JPH10211133A - Sucking tool for vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sucking tool for a vacuum cleaner which is highly durable and protects what is in contact with an agitator by forcedly stopping the revolution of the agitator or reducing the number of revolution when a sucking tool is positioned in the air. SOLUTION: Concerning this sucking tool for a vacuum cleaner, the flow-in angle of sucked air for driving an air turbine 6 is set to allow the air to flow in at a nearly parallel angle with respect to the blades of the air turbine 6 near a flow-in port 22 when the sucking tool is positioned in the air and the flowing angle is set to allow the flow-in air at a nearly vertical angle with respect to the blades of the air turbine 6 in a state where a part of the port 22 is formed to be covered by a floor surface when the sucking tool is positioned on the floor. Thereby, the agitator 14 revolves on the floor and automatically stops revolution at the time of lifting the sucking tool in the air.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art In recent years, agitators have been forcibly rotated,
Vacuum cleaner suction tools for effectively cleaning carpets and the like have become mainstream.

Conventionally, this type of suction tool is disclosed in Japanese Patent Publication No. 1-602.
The one disclosed in Japanese Patent Publication No. 52 is generally known.

Referring to FIGS. 9 and 10, the suction tool main body 30 is composed of an upper frame 1 and a lower frame 2, and has an agitator 13 provided at the front thereof.
Brush chamber 1 for collecting dust by rotation of agitator 13
The brush chamber 17 has a brush chamber opening 26 on the lower surface side of the brush chamber 17 which is in contact with the floor. An arm 5 is rotatably held up and down by an upper frame 1 and a lower frame 2 at the rear. Reference numeral 4 denotes a pipe 4 which is attached in one direction of the arm 5 so as to be rotatable in a circumferential direction.

In the arm 5, an air turbine 6 that rotates by utilizing the suction air from the cleaner body is fixed to an air turbine shaft 7, and the air turbine shaft 7 is formed through a hole provided in a side wall of the arm 5. It penetrates and passes through the air turbine bearing 8 narrowly provided by the upper frame 1 and the lower frame 2. A pulley small 10 is formed at the end of the air turbine shaft 7, and the air turbine 6 is rotated by a suction wind from the cleaner body to a pulley large 12 formed at the end of the agitator 13 via a belt 11. Power generated by the transmission.

An opening a28 is provided on the side surface of the arm 5, and coincides with an opening b29 which is provided in the upper frame 1 at the lowermost part of the vertical movement of the arm 5 and communicates with the outside air.
The opening b29 communicates with the suction device main body 3
When 0 is in the air, the arm 5 is forcibly positioned at the lowest position of the rotation by the weight of the suction tool and the spring 27 provided on the rotation shaft of the arm 5, and the opening a28 and the opening b29.
Are formed, and a flow path is formed in which outside air does not pass through the air turbine 6, whereby the rotation of the air turbine 6 is reduced.

[0007]

As described above, in the conventional suction device for a vacuum cleaner, it is not possible to completely eliminate the inflow of air flowing through the air turbine, so that the rotation of the agitator does not stop completely. When it is located, no rotational load is applied to the agitator 13. Therefore, the air turbine 6 rotates at a high speed, and at that time, the rotating shaft of the air turbine 6 generates heat due to friction, and a rotation failure due to burning occurs.

Therefore, even when the suction tool is in the air, a load is applied to the rotating shaft, so that the durability of the rotating shaft is poor. Further, there is a drawback that a contact object such as a curtain, which causes a low load on the agitator, is involved.

An object of the present invention is to provide a highly durable suction device for a vacuum cleaner by stopping or reducing the rotation speed of an agitator when the suction device is positioned in the air. It is an object.

[0010]

According to the present invention, there is provided an agitator driven by an air turbine, a suction chamber for rotatably storing the agitator,
An inlet communicating with the air turbine and communicating with outside air, wherein when the main body is located in the air, the wind flowing from the inlet flows at an angle substantially parallel to the blades of the air turbine. As a result, the inflow air hardly hits the blades of the air turbine, and the rotation of the air turbine is reduced. At the same time, the rotation of the agitator is also reduced, so that the durability of the rotation shaft of the air turbine and the agitator can be improved. On the other hand, when the main body is placed on the floor, a part of the inflow port is closed on the floor and the air flowing from the other part is set so as to flow substantially perpendicularly to the blade, so that air is The turbine rotates at a high speed, and the agitator also rotates at a high speed, so that the carpet can be reliably cleaned.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION
An air turbine having a plurality of blades and rotating by suction air, an air turbine chamber accommodating the air turbine, an agitator for scraping dust that is rotated via rotation transmission means by the air turbine, and the agitator. A suction chamber rotatably housed therein, and an inflow port communicating with the air turbine and communicating with outside air.When the inflow port is located in the air, wind flowing from the inflow port flows into the blades of the air turbine. By setting it to flow at a substantially parallel angle to the air turbine, the inflow wind hardly hits the blades of the air turbine, and the rotation of the air turbine is reduced.At the same time, the rotation of the agitator is also reduced. Of the inflow port when the main body is placed on the floor surface. It is set so that the wind that is closed on the floor surface and flows in from other parts flows into the blade at a substantially right angle, and a part of the inlet is closed on the floor surface and Since the incoming wind is set to flow at substantially right angles to the blades, the air turbine rotates at a high speed and the agitator also rotates at a high speed, so that the carpet and the like can be reliably cleaned.

According to a second aspect of the present invention, the inlet is divided into at least an air turbine driving inlet and an air turbine stopping inlet. In order to reliably close the inlet, air flows only from the air turbine driving inflow port, which is efficient for the rotation of the air turbine, so that the air turbine can be rotated efficiently and reliably. In addition, piles of carpets with long hairs are less likely to be entangled by the air turbine.

According to a third aspect of the present invention, the fin for restricting the inflow angle of the inflow air is formed at the air turbine stop inflow port, so that the air turbine can be reliably stopped by the inflow air. By being able to set, the air turbine stop air flow inlet can be set smaller, the strength of the portion of the main body where the air turbine stop air inlet is provided is small, and the air turbine can be surely rotated. Further, the fins can prevent foreign matter from entering from outside and prevent rotation failure of the air turbine.

According to a fourth aspect of the present invention, the main body is placed in the air by arranging a suction hole, which is not directly connected to the suction chamber but directly connected to the air turbine chamber, on the floor grounding side of the suction tool near the inflow port. When the air cleaner is located at the position (1), the suction air from the vacuum cleaner flows into the air turbine stopping inlet, the air turbine driving inlet, and the suction hole, thereby decreasing the inflow wind speed and reducing the air suction noise.

According to a fifth aspect of the present invention, there is provided a rotation stopper which is movable up and down within the main body, and a frame which houses the rotation stopper and is provided near the rotation transmitting means, and the main body is turned over. When the rotation stop body is sandwiched between the frame and the rotating portion of the rotation transmitting means, the power transmission to the agitator by the rotation transmitting means is forcibly stopped, and the main body is turned over during the cleaning operation. When left in the state of
The rotation stop body can forcibly stop the rotation of the agitator, so that the surroundings are not caught by the rotation of the agitator, and the agitator itself can be protected.

[0016]

【Example】

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

The suction tool main body 30 includes an upper frame 1 and a lower frame 2.
The agitator 13 is provided at the front, and a brush chamber 17 for collecting dust by the rotation of the agitator 13 is provided. An opening 26 is formed. Pipe 4 and arm 5 connected to the cleaner body (not shown) at the rear
have.

In the arm 5, an air turbine 6 which rotates by utilizing the suction air from the cleaner body is fixed to an air turbine shaft 7, and the air turbine shaft 7 is provided on one side wall of the arm 5. And through an air turbine bearing 8 narrowly provided by the upper frame 1 and the lower frame 2. A pulley small 10 is formed at the end of the air turbine shaft 7, and the drive of the air turbine 6 is transmitted via a belt 11 to a large pulley 12 formed at the end of the agitator 13. Further, the air turbine 6 is rotated by the inflowing outside air because the suction port 9 is open.

When the inflow angle of the suction air for driving the air turbine 6 is set in the air,
The rotation of the air turbine 6 is stopped by setting the inflow wind a18 to flow at an angle nearly parallel to the blades of the air turbine 6 near the suction port 9. When the suction tool main body 30 is located on the floor, a part of the suction port 9 is blocked by the floor, and the inflow air flows into the blades of the air turbine 6 at an angle close to a right angle. The agitator 6 rotates on the floor because it is set to be the inflow b19, and the rotation of the agitator 6 stops automatically when the suction tool is lifted in the air. Does not rotate,
With the above configuration, the durability of the rotating shaft has been improved. further,
When the suction tool is in the air, the rotation of the agitator 6 is stopped, so that the noise of the rotation of the agitator 6 when the cleaning operation is stopped can be eliminated.

(Embodiment 2) A second embodiment will be described with reference to FIG. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The suction port 9 is used to drive the air turbine 6 and is divided into a stop air inlet 21 for controlling the rotation of the air turbine 6 on the suction tool floor side. The pile of carpets closes the stop wind inlet 21 on the carpet, so that only the drive suction port 9 that is efficient for the rotation of the air turbine 6 allows the air to flow in and the air turbine 6 to rotate reliably and efficiently. Can be done. Further, a pile of carpets with long hairs is hardly entangled with the air turbine 6.

(Embodiment 3) A third embodiment will be described with reference to FIG. The same parts as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted.

Since the fins 22 for restricting the inflow angle of the inflow air are formed in the stop air inlet 21, the inflow air can reliably flow in parallel with the fins of the air turbine 6. The stop angle can be set so that the air turbine 6 stops wind inlet 2
1 can be set small, so that the strength near the stop air inlet 21 for the air turbine 6 provided in the lower frame 2 is small, and the air turbine 6 can be surely rotated. Further, since the fins 22 have a role of a lattice, the rotation of the air turbine 6 is not hindered by the inflow of foreign matter.

(Embodiment 4) A fourth embodiment will be described with reference to FIG. The suction hole 23 connected to the air turbine chamber 25 without communicating with the suction chamber opening 26 is provided on the floor grounding side of the suction tool near the suction port 9 so that when the suction tool is positioned in the air, electric cleaning is performed. The suction air generated by the machine flows from the air turbine 6 stop wind inlet 21, the air turbine 6 drive suction port 9, and the suction hole 23, thereby increasing the inflow area and reducing the inflow wind speed, but lowering the suction noise. It is.

(Embodiment 5) A fifth embodiment will be described with reference to FIG. When the rotation is viewed from the counterclockwise direction, the rotation of the pulley small 10 rotation part of the rotation transmitting part by the belt 11 of the suction tool is vertically movable to the right and is located at the upper part. 2 between the belt 2 and the belt 11 forcibly stopping the rotation of the turbine shaft 7
4 is provided so that the suction tool is turned upside down, so that the ball 24 can be moved up and down. When the suction tool is left upside down at the time of cleaning work, the ball 24 is used. The rotation of the agitator 6 is forcibly stopped via the belt 11, and the foreign matter or the agitator 6 itself is protected by the foreign matter being caught in the rotating part of the agitator 6 by mistake when the foreign matter comes into contact with the rotating part. is there.

[0026]

As described above, according to the first aspect of the present invention,
According to the described invention, the agitator rotates on the floor,
By configuring the agitator to automatically stop rotating when the suction tool is lifted in the air, the agitator does not rotate except during cleaning work, thereby improving the durability of the rotating shaft. Further, when the suction tool is in the air, the rotation of the agitator is stopped, so that the noise of the rotation of the agitator when the cleaning operation is stopped can be eliminated.

[0027] According to the second aspect of the present invention, the pile of the carpet can surely block the air turbine stop air inlet, especially on the carpet, and can surely rotate the air turbine. In addition, piles of carpets with long hairs are less likely to be entangled by the air turbine.

According to the third aspect of the present invention, the inflow air can be set at an angle at which the air turbine can be reliably stopped, and the stop wind inlet can be set small. The air turbine can be reliably stopped at the wind inlet. Further, the fins can prevent the rotation of the air turbine due to the inflow of foreign matter.

According to the fourth aspect of the present invention, when the suction tool is positioned in the air, the suction air from the vacuum cleaner flows from the air turbine stop air inlet, the air turbine driving inlet, and the suction hole. By doing so, the inflow wind speed decreases, and the suction noise decreases.

According to the fifth aspect of the present invention, the rotation of the agitator is forcibly stopped by the rotation stopper, and the foreign matter is involved even when the foreign matter contacts the rotating part of the agitator by mistake. It protects foreign matter or the agitator itself.

[Brief description of the drawings]

FIG. 1 is a plan view of a vacuum cleaner suction tool according to first to fifth embodiments of the present invention.

FIG. 2 is a rear view of the suction device.

FIG. 3 is a cross-sectional view of the suction tool.

FIG. 4 is an explanatory view of the operation of the suction tool on a carpet.

FIG. 5 is a view for explaining the operation of the suction tool in the air.

FIG. 6 is a cross-sectional view of a turbine portion of the suction tool for a vacuum cleaner showing the first and second embodiments of the present invention.

FIG. 7 is a sectional view of a turbine portion of a suction tool for a vacuum cleaner, showing a first and a third embodiment of the present invention.

FIG. 8 is a cross-sectional view of a belt portion of the suction tool for a vacuum cleaner, showing the first and fifth embodiments of the present invention.

FIG. 9 is a plan view of a conventional vacuum cleaner suction tool.

FIG. 10 is a sectional view of the suction tool.

[Explanation of symbols]

 Reference Signs List 6 air turbine 9 suction port 14 agitator 19 inflow a 20 inflow b 22 stop inlet 23 fin 24 ball (rotation stop) 25 turbine chamber 30 suction tool body

Claims (5)

[Claims] 1. An air turbine having a plurality of blades and rotated by a suction wind, an air turbine chamber accommodating the air turbine, and an agitator for scraping dust rotated by the air turbine via rotation transmission means. A suction chamber that rotatably houses the agitator, and an inflow port that communicates with the air turbine and communicates with outside air. When the inflow port is located in the air,
The wind flowing from the inlet enters at an angle substantially parallel to the blades of the air turbine, and when the main body is placed on the floor, a part of the inlet is blocked by the floor and from the other part. A suction device for a vacuum cleaner, wherein the incoming wind is set to flow at substantially right angles to the blades. 2. The suction tool for a vacuum cleaner according to claim 1, wherein the inlet is divided into at least an air turbine driving inlet and an air turbine stopping inlet. 3. A fin for regulating an inflow angle of an inflow wind is provided at an air turbine stop inflow port.
Or the suction tool for a vacuum cleaner according to 2. 4. The electric cleaning apparatus according to claim 1, wherein a suction hole that is not directly connected to the suction chamber but is directly connected to the air turbine chamber is arranged on the floor grounding side of the suction tool near the inflow port. Suction tool for machine. 5. A rotation stop body that can move up and down in the main body, and a frame body that houses the rotation stop body and is provided near a rotation transmitting unit, wherein the rotation stop body is turned when the main body is turned over. The suction tool for a vacuum cleaner according to any one of claims 1 to 4, wherein the suction tool is sandwiched between a frame and a rotating portion of the rotation transmitting means, and forcibly stops transmission of power to the agitator by the rotation transmitting means. .