JP3187346B2 - Suction body for vacuum cleaner 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 unit for a vacuum cleaner having a built-in rotary cleaning body which also serves as an impeller and uses a suction force as a rotation drive source, and a vacuum cleaner using the same.

[0002]

2. Description of the Related Art As described in Japanese Patent Application Laid-Open No. 9-28630, an impeller for driving a rotary cleaner is a conventional rotary cleaner. Was configured coaxially on both sides. The impeller is
The structure has been such that it is rotated by an airflow sucked from a nozzle formed by a large number of fixed blades provided so as to cover the impeller.

Further, as described in JP-A-59-101126, a floor nozzle for a vacuum cleaner is provided with a sub-suction chamber provided behind a main suction chamber having a built-in rotary brush to improve dust suction characteristics. Has been proposed.

[0004]

SUMMARY OF THE INVENTION The above-mentioned Japanese Patent Application Laid-Open No. 9-286.
In the technology described in Japanese Patent Publication No. 30, there are a large number of fixed blades for forming nozzles on both outer sides of the impeller. It was difficult to remove garbage in the section, especially cotton garbage on the carpet.

Further, since the fixed wings are formed at both ends of the suction main body, the height of the suction main body cannot be reduced, and the size in the front-rear direction is limited.

Further, since a large number of nozzles are provided inside the suction port, dust and the like contained in the sucked air are liable to be clogged, and there has been a problem in maintenance.

[0007] Most of the rotation torque for rotating the rotary cleaning body is generated by the airflow sucked from the outside of the suction port. However, in the portion where the air flows out from the impeller chamber housing the impeller, Conversely, a force for rotating the rotating cleaning body in the opposite direction is generated, and the rotating torque is reduced.

Further, since the air sucked from the inlet nozzle near the both ends of the suction port moves around the rotary cleaning body toward the center of the suction port, the direction of the sucked air flow is perpendicular to the rotary cleaning body and the impeller. Instead, it becomes oblique. Therefore, the force that the air current pushes the rotating cleaning body and the impeller in the rotation direction is
It was reduced by the slant.

When the mouthpiece is lifted from the cleaning surface,
The rotating cleaning body is rotated by an airflow sucked from an opening opened below the impeller chamber, and there is a problem in noise and safety.

In general, when a mouthpiece is placed on a carpet to clean the carpet, the carpet is sucked to the mouthpiece by a suction force. Sucked inside. If the amount of contact between the sucked carpet and the rotary cleaning body increases, the load torque increases at the suction opening that rotates the rotary cleaning body with the suction force, and the required number of rotations cannot be maintained.

For this reason, the opening width of the lower portion of the rotary cleaning body cannot be increased, and there is a problem with respect to suction of large dust.

Further, in the above-mentioned Japanese Patent Application Laid-Open No. Sho 59-101126, an air turbine for rotating the rotary brush is separately arranged behind the sub suction chamber,
There has been a problem that the size of the floor nozzle body in the front-rear direction is increased and the height of the floor nozzle body is also increased.

An object of the present invention is to solve the above-mentioned problems.
Provided is a small-sized suction unit for a vacuum cleaner, in which dust suction performance is improved by spraying an airflow to be suctioned widely on a rotary cleaning body, and which is quiet, has good safety and is easy to maintain, and a vacuum cleaner using the same. It is in.

[0014]

To achieve the above object, the present invention provides a suction body having an upper case and a lower case.
Formed on the cleaning surface side of the suction body and sucked from outside
An inlet nozzle through which an air flow passes; and
An impeller room having an opening toward the surface to be removed, and the impeller room
A rotary shaft parallel to the cleaning surface,
A rotating cleaning body that rotates using the
In the suction body for a vacuum cleaner having the above, the inlet nozzle
Are located on both sides of the suction main body in the width direction on the cleaning surface side of the suction main body.
Formed near the end and forwardly behind the impeller chamber
Forming ventilation passages that extend to near the both ends in the width direction of the suction body
And the suction port between the impeller chamber and the ventilation passage.
Extending to near both ends in the width direction of the body, and the impeller chamber and the
An outlet nozzle communicating with the ventilation path is formed .

Further, as another feature of the present invention, the rotation
The cleaning body cleans the member rotated by the air flow and the cleaning surface.
That it is also composed of
You.

Further, as another feature of the present invention, the member
Is that it is formed of a flexible elastic body .
Further, as another feature of the present invention, the impeller chamber has a substantially circular shape.
That is, it is formed in a cylindrical shape.

Further, another feature of the present invention is that the upper case and
A suction body having a lower case, and a cleaning surface side of the suction body.
An inlet nozzle formed through which an air flow sucked from outside is passed;
Having an opening communicating with the inlet nozzle toward the cleaning surface side
An impeller room, and disposed in the impeller room with respect to the cleaning surface.
It has a parallel rotation axis, and the passed airflow is directly
Body for a vacuum cleaner having a rotating cleaning body that rotates with rotation
In the above, the inlet nozzle is on a cleaning surface side of the suction body.
Formed near both ends in the width direction of the suction body,
At both ends in the width direction of the suction body behind the impeller chamber
Forming a ventilation path extending to near, and further with the impeller chamber
Between the ventilation passages and near both ends in the width direction of the suction main body
An outlet that extends and communicates the impeller chamber with the ventilation path;
Forming a chisel, the ventilation path is on the cleaning surface side of the suction body
It has an opening .

Another feature of the present invention is that dust on the cleaning surface
A suction body for sucking air, and connecting the suction body to a tip end of the suction body.
An extension tube that carries the dust and a vacuum cleaner that carries the dust
A hose for feeding to the body, and a suction for sucking the dust into the mouthpiece.
And a vacuum cleaner having the above-mentioned vacuum cleaner main body for applying a suction force.
The mouthpiece has an upper case and a lower case.
A mouth body and a suction surface formed on the cleaning surface side of the suction body.
An inlet nozzle for passing an air flow to be drawn, and communicating with the inlet nozzle
An impeller chamber having an opening toward the cleaning surface, and the impeller
A rotating shaft disposed in the vehicle interior and parallel to the cleaning surface;
A rotary cleaner that rotates using the passed airflow as a direct drive source
A cleaning body, wherein the inlet nozzle cleans the suction body.
Formed on the surface side up to near the both ends in the width direction of the suction body,
And both ends in the width direction of the suction main body behind the impeller chamber.
To form a ventilation passage extending to the vicinity of the
And between the ventilation passages and near both ends in the width direction of the suction body.
And an outlet extending between the impeller chamber and the ventilation path
That is, the nozzle was formed .

According to the present invention, the inlet nozzle for passing the airflow sucked from the outside into the impeller chamber sucks the airflow toward the cleaning surface of the suction body.
It is formed up to near both ends in the width direction of the mouth body. And feathers
It extended to the width direction both ends of the suction body behind the root wheel room.
A ventilation passage is formed, and a suction port is provided between the impeller chamber and the ventilation passage.
It extends to near both ends in the width direction of the body, and the impeller room and the ventilation path
To form an outlet nozzle.

Further , the rotary cleaning member is rotated by the air flow.
A member that serves both as a cleaning member and a member that cleans the cleaning surface
The member is formed of a flexible elastic body.
You.

As described above, by forming the inlet nozzle and the outlet nozzle wide in the width direction of the suction main body, the airflow blown into the impeller chamber can rotate the member and the member for cleaning the cleaning surface. , And the rotary cleaning body is rotated, and is sucked into the air passage behind the impeller chamber through the outlet nozzle in the same direction and substantially the same width. Sa
In addition, the ventilation path behind the impeller chamber is
It is formed long in the width direction of the main body, and connects the impeller room and the ventilation path
By forming the outlet nozzle wide in the width direction, the impeller chamber
The direction of the airflow flowing out from the
Airflow at the outlet nozzle at the corner and at the center and both ends of the inlet
Speed difference can be reduced.

[0022] Thus, by the synergistic effect of the swirling flow generated by the rotation of the rotary cleaning body and the swirling flow generated in the rotation direction of the rotary cleaning body in the impeller chamber, dust can be absorbed while the dust on the cleaning surface is wound up. Dust performance can be greatly improved.

When the suction body is lifted from the cleaning surface during use, most of the sucked airflow is sucked from below the ventilation path, and almost no airflow passes through the inlet nozzle or the outlet nozzle. The rotation of the cleaning body becomes small or stops. Thereby, noise reduction and safety can be ensured.

[0024]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a mouthpiece and a vacuum cleaner using the same according to an embodiment of the present invention.

FIG. 20 is a perspective view showing the external appearance of a vacuum cleaner using a mouthpiece according to one embodiment of the present invention. A cleaner main body 100 in which a control circuit, an electric blower and the like are incorporated, a hose 101 connected to a suction port of the cleaner main body 100, a hose hand portion 102 that is gripped by a user and connected to a hose at one end side, An extension tube 103 connected to the other end of the hose hand portion 102, and a mouthpiece 1 connected to the extension tube 103
And a switch operation unit 1 provided on the hose hand unit 102.
04, a first infrared light emitting portion 105 provided on the hose hand portion 102, a second infrared light emitting portion 106 provided on the hose hand portion 102, and an infrared light receiving portion provided on the upper surface of the cleaner main body 100. 107. 10
Reference numeral 8 denotes a ceiling in the room.

Next, the operation of the electric vacuum cleaner of this embodiment will be described. When the user of the vacuum cleaner presses one of the switch operation units 104 provided on the hose hand unit 102, a signal code according to the pressed switch is converted into an infrared signal as a first infrared light emitting unit 105 and a second infrared light unit. The light is emitted from the light emitting unit 106.

The first infrared light emitting section 105 is disposed so as to face substantially vertically upward in a normal use state, and an infrared signal radiated from the first infrared light emitting section 105 is transmitted to a ceiling or a wall of a room. The light is reflected and reaches the infrared receiving unit 107 of the cleaner body 100.

Further, the second infrared light emitting section 106 is disposed at the grip end of the hose hand so as to face downward from substantially horizontal, and the infrared signal emitted from the second infrared light emitting section 106 is It directly reaches the infrared receiving unit 107 of the cleaner main body 100. The infrared signal that has reached the infrared light receiving unit 107 controls the vacuum cleaner through a control circuit built in the cleaner main body 100.

As described above, the vacuum cleaner of this embodiment transmits the operation information input by the user to the cleaner main body 100 using an infrared signal to control the cleaner. In addition, the power line is not used for the hose 101, and the hose is reduced in weight.

As a suction body used in such an electric vacuum cleaner, a type in which a rotary cleaning body is rotated by using an impeller rotating by a suction airflow of an electric blower as a driving source is mainly used.

FIG. 1 shows a longitudinal section of a mouthpiece provided in the vacuum cleaner of FIG. 1 and according to an embodiment of the present invention. 2 is a horizontal cross section at the center of the rotary cleaning body in FIG. 1, FIG. 3 is a side view of the mouthpiece, FIG. 4 is an upper surface of the mouthpiece, FIG. 5 is a front view of the mouthpiece in FIG. Show.

In FIGS. 1 to 6, the skeleton of the mouthpiece 1, that is, the mouthpiece body is divided into upper and lower portions at a substantially central height position, and a lower case 2 forming an outer shell and a lower case 2 of the lower case 2 are formed. The upper case 3 is formed at the upper rear side.

A shock absorbing bumper 4 is mounted on the outer periphery of the position where the lower case 2 and the upper case 3 come into contact with each other to maintain airtightness and prevent damage to furniture and the like.

A cover 6 for covering the rotary cleaning body 5 is detachably provided in front of the upper part of the mouthpiece 1.

A casing 7 is provided at the rear end of the mouthpiece 1 so as to be rotatable up and down. A rotatable mouthpiece 8 is connected to the tip of the casing.

As shown in FIG. 6, the lower case 2 has a pair of front wheels so as to move the entire suction body 1 in the front-rear direction and to maintain a constant distance between the lower surface of the suction body 1 and the cleaning surface. 9 and a pair of rear wheels 10, and a roller 11 for receiving pressure on a cleaning surface during use of the cleaner.

Further, after the lower case 2, a pressure control plate 12 for regulating the airflow flowing through the bottom surface of the mouthpiece 1 and maintaining the suction pressure inside the mouthpiece 1 is provided.

Here, the front wheel 9 and the rear wheel 10 are arranged at positions facing each other.

A pair of opening / closing levers 13 that slide in the lateral direction are provided inside the cover 6, and can be detached from the lower case 2 and the upper case 3 by operating the levers 13.

Inside the mouthpiece 1, a rotary cleaning body 5 for scraping up dust and the like is provided. The rotating cleaning body 5
A band-shaped cleaning body 16 in which a brush 15 having a high wiping effect such as nylon is sewn to the tip of a flexible blade 14 having a high dust-raising effect is disposed in a groove provided in the outer peripheral rotation axis direction of a rotary core 17. The rotary shaft 18 is press-fitted at both ends thereof, and is rotatably supported by a slide bearing 19. The sliding bearing 19 is held by a pair of opposed support ribs 20 provided on the lower case 2.

The cleaning body 16 is bent in a direction opposite to the direction of rotation of the rotary cleaning body 5. When the cleaning body 16 extends in the normal direction of the rotary core 17, the cleaning body 16
Has a diameter that does not abut the wooden floor surface.

Next, a mechanism for rotating the rotary cleaning body 5 will be described. Air for rotating the rotary cleaning body 5 passes through the inlet nozzle 21 of the recess provided in the lower case 2 shown in FIGS. Rotary cleaning body 5 from outside
Is blown into the impeller chamber 22 in which is stored.

The high-speed airflow blown into the impeller chamber 22 sprays the rotating cleaning body 5 at a substantially right angle toward the cleaning body 16 serving as the blade of the impeller, and rotates the outlet nozzle 24 at a high speed. The air is sucked into the ventilation path 23 behind the impeller chamber 22. Further, the air is guided to the cleaner main body 100 through the casing 7 and the suction joint 8 located substantially at the center of the ventilation passage 23.

As shown in FIG. 2, an air passage 23 behind the impeller chamber 22 is formed along the impeller chamber 22 in the width direction of the suction body 1, and an outlet connecting the impeller chamber 22 and the air passage 23. By forming the nozzle 24 wide in the width direction, the impeller chamber 2
The direction of the airflow flowing from 2 to the outside can be made substantially perpendicular to the cleaning body 16 serving as a blade, and the airflow velocity difference between the outlet nozzles 24 at the center and both ends of the suction port can be reduced.

Further, by forming the outlet nozzle 24 in the form of a scroll nozzle having a cross-sectional area changed in accordance with the winding angle, the generation of an airflow for rotating the rotary cleaning body 5 in the opposite direction is reduced.

The speed of the air flow can be increased by the outlet nozzle 24. As a result, the rotary cleaning body 5 can generate the rotational torque not only by the airflow blown into the impeller chamber 22 from the inlet nozzle 21 but also by the airflow flowing out of the impeller chamber 22.

Further, by making the impeller chamber 22 cylindrical, turbulence of the air flow can be reduced, and the rotary cleaning body 5 can be rotated at a higher speed.

According to this embodiment, the swirling flow by the rotating cleaning body 5 rotating by the high-speed airflow flowing from the inlet nozzle 21 to the outlet nozzle 24 and the rotating cleaning body 5 are generated in the impeller chamber 22 in the rotating direction of the rotating cleaning body 5. Due to the synergistic effect with swirling flow,
Since dust can be absorbed while the dust on the cleaning surface is wound up, the dust collection performance can be greatly improved.

The rotary cleaning body 5 can be provided with a belt-like cleaning body 16 serving as a blade of an impeller in all parts except a bearing portion in the longitudinal direction.
, The ratio of the width of the cleaning body 16 to the lateral width of the suction body increases, and the width of the cotton dust remaining at both ends of the suction body can be reduced.

According to this embodiment, since the inlet nozzle 21 and the outlet nozzle 24 are formed near both ends in the width direction of the suction body 1, a large number of fixed nozzles may be provided outside the impeller as in the conventional example. In addition, the height of the suction body 1 can be reduced to the height of the impeller chamber 22, so that it is easy to insert the gap into furniture.

According to this embodiment, since the inlet nozzle 21 is formed by the concave portion provided in the lower case 2, even if the inlet nozzle 21 is clogged with dust during cleaning, the suction main body 1 is separated from the cleaning surface. Good for maintenance because it can remove garbage clogged with.

According to the present embodiment, the number of blades and the positions of the inlet nozzle 21 and the outlet nozzle 24 are determined so that one or more cleaning bodies 16 also serving as blades exist between the inlet nozzle 21 and the outlet nozzle 24. By setting, even when the rotating cleaning body 5 is stopped on the cleaning surface while the rotation of the rotating cleaning body 5 is stopped, a rotating torque is always generated, and the rotating cleaning body 5 rotates.

According to this embodiment, since the inlet nozzle 21 is provided in front of the impeller chamber 22 and the outlet nozzle 24 is provided in the rear, the dust collecting performance from the front of the suction body 1 is good. Good dust collection performance on the front side when moving forward or pressing the suction front against the wall.

According to the present embodiment, the rotary cleaning member 5 is provided with the flexible band-shaped cleaning member 16 which also functions as a blade over all parts except the bearing portion, and the cleaning member 16 is inclined in the rotation direction. As a result, the cleaning body 16 also serving as a blade is easily affected by the airflow from the inlet nozzle 21, and the blade tip abuts on the cleaning surface obliquely, so that the load on rotation is small and the blade can be driven with a small rotation torque. .

Further, since the cleaning body 16 also serving as a blade is a flexible elastic body, it does not injure a finger or the like, and since the rotary cleaning body 5 is not a rigid body, the cleaning body 1 is not rigid.
6 can be prevented from increasing the unbalanced rotation speed caused by the vibration.

According to the present embodiment, since the flexible band-shaped cleaning body 16 also serving as a blade is formed to be inclined in the rotation direction, when the rotation speed increases, the cleaning body 1 is caused by centrifugal force.
6, the diameter of the tip of the cleaning body 16 increases. When the diameter of the tip of the cleaning body 16 increases, the cleaning body 16
The tip of the will come into more contact with the cleaning surface, and as a result,
Conversely, the rotation speed decreases and the diameter of the tip of the cleaning body 16 decreases. Thereby, even if the load torque of the rotary cleaning body 5 increases or decreases due to the influence of the carpet, the rotation speed of the rotary cleaning body 5 can be kept constant.

Further, the mouthpiece 1 of the present embodiment is
The number of rotations of the rotary cleaning body 5 is automatically changed according to the type of the cleaning surface when the user lifts the cleaning tool.

First, when the mouthpiece 1 is lifted from the cleaning surface during use, most of the airflow sucked from the outlet nozzle 24 is sucked from below the mouthpiece 1 as shown in FIG. Since it hardly passes through the nozzle 21, the rotation torque of the rotary cleaning body 5 decreases, and the rotation speed of the rotary cleaning decreases. This prevents the rotating cleaning body 5 from rotating at a high speed due to a reduced load.

Next, when the suction body 1 is placed on the floor or a tatami mat during cleaning, as shown in FIG. 8, the front wheel 9 and the rear wheel 10 disposed on the lower surface of the suction body 1, and Roller 11
As a result, a predetermined gap is formed between the lower surface of the mouthpiece 1 and the floor or the tatami mat, the cross-sectional area of the inlet nozzle 21 increases, and the speed of the airflow flowing through the inlet nozzle 21 decreases. Thereby, the number of rotations of the rotary cleaning body 5 is reduced, and it is possible to prevent the floor surface from being damaged by the rotary cleaning body 5 and vibration due to excessive rotation.

Next, when the mouthpiece 1 is placed on a carpet during cleaning, as shown in FIG. 9, the lower surface of the mouthpiece 1 is in close contact with the carpet, the cross-sectional area of the inlet nozzle 21 is reduced, and the inlet nozzle is reduced. 21
The speed of the airflow flowing through is increased. As a result, the driving force of the rotary cleaning body 5 increases, and the rotary cleaning body 5 rotates at a rotation speed that balances the load of the cleaning body 16.

As described above, in the suction body 1 of this embodiment, the number of revolutions of the rotary cleaning body 5 is automatically changed depending on the type of the cleaning surface. This eliminates the need for a switching lever for manually switching the amount of air blown to the air turbine in accordance with the required cleaning surface, thereby improving operability.

On the lower surface of the mouthpiece 1 of this embodiment, a front wheel 9 and a rear wheel 10 are respectively left and right, and a five-point wheel in which a roller 11 is disposed at the rear center. this is,
By stabilizing the distance between the lower surface of the mouthpiece 1 and the cleaning surface and allowing air to flow uniformly to the cleaning body 16 also serving as a blade, the rotation speed of the rotary cleaning body 5 is stabilized, and the dust collection efficiency is improved. Is prevented from dropping.

Next, a method for maintaining the mouthpiece 1 of this embodiment will be described.

As described above, the mouthpiece 1 of this embodiment is provided with the cover 6 at the upper front of the mouthpiece 1 so as to cover the rotary cleaning member 5. The cover 6 has a cover 6
There is an open / close lever 13 that slides laterally inside the
By operating this, the lower case 2 and the upper case 3
Can be removed from.

A recess 25 is formed on the side surface of the mouthpiece 1. When removing the cover 6, first insert the index finger or the middle finger into the concave portion 25, hook the thumb on the opening / closing lever 13, slide the opening / closing lever 13 outward to release the engagement, and remove the thumb and the index finger ( Or middle finger) and remove.

According to the present embodiment, since the opening / closing lever 13 that slides in the horizontal direction is provided inside the cover 6, the opening / closing lever 13 is protected from external force even when it comes into contact with furniture or the like during cleaning. be able to.

The cylindrical inner case 26 forming the impeller chamber 22 is divided into upper and lower parts at the height of substantially the center of the rotary cleaning body 5, and the upper part thereof is screwed to the cover 6. Since the lower portion 26 is screwed to the lower case 2, when the cover 6 is removed, the rotary cleaning body 5 can be removed for cleaning, so that maintenance is extremely excellent.

FIG. 10 shows a case where the mouthpiece according to another embodiment of the present invention is placed on a floor or a tatami mat, FIG. 11 shows a case where it is placed on a carpet, and FIG. 12 shows a case where it is lifted from a cleaning surface. . Further, since the main configuration is the same as that of the above-described embodiment, only different portions will be described below.
As shown in FIG. 10, the air for rotating the nozzle passes through an inlet nozzle 21 formed by a concave portion provided in the lower case 2 and a cleaning surface, and an impeller chamber 22 containing the rotary cleaning body 5 from the outside of the suction body 1. Is blown into

Next, the high-speed airflow blown into the impeller chamber 22 rotates the rotary cleaning body 5 at a substantially right angle toward the cleaning body 16 which plays the role of the blades of the impeller. The ventilation passage 2 passing through the nozzle 24 and behind the impeller chamber 22
It is sucked into 3. Further, the cleaner body 10 passes through the casing 7 and the suction joint 8 located substantially at the center of the ventilation passage 23.
It is led to 0.

As shown in FIG. 10, an air passage 23 behind the impeller chamber 22 is formed along the impeller chamber 22 so as to be long in the left-right direction of the suction body 1, and an outlet connecting the impeller chamber 22 and the air passage 23. By forming the nozzle 24 wide in the left-right direction, the direction of the airflow flowing out of the impeller chamber 22 can be made substantially perpendicular to the cleaning body 16 serving as a blade, and the outlet nozzles 24 at the center and both ends of the suction port are provided. The difference of the airflow velocity in can be reduced.

Further, by forming the outlet nozzle 24 in the form of a scroll nozzle whose sectional area is changed in accordance with the winding angle, the generation of an airflow for rotating the rotary cleaning body 5 in the opposite direction is reduced. Further, the speed of the airflow can be increased by the outlet nozzle 24. As a result, the rotary cleaning body 5 can generate a rotational torque not only by the airflow blown into the impeller chamber 22 from the inlet nozzle 21 but also by the airflow flowing out of the impeller chamber 22.

Further, by making the impeller chamber 22 cylindrical, turbulence of the air flow can be reduced, and the rotary cleaning body 5 can be rotated at a higher speed.

According to this embodiment, each of the impeller chamber 22 and the ventilation path 23 has a long opening in the left-right direction of the suction body 1 at the bottom of the suction body 1, and the space between the impeller chamber 22 and the ventilation path 23 is provided. The outlet nozzle 24 which is a flow path of the air is formed by the mouthpiece 1 and the cleaning surface. Accordingly, even if the width of the bottom opening of the ventilation path 23 in the front-rear direction is set to be narrow as a measure against the load increase due to the suction of the carpet or the like, large dust can be sucked from the bottom opening of the ventilation path 23.

According to the present embodiment, the effect of the cleaning by the rotating cleaning body 5 rotated by the high-speed airflow flowing from the inlet nozzle 21 to the outlet nozzle 24 and the rotation of the rotating cleaning body 5 in the impeller chamber 22 are generated. Due to the synergistic effect with the swirling flow, dust can be absorbed while the dust on the cleaning surface is wound up, so that the dust collecting performance can be greatly improved.

Further, since the rotary cleaning member 5 can be provided with a band-shaped cleaning member 16 serving as an impeller blade in all portions except the bearing portion in the longitudinal direction, the cleaning member with respect to the width of the suction body 1 can be provided. The width ratio of No. 16 increased, and the remaining width of cotton dust at both ends of the mouthpiece main body could be reduced.

According to the present embodiment, since the inlet nozzle 21 and the outlet nozzle 24 are formed in the width direction of the suction body 1, the height of the suction body 1 can be reduced without providing a large number of fixed nozzles outside the impeller. Can be reduced to the height of the impeller chamber 22.

According to this embodiment, since the inlet nozzle 21 is formed by the concave portion provided in the lower case 2 and the cleaning surface,
Even if the inlet nozzle 21 is clogged with dust during cleaning, the clogged dust can be removed by separating the suction body 1 from the cleaning surface, so that maintenance is good.

According to the present embodiment, the number of blades and the positions of the inlet nozzle 21 and the outlet nozzle 24 are determined so that one or more cleaning bodies 16 also serving as blades exist between the inlet nozzle 21 and the outlet nozzle 24. With this setting, even when the rotary cleaning member 5 is placed on the cleaning surface in a state where the rotation of the rotary cleaning member 5 is stopped, a rotational torque is always generated, and the rotary cleaning member 5 rotates.

According to this embodiment, since the inlet nozzle 21 is provided in front of the impeller chamber 22 and the outlet nozzle 24 is provided in the rear, the dust collecting performance from the front of the suction body 1 is good. Good dust collection performance on the front side when moving forward or pressing the suction front against the wall.

According to the present embodiment, the rotary cleaning member 5 is provided with the flexible band-shaped cleaning member 16 which also functions as a blade over all portions except the bearing portion, and the cleaning member 16 is inclined in the rotation direction. The cleaning body 16 also serving as a blade is easily received by the airflow from the inlet nozzle 21,
Since the blade tip abuts the cleaning surface obliquely, the load on rotation is small, and the blade can be driven with a small rotation torque.

Further, since the cleaning body 16 also serving as a blade is a flexible elastic body, it does not injure a finger or the like, and the rotating cleaning body 5 is not a rigid body.
6 can be prevented from increasing the unbalanced rotation speed caused by the vibration.

According to the present embodiment, since the flexible band-shaped cleaning body 16 also serving as a blade is formed to be inclined in the rotation direction, when the rotation speed increases, the cleaning body 1 is caused by centrifugal force.
6 changes, and the diameter of the tip of the cleaning body 16 increases.

As the diameter of the tip of the cleaning body 16 increases, the tip of the cleaning body 16 comes into more contact with the cleaning surface. As a result, the number of rotations decreases and the diameter of the tip of the cleaning body 16 decreases. Thereby, even if the load torque of the rotary cleaning body 5 increases or decreases due to the influence of the carpet, the rotation speed of the rotary cleaning body 5 can be kept constant.

Further, the mouthpiece 1 of this embodiment is
The number of rotations of the rotary cleaning body 5 is automatically changed according to the type of the cleaning surface when the user lifts the cleaning tool.

First, when the mouthpiece 1 is lifted from the cleaning surface during use, as shown in FIG. 12, most of the sucked airflow is sucked from below the ventilation passage 23, and the inlet nozzle 21 and the outlet Since there is almost no airflow passing through the nozzle 24, the driving force of the rotary cleaning body 5 disappears. Thereby, noise reduction and safety can be ensured.

Next, when the suction body 1 is placed on the floor or a tatami mat during cleaning, as shown in FIG. 10, the front wheel 9 and the rear wheel 10 disposed on the lower surface of the suction body 1, and Roller 1
1, a predetermined gap is formed between the lower surface of the suction main body 1 and the floor or the tatami mat, and the bottom opening of the ventilation passage 23 is covered with the cleaning surface, so that the air flows from the inlet nozzle 21 to the ventilation passage 23 through the outlet nozzle 24. Airflow occurs. This air current causes the dust on the floor to be soared and collected.
In addition, the rotary cleaning member 5 rotates at a low speed, thereby preventing the floor surface from being damaged or vibrated by the rotary cleaning member 5.

Next, when the mouthpiece 1 is placed on a carpet during cleaning, as shown in FIG. 11, the mouthpiece 1 sinks on the carpet surface, so that the cross-sectional areas of the inlet nozzle 21 and the outlet nozzle 24 are reduced. The velocity of the airflow through the nozzle decreases and increases. As a result, the driving force of the rotary cleaning body 5 increases, and the rotary cleaning body 5 rotates at a rotation speed that balances the load of the cleaning body 16.

As described above, in the suction body 1 of this embodiment, the number of revolutions of the rotary cleaning body 5 is automatically changed depending on the type of the cleaning surface, which is necessary for the conventional air turbine type suction port. This eliminates the need for a switching lever for manually switching the amount of air blown to the air turbine in accordance with the cleaning surface, thus improving operability.

The front wheel 9 is provided on the lower surface of the mouthpiece of this embodiment.
And a rear wheel 10 are left and right, and a five-point wheel on which a roller 11 is disposed at the rear center. This stabilizes the interval between the lower surface of the mouthpiece 1 and the cleaning surface, and stabilizes the rotation speed of the rotary cleaning body 5 by configuring the cleaning body 16 also serving as a blade so that air flows uniformly. This prevents the dust collection efficiency from decreasing.

FIG. 13 shows a longitudinal section of a mouthpiece according to still another embodiment of the present invention. The impeller chambers 22 for accommodating the rotary cleaning body 5 are provided before and after the ventilation passage 23, respectively. Air is blown into the two impeller chambers 22 from the front and rear two inlet nozzles 21 to rotate each rotary cleaning body 5, exit from each of the two outlet nozzles 24, and pass through the central ventilation passage 23, Vacuum cleaner body 1 through suction joint 8
It is led to 00.

The two rotary cleaning bodies 5 can be different from each other in accordance with the cleaning surface.
One can be dedicated to carpets and the other can be dedicated to floor cleaning. In addition, by rotating the two rotary cleaning members 5 in opposite directions, when the suction body 1 is moved in the front-rear direction, one of the two rotary cleaning members 5 is placed on a cleaning surface having a strong dust removing force. In contrast, the dust can be effectively collected both in the round trip and in the reverse.

FIG. 14 shows a cross section of a mouthpiece according to still another embodiment of the present invention. A ventilation path 23 is provided in front of the impeller chamber 22.
Is provided. The inlet nozzle 21 is provided behind the impeller chamber 22, and the air introduced from the inlet nozzle 21 is blown into the impeller chamber 22 to rotate each rotary cleaning body 5 in the direction of the arrow, and the air flows from the outlet nozzle 24. Road 2
3, the liquid is guided to the cleaner body 100 through the casing 7 and the suction joint 8. With such a configuration, the rotation of the rotary cleaning member 5 is directed in a direction opposite to the cleaning surface when the suction body 1 is advanced, so that dust can be removed well.

FIG. 15 shows a cross section of a mouthpiece according to still another embodiment of the present invention. Only parts different from the above-described embodiment will be described below.

First, air for rotating the rotary cleaning body 5 is sucked through a plurality of or wide openings provided in front of the suction body 1, passes through the inlet nozzle 21, and passes through the rotary cleaning body 5.
Is blown into the impeller chamber 22 in which is stored.

Next, the high-speed airflow blown into the impeller chamber 22 rotates the rotary cleaning body 5 at a substantially right angle toward the cleaning body 16 which plays the role of the blades of the impeller. The ventilation passage 2 passing through the nozzle 24 and behind the impeller chamber 22
It is sucked into 3. Further, the cleaner body 10 passes through the casing 7 and the suction joint 8 located substantially at the center of the ventilation passage 23.
It is led to 0.

As shown in FIG. 15, an air passage 23 behind the impeller chamber 22 is formed to be long in the width direction of the suction main body 1 along the impeller chamber 22, and an outlet connecting the impeller chamber 22 and the air passage 23 is formed. By forming the nozzle 24 wide in the width direction, the direction of the airflow flowing out of the impeller chamber 22 can be made substantially perpendicular to the cleaning body 16 serving as the blade, and the outlet nozzles 24 at the center and both ends of the suction port can be formed. The difference of the airflow velocity in can be reduced.

Further, by forming the outlet nozzle 24 in the form of a scroll nozzle having a cross-sectional area changed in accordance with the winding angle, the generation of an airflow for rotating the rotary cleaning body 5 in the opposite direction is reduced. Further, the speed of the airflow can be increased by the outlet nozzle 24. As a result, the rotary cleaning body 5 can generate a rotational torque not only by the airflow blown into the impeller chamber 22 from the inlet nozzle 21 but also by the airflow flowing out of the impeller chamber 22.

According to this embodiment, since the inlet nozzle 21 is provided in front of the impeller chamber 22 and the outlet nozzle 24 is provided in the rear, the dust suction performance from the front of the suction main body 1 is good. Good dust collection performance on the front side when it is being pressed or when the front face of the suction is pressed against the wall.

Further, the mouthpiece 1 of this embodiment is
The number of rotations of the rotary cleaning body 5 is automatically changed depending on the type of the cleaning surface when the user lifts the cleaning tool.

When the suction main body 1 is lifted from the cleaning surface during use, as shown in FIG. 15, the air drawn by the outlet nozzle 24 enters from both the inlet nozzle 21 and the impeller chamber 22 below. The driving force is greatly reduced by the airflow passing on both sides of the rotary cleaning member 5, and noise reduction and safety can be ensured.

Next, when the suction main body 1 is placed on the floor or a tatami mat (not shown) during cleaning, the front wheel 9 and the rear wheel 10 and the roller 11 are disposed on the lower surface of the suction main body 1.
As a result, a predetermined gap is formed between the lower surface of the suction main body 1 and the floor or the tatami mat, and the bottom opening of the ventilation passage 23 is covered with the cleaning surface, so that the amount of air flowing from the inlet nozzle 21 having the opening at the front of the suction opening is reduced. It is larger than the amount of air flowing from below the impeller chamber 22.

As a result, dust on the front side of the suction opening is sowed and collected. Further, the rotary cleaning body 5 also rotates at a low speed.

Next, when the suction main body 1 is placed on a carpet during cleaning (not shown), the lower part of the suction main body 1 contacts the cleaning surface and almost no air flows from below the impeller chamber 22. Instead, the amount of air flowing from the inlet nozzle 21 having an opening on the front side of the suction port becomes larger. As a result, dust on the front side of the suction opening is soared and collected. Further, the rotary cleaning body 5 also rotates at a high speed and scrapes up dust on the carpet.

As described above, the mouthpiece 1 of this embodiment is
The rotation speed of the rotary cleaning body 5 automatically changes according to the type of the cleaning surface, and the operability is improved.

FIG. 16 shows a cross section of a mouthpiece according to still another embodiment of the present invention. In an embodiment in which blades or brushes that come into contact with the cleaning surface are provided between the blades of the impeller, four fixed wings 27, a pair of blades 14 ', and a blade 14 provided with a pair of brushes 15 at the tips. A rotary cleaning body 5 is formed.

The tip diameters of the fixed wing 27, the blade 14 'and the brush 15 are different from each other.
4 ', by increasing the diameter of the brush 15 in order,
Before the cleaning surface or a finger hits the fixed wing 27, the blade 14
The brush 15 hits the cleaning surface and the finger is not damaged.

FIG. 17 shows a cross section of a mouthpiece according to still another embodiment of the present invention. In this embodiment, a plurality of belt-shaped cleaning bodies 16 also serving as blades of an impeller are integrally formed, so that the number of parts can be reduced, assemblability can be improved, and cost can be reduced. Water does not enter the base of No. 16, is clean and easy to wash, and does not accumulate water.

FIG. 18 shows a cross section of a mouthpiece according to still another embodiment of the present invention. In this embodiment, six strip-shaped cleaning members 16 also serving as blades of the impeller are integrally formed. Even if the number of cleaning members 16 is increased to improve the driving torque, the number of parts does not change and the assembling property is good.

Further, the tip portion 28 of the cleaning body 16 is made of a different material from the other portions and has a different hue. Accordingly, the distal end portion 28 can be made of a softer material, a material that is less likely to be worn away, and a material that has a good dust removal property near the base of the cleaning body 16.

Further, by changing only the color of the tip portion 28 sliding on the cleaning surface to a color in which dirt is not conspicuous, or by changing only the color of the tip portion 28, the worn amount of the blade 14 can be easily understood and the replacement time can be determined by the user. You can let them know.

Further, by forming the projections 29 in the width direction of the blade 14 for scraping up dust, the dust collecting performance can be improved.

FIG. 19 shows a cross section of a mouthpiece according to still another embodiment of the present invention. In this embodiment, six strip-shaped cleaning members 16 also serving as blades of an impeller are formed integrally without bending, and the tip diameter of the cleaning member does not change even if the rotation speed changes, so that the driving torque is improved. Therefore, even if the number of the cleaning bodies 16 is increased, the number of parts does not change and the assemblability is good.

[0113]

According to the present invention, the mouthpiece has a built-in rotary cleaning body which is rotated by an airflow sucked from the outside, and has an inlet nozzle through which the airflow passes, an outlet nozzle through which the airflow passes, and a passage nozzle.
By forming the air passage wide near both ends in the width direction of the suction body, the dust suction performance of the suction body can be improved, the size can be reduced, and further, quietness, safety, and maintainability can be improved. .

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a mouthpiece according to one embodiment of the present invention.

FIG. 2 is a horizontal sectional view of the mouthpiece at the center of the rotary cleaning body in FIG. 1;

FIG. 3 is a side view of the mouthpiece of FIG. 1;

FIG. 4 is a top view of the mouthpiece of FIG. 1;

FIG. 5 is a front view of the mouthpiece shown in FIG. 4;

FIG. 6 is a bottom view of the mouthpiece of FIG. 1;

FIG. 7 is a longitudinal sectional view of the mouthpiece of FIG. 1 when lifted.

FIG. 8 is a longitudinal sectional view of the mouthpiece of FIG. 1 when placed on a floor.

FIG. 9 is a longitudinal sectional view of the mouthpiece of FIG. 1 when placed on a carpet.

FIG. 10 is a longitudinal sectional view of a mouthpiece according to another embodiment of the present invention when placed on a floor.

FIG. 11 is a longitudinal sectional view of a mouthpiece according to another embodiment of the present invention when placed on a carpet.

FIG. 12 is a longitudinal sectional view of a mouthpiece according to another embodiment of the present invention when lifted.

FIG. 13 is a longitudinal sectional view of a suction body provided with two impeller chambers according to still another embodiment of the present invention.

FIG. 14 is a longitudinal sectional view of a suction body provided with a ventilation passage in front of an impeller chamber according to still another embodiment of the present invention.

FIG. 15 is a longitudinal sectional view of a mouthpiece provided with an opening and an inlet nozzle in front of an impeller chamber according to still another embodiment of the present invention.

FIG. 16 is a longitudinal sectional view of a suction body in which the configuration of a blade of a rotary cleaning body is changed according to still another embodiment of the present invention.

FIG. 17 is a vertical cross-sectional view of a suction body in which the configuration of a cleaning body of a rotary cleaning body is changed according to still another embodiment of the present invention.

FIG. 18 is a longitudinal sectional view of a suction body integrally formed with a cleaning body of a rotary cleaning body according to still another embodiment of the present invention.

FIG. 19 is a longitudinal sectional view of a mouthpiece in which a cleaning body of a rotary cleaning body is integrally formed without bending according to still another embodiment of the present invention.

FIG. 20 is a perspective view of the external appearance of a vacuum cleaner having a mouthpiece according to one embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Suction body, 2 ... Lower case, 3 ... Upper case, 5 ... Rotary cleaning body, 6 ... Cover, 7 ... Casing, 8 ... Suction joint, 9
... front wheel, 10 ... rear wheel, 11 ... roller, 13 ... opening / closing lever, 14, 14 '... blade, 15 ... brush, 16,
16 ': cleaning body, 21: inlet nozzle, 22: impeller room,
23 ... ventilation passage, 24 ... outlet nozzle, 100 ... cleaner body, 101 ... hose, 102 ... hose hand part, 103 ...
Extension tube, 104: switch operation unit, 105: first infrared light emitting unit, 106: second infrared light emitting unit, 107: infrared light receiving unit, 108: indoor ceiling

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-10-234629 (JP, A) JP-A-57-69665 (JP, U) Registered utility model 3019056 (JP, U) (58) Fields surveyed ( Int.Cl. ⁷ , DB name) A47L 9/04

Claims (6)

(57) [Claims] And 1. A suction port body having an upper case and lower case, and an inlet nozzle through an air flow sucked from outside is formed on the cleaning surface side of the suction port main body, toward the cleaning surface side communicates with the inlet nozzle A vacuum cleaner having an impeller chamber having an opening, and a rotary cleaning body disposed in the impeller chamber, having a rotation axis parallel to the cleaning surface, and rotating using the passed airflow as a direct drive source. In the suction body for use, the inlet nozzle is formed on the cleaning surface side of the suction main body to near both ends in the width direction of the suction main body, and near the both ends in the width direction of the suction main body behind the impeller chamber. Forming an extended ventilation path, and further forming an outlet nozzle extending between the impeller chamber and the ventilation path to near the both ends in the width direction of the suction body and communicating the impeller chamber with the ventilation path. Characterized by a vacuum cleaner for suction Mouth. 2. The suction body for a vacuum cleaner according to claim 1, wherein the rotary cleaning body is constituted by a member that serves both as a member that rotates by the air current and a member that cleans a cleaning surface. . 3. The mouthpiece for a vacuum cleaner according to claim 2, wherein said member is formed of a flexible elastic body. 4. The method of claim 1, wherein the impeller chamber, for an electric vacuum cleaner suction body, characterized in that it is formed in a substantially cylindrical shape. 5. A suction body having an upper case and a lower case, an inlet nozzle formed on the cleaning surface side of the suction body and passing an airflow sucked from the outside, and communicating with the inlet nozzle toward the cleaning surface side. A vacuum cleaner having an impeller chamber having an opening, and a rotary cleaning body disposed in the impeller chamber, having a rotation axis parallel to the cleaning surface, and rotating using the passed airflow as a direct drive source. In the suction body for use, the inlet nozzle is formed on the cleaning surface side of the suction main body to near both ends in the width direction of the suction main body, and near the both ends in the width direction of the suction main body behind the impeller chamber. Forming an extended ventilation path, further forming an outlet nozzle extending between the impeller chamber and the ventilation path near both ends in the width direction of the suction body and communicating the impeller chamber and the ventilation path; The ventilation path cleans the suction body A mouthpiece for a vacuum cleaner having an opening on a surface side. 6. A suction body for sucking dust on a cleaning surface, an extension pipe connected to the tip of the suction body for carrying the sucked dust,
In a vacuum cleaner having a hose that sends the carried dust to a cleaner body and the cleaner body that applies a suction force to suck the dust into the suction body, the suction body has an upper case and a lower case. A main body, an inlet nozzle formed on the cleaning surface side of the suction main body, and through which an airflow sucked from outside is passed; an impeller chamber communicating with the inlet nozzle and having an opening toward the cleaning surface side; A rotating cleaning body that is disposed and has a rotation axis parallel to the cleaning surface, and that rotates by using the passed airflow as a direct drive source. An air passage is formed near both ends in the width direction of the suction main body, and extends near the both ends in the width direction of the suction main body behind the impeller chamber, and furthermore, between the impeller chamber and the air passage. The width direction both sides of the suction body Vacuum cleaner, characterized in that it has an outlet nozzle communicating and with said impeller chamber and said air passage extends to near parts.