surface to be cleaned is scraped out by the rotation of the agitator 58, and the dust is sucked from the lower opening C together with the suction air.

[0005]

As described above, in the conventional suction tool for the electric vacuum cleaner, the air turbine 54 and the agitator 58 are provided as separate members and are mounted in the suction tool body 52. As it became larger, it was difficult to clean the narrow space between the furniture and the wall, and the number of parts was large, so assembly was not good.

Further, the air turbine 54 is attached to the agitator 5
Since the both ends of 8 are made of separate members, the width of the air turbine 54 is required in addition to the width 53 of the agitator 58 that contributes to cleaning, and the width that can actually collect dust with respect to the width of the suction tool. Was getting quite small.

SUMMARY OF THE INVENTION The present invention is intended to solve the above problems, and it is an object of the present invention to widen the cleaning range of an agitator with respect to the width of a suction tool and to reduce the size of the suction tool to improve the assemblability.

[0008]

In order to achieve the above object, the present invention is directed to a dust collecting chamber having an opening at the bottom thereof, an agitator rotatably arranged in the dust collecting chamber, and a cleaner body. A pipe connected to the suction port side, a passage provided at the tip end side of the pipe and communicating with the dust collection chamber, and a suction port provided at the tip end side of the passage and communicating with the dust collection chamber and the lower opening. And a plurality of convex strips forming a dust scraping portion provided on the peripheral surface of the agitator, wherein the convex strips cover the lower portion of the opening with a surface to be cleaned. Is arranged at an angle different from the inflow angle of the suction wind that flows into, the convex strip receives the suction wind and rotates the agitator, and between the outer shape of the convex strip and the suction port. , An opening that communicates with outside air that is equal to or larger than the cross-sectional area of the passage in the pipe With this arrangement, when the suction tool is positioned in the air, most of the suction air flows into the pipe through the opening, so that the agitator is not rotated, and the pipe between the outer shape of the convex band and the suction port is prevented. Since the opening communicating with the outside air, which is equal to or larger than the cross-sectional area of the inner passage, is arranged, when the suction tool is located in the air, the agitator does not rotate, the rotation noise generated by the rotation of the agitator does not occur, and the suction wind does not occur. It is also possible to prevent generation of wind noise caused by being blocked by the convex band, and noise due to suction can be reduced.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is
A dust collection chamber having an opening at the bottom, an agitator rotatably disposed in the dust collection chamber, a pipe connected to the suction port side of the cleaner body, and a pipe provided at the tip side of the pipe. A plurality of passages that communicate with the dust chamber and a suction port that is provided on the tip side of the passage and that communicates with the dust collection chamber and the lower opening, and that constitutes a dust scraping portion provided on the peripheral surface of the agitator. The convex band is provided at a different angle from the inflow angle of the suctioned air flowing into the dust collecting chamber when the lower part of the opening is covered with the surface to be cleaned. The convex band receives the suction wind to rotate the agitator, and an opening communicating with the outside air having a cross-sectional area equal to or larger than the cross-sectional area of the passage in the pipe is arranged between the outer shape of the convex band and the suction port. Therefore, when the suction device is placed in the air, the suction wind Since the agitation flows into the pipe through the opening, the agitator is not rotated.Therefore, when the suction tool is located in the air, the agitator does not rotate, the rotation sound generated by the rotation of the agitator does not occur, and the suction air is generated. It is also possible to prevent generation of wind noise caused by being blocked by the convex band, and noise due to suction can be reduced.

The invention according to claim 2 of the present invention is claim 1
Since the convex strips are arranged radially around the rotation axis of the agitator, the convex strips are more likely to receive the suction air from the lower opening, and the rotational force of the agitator can be increased.

The invention according to claim 3 of the present invention is the invention according to claim 1.
Alternatively, since the convex strips No. 2 are arranged over the substantially entire width direction of the agitator, the suction wind from the lower opening is received by the convex strips in the full width direction of the agitator, so that the rotational force of the agitator can be increased.

The invention according to claim 4 of the present invention is the invention according to claim 1.
The convex strip according to any one of items 1 to 3 is arranged so as to project from the lower opening of the dust collecting chamber, and the tip side of the convex strip comes into contact with the surface to be cleaned. While rotating the agitator, the tip of the agitator can come into contact with and collide with the surface to be cleaned, and dust on the surface to be cleaned can be scraped up.

The invention according to claim 5 of the present invention is the invention according to claim 1.
1 to 4, when the suction tool is viewed from the bottom surface, the convex band is arranged in the longitudinal direction of the agitator so that the apex of the V shape is located near the longitudinal center of the outer circumference of the agitator. In addition, when the agitator rotates, the apex part of the V-shape of the convex band advances at the latest in the rotational direction.

The invention according to claim 6 of the present invention is the invention according to claim 5.
Part of the vicinity of the longitudinal center of the agitator of the convex band of
The agitator is formed in a linear shape parallel to the rotation axis.

According to a seventh aspect of the present invention, the convex band according to any one of the first to fourth aspects is formed in a linear shape parallel to the rotation axis of the agitator.

The invention according to claim 8 of the present invention is claim 1
The convex strip according to any one of items 1 to 4 is spirally arranged with respect to the rotation axis of the agitator.

The invention according to claim 9 of the present invention is the invention according to claim 1.
The cut or notch is provided in a part of the convex band of any one of 1 to 8.

According to a tenth aspect of the present invention, the outer shape of the convex band in the vicinity of the suction port according to any one of the first to ninth aspects is partially enlarged.

According to an eleventh aspect of the present invention, the outer shape of the agitator near the suction port according to any one of the first to ninth aspects is partially reduced in diameter.

According to a twelfth aspect of the present invention, the convex band according to any one of the first to eleventh aspects is provided so as to be radial with respect to the rotation axis of the agitator and inclined in the rotation direction. It is a thing.

According to a thirteenth aspect of the present invention, the convex band according to any one of the first to eleventh aspects is curved so as to have a radial shape with respect to the rotation axis of the agitator and to have a bulge in the rotation direction. It was made to be provided.

According to a fourteenth aspect of the present invention, the convex strip according to any one of the first to eleventh aspects is radially inclined with respect to the rotation axis of the agitator and is inclined in a direction opposite to the rotation direction. It was provided by .

According to a fifteenth aspect of the present invention, an electric blower is built in, and a suction port connected so as to communicate with the suction device for an electric vacuum cleaner according to any one of the first to fourteenth aspects is provided. It is a equipped vacuum cleaner.

[0024]

EXAMPLE 1 Example 1 of the present invention will be described below with reference to FIGS.

As shown in FIGS. 1 and 2, the main body of the vacuum cleaner suction tool is composed of an upper frame 1 and a lower frame 2, and has a dust collecting chamber 4 therein. A lower opening 3 is provided in the surface to be cleaned of the chamber 4, that is, in the lower surface of the lower frame 2. At the rear part of the suction tool body, there is a pipe 53 connected to the suction port side of the vacuum cleaner body.
A passage 6 communicating with the dust collecting chamber 4 is arranged on the inner tip side, and a suction port 5 communicating with the dust collecting chamber 4 and the lower opening 3 is provided on the tip side of the passage 6. Then, when the electric blower in the main body of the electric vacuum cleaner is driven, suction force is exerted on the pipe 53,
It acts on the passage 6 and the suction port 5, and sucks outside air including dust through the lower opening 3.

An agitator 10 is rotatably arranged in the dust collecting chamber 4, and the position of the agitator 10 is arranged to face the lower opening 3. As shown in FIGS. 2 and 4, the agitator 10 includes a cylindrical holder 7, a rotation shaft 9 provided at the center of the circle of the holder 7, and a plurality of belt-shaped convex shapes arranged on the outer peripheral surface of the holder 7. Obi 8
It consists of The plurality of convex strips 8 are arranged radially with respect to the rotation shaft 9 of the holder 7, and the individual convex strips 8 are arranged in the width direction of the holder 7, that is, in the direction along the rotation shaft 9, Moreover, the holder 7 is provided so as to project in the width direction, that is, the entire width in the direction of the rotating shaft 9.

Further, when the electric blower in the main body of the electric vacuum cleaner is driven, a suction force is generated, and the suction air sucked from 3 through the lower opening of the suction tool flows as shown by an arrow 11 in FIG. The convex strip 8 of the agitator 10 rotates around the rotary shaft 9 of the holder 7 by receiving the suction wind 11, and at the same time, the tip end 37 of the convex strip 8 comes into contact with and collides with the surface to be cleaned. It has the function of picking up dust on the cleaning surface.

Further, as shown in FIG. 3, the convex strip 8 is formed in a substantially V shape with the apex 12 at the longitudinal direction of the outer periphery of the agitator 10, that is, near the center in the direction of the rotating shaft 9, and the agitator is formed. When rotating ten, the apex of the letter-shaped 1
In order to move 2 in the latest direction, the holder 7 is formed in a spiral shape having a symmetrical shape around the center of the outer circumference of the holder 7 in the longitudinal direction.

The operation of the above configuration will be described. When the suction tool is placed on the surface to be cleaned, the lower opening 3 of the suction tool is covered by the surface to be cleaned except for both sides thereof, and the portion where the outside air is introduced by receiving the suction force from the suction port 5 is the suction tool. From both sides, the flow of suction air shown by the arrow 11 in FIG. 1 is generated. That is, since the suction port 5 is provided at the rear of the dust collection chamber 4 and near the center in the longitudinal direction, the suction air 11 introduced from both sides of the suction device flows along the longitudinal direction of the suction device. , Will be sucked from the suction port 5 near the center. When the suction wind 11 flows into the dust collecting chamber 4 and flows into the suction port 5, the convex band 8 is formed in the direction of the flow of the suction wind 11.
Is set at an angle different from the inflow angle of the agitator 1,
0 rotates about the rotation shaft 9 of the holder 7. The agitator 10 continuously rotates due to the above-described operations being continuously generated.

When the agitator 10 is rotated (see FIG. 1).
In the direction of arrow D), the tip end 37 of the agitator 10 is in contact with the surface to be cleaned, so that the tip 37 continuously collides with the surface to be cleaned, and dust on the surface to be cleaned is scraped out. Therefore, the convex band 8 of the agitator 10 can also have a role as an air turbine, which has a different structure in the past, in accordance with the effect of scraping out the dust as compared with the conventional case, and further the advancing direction of the suction wind 11 Flows along the direction of the rotation axis 9 of the agitator 10, but the convex band 8 generates wind by the rotation of the agitator 10. Since the direction of the wind generated by the convex band 8 is the direction of the arrows 34 and 38, the flow of the suction wind 11 and the flow of the wind by the convex band 8 are substantially in the same direction, and the dust scraped up efficiently is sucked. Can be delivered to mouth 5.

In this embodiment, the convex strip 8 has both the function as an air turbine and the function of scraping up dust, but the convex strip 8 has at least a function as an air turbine. For example, a plurality of rows of convex strips 8 may be arranged on the peripheral surface of the dust scrubbing portion of the agitator on which hair is transplanted, and the agitator may be rotated by suction air. The same applies to an agitator having. Further, it is preferable that the convex strip 8 is provided over the entire width direction of the agitator 10 so that the rotational force can be increased.
If you can obtain a large turning force with a short convex band,
It is not necessary to provide one row of the convex bands over the entire width direction of the agitator 10, and the convex bands may be partially provided in the width direction of the agitator 10, that is, in the rotation axis direction.

In order for the convex strip 8 to generate a rotational force by the suction wind, it is necessary to appropriately determine the flow direction of the suction wind and the arrangement direction of the convex strip so as to receive the pressure of the suction wind. There is.

Regarding the point that an opening communicating with the outside air having a pipe area equal to or larger than the pipe-shaped passage area is provided between the outer shape of the convex band and the suction port in the invention described in claim 1, refer to Example 19 described later. To do.

(Embodiment 2) A second embodiment of the present invention will be described with reference to FIGS. The same components as those in the above embodiment are designated by the same reference numerals and the description thereof will be omitted.

The convex band 8 is formed in a substantially V shape from the apex 12 near the center of the outer circumference of the holder 7 in the longitudinal direction, and the apex 12 of the V shape is rotated during rotation (direction of arrow E). Is formed in a symmetrical spiral shape with the outer periphery of the holder 7 as a boundary near the center in the longitudinal direction. Also,
The suction wind 11 flows from the front surface of the suction tool. Specifically, when the suction tool is placed on the surface to be cleaned, the lower surface opening 3 is covered by the surface to be cleaned except for the front surface of the lower surface opening 3.

To explain the operation of the above-mentioned structure, the suction band 11 flows into the dust collecting chamber 4 from the front part of the suction tool and flows into the suction port 5 with respect to the inflow direction. Is set at an angle different from the inflow angle of, the rotational force is generated by the pressure of the suction wind 11, and the agitator 10 rotates about the rotation shaft 9. The above operation continuously occurs and the agitator 10 continuously rotates.

When the agitator 10 is rotated, the tip 37 of the agitator 10 is in contact with the surface to be cleaned, so that the agitator 10 continuously collides with the surface to be cleaned and scrapes out dust on the surface to be cleaned. Therefore, the convex strip 8 of the agitator 10 has an effect of scraping out dust and also has a role of an air turbine, which has been conventionally configured differently. Further, the suction wind 11 flowing from the front over substantially the entire width of the suction device. Is rectified along the convex band 8 in the direction indicated by the arrow 38, that is, toward the suction port 5, so that dust is easily guided to the suction port 5 together with the suction wind 11, and efficient cleaning is possible. Is.

(Embodiment 3) A third embodiment of the present invention will be described with reference to FIG. The same components as those in the above embodiment are designated by the same reference numerals and the description thereof will be omitted.

The time-shaped apex 12 of the convex band 8 of the first embodiment is a linear portion 13 which is partially parallel to the rotation axis 9 of the holder 7. Further, the inflow direction of the suction wind 11 is the front part and both sides of the suction tool.

Explaining the operation in the above structure, the suction band 11 flows into the inside of the dust collecting chamber 4 from both ends of the suction tool, and the convex strip 8 is arranged in the direction of inflow when flowing into the suction port 5. Since it is set at an angle different from the inflow angle of 11, the agitator 10 receives force by the pressure of the suction wind 11.
Rotates about the rotation axis 9. The above operation continuously occurs and the agitator 10 continuously rotates. Also, the convex strip 8
The rotation of the wind generates the wind flow of arrows 33 and 35.
This flow direction is directed to the suction port 5 side, and the dust flowing with the suction wind 11 from both sides can be efficiently sent to the suction port 5 side.

Further, the suction band 11 flows into the dust collecting chamber 4 from the front part of the suction tool, and the convex strip 8 is different from the inflow angle of the suction air 11 in the inflow direction when flowing into the suction port 5, that is, Since the suction wind 11 from the front portion intersects the straight portion 13 of the convex strip 8 at a substantially right angle, the pressure of the suction wind 11 from the front portion can be efficiently converted into a rotational force, and the agitator 10 can rotate the rotating shaft. Rotate around 9. As described above, in addition to the rotational force due to the inflow from both ends of the suction wind 11, the rotational force due to the inflow from the front part of the suction wind 11 is continuously generated, the rotational force of the agitator 10 is improved, and strong continuous rotation is performed. Is.

Further, when the agitator 10 rotates, the tip 37 of the agitator 10 is in contact with the surface to be cleaned, so that the agitator 10 continuously collides with the surface to be cleaned and scrapes out dust on the surface to be cleaned. Therefore, it is possible to improve the effect of scraping dust from the convex strip 8 of the agitator 10 as compared with the conventional case, and also to serve as an air turbine which has a different structure from the conventional case. Since the flow direction of the wind due to the rotation operation of the convex band 8 is substantially the same, the flow direction of the wind inside the dust collection chamber 4 is unified, and the dust is easily guided to the suction port 5.

(Embodiment 4) A fourth embodiment of the present invention will be described with reference to FIG. The same components as those in the above embodiment are designated by the same reference numerals and the description thereof will be omitted.

The convex band 8 is provided on the outer periphery of the holder 7 in parallel with the rotation shaft 9 and over the entire width of the holder 7. Further, the suction wind 11 is made to flow only from the front part.

The operation will be described with the above structure. Suction wind 11 flows into the dust collecting chamber 4 from the front part of the suction tool, and the suction port 5
The convex strip 8 is different from the inflow angle of the suction wind 11 with respect to the inflow direction when flowing in, that is, it is set at an angle intersecting at a right angle, so that the pressure of the suction wind 11 is equal to that of the convex strip 8. A tight portion 39 which acts on the entire width and at which the convex strip 8 and the surface to be cleaned are tight on the suction side 40 and the inflow side 41.
As a result, if the agitator 10 does not rotate, for example, on the surface to be cleaned that is strongly attracted, the suction pressure on the suction side 40 rises and the rotational force B38 also improves.

Thus, the convex strip 8 of the agitator 10 can be improved in the effect of scratching dust as compared with the conventional one, and can also serve as an air turbine, which has a different structure from the conventional one. The agitator 10 can firmly rotate even on the surface to be cleaned, which has a large load against rotation.

(Fifth Embodiment) A fifth embodiment of the present invention will be described with reference to FIG. The same components as those in the above embodiment are designated by the same reference numerals and the description thereof will be omitted.

The convex band 8 is formed on the outer periphery of the holder 7 in a spiral shape over the entire width with respect to the rotating shaft 9. Also,
The suction wind 11 is made to be able to flow from the front part and both sides of the suction tool.

Explaining the operation with the above structure, the suction wind 11 flows into the dust collecting chamber 4 from both ends of the suction tool, but the convex band 8 is set at an angle different from the inflow angle of the suction wind 11. Therefore, the agitator 10 receives the pressure of the suction wind 11 and rotates about the rotating shaft 9. The above operation continuously occurs over the entire width of the agitator 10, and the agitator 10 continuously rotates.

The suction wind 11 flows into the dust collecting chamber 4 from the front part of the suction tool, but the convex band 8 is set at an angle different from the inflow angle of the draft wind 11. The pressure of the suction wind 11 is received. In this way, suction wind 1
In addition to the rotational force due to the inflow from both ends of 1, the rotational force due to the inflow from the front of the suction wind 11 is continuously generated, the rotational force of the agitator 10 is improved, and the agitator 10 performs strong continuous rotation. is there.

Further, when the agitator 10 rotates, the tip 37 of the agitator 10 is in contact with the surface to be cleaned, so that the agitator 10 continuously collides with the surface to be cleaned and scrapes out the dust on the surface to be cleaned. Therefore, the convex band 8 of the agitator 10 can be provided with the effect of scraping out dust and the role of the air turbine, which has been conventionally configured differently, and the suction wind 11 flowing from both sides and the front part of the suction tool. By continuously acting on the convex band 8, the rotation of the agitator 10 becomes smooth, and the rotation torque is also improved.
In addition, the convex strips 8 are
Since it itself bends easily, it also has the effect of lightening the operation when cleaning carpets.

(Sixth Embodiment) A sixth embodiment of the present invention will be described with reference to FIGS. 9 and 10.

The convex band 8 at the end of the holder 7 of the agitator 10 is formed so as to be resistant to deformation and resistant to the inflow of the suction air 11 by partially increasing the thickness or increasing the hardness. A blade portion (air turbine portion) 17 is provided, and the continuous convex band 8 partially (blade portion 17) functions as an air turbine. Further, the suction tool is provided with an inlet A28 only in the front part and at a position facing the blade portion 17, and when the suction tool is placed on the surface to be cleaned, only the inlet A28 separates the outside air and the inside of the dust collecting chamber 4. It is in communication.

The operation will be described with the above-described structure. When the suction wind 11 flows into the dust collecting chamber 4 through the inlets A28 located on both sides of the front part of the suction tool, and when the suction belt 5 flows into the suction port 5, the convex band 8 is formed. Pressure is applied to the blade portion 17. Then agitator 10
Is rotated, and the tip end 37 of the convex strip 8 collides with the surface to be cleaned and scavenges dust adhering to the surface to be cleaned. Since the blade portion 17 is also a part of the convex strip 8, its tip 37 similarly comes into contact with the surface to be cleaned and scrapes up dust. Therefore, the blade 17
Is preferably a flexible material such as rubber so as not to damage the surface to be cleaned. However, in order to rotate the agitator 10, the wall thickness is increased so that the pressure of the suction wind 11 is firmly received, or By increasing the hardness, it is possible to eliminate the rotability of the agitator 10 and the obstacle on the surface to be cleaned when dust is collected.

In the present embodiment, the inlets A28 are provided only on both sides of the front part of the suction tool to accelerate the flow velocity flowing into the blade portion 17 and increase the force of the suction wind 11 received by the blade portion 17. If the suction wind is sucked from the entire front portion of the tool, the pressure of the suction wind 11 other than the blade portions 17 can be received to contribute to the rotation.

(Embodiment 7) A seventh embodiment of the present invention will be described with reference to FIGS.

The convex strip 8 near the suction port 5 of the holder 7 of the agitator 10 is not easily deformed and resists the inflow of the suction air 11 by partially increasing the thickness or increasing the hardness. Blade part (air turbine part) 1
7 is provided, and the continuous convex strip 8 partially (blade portion 17) functions as an air turbine. Further, the suction tool is provided in the front part and only at the position facing the blade portion 17, and when the suction tool is placed on the surface to be cleaned, only the suction port C30 separates the outside air and the inside of the dust collection chamber 4. It is in communication.

The operation will be described with the above structure. The suction wind 11 is introduced from the inflow port C30 near the suction port 5 of the suction tool to the dust collection chamber 4.
When flowing into the inside and flowing into the suction port 5, pressure is applied to the convex strip 8. Then, the agitator 10 rotates and the convex strip 8
The tip end 37 collides with the surface to be cleaned and scrapes up dust adhering to the surface to be cleaned. Since the blade portion 17 is also a part of the convex strip 8, its tip 37 similarly comes into contact with the surface to be cleaned and scrapes up dust. Therefore, the blade 17 is preferably made of a flexible material such as rubber so as not to damage the surface to be cleaned. However, in order to rotate the agitator 10, it is thick enough to receive the pressure of the suction wind 11. By partially increasing the hardness, or partially increasing the hardness, the rotatability of the agitator 10 and the obstacle on the surface to be cleaned during dust collection can be eliminated.

Further, since the highly rigid blade portion 17 is provided on the convex strip 8 near the suction port 5, the convex strip 8 is deformed by a carpet or the like by suction so that the suction port 5 is closed to the carpet or the like. It is also possible to prevent peeling.

In this embodiment, the inlets C30 are provided only on both sides of the front part of the suction tool to accelerate the flow velocity flowing into the blade portion 17 and to strengthen the force of the suction wind 11 received by the blade portion 17. If the suction wind is sucked from the entire front portion of the tool, the pressure of the suction wind 11 other than the blade portions 17 can be received to contribute to the rotation.

(Example 8) An eighth embodiment of the present invention will be described with reference to FIG.

A part of the convex band 8 of the agitator 10, that is, the blade portion 17 is integrally formed by two material molding or the like.
That is, the manufacturing method is adopted in which the inside is integrally formed as the hard portion 15 made of a hard material that is not deformed by the resistance of the suction air 11 and the surface is formed as the soft portion 16 made of a soft material.

The operation in the above construction is the same as in the sixth and seventh embodiments, but the surface is the soft portion 16 and the tip portion 37 which comes into contact with the surface to be cleaned does not have the hard portion 15. The surface is easily deformed, the surface to be cleaned is not damaged, and irregularities on the surface to be cleaned can be easily absorbed by the tip 37.

In this embodiment, the hard material 15 and the soft material 16 are used only for the blades 17, but the two materials may be used for the entire width of the convex band 8.
In this case, it is preferable that the suction wind 11 is configured to flow from the entire front portion of the suction tool.

(Ninth Embodiment) A ninth embodiment of the present invention will be described with reference to FIGS. 13 and 14.

At the end of the agitator 10, blades 17 having an air turbine-like effect, which are radially formed with the same center as the convex band 8, are provided. As described above, the blade portion 17 is made by increasing the wall thickness or partially increasing the hardness, and further by using the two-material constitution shown in the eighth embodiment. Further, the height of the blade 17 is set lower than the height of the convex strip 8 so that the tip of the blade 17 does not contact the surface to be cleaned. Further, although not shown, as shown in the sixth embodiment, when the suction tool is placed on the surface to be cleaned, suction air may be allowed to flow in only from the portion facing the blade portion 17. preferable.

The operation of the above configuration will be described below.
When the suction wind 11 flows into the dust collection chamber 4 through the inlets A28 at both ends of the suction tool and flows into the suction port 5 as in the embodiment of FIG. Join.
Further, since the blade portion 17 is thickened or partially hardened so as to receive the pressure of the suction air 11 in order to rotate the agitator 10, the blade portion 17 which receives the suction air has a blade portion 17 which receives the suction air. To rotate. When the agitator 10 rotates, the convex strip 8 also rotates, and the tip end 37 thereof collides with the surface to be cleaned, so that only dust adhering to the surface to be cleaned is picked up. The convex strip 8 is made of a flexible material such as rubber so as not to damage or harm the surface to be cleaned.

Therefore, the convex strip 8 is made of rubber or the like so that the surface to be cleaned is not hindered, and the entire width of the agitator 10 is arranged to secure the dust collecting property.
The rotation performance of the agitator 10 can be ensured by providing the highly rigid blade portion 17 in addition to the convex band 8 made of rubber or the like that is easily deformed.

(Tenth Embodiment) A tenth embodiment of the present invention will be described with reference to FIGS.

In this embodiment, as shown in the seventh embodiment, a blade portion 17 is provided in the vicinity of the suction port 5 of the agitator 10. The blade portion 17 has a radial shape having the same center as that of the convex band 8. Which has the effect of an air turbine. As described above, the blade portion 17 is made by increasing the wall thickness or partially increasing the hardness, and further by using the two-material constitution shown in the eighth embodiment. Further, the height of the blade 17 is set lower than the height of the convex strip 8 so that the tip of the blade 17 does not contact the surface to be cleaned. Further, although not shown, as shown in the seventh embodiment, when the suction tool is placed on the surface to be cleaned, suction air may be allowed to flow in only from a portion facing the blade portion 17. preferable.

The operation will be described with the above configuration. Like the seventh embodiment, the suction air 11 flows into the dust collecting chamber 4 through the inflow port C30 in the vicinity of the suction port 5 of the suction tool, and enters the suction port 5. When flowing, pressure is applied to the convex strip 8. Also, the blade part 1
In order to firmly receive the pressure of the suction air 11 in order to rotate the agitator 10, the wall 7 is thickened or partially hardened, so that the blade portion 17 also receives the suction air and rotates the agitator 10. When the agitator 10 rotates, the convex strip 8 also rotates, and its tip 37 collides with the surface to be cleaned,
Pick up only the dust adhering to the surface to be cleaned. In addition,
The convex strip 8 is made of a flexible material such as rubber so as not to damage or harm the surface to be cleaned.

Therefore, the convex strip 8 is made of rubber or the like so that the surface to be cleaned is not hindered, and the entire width of the agitator 10 is arranged to ensure dust collecting performance.
The rotation performance of the agitator 10 can be ensured by providing the highly rigid blade portion 17 in addition to the convex band 8 made of rubber or the like that is easily deformed. In addition, the blade 17 having high rigidity
Thereby, even if the convex strip 8 is deformed by the carpet or the like by suction, the suction port 5 can be prevented from being blocked by the carpet or the like.

(Embodiment 11) An eleventh embodiment of the present invention will be described with reference to FIGS. 14 and 16.

The agitator 10 is provided with a radial blade portion 17 having the same center as that of the convex band 8 over the entire width, and the blade portion 17 has an air turbine effect. As described above, the blade portion 17 is made by increasing the wall thickness or partially increasing the hardness, and further by using the two-material constitution shown in the eighth embodiment. Further, the height of the blade 17 is set lower than the height of the convex strip 8 so that the tip of the blade 17 does not contact the surface to be cleaned.

The operation will be described with the above configuration. When the suction air flows into the inside of the dust collecting chamber from at least the front part of the suction tool or both sides of the suction tool, pressure is applied to the convex band 8. Further, the blade portion 17 is thickened or partially hardened so as to receive the pressure of the suction air 11 in order to rotate the agitator 10, so that the blade portion 1
7 also receives suction wind and rotates the agitator 10. When the agitator 10 rotates, the convex strip 8 also rotates and its tip 37
Collides with the surface to be cleaned and picks up only the dust adhering to the surface to be cleaned. The convex strip 8 is made of a flexible material such as rubber so as not to damage or harm the surface to be cleaned.

Therefore, the agitator 10 is the agitator 10.
Since it is rotated by the rotating force of the blade portion 17 configured to have the full width, the dust collecting performance is improved, and since the convex strip 8 is made of rubber or the like, there is no obstacle on the surface to be cleaned. Also,
It is also possible to prevent the suction port 5 from being blocked by the carpet or the like by deforming the convex strip 8 with the carpet or the like by suction, and even when the suction wind 11 is concentrated on a part due to a step or the like on the surface to be cleaned. By constructing the vane portion 17 in the entire width of the agitator 10, the suction wind 11 is surely provided in the vane portion 1
The pressure can be applied to 7 and the rotation of the agitator 10 can be secured.

(Example 12) A twelfth embodiment of the present invention will be described with reference to FIG.

A plurality of rows of convex strips 8 are arranged on the outer periphery of the holder 7 of the agitator 10, and notches are provided in a part of the convex strips 8. For example, the convex band 8 is formed in a substantially V shape at the apex 12 near the center of the outer periphery of the holder 7 in the longitudinal direction,
In order to advance the V-shaped apex 12 with the most delay during rotation, the holder 7 is formed in a symmetrical spiral shape with the vicinity of the longitudinal center of the outer periphery as a boundary.

As shown in FIG. 17, the convex band A46 is provided with a notch A43 and a notch C48, and the adjacent convex band B.
47 is provided with a cutout B44, and on the opposite side of the convex strip B47 from the convex strip A46, a convex strip C49 having a cutout position similar to that of the convex strip A46 is provided. Thus, the outer peripheral surface of the agitator 10 is continuously positioned.

To explain the operation with the above structure, the suction air 11 flows into the inside of the dust collecting chamber 4 from the front part of the suction tool, and first collides with the convex band A46. At this time, the convex band A46 is set at an angle different from the inflow angle of the draft air 11 with respect to the inflow direction when flowing into the suction port 5, so that the pressure of the suction air 11 acts in the direction of the rotational force A33. . Then, suction wind 11
Flows into the suction port 5 side from the notch A43 formed in the convex band A46 and collides with the convex band B47. At this time, since the convex band B47 is set at an angle different from the inflow angle of the suction air 11 when flowing into the suction port 5, the pressure of the suction air 11 acts in the direction of the rotational force B33. Then, after that, it flows into the suction port 5 side from the notch B44,
The suction wind 11 collides with the convex band C45 and the agitator 10 rotates about the rotation axis of the agitator 10 by the same operation as described above. The above operation continuously occurs and the agitator 10 continuously rotates.

Further, when the agitator 10 rotates, the tip of the agitator 10 is in contact with the surface to be cleaned, so that the agitator 10 continuously collides with the surface to be cleaned, and dust on the surface to be cleaned is scraped out.

Therefore, the convex band 8 of the agitator 10 has an effect of scraping out the dust and the role of an air turbine, which is different from the conventional structure, and suction air is provided on the plurality of convex bands 8. The cutout allows the dust to smoothly flow into the suction port side and reliably send dust contained in the suction wind to the suction port 5 side. Further, since suction air 11 flows from the notch of the agitator 10 even on the surface to be cleaned which is strongly attracted, the operability of the suction tool is not impaired by the suction of the suction tool.

(Embodiment 13) A thirteenth embodiment of the present invention will be described with reference to FIGS.

By providing a large-diameter portion 19 in which the outer shape of the convex strip 8 near the suction port 5 is partially enlarged, the dust collecting chamber inner wall 3 is provided.
The gap A24 between 2 and the outer shape of the convex strip 8 is set small.

The operation of the aforesaid configuration will be described. The operation principle of the agitator 10 is the same as that described in the other embodiments.

In this embodiment, by reducing the gap A24, the suction wind 11 leaking from the gap A24 is reduced without giving the action 33 necessary for the agitator 10 rotation to the convex band 8 in the suction wind 11. By doing so, the rotational force of the agitator 10 is improved.

Then, a gap B25 in which dust is unlikely to be caught is set between the outer shape of the convex strip 8 away from the suction port 5 and the dust collecting chamber inner wall 32 to secure the rotational force of the agitator 10. It is possible to eliminate the obstacle of the rotation of the agitator 10 due to the trapping of dust.

(Example 14) A fourteenth embodiment of the present invention will be described with reference to FIG.

By providing the small diameter portion 20 in which the outer diameter of the holder 7 near the suction port 5 is partially reduced, the convex band 8 is formed.
The length A49 is set to be large.

The operation of the aforesaid configuration will be described. The operation principle of the agitator 10 is the same as that already described in the other embodiments.

In this embodiment, by increasing the length A49 of the convex strip 8, the suction becomes stronger on the cleaning surface, such as a thin carpet, having a strong suction, as it becomes closer to the suction port 5 of the dust collecting chamber 4. The length A49 is set so that the convex strip 8 near the suction port 5 is bent more when the carpet is pressed against the convex strip 8 due to suction, thereby preventing the rotation failure of the agitator 10 due to the suction pressure of the carpet. .

Further, even on the surface to be cleaned which is strongly attracted, the dust collection property can be secured by eliminating the obstacle of the rotation of the agitator 10.

(Example 15) A fifteenth embodiment of the present invention will be described with reference to FIG.

The convex strip 8 is provided radially from the holder 7 and further inclined to the side opposite to the direction of rotation (direction of arrow 38).

The operation of the above structure will be described.
When 1 flows into the dust collecting chamber 4 and flows into the suction port 5, pressure is applied to the convex strip 8. However, the convex strip 8 is provided radially from the holder 7 and is inclined further in the rotation direction so that the convex strip 8 may be caught between the outer periphery of the holder 7 and the surface to be cleaned by the pressure generated by the inflow of the suction air 11. By pressing the tip end 37 of the convex band 8 against the floor surface, the force for scraping out the dust on the surface to be cleaned can be improved and the dust collecting performance can be improved.

Further, when the agitator 10 does not rotate on the surface to be cleaned which is strongly attracted, the suction pressure on the suction side 40 increases and the rotational force B33 also improves. Therefore, the effect of scraping out the dust can be improved, and the agitator 10 can rotate firmly even on the surface to be cleaned, which has a heavy load on the rotation of the agitator 10.

(Example 16) A sixteenth embodiment of the present invention will be described with reference to FIG.

The convex strip 8 is provided with a curved portion 23 which is radial from the holder 7 and is curved so as to have a bulge in the rotation direction (arrow 38 direction).

The operation of the above structure will be described.
When 1 flows into the dust collecting chamber 4 and flows into the suction port 5, pressure is applied to the convex strip 8. However, the convex band 8 is provided with the curved portion 23 so as to have a bulge in the rotation direction, and the suction wind 11
The pressure generated by the inflow of the gas concentrates on the curved portion 23, and the agitator 10 can rotate firmly.

(Example 17) A seventeenth embodiment of the present invention will be described with reference to FIG.

In this embodiment, the convex band 8 is provided so as to be inclined toward the rotation direction side of the holder 7 with respect to the radiation passing through the rotation shaft 9 of the holder 7.

With the above structure, the suction wind 11 flows into the dust collecting chamber 4 and flows into the suction port 5 while rotating the agitator 10, but at this time, the convex strip 8 is inclined toward the rotation direction side. Therefore, the tip 37 abuts on the surface to be cleaned so as to catch the surface to be cleaned. Therefore, the dust scraping effect is improved,
Dust collection performance is also improved, and due to the pressure generated by the inflow of suction air 11, the suction pressure on the suction side 40 rises rapidly and the convex band 8 rotates unless the agitator 10 rotates on the surface to be cleaned with strong suction. In this direction, the resistance between the cleaning surface and the tip of the convex strip 8 disappears, and the agitator 10 can rotate firmly even on the surface to be cleaned with a large load.

(Embodiment 18) An eighteenth embodiment of the present invention will be described with reference to FIGS. The same parts as those in the above embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In this embodiment, a plurality of recesses 25 for communicating the outside air with the dust collecting chamber 4 are arranged in the longitudinal direction of the front part of the suction tool, and the suction tool is placed on the surface to be cleaned as shown in FIG. At this time, a slight gap A24 is set between the surface to be cleaned and each recess 25.

With the above construction, especially when cleaning the carpet, the gap between the concave portions 25 and the surface to be cleaned is smaller than the gap in the concave portions 25, so that the carpet hair is laid down at that portion, and the convex shape is thereby formed. The load applied to the belt 8 is reduced.

On the other hand, from the recesses 25, the outside air is exposed to the dust collecting chamber 4
As it injects into the inside and hits the convex band 8, a strong rotational force is applied to the agitator 10, and the suction tool is attracted to the carpet so that the agitator 10 does not rotate, or
It is possible to prevent the number of revolutions from greatly decreasing.

(Embodiment 19) A nineteenth embodiment of the present invention will be described with reference to FIGS. 25 and 26.

On the lower surface side of the suction tool, an opening A60 communicating with the outside air having a size equal to or larger than the cross-sectional area A26 of the pipe-shaped passage 6 is provided between the outer shape of the convex band 8 and the suction port 5.

The operation of the above structure will be described. The suction air generated by the main body of the electric vacuum cleaner sucks the air in the dust collecting chamber 4 through the pipe-shaped passage 6. In this state, when the suction tool is located in the air, as described above, the cross-sectional area A26 of the pipe-shaped passage 6 is provided between the outer shape of the convex band 8 and the suction port 5.
By setting the opening A60 communicating with the outside air equal to or more than the above, the suction air flows in through the opening A60, so that there is almost no suction air flowing after colliding with the convex band 8.

Therefore, the agitator 10 does not rotate, and the rotation noise generated by the rotation of the agitator 10 does not occur.
Further, it is also possible to prevent the generation of wind noise caused by the suction wind being blocked by the convex band 8, and it is possible to reduce the noise due to suction.

(Example 20) A twentieth embodiment of the present invention will be described with reference to FIG.

When the suction belt is present on the surface to be cleaned, the convex strip 8 is provided between the plurality of inlets A28, inlets B29, C30, and the inlet 5 through which the outside air flows into the dust collecting chamber 4. An angle close to a right angle is set at any position with respect to the connecting straight line.

The operation of the aforesaid configuration will be described. The operation principle of the agitator 10 is the same as that described in the other embodiments.

In this embodiment, the inflow port A28 and the inflow port B2 are used.
9. By setting the angle close to a right angle at any position with respect to the straight line connecting the inflow port C30 and the suction port 5, the pressure of the suction wind 11 acting on the convex band 8 can be efficiently applied. It can be used as the rotational force.

(Example 21) A twenty-first embodiment of the present invention will be described with reference to FIG.

The gap 31 between the outer shape of the convex strip 8 and the inner wall of the dust collecting chamber 4 is 0.5 to 2.8 mm.

The operation of the aforesaid configuration will be described. When the gap 31 becomes 0.5 mm or less, the agitator 10 is operated.
Rotation of the convex band 8 causes pressure-contact with the dust collecting chamber inner wall 32 due to an assembly error of the convex band 8 or expansion of the convex band 8 due to temperature,
The agitator 10 stops rotating. In addition, the gap 31
If the width exceeds 2.8 mm, the width of the suction tool has recently increased to 2
In many cases, the width of the dust collecting chamber 4 in the suction tool is about 250 mm, and if there is a gap of 3 mm between the agitator 10 and the dust collecting chamber inner wall 32, the cross-sectional area B27 is 250 × 2. .8 = 700
It will be a square millimeter.

The passage 6 is generally φ3.
The cross-sectional area A26 is about 0 mm and is 15 × 15 ×
Since π = 706.5 and the cross-sectional area B27 of the gap 31 is substantially equal to the suction airflow 11 from the passage 6, all the suction air 11 can pass through the gap 31, and the rotational force applied to the convex strip 8 is almost eliminated, and the agitator 10 rotates. do not do.

Therefore, the rotation of the agitator 10 can be ensured by setting the cross-sectional area B27 of the gap 31 within the range of 0.5 to 2.8 mm.

(Example 22) A twenty-second embodiment of the present invention will be described with reference to FIG.

One end of a hose 67 is connected to the suction port of an electric vacuum cleaner body 64 having a dust chamber 66 for collecting dust inside and an electric blower 65, and an extension pipe 68 is connected to the other end of the hose 67. Further, the suction tool F for the electric vacuum cleaner is connected to the tip end side of the extension pipe 68. The suction tool F for the electric vacuum cleaner is shown in the first to twenty-first embodiments, and the suction force is applied from the electric blower 65 to the hose 67 and the extension pipe 6.
8 to act on the suction tool F, rotate the agitator 10 in the suction tool F, and generate suction air for sucking dust.

[0122]

As described above, according to the first aspect of the present invention.
According to the described invention, a dust collecting chamber having an opening provided below,
An agitator rotatably arranged in the dust collection chamber, a pipe connected to the suction port side of the cleaner body, a passage provided at the tip side of the pipe and communicating with the dust collection chamber, and a tip of the passage. Provided with a suction port communicating with the dust collection chamber and the lower opening, provided with a plurality of convex strips constituting the dust scraping portion provided on the peripheral surface of the agitator, the convex strip is The convex band receives the suction air and is disposed at an angle different from the inflow angle of the suction air that flows into the dust collecting chamber when the lower side of the opening is covered with the surface to be cleaned. While rotating the, by disposing an opening communicating with the outside air having a cross-sectional area equal to or larger than the cross-sectional area of the passage in the pipe between the outer shape of the convex band and the suction port, when the suction tool is positioned in the air. , Most of the suction air comes from the opening to the pipe Since the agitator is not rotated in order to enter, the suction device is designed to have an opening between the outer shape of the convex band and the suction port, which is equal to or larger than the cross-sectional area of the pipe-shaped passage and communicates with the outside air. When the vehicle is located in the air, the agitator does not rotate, the rotation noise generated by the rotation of the agitator is not generated, and the wind noise generated by the suction wind being blocked by the convex band can be prevented. Yes, noise due to suction can be reduced.

According to the second aspect of the present invention, since the convex strips are arranged radially around the rotation axis of the agitator, the convex strips are more likely to receive the suction air, and the rotational force of the agitator is increased. Can be increased.

According to the third aspect of the present invention, since the convex strips are arranged over substantially the entire width direction of the agitator, suction wind is received by the convex strips in the full width direction of the agitator, and the agitator The turning force can be increased.

According to the fourth aspect of the present invention, the convex band is arranged so as to project from the lower opening of the dust collecting chamber, and the tip side thereof comes into contact with the surface to be cleaned. The belt receives the suction air to rotate the agitator, and the tip end of the belt comes into contact with and collides with the surface to be cleaned, so that dust on the surface to be cleaned can be scraped up.

According to the invention of claim 5 of the present invention, the role of an air turbine, which has been conventionally configured differently, can also be provided in accordance with the effect of scraping out dust from the conventional one on the convex band of the agitator. Further, when the suction tool is viewed from the bottom surface, a convex band is formed in the longitudinal direction of the agitator so that a vertex in a substantially V shape is located near the center in the longitudinal direction of the outer circumference of the agitator. When the agitator rotates, the apex part of the V-shape of the convex band advances so as to lag behind the rotation direction, so that the direction of the suction wind is directed toward the suction port by the convex band. It can be changed, and dust can be easily guided to the suction port together with the suction wind, and the dust collection performance can be improved.

According to the sixth aspect of the present invention, the effect of scraping dust from the conventional one on the convex band of the agitator,
It can also serve as an air turbine, which has been configured differently in the past. Furthermore, since the part near the center of the agitator in the longitudinal direction is formed as a convex band, the suction wind is a straight line of the convex band. Since it intersects the shape part at a right angle,
The pressure of the suctioned air from the front part can be efficiently converted into a rotational force, the rotational force of the agitator is improved, and strong continuous rotation can be performed.

According to the invention of claim 7 of the present invention, the effect of scraping dust from the conventional one on the convex band of the agitator,
It can also serve as an air turbine, which has been configured differently in the past. Furthermore, since the convex band is provided in parallel with the rotation axis of the agitator and over the entire width, the object to be cleaned that has a heavy load on the rotation of the agitator. In terms of surface, the agitator can rotate well, and can clean a wide variety of surfaces to be cleaned.

According to the eighth aspect of the present invention, the effect of scraping dust from the conventional one on the convex band of the agitator,
It can also serve as an air turbine, which has been configured differently in the past. Furthermore, since the convex band is formed in a spiral shape with respect to the rotation axis of the agitator, the operability is better than that of the V-shaped convex band. Can be increased.

According to the invention of claim 9 of the present invention, since the notch or notch is provided in a part of the convex band, the sucked dust and the like can be smoothly poured into the suction port side, and the suction can be performed. The dust contained in the wind can be reliably sent to the suction port side. In addition, since suction air flows from the notch even on the surface to be cleaned which is strongly attracted, the operability of the suction tool is not impaired by the suction of the suction tool.

According to the invention of claim 10 of the present invention,
Since the outer diameter of the convex band near the suction port was partially enlarged,
It is possible to set a gap between the outer shape of the convex band away from the suction port and the inner wall of the dust collecting chamber so that it is difficult for dust to be caught.
Since it is possible to secure the rotational force of the agitator and eliminate the obstacle of the rotation of the agitator due to the trapping of dust, it is possible to provide a highly reliable suction tool for an electric vacuum cleaner.

According to the invention of claim 11 of the present invention,
Since the outer diameter of the agitator near the suction port is partially reduced, it can be set so that the convex band near the suction port bends more, and the surface to be cleaned such as a carpet strongly presses the convex band near the suction port. Even if the rotation of the agitator can be prevented, the obstacle of the rotation of the agitator can be eliminated even on the surface to be cleaned with strong suction, so that the dust collecting performance on various surfaces to be cleaned can be secured.

According to the twelfth aspect of the present invention,
Since the convex band is provided radially with respect to the rotation axis of the agitator and is inclined in the rotation direction, the effect of scraping out dust can be improved, and the agitator can be used even on the surface to be cleaned that has a heavy load on the rotation of the agitator. Can rotate firmly, and can improve the dust collecting property.

According to the invention of claim 13 of the present invention,
Since the convex strip is provided so as to be radial with respect to the rotation axis of the agitator and curved so as to have a bulge in the rotation direction,
The pressure generated by the inflow of suction air concentrates on the curved portion, and the agitator can rotate firmly, so that the rotation performance of the agitator can be improved.

According to the fourteenth aspect of the present invention,
Since the convex band is provided radially with respect to the rotation axis of the agitator and is inclined in the direction opposite to the rotation direction, the dust collecting performance can be improved, and the pressure generated by the inflow of suction air causes The agitator can rotate firmly on the surface to be cleaned, which has strong suction, and it can provide a suction tool for vacuum cleaners that supports a wide variety of surfaces to be cleaned.
is there.

[Brief description of drawings]

FIG. 1 is a bottom view of a vacuum cleaner suction tool according to a first embodiment of the present invention.

FIG. 2 is a central sectional view of the suction device.

FIG. 3 is a view showing an agitator of the suction device.

FIG. 4 is a sectional view of an agitator of the suction device.

FIG. 5 is a bottom view of the vacuum cleaner suction tool according to the second embodiment of the present invention.

FIG. 6 is a bottom view of the vacuum cleaner suction tool according to the third embodiment of the present invention.

FIG. 7 is a bottom view of the vacuum cleaner suction tool according to the fourth embodiment of the present invention.

FIG. 8 is a bottom view of the vacuum cleaner suction tool according to the fifth embodiment of the present invention.

FIG. 9 is a bottom view of the suction device for the electric vacuum cleaner according to the sixth embodiment of the present invention.

FIG. 10 is a sectional view of an agitator of the suction device.

FIG. 11 is a bottom view of the vacuum cleaner suction tool according to the seventh embodiment of the present invention.

FIG. 12 is a sectional view of an agitator showing an eighth embodiment of the present invention.

FIG. 13 is a diagram showing an agitator according to a ninth embodiment of the present invention.

FIG. 14 is a sectional view of an agitator according to ninth to eleventh embodiments of the present invention.

FIG. 15 is a diagram showing an agitator according to a tenth embodiment of the present invention.

FIG. 16 is a view showing an agitator according to an eleventh embodiment of the present invention.

FIG. 17 is a bottom view of the suction device for the electric vacuum cleaner according to the twelfth embodiment of the present invention.

FIG. 18 is a bottom view of the suction device for the electric vacuum cleaner according to the thirteenth embodiment of the present invention.

FIG. 19 is a bottom view of the suction device for the electric vacuum cleaner according to the fourteenth embodiment of the present invention.

FIG. 20 is a central cross-sectional view of a suction device for a vacuum cleaner showing a fifteenth embodiment of the present invention.

FIG. 21 is a central cross-sectional view of a suction device for a vacuum cleaner showing a sixteenth embodiment of the present invention.

FIG. 22 is a central cross-sectional view of a suction device for a vacuum cleaner showing a seventeenth embodiment of the present invention.

FIG. 23 is a bottom view of the suction device for the electric vacuum cleaner according to the eighteenth embodiment of the present invention.

FIG. 24 is a front view of the suction device.

FIG. 25 is a central cross-sectional view of the suction device for the electric vacuum cleaner according to the nineteenth embodiment of the present invention.

FIG. 26 is a bottom view of the suction device.

FIG. 27 is a bottom view of the suction device for the electric vacuum cleaner according to the twentieth embodiment of the present invention.

FIG. 28 is a central cross-sectional view of the suction device for the electric vacuum cleaner according to the twenty-first embodiment of the present invention.

FIG. 29 is an overall view of a vacuum cleaner showing a twenty-second embodiment of the present invention.

FIG. 30 is a bottom view of a conventional vacuum cleaner suction tool.

FIG. 31 is a sectional view of the suction device.

[Explanation of symbols]

3 Lower opening 4 Dust collection chamber 5 suction port 10 agitator 12 vertices 13 Straight section 15 Hard part 16 Soft part 17 Feather part 19 large part 20 small diameter part 23 Curved part 24 Gap A 25 Gap B 26 cross section A 27 cross section B 32 Dust collection indoor wall 43 Notch A 44 Notch B

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsutaka Murata 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Hidenori Kitamura 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. (72) Inventor Kao Suo 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor, Masakuni Soejima 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. (72) Invention Tetsuo Imai 1006 Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor, Hayashi Seiko, 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) Reference: Japanese Patent Laid-Open No. 6 -142018 (JP, A) JP 9-28631 (JP, A) JP 9-75273 (JP, A) JP 7-171082 (JP, A) JP 2-104321 (JP, A) JP-A-4-89018 (JP, A) Actual opening 4-349 (JP, U) Actual opening 2-8349 (JP, U) Actual opening Sho 61-10161 (JP, U) Actual Kaisha 52-112159 (JP, U) International publication 96/28081 (WO, A1) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47L 9/04

Claims (15)

(57) [Claims] 1. A dust collecting chamber having a lower opening, an agitator rotatably disposed in the dust collecting chamber, a pipe connected to a suction port side of a cleaner body, and a tip end side of the pipe. Has a passage communicating with the dust collecting chamber and a suction port communicating with the dust collecting chamber and the lower opening provided on the tip side of the passage, and dust scooping provided on the peripheral surface of the agitator. A plurality of convex strips forming a part, and the convex strips are arranged at an angle different from the inflow angle of the suctioned air flowing into the dust collecting chamber when the lower side of the opening is covered with a surface to be cleaned. That is, the convex strip receives the suction wind to rotate the agitator, and between the outer shape of the convex strip and the suction port, the outside air is equal to or larger than the cross-sectional area of the passage in the pipe. By arranging the opening to communicate, when the suction tool is positioned in the air, Most of the sucked air flows into the pipe through the opening, so that the suction tool for the electric vacuum cleaner does not rotate the agitator. 2. The suction tool for a vacuum cleaner according to claim 1, wherein the convex strips are arranged radially around a rotation axis of the agitator. 3. The suction tool for an electric vacuum cleaner according to claim 1, wherein the convex band is arranged over substantially the entire width direction of the agitator. 4. The electric cleaning according to claim 1, wherein the convex strip is arranged so as to project from the lower opening of the dust collecting chamber, and the tip side of the convex strip contacts the surface to be cleaned. Machine suction tool. 5. When the suction tool is viewed from the bottom, a convex band is formed in the longitudinal direction of the agitator in such a manner that a substantially V-shaped vertex is located near the center of the outer circumference of the agitator in the longitudinal direction. The vacuum cleaner according to any one of claims 1 to 4, wherein, when the agitator rotates, the substantially V-shaped apex of the convex band advances with the latest delay with respect to the rotation direction. Suction tool. 6. The suction tool for an electric vacuum cleaner according to claim 5, wherein a part of the convex band near the center in the longitudinal direction of the agitator is formed in a linear shape parallel to the rotation axis of the agitator. 7. The suction tool for an electric vacuum cleaner according to claim 1, wherein the convex band is formed in a linear shape parallel to the rotation axis of the agitator. 8. The suction tool for an electric vacuum cleaner according to claim 1, wherein the convex band is formed in a spiral shape with respect to a rotation axis of the agitator. 9. The suction tool for an electric vacuum cleaner according to claim 1, wherein a notch or notch is provided in a part of the convex band. 10. The suction tool for an electric vacuum cleaner according to claim 1, wherein the outer shape of the convex band near the suction port is partially enlarged in diameter. 11. The suction tool for an electric vacuum cleaner according to claim 1, wherein the outer shape of the agitator near the suction port is partially reduced in diameter. 12. The suction device for an electric vacuum cleaner according to claim 1, wherein the convex strips are arranged radially with respect to a rotation axis of the agitator and are inclined with respect to a rotation direction. Ingredient 13. The electric cleaning device according to claim 1, wherein the convex strip is arranged in a radial pattern with respect to a rotation axis of the agitator and is curved so as to have a bulge in a rotation direction. Machine suction tool. 14. The electric vacuum cleaner according to claim 1, wherein the convex strips are arranged radially with respect to the rotation axis of the agitator, and are provided so as to be inclined in a direction opposite to the rotation direction. Suction tool. 15. A built-in electric blower, as claimed in any one of claims 1 to 1.
The vacuum cleaner provided with the suction port connected so that it may connect with the suction tool for vacuum cleaners in any one of 4 above.