JP2009022339A - Vacuum cleaner suction tool and vacuum cleaner using the same - Google Patents

Abstract

[PROBLEMS] To provide a suction tool for a vacuum cleaner that has a low rotational noise on a flat floor surface, has excellent dust removal performance, and that also powerfully removes dust even on a carpet.
A bearing portion 31 that supports a shaft 29 of a rotating brush (agitator) is formed, a roller 30 that rotates on a surface to be cleaned is held below the shaft 29 of the rotating brush, and the roller 30 is moved up and down. The rotary brush shaft 29 is linked and held by the bearing 31 so as to be movable up and down, and when the rotary brush moves upward, the rotary brush comes into contact with the top surface 32 above. As a result, the rotating brush 3 moves upward on the wooden floor surface, and the rotational speed can be suppressed by contacting the top surface 32 to reduce the rotational noise. The rotating brush can also move upward on the carpet. Therefore, it is possible to provide an easy-to-use vacuum cleaner suction tool that exhibits excellent rotational force and provides high performance on any floor surface.
[Selection] Figure 8

Description

  The present invention relates to a suction tool for a vacuum cleaner.

Conventionally, this type of suction tool rotates the agitator 43 by applying air sucked from an air flow path 41 provided in front of the agitator storage portion 44 to the blade 42 as shown in FIG. The structure which collects dust is taken (for example, refer patent document 1).
JP-A-11-123165

  However, the conventional configuration as described above has a disadvantage that noise increases as the rotational speed of the agitator 43 increases. In particular, when cleaning a flat surface to be cleaned such as a wooden floor, the surface to be cleaned and the agitator 43 are kept at a certain distance, so that the load applied to the agitator 43 is suppressed and the suction air volume is large. And the agitator was rotating at high speed and the sound was loud.

  On the other hand, when cleaning a surface to be cleaned such as a carpet, the agitator 43 bites into the hair of the carpet, and in order to rotate the agitator, it is necessary to increase the wind speed or the air volume to increase the rotational force.

  However, if the wind speed is simply increased, the wind noise will increase, and even if the suction opening is increased in order to increase only the air volume, the position where the wind hits the agitator 43 will be dispersed, increasing the rotational force. Was insufficient. In some situations, it has been confirmed that a part of the agitator 33 passes above and a flow in the reverse rotation direction occurs.

  Therefore, in the past, measures have been taken such as inclining the air flow path 41 in order to create an airflow in an obliquely downward direction, but this reduces the area of the air inlet, increasing the wind speed and increasing the wind noise. It was.

  The present invention solves the above-mentioned problems. On a flat surface to be cleaned such as a wooden floor surface, the number of rotations of the agitator is suppressed to reduce rotational noise, and on a surface to be cleaned such as a carpet surely. An object of the present invention is to provide an easy-to-use suction tool for an electric vacuum cleaner in which an agitator rotates and exhibits excellent garbage collection.

  In order to solve the above-described problems, the present invention provides an agitator storage chamber in which an agitator equipped with a brush or a blade is rotatably mounted, and a connection that communicates with the agitator storage chamber and connects to a connection part of the cleaner body. A suction port for dust collection provided at a position facing the floor surface, and an air inlet provided on the front surface for sucking air for rotating the agitator, Forming a bearing portion that supports the shaft of the agitator, holding a roller that rotates on the surface to be cleaned below the shaft of the agitator, and linking the vertical movement of the roller to move the shaft of the agitator up and down The bearing is freely held by the bearing portion, and when the agitator moves upward, the agitator comes into contact with the top surface above the agitator.

  As a result, when the agitator moves upward on a flat and hard floor surface such as a wooden floor, the agitator and the top surface come into contact with each other, and the rotation of the agitator can be suppressed. Can be prevented, the rotation speed of the agitator can be reduced, the rotational noise can be reduced, and on a soft floor surface, the agitator is located below the bearing part. Easy-to-use vacuum cleaner suction that provides high performance on any floor surface because it does not hinder the rotation of the agitator and can secure the number of rotations on the floor surface of carpets, etc., and the dust collection performance does not deteriorate. Tools can be provided.

  According to the present invention, regardless of the state of a surface to be cleaned such as a wooden floor surface or a carpet surface, the electricity that exhibits excellent dust collection performance for any surface to be cleaned while suppressing rotational noise as necessary. A vacuum cleaner suction tool can be provided.

  The first invention has an agitator storage chamber in which an agitator equipped with a brush or a blade is rotatably mounted, and a connection pipe that communicates with the agitator storage chamber and connects to a connection part with the cleaner body. The agitator storage chamber includes a dust collection inlet provided at a position facing the floor, an air inlet provided on the front surface for sucking air for rotating the agitator, and an axis of the agitator. Forming a bearing portion to be supported, holding a roller that rotates on a surface to be cleaned below the shaft of the agitator, and linking the roller with the vertical movement of the roller so that the shaft of the agitator can move up and down freely In addition, when the agitator moves upward, the agitator comes into contact with the top surface of the agitator.

  As a result, when the agitator moves upward on a flat and hard floor surface such as a wooden floor, the agitator and the top surface come into contact with each other, and the rotation of the agitator can be suppressed. Can be prevented, the rotation speed of the agitator can be reduced, the rotational noise can be reduced, and on a soft floor surface, the agitator is located below the bearing part. Easy-to-use vacuum cleaner suction that provides high performance on any floor surface because it does not hinder the rotation of the agitator and can secure the number of rotations on the floor surface of carpets, etc., and the dust collection performance does not deteriorate. Tools can be provided.

  In the second invention, the top surface of the agitator of the first invention holds a material that generates a negative charge when the agitator rotates. When the agitator rotates, a negative charge is generated and the positive charge is generated. Thus, the dust collection efficiency can be improved by sucking the charged dust, and the decrease in the dust collection performance caused by the rotation of the agitator when the agitator comes into contact with the upper top surface can be compensated.

  The third invention is a vacuum cleaner using the vacuum cleaner suction tool of the first or second invention, regardless of the state of the surface to be cleaned such as a wooden floor surface or a carpet surface, It is possible to provide an electric vacuum cleaner that exhibits excellent dust removal performance on any surface to be cleaned while suppressing rotational noise as necessary.

(Embodiment 1)
Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS. In addition, this invention is not limited by this embodiment.

  1 is a vacuum cleaner suction tool according to a first embodiment of the present invention, in which a rotating brush (agitator) 3 in which brushes 2 are arranged is attached to bearing parts 5 at both ends of a rotating brush storage chamber (agitator storage chamber) 4. It is deployed freely. The rotary brush storage chamber 4 is formed with a cross section having substantially the same diameter as the rotary brush 3, and a suction port 7 is provided at the bottom. Reference numeral 9 denotes a yuka nozzle pipe (connection pipe) for connection to the extension pipe 10, which is in communication with the rotary brush storage chamber 4, and the dust sucked from the suction port 7 passes through the yuka nozzle pipe 9 and passes through the extension pipe 10. , And the vacuum cleaner body 8 through the hose 11.

  The yuka nozzle pipe 9 and the rotating brush storage chamber 4 are connected to each other so as to be rotatable in the vertical direction, and 12 indicates the center of rotation (the specific configuration is the same as the existing configuration, and the description thereof is omitted). ).

  An air inflow port 14 for taking in suction air different from the suction port 7 is formed in the lower front part of the rotating brush storage chamber 4, and air for rotating the rotating brush 3 is taken in. The opening area of the air inlet 14 is set so that about 30% of the suction air volume of the cleaner body can be sucked on a flat floor surface, and even when the suction port 7 is blocked, it is 50 to 70%. The pressure loss is suppressed to such an extent that the air volume is sucked. Two air inlets 14 are formed near the center in front of the storage chamber 4 so that the suction air strikes the vicinity of the center of the rotating brush 3. Reference numeral 16 denotes a roller disposed in the front-rear direction, and maintains the distance from the floor so that the tip of the brush 2 of the rotating brush 3 protrudes 1 mm from the bottom 8.

  Reference numeral 17 denotes a protruding portion formed in front of the rotating brush storage chamber 4, which serves as a reinforcing material that receives an impact when it hits a wall, and has a roller 16 disposed in a freely rotating manner attached thereto. An upper air inlet 18 that opens upward is formed on the upper surface of the projecting portion 17, and a front air intake port 19 that opens forward is formed on the front surface of the projecting portion 17. It is arranged in line with the position.

  More specifically, the upper air intake 18 is positioned higher than the air inlet 14 and is formed in a direction substantially orthogonal to the air inlet 14. On the other hand, the front air intake 19 is located at a position facing the air inlet 14 and is opened in a direction substantially orthogonal to the upper air intake 18. A flat plate 20 is formed below the upper air intake 18, and the downstream side of the flat plate 20 reaches the air inlet 14 of the rotary brush storage chamber 4 and enters from the upper air intake 18 and the front air intake 19. Air is guided to the air inlet 14.

  Reference numeral 21 denotes a rotation restraining plate attached so as to be movable up and down, and is guided by the shaft portion 22 to move up and down.

  The operation of the above configuration will be described.

  When placed on a flat surface to be cleaned such as a wooden floor, air is sucked from the suction port 7, the air inlet 14, and the rear groove 15 by the suction force of the cleaner body 11. About 70% of the suction air volume of the vacuum cleaner body 11 is sucked from the suction port 7, about 25% is sucked from the air inlet 14, and about 5% is sucked from the groove 15.

  The air sucked from the air inlet 14 rotates the rotating brush 3 and exerts an action of scuffing up the dust on the floor surface, and collects dust on the floor surface together with the suction air from the suction port 7. At this time, the air entering the air inlet 14 becomes a downwardly flowing airflow because the vertical airflow entering from the upper air inlet 18 and the horizontal airflow entering from the front air inlet 19 collide with each other. Enter storage room 4. Therefore, wind hits the outer diameter side of the rotating brush 3, and a high torque torque is exhibited. However, the air sucked from the air inlet 14 is about 25% of the total suction amount, and the rotational speed of the rotary brush 3 does not increase remarkably.

  In the present invention, when the suction tool 21 is placed on a flat and hard floor surface such as a wooden floor, the shaft portion 22 of the rotation suppressing plate 21 moves upward, thereby contacting the shaft 23 of the rotating brush 3. Rotation is suppressed. Conventionally, on a flat surface to be cleaned, the rotating brush rotates at a high speed (about 5000 revolutions / minute) and generates a high rotational noise. Silencing can be achieved by controlling the rotation.

  On a soft floor such as a carpet, the rotation suppression plate 22 moves downward and does not come into contact with the shaft of the agitator, so that the rotation is not hindered and the number of rotations does not decrease on the carpet.

(Embodiment 2)
In the present embodiment, as shown in FIG. 7, a rotation suppression plate 24 that is pivotally supported at the lower front portion of the rotating brush storage chamber 4 is held. The roller 25 held in front of the rotation suppression plate 24 rotates and moves upward on a flat and hard floor surface such as a wooden floor. As a result, the rotation suppression plate rotates downward and comes into contact with the shaft 26 of the agitator 3. Thereby, rotation of the agitator 3 is suppressed. On a soft floor such as a carpet, the rotation suppression plate is separated from the axis of the agitator 3 and does not hinder the rotation of the agitator.

(Embodiment 3)
In the present embodiment, as shown in FIG. 8, the shaft portion 29 of the agitator 3 is held vertically and a bearing portion 31 that holds the roller 30 is formed below the shaft 29. Thereby, on a hard floor surface such as a wooden floor, the agitator 3 itself is moved upward. As a result, the agitator 3 comes into contact with the top surface 32 of the agitator storage chamber 4. At this time, the agitator 3 receives frictional resistance and the rotational speed decreases.

  In addition, as a method of suppressing the rotation speed, there is no problem even if the method shown in FIG. That is, the shaft 27 of the agitator 3 is held so as to be movable up and down, and the bearing portion 28 is formed to have a smaller diameter as it goes upward, so that the agitator 3 moves upward on the surface of the wooden floor or the like, and the shaft 27 Since it is held so as to be movable up and down, it moves upward, but the bearing portion 28 is formed with a small diameter at the top, and when the shaft 27 moves, it receives the frictional resistance of the bearing portion 28, thereby rotating the agitator 3. Is suppressed, and an increase in noise can be suppressed.

(Embodiment 4)
In the present embodiment, as shown in FIG. 10, since the ion plate 33 such as polyvinyl chloride is held as an example in which a negative charge is generated when the agitator 3 rotates and contacts the top surface 32 of the agitator storage chamber 4, the agitator 3 is rotated. A negative charge is generated, and the positively charged dust is collected. Therefore, good dust collection performance can be maintained even when the rotational speed is lowered.

  As described above, the vacuum cleaner suction tool and the vacuum cleaner using the vacuum cleaner according to the present invention can be applied to any surface to be cleaned while suppressing rotational noise as necessary regardless of the state of the surface to be cleaned. It can exhibit excellent dust removal performance, and can be widely applied for business use and is extremely useful.

Sectional drawing of the vacuum cleaner suction tool in Embodiment 1 of this invention Same as above, top view of vacuum cleaner suction tool Same sectional view of the vacuum cleaner suction tool Cross-sectional view of vacuum cleaner suction tool Same external perspective view of vacuum cleaner (A) Main part cross-sectional view of the suction tool for vacuum cleaners (b) Main part longitudinal cross-sectional view of the suction tool for vacuum cleaners (c) AA cross-sectional arrow view of (a) Sectional drawing of the principal part of the vacuum cleaner suction tool in Embodiment 2 of this invention (A) Main part cross-sectional view of the suction tool for vacuum cleaners in Embodiment 3 of this invention (b) Main part longitudinal cross-sectional view of the suction tool for vacuum cleaners (c) AA of (a) Cross section view (A) The principal part cross-sectional view which shows the other Example regarding the suction tool for vacuum cleaners in the same (b) Same part main part longitudinal cross-sectional view (c) AA sectional arrow directional view of (a) Sectional drawing of the principal part of the vacuum cleaner suction tool in Embodiment 4 of this invention. Sectional drawing of the vacuum cleaner suction tool in a conventional example

Explanation of symbols

1 Vacuum cleaner suction tool 2 Brush 3 Rotating brush (agitator)
4 Rotating brush storage room (agitator storage room)
7 Suction port 9 Yuka nozzle pipe (connection pipe)
14 Air inlet 29 Shaft 30 Roller 31 Bearing part 32 Top surface 33 Ion plate

Claims (3)

An agitator storage chamber rotatably mounted with an agitator equipped with a brush or a blade, and a connection pipe that communicates with the agitator storage chamber and connects to a connection part with a vacuum cleaner body; the agitator storage chamber Includes a suction port for dust collection provided at a position facing the floor surface, an air inlet provided on the front surface for sucking air that rotates the agitator, and a bearing portion that supports the shaft of the agitator. Forming and holding a roller rotating on the surface to be cleaned below the shaft of the agitator, linking with the vertical movement of the roller and holding the shaft of the agitator up and down freely in the bearing portion, and A vacuum cleaner suction tool configured such that when the agitator moves upward, the agitator contacts the top surface above the agitator. The suction tool for a vacuum cleaner according to claim 1, wherein a material that generates a negative charge when the agitator is in rotational contact with the top surface above the agitator is held. The vacuum cleaner using the suction tool for vacuum cleaners of Claim 1 or 2.

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