JP2000060774A - Suction tool for cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suction tool for a cleaner wherein a rotating brush can be rotated and driven by a stable and sufficient rotating power without depending on a motor, a turbine, etc., and without generating unconvenience caused by such constitution that the suction tool is restricted. SOLUTION: An intake opening 20 is formed on the front top face of a suction tool main body 1 and the first guide (a back part guiding rib 21a and a front part guiding rib 21b) for directing open air sucked from this intake vent 20 downward and the second guide (a guide part 3a) for guiding the sucked air flow directed downward by means of this first guide to the first blade 15 and the second blade 16 positioned on the lower side of the rotational center of a rotating brush 11, are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a vacuum cleaner suction tool such as a floor suction tool used by being connected to an electric vacuum cleaner.

[0002]

2. Description of the Related Art Conventionally, as this kind of floor suction tool, there has been known one in which a rotary brush is rotatably supported by a suction tool body and the rotary brush is rotationally driven by an electric motor or a turbine.

However, in the case where the rotary brush is driven to rotate by an electric motor, the electric motor is heavy, the handling property during the cleaning operation is poor, the number of parts increases, the assembling workability becomes poor, and the cost becomes high. There was a flaw.

Further, Japanese Utility Model Publication No. 4-6686 (A47)
As disclosed in L 9/04), etc., in the case where the rotary brush is rotationally driven by the turbine, the turbine is arranged in the turbine chamber formed in the suction passage from the suction port to the cleaner body, Since it is configured to rotate by the air sucked together with dust, there is a problem that dust is clogged in the turbine due to long-term use and the turbine does not rotate properly.

Further, in order to solve the above-mentioned drawbacks, JP-A-9-28630 (A47L 9/0)
4) etc., the turbine is arranged at both ends of the rotating brush, the clean external air is supplied to the turbine to rotate the turbine, and the air is sucked into the electric vacuum cleaner together with the air sucked from the suction port. Proposed.

However, even in the above structure, since the turbines are arranged on both sides of the rotating brush, the number of parts is increased and it is necessary to efficiently rotate the turbine with a small amount of outside air, which causes a problem that the turbine shape becomes complicated. is there.
Further, there is a drawback that the suction port cannot be formed on the lower surface of the turbine housing chamber, the suction port becomes smaller than the lateral width of the suction tool body, and dust is left unsucked.

Therefore, the applicant of the present application filed Japanese Patent Application No. 9-264.
In No. 471 etc., a lightweight and compact structure in which an intake port or a guide for guiding the outside air to the blade or the brush body of the rotating brush is formed, and the sucked outside air is directly applied to the blade or the brush body to rotate the rotating brush. Proposing an inexpensive floor suction tool,
It has already been commercialized.

[0008]

However, in the above structure, since the sucked outside air is directly applied to the rotating brush, it is necessary to provide the intake port and the guide so that the direction thereof is the tangential direction of the rotation locus of the rotating brush. Therefore, the structure of the suction tool is limited, and various problems occur.

That is, when sucking in from above the suction tool body, since a component such as a guide must be formed above the rotating brush, the height of the suction tool is correspondingly increased. In addition, especially on the surface to be cleaned such as a carpet where the suction tool body sinks deeply, the suction resistance passing through the lower side of the rotating brush becomes large, and the cleaner body passes above the rotating brush in the opposite direction to the rotating direction of the rotating brush. The suction flow that is sucked into the suction port toward the side easily occurs, and the rotating brush becomes difficult to rotate.

Further, when sucking from an oblique direction, an intake air flow passing above and below the rotating brush without hitting the rotating brush is generated, and the rotation becomes unstable.

Further, when sucking from the front of the suction device, sucking from the front is likely to suck dust as well, and the intake port is blocked by the dust, so that the outside air cannot be properly introduced and the rotation becomes unstable. there is a possibility.

Therefore, the present invention has been made to solve the above problems, and does not depend on an electric motor, a turbine or the like, and does not cause a problem due to a limitation of the structure of the suction tool, and the rotating brush. It is an object of the present invention to provide a suction device for a vacuum cleaner, which is capable of rotating and driving a vacuum pump with a stable and sufficient rotational force.

[0013]

In order to achieve the above-mentioned object, the present invention has a suction tool body having a suction port on the lower surface, and a rotary brush storage chamber formed in the suction tool body. A rotary brush that is rotatably accommodated in the rotary brush storage chamber so as to face the suction port, forms an intake port on the front upper surface of the suction tool body, and lowers outside air sucked from the intake port. A first guide for directing, and a second guide for guiding the intake air flow directed downward by the first guide to a blade located below the center of rotation of the rotating brush.
And a guide.

Further, as the first guide, a guide rib is provided on the rear side of the intake port so as to extend downward from the center of rotation of the rotary brush.

As the second guide, a curved guide portion is provided at a lower front portion of the suction port.

As the first guide, a rear guide rib is formed on the rear side of the intake port so as to extend downward from the center of rotation of the rotary brush, and a curved shape of the guide section is provided on the front side of the intake port. And a front guide rib formed so as to hang down corresponding to the front end of the.

Further, the blade is provided with a blade formed of a non-breathable material having soft elasticity so as to be curved rearward with respect to the rotating direction of the rotating brush. is there.

Further, the blade is formed so as to be curved to one side by attaching a brush-like body to the tip of a cloth-like body having a fine texture, and to the rear side with respect to the rotating direction of the rotary brush. It is characterized in that it is provided with a blade mounted so as to be curved.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIG.
~ It demonstrates in detail with reference to FIG.

As shown in FIG. 1 and the like, the suction tool body 1 of this embodiment includes an upper case 2, a lower case 3, a lid body 4 which is detachably attached to the upper case 2 and the lower case 3, and the upper and lower parts. A rotating tube 5 which is rotatably supported in the rear center part between the cases 2 and 3 and is composed of upper and lower members 5a and 5b, and is vertically held between upper and lower members 5a and 5b of the rotating tube 5. It is composed of a joint pipe 6.

The upper member 5a of the rotating tube 5 has a sliding member 5c slidable with respect to the upper member 5a, and an engaging claw 5d formed at an end of the sliding member 5c is provided. It is engaged with a collar portion 6 a formed on the outer periphery of the opening end of the joint pipe 6. As a result, when the joint pipe 6 is rotated upward with respect to the suction tool body 1, the sliding member 5c moves the rotation pipe 5c.
The joint pipe 6 is housed in the upper member 5a and can be rotated up to about 90 degrees with respect to the suction tool body 1.

A suction port 7 is formed on the bottom surface of the suction tool body 1 over substantially the entire width in the longitudinal direction, and a substantially cylindrical rotary brush storage chamber 8 is formed in the suction tool body 1. Large-diameter side wheels 9, 9 are rotatably attached to both ends of 1. Further, as shown in FIG. 2, side suction ports 7a communicating with the suction port 7 and opening to the front side of the side wheel 9 are formed on both sides of the front end of the lower case 3 in which the suction port 7 is formed. The suction port 7 like this
Is also extended to the front side of the side wheels 9, so that dust is not left unsucked at the side wheels 9. In addition,
By providing the large-diameter side wheels 9 at both ends of the suction tool body 1, it is possible to reduce the sticking of the suction port 7 to the surface to be cleaned and to easily get over the step on the surface to be cleaned, thereby making the suction tool body The operability of 1 can be lightened.

Further, as shown in FIG. 2, cylindrical axial support portions 9a, 9a for rotatably supporting the side wheels 9, 9 are formed on both sides of the suction tool body 1 in the longitudinal direction. Partition ribs 10 standing upright from the lower case 3 and hanging from the lid 4 are located inside the both shaft support portions 9a to partition the shaft support portion 9a and the rotary brush storage chamber 8 from each other. The outside air is prevented from being sucked into the rotary brush storage chamber 8 via the shaft support 9a.

A rotary brush 11 is rotatably accommodated in the rotary brush storage chamber 8 while facing the suction port 7. As shown in FIG. 1, the rotating brush 11 includes a core body 12, a pair of first blades 15 mounted by inserting a base portion 14 into a spiral groove 13 formed in the core body 12, The base portion 18 is provided in the spiral groove 13 of the core body 12.
And a pair of second blades 16 to be inserted and mounted.

The core body 12 is formed by extruding aluminum, and the four grooves 13 arranged at equal intervals are formed in a spiral shape so that the two grooves 13 are displaced from each other by about 90 °. Therefore, the first blade 15 and the second blade 16 inserted into these grooves 13 also have a similar spiral shape. In addition, each pair of the first blade 15 and the second blade
The blades 16 of the same kind are arranged symmetrically at an angle of 180 °, and thus, the blades 16 are configured to have a good balance during rotation and smoothly rotate.

The first blade 15 is made of a soft elastic non-breathable material, specifically soft polyvinyl chloride (PV).
C) or soft rubber (such as urethane rubber),
The blade portion is formed integrally with the base portion 14 and is formed so as to be curved to one side. The first blade 15 is attached to the core body 12 so as to be curved rearward with respect to the rotation direction of the rotating brush 11 (counterclockwise direction in FIG. 1). The length of the first blade 15 to the curved blade tip is such that the blade tip portion reaches the tip of the carpet to be sucked when cleaning a carpet with long hair, etc. It is formed shorter than the blade 16.

On the other hand, the second blade 16 has a fine cloth-like body 17 which is hard to let air through, a base 18 formed by molding a synthetic resin at one end of the cloth-like body 17, and the cloth-like body. The brush-like body 19 is sewn to the other end (tip portion) of the body 17. By forming a base portion 18 molded on the cloth-like body 17 with a synthetic resin, the end of the cloth-like body 17 is deformed in a wavy manner.
When the brush-like body 19 is sewn to the tip of the cloth 7, the cloth-like body 17 is pulled and curved to one side. This second blade 16 is rotated in the rotating direction of the rotating brush 11 (see FIG.
The core body 1 is curved so as to be curved rearward with respect to the counterclockwise direction.
It is attached to 2.

The second blade 16 is a rotary brush 11.
In the rotation stop state and the low speed rotation state, the rotary brush 11 is curved rearward with respect to the rotation direction (counterclockwise direction in FIG. 1). As shown in FIG. 1, it is set in an upright state by centrifugal force, and the diameter of the rotation locus in the upright state becomes larger than the diameter of the rotation locus of the first blade 15, so that the floor surface of a flooring or the like is also affected. It is formed so as to contact. Further, in the stopped state of the rotating brush 11, even if the suction tool body 1 is placed on the floor surface, the first blade 15 and the second blade 15
The blade 16 is formed so as not to contact the floor surface.

On the other hand, on the front upper surface of the lid body 4, a slit-like intake port 20 is formed over the entire width of the first blade 15 and the second blade 16 of the rotary brush 11 in the longitudinal direction. On the rear side of the intake port 20, the intake port 20
A rear guide rib 21a forming a first guide for directing the outside air sucked from the downward direction is formed. The rear guide rib 21a is formed so as to hang down from the back surface side of the lid body 4 to below the center of rotation of the rotary brush 11. In addition, the intake port 2
On the front side of 0, in cooperation with the rear guide rib 21a, the first
And a front guide rib 21b that directs the outside air sucked from the intake port 20 downward is formed.
The front guide rib 21b is formed so as to hang down from the back surface side of the lid 4 to a lower side than the rear guide rib 21a. The intake port 20 has a second rear guide rib 21a.
The blade 16 is formed at a position where it does not come into contact with the maximum rotation locus of the blade 16.

A curved guide portion 3a is formed in the lower front portion of the suction port 7 of the lower case 3, and the outside air sucked downward from the suction port 20 along the guide ribs 21a and 21b is removed. It collides with the guide portion 3a and is smoothly guided to the rotating brush 11 side. Further, the guide portion 3a is formed such that the curved front end thereof is located on the extension line of the front guide rib 21b of the suction port 20, and all outside air sucked downward from the suction port 20 is concerned. It collides with the guide portion 3a and is smoothly guided to the rotating brush 11 side. A pair of left and right front wheels 22, 2 of small diameter are provided on the lower surface of the guide portion 3a.
2 is rotatably attached.

Further, on both front side portions of the lid body 4, side suction ports 7 are formed by extending suction ports 7 on the front side of the side wheels 9.
An intake port 23 corresponding to a is formed. By forming such an intake port 23, dust in the side intake port 7a is soared and sucked by the intake flow from the intake port 23, so that the dust can be efficiently collected.

The lid 4 having the intake ports 20 and 23 as described above can be removed by operating the knobs 4a provided on both sides thereof to the outside, as shown in FIG. When the lid 4 is removed, the inside appears as shown in FIG. 2, and the rotating brush 11 and the like can be maintained.

On the other hand, in the rear central portion of the lower case 3, an extending portion 30 extending below the connecting portion of the rotating pipe 5 and the joint pipe 6 is provided.
The rear wheel 31 having a small diameter is rotatably attached to the rear end portion of the extension portion 30. in this way,
The rotating tube 5 to which most force is applied to the suction tool body 1 during cleaning
By supporting the lower portion of the connecting portion between the joint pipe 6 and the rear pipe 31 by the rear wheel 31, it is possible to prevent the suction tool body 1 from being lifted up and maintain the balance.

A raised cloth 32 is provided on the lower surface of the extending portion 30 to reduce the resistance with respect to the surface to be cleaned and to improve the sliding.
Is attached.

In addition, a bumper 40 is disposed in the front portion of the suction tool body 1 while being sandwiched between the lower case 3 and the lid body 4. The bumper 40 is formed of a flexible material such as soft rubber, and integrally has a flap 41 that serves as a suction keeper. The flap 41 and a suction keeper 42 disposed at the rear of the suction port 7 are combined with each other. This improves the deep suction force. A plurality of protrusions 41a are formed on the back surface of the flap 41 of the bumper 40, and when the suction tool body 1 is pulled toward the hand side during cleaning, the protrusions 41a cause the lint, etc., of the surface to be cleaned such as a carpet. It is designed to be able to be hooked on and sucked in securely.

By connecting the joint pipe 6 of the suction tool body 1 to a cleaner body (not shown) via a flexible hose and an extension tube and driving the electric blower of the cleaner body, the suction port 7 is discharged. Air is sucked. When the suction tool 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 opened, the flow velocity of the air sucked from the suction port 7 is relatively low,
Therefore, the rotating brush 11 hardly rotates.

When cleaning a floor such as a flooring or a tatami mat, since the gap between the surface to be cleaned and the suction port 7 is relatively wide, the suction resistance from the suction port 7 is relatively small, and the suction port 7 is relatively small.
Most of the air is sucked in from the intake ports 20, 2
From 3 it is almost never inhaled. In this state, the air sucked from between the suction port 7 and the surface to be cleaned has a high flow velocity, so the air sucked from the suction port 7 hits the first blade 15 and the second blade 16 of the rotating brush 11 to rotate. The brush 11 is rotated counterclockwise in FIG.

In this case, since the first blade 15 is curved rearward with respect to the rotating direction of the rotary brush 11 as described above, it is easy to receive the air sucked from the suction port 7, and the floor such as a flooring is easily received. Since it is formed in a length that does not contact the surface, it functions exclusively as a blade for rotating the rotary brush 11, and because the whole is made of a non-breathable material such as PVC, the sucked air is not wasted. It acts to give a large rotating force to the rotating brush 11. On the other hand, since the second blade 16 is also curved rearward with respect to the rotating direction of the rotating brush 11 as described above when the rotating brush 11 is in the rotation stopped state or the low speed rotating state, it is sucked from the suction port 7. The rotary brush 11 rotates efficiently because it is easy to receive air and it is difficult for air to pass through by using the fine cloth-like body 17.

When the rotary brush 11 rotates at a high speed, the second blade 16 is erected by the centrifugal force as shown in FIG. When the second blade 16 is in the upright state, the brush-like body 19 sewn to the tip of the cloth-like body 17 comes into contact with the floor surface or the tatami mat surface, and wiping or polishing can be performed. Since the second blade 16 uses the flexible cloth-like body 17, it does not damage the floor surface or the tatami surface even if it contacts the floor surface or the tatami surface.

Further, dust on the side wheels 9 provided at both ends of the suction tool body 1 can also be sucked in from the side suction ports 7a extending to the front side of the side wheels 9, so that the side wheel 9 portions It is also possible to eliminate the remaining dust. In this case, since dust on the floor surface such as the flooring is easily sucked, the intake port 2 formed corresponding to the side intake port 7a
Even if there is not much inflow of outside air from 3, the dust can be sucked in.

On the other hand, when cleaning a surface to be cleaned such as a carpet, the suction port 7 is covered with the surface to be cleaned, the suction resistance from the suction port 7 increases, and the suction port 20 and 23 are sucked. The outside air volume increases.

The intake port 20 formed in front of the suction tool body 1 corresponding to the rotary brush 11 has an opening area extremely smaller than that of the suction port 7, so that the intake port 2
The outside air sucked from 0 collides with the guide portion 3a of the lower case 3 along the guide ribs 21a and 21b at a high flow rate, and the flowing direction of the outside air is smoothly changed in the curved guide portion 3a, so that the rotating brush 11 moves. First blade 15 and second
It collides with the blade 16 and rotates the rotating brush 11 counterclockwise in FIG.

Here, the intake port 20 and each guide rib 21
Since the a, 21b and the guide portion 3a are configured as described above, since the guide and the like are not formed above the rotary brush 11, the height of the suction tool body 1 does not become high, and the intake air flow is prevented. The first blade 15 and the second blade 16 located below the center of rotation can be stably and reliably applied. Further, since the intake port 20 is formed on the upper surface of the suction tool, there is no possibility of sucking dust and the like to be blocked. Therefore, the rotary brush can be rotationally driven with a stable and sufficient rotational force without using the electric motor, the turbine, or the like, and without causing a problem due to the configuration of the suction tool being limited.

Further, since the guide portion 3a formed in a curved shape in the lower front portion of the suction port 7 allows the intake air flow to flow in parallel to the surface to be cleaned of the carpet or the like that has appeared in the suction port 7, The dust on the surface to be cleaned can be efficiently sucked.

Further, since the rear guide rib 21a is formed so as to hang down to a position below the center of rotation of the rotary brush 11, the outside air sucked from the intake port 20 passes above the rotary brush 11 to directly rotate the rotary pipe. 5 can be reliably guided to the guide portion 3a by being prevented from being sucked by the suction port 50, and the rotary brush 11 can be efficiently rotationally driven.

The first blade 15 is formed of a non-breathable material such as PVC and is curved rearward with respect to the rotating direction of the rotating brush 11, and the second blade 16 is partially air-impermeable. Is formed of the cloth-like body 17, and when the rotating brush 11 is in a rotation stop state or a low speed rotating state, the rotating brush 11
Since it is curved rearward with respect to the rotation direction, it also serves to improve the rotation efficiency as described above.
Moreover, the first blade 15 formed of PVC or soft rubber tends to have a large load resistance when contacting with a carpet or the like.
Since it is curved rearward with respect to the rotating direction of the rotating brush 11, the load at the time of contact with a carpet or the like can be easily released, so that a decrease in the number of rotations can be prevented and
It will not damage the carpet surface.

On the other hand, the suction ports 23 on both sides of the suction tool body 1
Similarly to the intake port 20, the intake port 23 has an opening area extremely smaller than that of the intake port 7.
The outside air sucked from is blown at a high flow velocity to the side suction port 7a extending in front of the side wheel 9, and dust such as lint buried in the surface to be cleaned such as a carpet is lifted up. Since the dust can be sucked, it is possible to eliminate the residual dust suction on the side wheel 9 portion and improve the dust collecting capability.

As a secondary effect, by sucking the outside air from the intake ports 20 and 23 as described above, it is possible to prevent the suction tool body 1 from being excessively sucked on the surface to be cleaned, and the suction tool body 1 Mobility can be improved.

Further, when cleaning a carpet or the like as described above, the surface to be cleaned having long hair becomes a resistance, and the rotating brush 1
Although the number of rotations of 1 may decrease, the above-described configuration makes it possible to reliably apply the sucked outside air to the blades 15 and 16 in a stable and reliable manner, and
It is possible to reduce the contact resistance of and reduce the decrease in rotation speed. Even so, when the rotation speed of the rotating brush 11 decreases, the second blade 16 is curved rearward with respect to the rotation direction so that the second blade 16 gradually restores to the shape at the time of stop as the centrifugal force decreases, and the second blade 16 is cleaned. The contact resistance with the surface decreases and the rotation speed increases. By repeating this operation, the rotating brush 1
The number of rotations of 1 is maintained substantially constant.

That is, the second blade 16 is the cloth-like body 1.
Since the brush-like body 19 is sewn to the sewing machine 7, the second blade 16 can be easily bent, and the brush-like body 19 is used as a weight to facilitate the second blade 16 to stand up. Can be made, rotating brush 1
Since the second blade 16 can be erected and curved even with a slight fluctuation in the rotational speed of 1, the rotational speed of the rotating brush 11 can be maintained substantially constant.

By the way, since the rotary tube 5 is rotatable in the left-right direction of the suction tool main body 1 and the joint tube 6 is arranged in the vertical direction rotatable with respect to the rotary tube 5, By rotating the joint pipe 6 approximately 90 degrees in the upward direction and rotating the rotary pipe 5 approximately 90 degrees, the extension pipe and the flexible hose (not shown) connected to the joint pipe 6 are connected to the suction pipe main body 1. Since the suction tool body 1 is substantially parallel to the longitudinal direction, the suction tool body 1 can be inserted into a narrow space such as a gap between furnitures, and cleaning efficiency can be improved.

In the above embodiment, the rotating brush 11
Although the intake port 20 for sucking the outside air applied to the inside is formed in a continuous slit shape, it may be formed by being divided into a plurality of parts.

Further, in the above-described embodiment, two types of the pair of the first blade 15 and the second blade 16 are provided, that is, four blades in total, but the rotating brush 11 can be efficiently rotationally driven even if only one type is used. . The number of sheets is not limited to four, but if the number of sheets is increased too much, the intervals between them will become narrower.
Since the area that the sucked outside air hits is small, it is conceivable that the efficiency will be adversely affected, and four sheets are optimal in terms of balance.

Further, in the above embodiment, the suction port 7 is extended to the front side of the side wheel 9, but the same effect can be obtained by extending the suction port 7 to the rear side.

By the way, in the above embodiment, the case where the present invention is applied to the floor suction tool has been described. However, as described above, the electric motor and the turbine are not required, the cost can be reduced, and the suction tool of the suction tool can be used. Since it is possible to reduce the size and weight, it is also effective when applied to a sofa, a curtain, or a suction tool used for bedding and the like.

[0056]

As described above, according to the present invention, the intake port is formed on the front upper surface of the suction tool body, and the first guide for directing the outside air sucked from the intake port downward, and the first guide. The second guide for guiding the intake air flow directed downward by the guide to the blade located below the center of rotation of the rotating brush, so that no guide or the like is formed above the rotating brush. The height of the tool does not increase, and the intake air flow can be reliably applied to the blade located below the center of rotation of the rotating brush, and since the intake port is formed on the top surface Since there is no risk of blockage, it is possible to drive the rotating brush with a stable and sufficient rotational force without depending on the electric motor, turbine, etc., and without causing problems due to the limited configuration of the suction tool. Kill.

Further, as the first guide, a guide rib is formed on the rear side of the intake port so as to extend downward from the center of rotation of the rotary brush, so that the outside air sucked from the intake port is rotated. Since it can be prevented from passing above and being directly sucked into the suction port, the rotary brush can be stably rotated.

Further, as the second guide is provided with a guide portion formed in a curved shape in the lower front portion of the suction port, the outside air sucked downward from the suction port is smoothly moved to the rotating brush side. Will be guided to.

As the first guide, a rear guide rib is formed on the rear side of the intake port so as to extend downward from the center of rotation of the rotary brush, and a curved shape of the guide section is provided on the front side of the intake port. By including the front guide rib that is formed so as to hang down in accordance with the front end of the intake air, it is possible to prevent outside air sucked from the intake port from passing above the rotary brush and being directly sucked into the suction port. All the outside air sucked downward from the mouth is smoothly guided to the rotating brush side.

Further, since the blade is made of a non-breathable material having soft elasticity and is formed so as to be curved rearward with respect to the rotating direction of the rotating brush, the intake flow is efficiently increased. Since it can be received well, the rotating force can be improved and the load resistance when the blade comes into contact with the carpet etc. is reduced, so that the decrease in the number of revolutions can be reduced and the carpet surface will not be damaged. .

Further, the blade is formed so as to be curved to one side by attaching a brush-like body to the tip of a cloth-like body having a fine texture, and to the rear side with respect to the rotating direction of the rotary brush. By providing the blades that are installed so as to bend, it is possible to efficiently receive the intake air flow, so it is possible to improve the rotational force and to easily bend when contacting with the carpet or floor surface. The load resistance at the time is reduced, the decrease in the number of rotations can be reduced, and the floor surface and the carpet surface are not damaged. In addition, the brush-like body can efficiently clean the floor surface and remove lint from the carpet, and the brush-like body can be used as a weight to facilitate the standing of the blade by a centrifugal force. Since the blade can be erected and curved even with a slight fluctuation in the rotational speed, the rotational speed of the rotary brush can be maintained substantially constant.

[Brief description of drawings]

FIG. 1 is a vertical cross-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 body and an upper case are removed as seen from above.

FIG. 3 is a top view of the above embodiment.

FIG. 4 is a side view of the same.

[Explanation of symbols] 1 Suction tool body 2 upper case 3 lower case 3a Guide part (second guide) 4 Lid 7 Suction port 7a Side suction port 8 rotating brush storage room 9 side wheels 11 rotating brush 15 First blade 16 Second blade 17 Cloth 19 Brush-like body 20 air intake 21a Rear guide rib (first guide) 21b Front guide rib (first guide) 22 front wheels 23 Inlet 31 rear wheel

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Ritsuzo Kobayashi             2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture             Within Yo Denki Co., Ltd. (72) Inventor Kazuhiro Fujii             2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture             Within Yo Denki Co., Ltd. (72) Inventor Akihiko Zoko             2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture             Within Yo Denki Co., Ltd. F term (reference) 3B061 AA06 AA11 AD05 AE05 AE14

Claims (6)

[Claims] 1. A suction tool body having a suction port on a lower surface, a rotary brush storage chamber formed in the suction tool body, and a rotation rotatably stored in the rotary brush storage chamber facing the suction port. A first guide for forming an intake port on the front upper surface of the suction tool body and directing outside air sucked from the intake port downward; and an intake air directed downward by the first guide. A second guide for guiding the flow to a blade located below the center of rotation of the rotary brush. 2. The vacuum cleaner according to claim 1, wherein the first guide is provided with a guide rib formed on the rear side of the intake port so as to extend downward from a rotation center of the rotary brush. Suction tool. 3. The suction tool for a vacuum cleaner according to claim 1, wherein a guide portion formed in a curved shape is provided at a lower front portion of the suction port as the second guide. 4. As the first guide, a rear guide rib is formed on the rear side of the intake port so as to extend downward from the rotation center of the rotary brush, and a curved shape of the guide section is provided on the front side of the intake port. The suction tool for a vacuum cleaner according to claim 3, further comprising: a front guide rib that is formed so as to hang down according to a front end of the suction tool. 5. A blade formed of a non-breathable material having soft elasticity and formed so as to be curved rearward with respect to the rotation direction of the rotary brush, as the blade. The suction device for a vacuum cleaner according to any one of claims 1 to 4. 6. The blade is formed so as to be curved to one side by attaching a brush-like body to the tip of a cloth-like body having a fine texture, and to the rear side with respect to the rotating direction of the rotating brush. The suction device for a vacuum cleaner according to any one of claims 1 to 5, further comprising a blade that is mounted so as to be curved.