JPH11197066A - Suction tool for cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To drive a rotational brush by an enough rotational force even when a highly resistant face to be cleaned such as a carpet is cleaned. SOLUTION: A suction tool main body 1 having a suction hole 7 on its underside, a rotational brush storing room 8 formed in this suction tool main body 1 and a rotational brush 11 facing to the suction hole 7 and freely rotatably stored in the rotational brush storing room 8 are provided and an air intake path 26 for taking open air into the rotational brush storing room 8 is formed in the suction tool main body 1 and guides (the first and the second ribs 21 and 22) for guiding the open air sucked from this air intake path 26 to blades 15 of the rotational brush 11 are formed and a thin part whose thickness is thinner than those of other parts is formed on the base part of each blade 15 of the rotational brush 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a suction device for a vacuum cleaner such as a floor suction device used in connection with a vacuum cleaner.

[0002]

2. Description of the Related Art Heretofore, as a floor suction tool of this type, there has been known a suction tool which rotatably supports a rotary brush on a suction tool body and drives the rotary brush to rotate by an electric motor or a turbine.

However, when the rotating brush is driven to rotate by an electric motor, the electric motor is heavy, the handleability at the time of cleaning operation is poor, the number of parts increases, the assembly workability is poor, and the cost is high. There were drawbacks.

[0004] When the rotary brush is driven to rotate by a turbine, the turbine is disposed in a turbine chamber formed in a suction passage from a suction port to a cleaner body, and is rotated by air sucked together with dust. Due to the configuration, there is a problem that dust is clogged in the turbine due to long-term use, and the turbine does not rotate properly.

Therefore, in order to solve the above-mentioned drawback, turbines are arranged at both ends of a rotating brush in Japanese Patent Application Laid-Open No. 9-28630 (A47L9 / 04) or the like, and external clean air is supplied to the turbines. , And suction the air into a vacuum cleaner together with the air sucked from a suction port.

[0006]

However, in the above-described apparatus in which the rotary brush is driven to rotate by using the suction air, since the rotational force has a limit, the cleaning of a carpet or the like with hairy feet is difficult. When cleaning the surface, the tip of the carpet or the like to be sucked comes into contact with the blade of the rotating brush, causing a large resistance (rotational load), and there is a problem that a sufficient rotating force (rotational speed) cannot be obtained. In consideration of such points, the blade of the rotating brush is generally formed of a material such as soft rubber having elasticity. However, if the material itself is made too soft, the whole becomes softer, and the blade is inherently softer. The effect of dusting such as lint on the carpet, which is the effect of the above, is impaired.

Accordingly, the present invention has been made to solve such a problem, and a cleaner capable of driving a rotating brush with a sufficient rotational force even when cleaning a surface to be cleaned having a large resistance such as a carpet. It is an object of the present invention to provide a suction tool for use in a vehicle.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a suction tool main body having a suction port on a lower surface, a rotary brush storage chamber formed in the suction tool main body, and A rotating brush housed in the rotating brush storage chamber facing the suction port and driven to rotate using suction air, wherein a thinner portion having a smaller thickness at the root portion of the blade of the rotating brush than at other portions is provided. It is characterized by having been formed.

A suction tool main body having a suction port on a lower surface, a rotary brush storage chamber formed in the suction tool main body, and a rotation rotatably stored in the rotary brush storage chamber facing the suction port. A suction path for taking in outside air into the rotating brush storage chamber, and a guide for guiding the outside air sucked from the suction path to the blades of the rotating brush. A thin portion having a smaller thickness than other portions is formed at a root portion of the brush blade.

A suction tool main body having a suction port on the lower surface, a rotary brush storage chamber formed in the suction tool main body, and a rotary brush storage chamber facing the suction port and disposed at both ends. A rotating brush that is driven to rotate by sucking outside air to the turbine, wherein a thinner portion is formed at a root portion of a blade of the rotating brush, the portion being thinner than other portions.

A suction tool main body having a suction port on a lower surface, a rotary brush storage chamber formed in the suction tool main body, and a rotary brush storage chamber facing the suction port and disposed at both ends. A rotating brush driven to rotate by suctioning outside air to the turbine, wherein an intake path for taking in outside air into the rotating brush storage chamber is formed in the suction tool main body, and the outside air sucked from the intake path is rotated by the rotating brush. A guide for guiding the rotating brush is formed, and a thinner portion having a smaller thickness than other portions is formed at a root portion of the blade of the rotating brush.

Further, the blade is characterized in that a convex portion extending in the longitudinal direction is formed on the blade surface.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a floor suction device of a vacuum cleaner will be described in detail with reference to FIGS.

As shown in FIG. 1 and the like, a suction tool main body 1 of the present embodiment comprises an upper case 2, a lower case 3, a lid 4 detachably attached to the upper case 2 and the lower case 3, It comprises a rotating tube 5 rotatably supported in the vertical direction between the cases 2 and 3, and a joint tube 6 rotatably supported in the circumferential direction of the rotating tube 5.

On the bottom surface of the suction tool main body 1, a suction port 7 is formed over substantially the entire width in the longitudinal direction. Inside the suction tool main body 1, a substantially cylindrical rotating brush storage chamber 8 is formed.

As shown in FIG. 2, on both sides in the longitudinal direction of the suction tool main body 1, there is formed a cylindrical shaft support 9 for rotatably supporting a front wheel 27 described later. A partition rib 10 erected on the lower case 3 and hung from the lid 4 is located inside the two shaft supports 9, and separates the shaft support 9 and the rotary brush storage chamber 8 from each other. The outside air is prevented from being sucked into the rotating brush storage chamber 8 through the shaft supporting portion 9.

A rotating brush 11 is rotatably housed in the rotating brush storage chamber 8 so as to face the suction port 7. Note that no turbine is provided at both ends of the rotating brush 11, and the rotating brush 11 is driven to rotate by a configuration described later.

As shown in FIG. 3, the rotating brush 11 has a core 12 and a spiral 4 formed on the core 12.
The base 14 is inserted into the groove 13 of each book and is attached.
And a plurality of blades 15.

The core body 12 is formed by extruding aluminum, and the four grooves 13 arranged at equal intervals are formed in a helical shape such that they are shifted from each other by about 90 °. Therefore, the four blades 15 inserted into these grooves 13 also have a similar spiral shape, and the four blades 15 are arranged symmetrically at equal intervals to improve the balance during rotation. It is configured to rotate smoothly.

Each of the blades 15 is made of a non-breathable material having soft elasticity, specifically, soft polyvinyl chloride (PV).
C) or soft rubber (for example, urethane rubber)
It is formed integrally with the base 14. A thin portion 15a is formed in a root portion on the opposite side to the rotation direction (counterclockwise direction in the drawing) of each blade 15 so as to go down in an arc shape so as to be thinner than other portions. . Further, a plurality of convex portions 15b and 15c extending in the longitudinal direction are formed on both surfaces of the blade on the tip side from the thin portion 15a.

On the other hand, a guide port 20 is formed on the upper surface of the lid 4 so as to cover almost the entire width of the blade 15 of the rotary brush 11 in the longitudinal direction. On the front side of the guide port 20, a first rib 21 forming a guide for guiding outside air sucked from the guide port 20 to the blade 15 of the rotating brush 11 is formed. The first rib 21 is formed so as to hang slightly from the rear surface side of the lid 4 toward the rotation center from the foremost position of the rotation trajectory of the blade 15 and extend to a position where it does not contact the rotation trajectory of the blade 15. I have.

Also, a second rib 22 is formed on the rear side of the guide port 20 to form a guide for guiding the outside air sucked from the guide port 20 to the blade 15 of the rotating brush 11. The second rib 22 extends from the center of rotation of the rotating brush 11 to the front side and has a tip bent downward, and a discharge port 23 is formed between the tip of the first rib 21 and the second rib 22. It is supposed to be.

The upper part of the discharge port 23 is covered with a cover 24 so that the discharge port 23 is not directly visible from outside. The cover body 24 is attached to the lid body 4 by locking the front and rear locking claws 25 into the claw holes 25a formed in the upper edge of the first rib 21 and the second rib 22. ing. Lid 4 with this cover 24 attached
Are knobs 4a provided on both sides thereof, as shown in FIG.
Can be removed by operating the outside, and when the cover 4 is removed, the rotating brush 11 and the like can be maintained as shown in FIG.

The above-described guide port 20, first rib 21, second
An intake path 26 is formed by the ribs 22 and the cover body 24, and the intake path 26 is configured so that the width gradually decreases from the guide port 20 to the discharge port 23.

On the other hand, the front wheel 2 mounted on the shaft support 9
Reference numeral 7 is formed to have substantially the same diameter as the external shape of the suction tool main body 1 formed in a substantially cylindrical shape. On the other hand, the suction tool body 1
A rear wheel 28 having a small diameter is rotatably supported at the rear portion. A suction keeper 29 made of soft rubber or the like is provided before and after the suction port 7.
The suction keeper 29 improves the deep suction force. Further, a bumper 30 made of soft rubber or the like is provided on the front surface of the suction tool main body 1 having a substantially cylindrical shape. The tool body 1 itself can be prevented from being damaged.

When the above-described joint pipe 6 of the suction tool main body 1 is connected to a cleaner body (not shown) via a flexible hose and an extension pipe, and the electric blower of the cleaner body is driven, the suction port 7 is opened. Air is sucked. When the suction tool main body 1 is lifted from the surface to be cleaned, most of the air is sucked from the suction port 7 because the suction resistance from the suction port 7 is small. In this state, since the suction port 7 is largely open, the flow velocity of the air sucked from the suction port 7 is relatively low,
Therefore, the rotating brush 11 hardly rotates.

When cleaning the surface to be cleaned, such as a carpet, which has hairy feet, the suction port 7 is covered with the surface to be cleaned, the air intake resistance from the suction port 7 increases, and the outside air sucked from the guide port 20 is sucked. The amount increases. Since the discharge port 23 has an extremely small opening area as compared with the suction port 7, air sucked from the discharge port 23 flows to the blade 15 of the rotating brush 11 at a higher flow rate than the above-described suction port 7. Collision causes the rotating brush 11 to rotate counterclockwise in FIG.

Here, the first port located in front of the discharge port 23
As described above, the rib 21 is formed so as to hang slightly from the forefront position of the rotation locus of the blade 15 toward the center of rotation, so that the external air sucked from the discharge port 23 does not collide with the blade 15 and It can be guided to the blade 15 while preventing it from turning forward, and the rotating brush 11 can be driven to rotate efficiently.

Similarly, the second port located behind the discharge port 23
Since the ribs 22 also extend from the rotation center of the rotating brush 11 to the front side and are bent downward at their tips, the outside air sucked from the discharge port 23 does not collide with the blade 15 and is located above the rotating brush 11. Can be prevented from being directly sucked into the rotating pipe 5 through the rotating pipe 5 and can be reliably guided to the blade 15, so that the rotating brush 11 can be efficiently driven to rotate.

The outside air from the guide port 20 is discharged to the discharge port 23.
The intake path 26 leading to the discharge port 23 is configured so as to be gradually narrowed toward the discharge port 23, so that the generation of noise due to a change in the area of the ventilation path is reduced, and the outside air colliding with the blade 15 from the discharge port 23 is reduced. Rotating brush 1
1 can improve the rotation efficiency.

Further, since the rotary brush storage chamber 8 is formed in a substantially cylindrical shape, the first rib 21 and the second rib
Since the outside air guided by the blade 2 and colliding with the blade 15 does not diverge, the air wraps around smoothly and continues to give a rotational force,
The rotary brush 11 can be driven to rotate more efficiently.

Further, since the guide passage 20 is provided on the upper surface of the suction tool main body 1, the suction passage 26 is not obstructed by a wall or the like when cleaning a wall or the like. The rotational force can always be applied at a good flow rate.

Further, since the blade 15 is formed of a non-breathable material such as soft PVC, the sucked air acts without waste and can apply a large rotating force to the rotating brush 11. In addition, since the blade 15 is formed with a convex portion 15b extending in the longitudinal direction on the blade surface against which the outside air collides, this serves to increase the air resistance and increase the rotational force.

Further, since the blade 15 is formed with a convex portion 15c extending in the longitudinal direction also on the blade surface which is in contact with the carpet surface, the blade 15 has a function of pushing out and scraping dust such as lint and the like embedded in the carpet. Can be improved.

As a secondary effect, by sucking air from the guide port 20, the suction tool main body 1 is prevented from excessively sticking to a surface to be cleaned such as a carpet, and the mobility of the suction tool main body 1 is reduced. Can be improved.

When cleaning a carpet or the like as described above, the surface to be cleaned with hairy feet acts as a resistance and the rotation speed of the rotating brush 11 tends to decrease. 15 itself has soft elasticity, and a thin portion 15a is formed at the base portion thereof, so that when it hits the tip of a carpet or the like, it easily bends so as to escape without resistance to the rear side in the rotation direction with ease, The contact resistance is reduced, so that the rotation speed can be prevented from lowering. Even on a carpet with a large resistance, the carpet can be driven to rotate with a sufficient rotation force (rotation speed).

According to the floor suction device of the present embodiment,
Since the rotary brush 11 can be efficiently rotated and driven only by the blades 15 without providing turbines at both ends of the suction tool main body 1, the floor suction tool can be reduced in weight and size and cost can be reduced. Further, since there is no turbine at both ends of the rotating brush 11, the suction port 7 can be formed over substantially the entire width of the bottom surface of the suction tool main body 1, so that dust such as lint does not remain.

If the rotating brush 11 is driven to rotate without using the turbine, the rotating force cannot be obtained as much as the turbine. Therefore, as described above, the thin portion 15a is formed at the root of the blade 15 to reduce the resistance of the carpet or the like. It is particularly effective to make it easy to rotate even on a large surface to be cleaned.

In the above embodiment, the case where the present invention is applied to a floor suction tool has been described. However, as described above, a turbine is not required, so that cost can be reduced, and the suction tool is lightweight and compact. Is possible,
It is also effective when applied to a sofa, a curtain, or a suction tool used for bedding.

FIGS. 6 to 9 show another embodiment of the present invention, in which the same reference numerals as those of the above-mentioned embodiment indicate the same or corresponding parts. Since the configuration of the rotating brush 11 is the same as that of the above-described embodiment, a diagram corresponding to FIG. 3 of the above-described embodiment is omitted.

In the above-described embodiment, the rotary brush 11 is driven to rotate without using the turbine. In this embodiment, the rotary brush 11 is driven to rotate using the turbine of the above-described embodiment in combination with the turbine. ing.

That is, as shown in FIG. 7, turbines 31 which are coaxially and integrally rotated with the rotating brush 11 are attached to both ends of the rotating brush 11. As shown in FIG. 8, the rotating blades 32 of the turbine 31 efficiently receive the outside air sucked from the openings 4b formed by a large number of pores at both ends of the upper surface of the lid 4, and It is formed so as to rotate in the same direction (counterclockwise in FIG. 6) as in the above embodiment. The outside air sucked from the opening 4b is provided on the back side of the opening 4b.
Are formed (not shown) for guiding the rotor blades 32 in the direction (forward).

With the above configuration, in addition to substantially the same operation and effect as the above-described embodiment, the turbine 31 and the suction air from the intake passage 26 are applied to the blade 15 and the blade 15 is formed at the root portion. The rotating brush 11 can be driven to rotate at high speed even on a surface to be cleaned having a large resistance such as a carpet with a long bristle, and the efficiency of collecting dust such as lint is further improved by the synergistic action with the thinned portion 15a. I do.

In each of the above embodiments, the rotating brush 1
Although the same blades 15 are provided in 1, two of them at the symmetrical position may be made into a brush body, which further improves the scraping performance of dust such as lint on the carpet. can do. Also, the number of sheets is not limited to four, but if the number of sheets is increased too much, the interval between them becomes narrower, and the area where the sucked outside air hits becomes smaller. Also, four sheets are optimal.

In each of the above embodiments, each blade 1
5, a thin portion 15a is formed at the root portion opposite to the rotation direction so as to go down in an arc shape so as to be thinner than other portions, but is formed on the same side as the rotation direction or on both sides. It may be formed, and substantially the same effect can be obtained.

Further, in each of the above-described embodiments, the guide opening 20 is formed on the upper surface of the lid 4 to provide the air intake passage 26. However, without forming such a guide opening 20, the suction tool main body 1 may be provided.
The gap between the front bottom surface and the surface to be cleaned may be wider than the other, and the gap may be used as an intake path. In this case, if a guide is formed at the front edge of the suction port 7 to guide the outside air sucked from the front gap to the blade 15 below the rotation center of the rotating brush 11, the rotating brush 11 can be efficiently rotated. Can be.

[0047]

As described above, according to the present invention, a thin portion having a smaller thickness than the other portions is formed at the root portion of the blade of the rotating brush, so that when the blade hits the tip of a carpet or the like, it rotates. Since it easily bends so as to escape to the rear side with no resistance in the direction, the contact resistance is reduced, and a decrease in the number of rotations can be prevented. Therefore, the rotating brush can be driven with a sufficient rotational force even when cleaning a surface to be cleaned having a large resistance such as a carpet.

In addition, the suction tool main body is formed with an intake passage for taking in outside air into the rotating brush storage chamber, and a guide for guiding the outside air sucked from this intake passage to the blade of the rotating brush is formed. By forming a thinner portion at the root portion of the blade that is thinner than other portions, in addition to the above-described effects, the rotary brush can be driven to rotate without having turbines at both ends of the rotary brush. The components can be reduced in weight and size and cost can be reduced. Further, since there is no turbine at both ends of the rotary brush, the suction port can be formed over substantially the entire width of the bottom surface of the suction tool main body, so that dust such as lint does not remain. When the rotating brush is driven to rotate without using the turbine, the rotating force is not as high as that of the turbine. Therefore, as described above, a thin portion is formed at the root of the blade to rotate even on a surface to be cleaned such as a carpet having a large resistance. Making it easier is particularly effective.

Also, in a rotating brush driven by suctioning outside air to turbines provided at both ends of the rotating brush, a thinner portion is formed at the root portion of the blade of the rotating brush, the thickness being thinner than other portions. By doing so, as described above, when the blade hits the tip of a carpet or the like, the blade easily bends backward without any resistance in the rotation direction, so that the contact resistance is reduced and the rotation speed is prevented from lowering. This makes it possible to drive the rotating brush with a sufficient rotational force even when cleaning a surface to be cleaned having high resistance, such as a carpet.

Further, turbines are disposed at both ends of the rotary brush, and an intake path for taking in outside air into the rotary brush storage chamber is formed in the suction tool main body, and the external air sucked from the intake path is rotated by the rotary brush. While forming a guide to guide the blade of the rotating brush, by forming a thin portion at the root portion of the rotating brush blade thinner than the other portion, the turbine and the suction air from the intake path to the blade The rotating brush can be driven to rotate at high speed even on a surface to be cleaned, such as a carpet with long hair, due to a synergistic action with a thin portion formed at the root portion of the blade, and dust such as lint can be collected. Collection efficiency is further improved.

Further, by forming a protruding portion extending in the longitudinal direction on the blade surface, the air resistance is increased to increase the rotational force, and dust such as lint on the clean surface such as a carpet is removed. Can improve the beating action and the scraping action.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a central portion according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view of a state in which a lid and an upper case are removed, as viewed from above.

FIG. 3 is an enlarged sectional view showing the rotary brush of the embodiment.

FIG. 4 is a top view of the embodiment.

FIG. 5 is also a side view.

FIG. 6 is a longitudinal sectional view of a central portion in another embodiment of the present invention.

FIG. 7 is a partial cross-sectional view of a state in which a lid and an upper case are removed, as viewed from above.

FIG. 8 is a top view of the embodiment.

FIG. 9 is also a side view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Suction tool main body 4 Lid 7 Suction port 8 Rotary brush storage chamber 11 Rotary brush 15 Blade 15a Thin part 15b, 15c Convex part 20 Guide port 21 First rib 22 Second rib 23 Discharge port 26 Intake path 31 Turbine

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Yoshihiro Mori 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (5)

[Claims] 1. A suction tool main body having a suction port on a lower surface, a rotary brush storage chamber formed in the suction tool main body, and a suction air stored in the rotary brush storage chamber facing the suction port. And a rotating brush that is driven to rotate in a rotating manner, wherein a thinner portion having a smaller thickness than other portions is formed at a root portion of a blade of the rotating brush. 2. A suction tool main body having a suction port on a lower surface, a rotary brush storage chamber formed in the suction tool main body, and a rotation rotatably stored in the rotary brush storage chamber facing the suction port. A suction path for taking in outside air into the rotating brush storage chamber, and a guide for guiding the outside air sucked from the suction path to the blades of the rotating brush. A suction device for a vacuum cleaner, wherein a thin portion having a smaller thickness than other portions is formed at a root portion of a brush blade. 3. A suction tool main body having a suction port on a lower surface, a rotary brush storage chamber formed in the suction tool main body, and housed in the rotary brush storage chamber facing the suction port and disposed at both ends. A rotary brush that is driven to rotate by suctioning outside air to the turbine, wherein a thinner portion is formed at a root portion of a blade of the rotary brush, the thinner portion being thinner than other portions. . 4. A suction tool main body having a suction port on a lower surface, a rotary brush storage chamber formed in the suction tool main body, and housed in the rotary brush storage chamber facing the suction port and disposed at both ends. A rotating brush driven to rotate by suctioning outside air to the turbine, wherein an intake path for taking in outside air into the rotating brush storage chamber is formed in the suction tool main body, and the outside air sucked from the intake path is rotated by the rotating brush. A suction device for a vacuum cleaner, wherein a thin portion having a smaller thickness is formed at a root portion of the blade of the rotating brush while a guide for guiding the blade is formed. 5. The suction tool for a vacuum cleaner according to claim 1, wherein the blade is formed with a convex portion extending in a longitudinal direction on a blade surface thereof.