JPH11151187A - Electric cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric cleaner which reduces the parts unable to clean with a rotary cleaner to improve the cleaning efficiency. SOLUTION: A suction mouth body 18 is connected with the connecting mouth of a cleaner body 1 containing an electric blower 20 and provided with a drive control means 22 through a hose and extension pipe with an operating means 13. The suction mouth body 18 constitutes a control means 21 with an air turbine 17 which rotates with a negative pressure produced by the drive of the electric blower 20 and the drive control means 22, and contains a detecting means 25 for detecting rotation of the air turbine 17. The rotation of the air turbine 17 is detected by the detecting means 25, and a desired air quantity by controlling input of the electric blower 20. The first revolving blade and the second revolving blade revolve according to the setting of the operation means 13, linked with the air turbine 17 through a drive transmission means 22. The revolutions of the first revolving blade and the second revolving blade are indirectly detected by the air turbine 17 to eliminate the parts unable to clean.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner in which a rotary cleaning body is rotated by a suction airflow generated by driving an electric blower.

[0002]

2. Description of the Related Art Conventionally, as a vacuum cleaner of this type, for example, a configuration described in Japanese Patent Application Laid-Open No. 62-277927 is known.

An electric vacuum cleaner described in Japanese Patent Application Laid-Open No. 62-277927 has an air turbine which rotates by a suction airflow at a suction port connected via a hose to a cleaner body accommodating an electric blower. An identification means is provided for identifying the state of the rotating cleaning body and the floor surface which are rotated by the rotation of the air turbine. The number of rotations of the rotary cleaning body is detected, and the shutter is slid in accordance with the state of the floor surface identified by the identification means to vary the airflow of the suction airflow, thereby controlling the number of rotations of the air turbine. .

[0004]

However, in the vacuum cleaner described in Japanese Patent Application Laid-Open No. Sho 62-277927, the number of rotations of the rotary cleaning body is detected, that is, the vacuum cleaner is provided at one end of the rotary shaft of the rotary cleaning body. The rotation detecting means detects the number of rotations, so that there is a portion that cannot be cleaned by the rotating cleaning body by the rotation detecting means in the left-right direction of the suction opening body, which is the axial direction of the rotating cleaning body, and cleaning efficiency cannot be improved. . Also,
There is a need for a shutter for varying the flow rate of the suction airflow and a sliding means for sliding the shutter, and there is a problem that the structure is complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has a vacuum cleaner in which a portion that cannot be cleaned by a rotary cleaning body is reduced and cleaning efficiency is improved. The purpose of the present invention is to provide a vacuum cleaner in which cleaning efficiency is improved by appropriately controlling the pressure.

[0006]

According to a first aspect of the present invention, there is provided an electric vacuum cleaner, comprising: a cleaner main body accommodating an electric blower; and a vacuum side of the electric blower connected to the cleaner main body and opposed to a surface to be cleaned. A case body that opens a suction port that communicates with the air turbine, an air turbine that is rotatably provided in the case body and rotates by a suction airflow generated by driving the electric blower, and the air turbine that is rotatably provided in the case body. A rotating cleaning body that rotates via the drive transmission means by the rotation of
And control means for detecting a rotation speed of at least one of the air turbine and the drive transmission means and controlling a drive state of the electric blower.

The control means detects the rotation speed of at least one of the air turbine and the drive transmission means rotatably provided on the case body connected to the cleaner body, and accommodates the electric blower housed in the cleaner body. In order to control the driving state of the air blower, the rotation number of the air turbine that rotates by the suction airflow generated by driving the electric blower whose driving state is controlled is variable, and the rotation number of the rotary cleaning body is variable via the drive transmission means. Therefore, the rotation speed of the rotary cleaning body can be indirectly detected by detecting the rotation speed of the air turbine or the drive transmission means, and the rotation cleaning body generated when the rotation speed of the rotary cleaning body is directly detected is cleaned. Eliminate the impossible parts and improve the cleaning efficiency.

According to a second aspect of the present invention, there is provided an electric vacuum cleaner body having a main body for accommodating the electric blower, and a suction port connected to the main body of the cleaner and opposed to a surface to be cleaned and communicating with a negative pressure side of the electric blower. An opening case body, a rotating cleaning body rotatably provided in the case body and rotating by a suction airflow generated by driving the electric blower, and directly or indirectly detecting the rotation speed of the rotating cleaning body. Control means for controlling the driving state of the electric blower to keep the rotation speed of the rotary cleaning body constant.

The control means directly detects the rotation of the rotary cleaning body rotatably provided on the case body connected to the cleaner body, that is, detects the number of rotations of the rotary cleaning body,
Alternatively, in order to control the driving state of the electric blower housed in the cleaner body indirectly, that is, by detecting the rotation speed of the air turbine or the drive transmission means so that the rotation speed of the rotating cleaning body is constant, Due to the rotation of, the scraping property of scraping dust from the surface to be cleaned becomes constant regardless of the state of the surface to be cleaned, and the cleaning efficiency is improved.

According to a third aspect of the present invention, there is provided a vacuum cleaner having a cleaner main body accommodating the electric blower, and a suction port connected to the cleaner main body and opposed to a surface to be cleaned and communicating with a negative pressure side of the electric blower. A case body that opens, a rotating cleaning body rotatably provided in the case body and rotating by a suction airflow generated by driving the electric blower, operating means for setting the number of rotations of the rotating cleaning body, and the operating means And control means for controlling the driving state of the electric blower in accordance with the number of rotations of the rotary cleaning body set by (1).

The control means controls the driving state of the electric blower housed in the cleaner body in accordance with the rotation speed of the rotary cleaning body set by the operation means. In response to the above, the rotating cleaning body is rotated at the set predetermined number of revolutions by the suction airflow generated by the driving of the electric blower whose driving state is controlled, so that the predetermined rotation speed is determined according to the cleaning situation of the cleaning worker. Dust scraping property is obtained by the rotary cleaning body set to the number of rotations, and cleaning efficiency is improved.

A vacuum cleaner according to a fourth aspect of the present invention is the vacuum cleaner according to the first or third aspect, further comprising identification means for identifying a state of a surface to be cleaned, and control means for controlling the cleaning identified by the identification means. The driving state of the electric blower is controlled in accordance with the state of the surface.

The control means controls the driving state of the electric blower of the cleaner main body in accordance with the state of the surface to be cleaned identified by the identification means. Since the number of rotations of the rotary cleaning body that rotates by the suction airflow generated by driving the electric blower whose driving state is controlled is variable, the scraping property of dust corresponding to the surface to be cleaned is variable, and the cleaning efficiency is improved.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a vacuum cleaner according to an embodiment of the present invention;

In FIG. 6, reference numeral 1 denotes a cleaner body, and the cleaner body 1 has a lower case 2a having an open upper surface;
Upper case 2b that closes the rear upper surface of this lower case 2a
Is a main body case 2 as a case body having a front upper surface portion opened by being joined to a peripheral edge including a front surface by sandwiching a main body bumper 3.
And a lid 4 that rotatably supports the lid 4 that closes the opening of the front upper surface so as to be openable and closable.

The main body case 2 is provided with a swivel wheel (not shown) on the front lower surface in the traveling direction, and large-diameter driven wheels 5 and 5 are rotatably provided on both rear side surfaces. , The cleaner body 1 includes a turning wheel and a driven wheel 5,5.
And can run on the floor. A handle 6 slidable in the vertical direction is provided on the upper part of the main body case 2.

Further, a connection port 8 to which a hose 7 is connected is formed on the front side of the cleaner body 1.

The hose 7, the flexible hose body 10
And the cleaner body 1 provided at one end of the hose body 10.
The hose connecting pipe 11 is detachably inserted into and connected to the connection port 8, and a gripping pipe 12 provided at the other end of the hose body 10. The hose connection pipe 11 has a male connector portion having a pair of pin terminals (not shown), which are detachably connected to a female connector portion (not shown) provided at the connection port 8 of the cleaner body 1. Is provided. This male connector is electrically connected to an electric wire (not shown) built in the hose 7. Further, this electric wire is connected to operating means 13 provided with a plurality of switches 13a, 13a provided on gripping tube 12.

An extension pipe 14 is detachably connected to the gripping pipe 12 of the hose 7, and has a first rotating blade 15 and a second rotating blade 15 as a rotary cleaning body at its tip. A suction port main body 18 provided with an air turbine 17 for rotationally driving the blade 16 is detachably connected.

Next, the structure of the cleaner body will be described with reference to the block diagram of FIG.

In the cleaner body 1, an electric blower 20 is disposed on the rear side. A dust collection chamber which communicates with the suction side of the electric blower 20, which is the suction side, and which is open at the upper side where the dust collection filter is detachably mounted and which is opened and closed by the lid 4, is defined on the front side. The dust collecting chamber communicates with a connection port 9 formed at the front side of the cleaner body 1 facing the opening. The electric blower 20 is connected to a power supply line (not shown) to which a commercial AC power supply E is supplied.

Further, an electric blower is provided in the cleaner body 1.
A circuit board (not shown) provided with a drive control means 22 which is partitioned above the top 20 and constitutes a control means 21 for controlling the drive state of the electric blower 20 is provided. Also electric blower
Identification means for detecting the state of negative pressure between 20 and the dust collection chamber
A pressure sensor (not shown) constituting the component 23 is provided, and this pressure sensor is connected to the drive control means 22 constituting the component.
Further, the drive control means 22 is provided with a storage means 24. The storage means 24 stores, for example, a threshold value as a signal corresponding to the drive state of the electric blower 20 set by the operation of the operation means 13, and the set first rotary blade 15
For example, a threshold value is stored as a signal corresponding to the rotation speed of the second rotary blade 16.

The drive control means 22 is connected to a detection means 25 for detecting the rotation speed of the air turbine 17 of the suction port main body 18 via the hose 7 and the extension pipe 14. The control means 21 is constituted by the detection means 25.

Next, the structure of the suction port main body 18 will be described in detail with reference to the drawings.

2 to 5, the suction port main body 18
Is a lower body case 31 that is horizontally long in the traveling direction and is made of a synthetic resin such as acrylonitrile-butadiene-styrene (ABS) resin and has an upper surface opened.
An upper body case 32 having an open lower surface made of the same material and fixed to the upper part of the upper cover 31 so as to cover the upper opening and a lower body case
A case body 34 as a rectangular case body is formed by sandwiching and joining a bumper 33 along a peripheral surface including the front surface of the upper body case 31 and the upper body case 32.

The lower body case 31 has a rib 35 formed substantially vertically on the upper surface, and a suction chamber as a rotary cleaning body chamber which is horizontally elongated in the left-right direction on the front side which is the advancing direction side and opens on the lower surface. A first cleaning body chamber 36 having a concave groove shape is formed, and is formed on the rear side, which is a retreating direction side. A second cleaning body chamber 37 is formed. The case body 34 also includes a suction chamber 39 that opens downward at a substantially central portion of the rear portion of the second cleaning body chamber 37 by a rib 35 and opens a suction port 38 that also functions as a leak port. A first drive transmission chamber 40 partitioned from the substantially center between the first cleaning body chamber 36 and the second cleaning body chamber 37 and the other end side, and a suction chamber 39 substantially above the second cleaning body chamber 37. An intake chamber 42a that is partitioned on both sides and that opens a plurality of intake ports 41 formed in the upper body case 32;
42b, a second drive transmission chamber 43 partitioned on the other end side from the first drive transmission chamber 40, and a shaft support chamber 44 partitioned on an end opposite to the second drive transmission chamber 43. The compartment is formed.

The suction port 38 expands in a trumpet shape toward the second cleaning body chamber 37, and the opening at the lower surface of the second cleaning body chamber 37 has a substantially central rear portion recessed rearward and convex. An opening is formed in the shape of a letter. Further, the lower surface of the second drive transmission chamber 43 is opened downward, and a closing plate 45 as a cover body is detachably attached to this opening by a mounting tool 46.

Further, on the lower surface of the lower main body case 31, a brush having a brushed cloth 48 which is positioned between the first cleaning body chamber 36 and the second cleaning body chamber 37 and extends substantially in the left-right direction. Body49
Is detachably attached.

The case body 34 has a first cleaning body chamber.
A substantially cylindrical communication passage for communicating the cleaning body chamber 36 and the second cleaning body chamber 37.
50 are provided. The communication passage 50 allows the suction port
Like the opening on the lower surface of the second cleaning body chamber 37 in which the opening 38 opens,
An opening on the lower surface of the first cleaning body chamber 36 communicates with the suction port 38 to form a suction port for sucking dust.

Further, in the center of the rear portion of the case body 34, a communication pipe 52 has a rotating shaft 53 whose one end is positioned in the suction chamber 39 and faces the suction port 38 and whose other end is rotatable at a predetermined vertical angle. , 53
Are supported by a lower body case 31 and an upper body case 32 so as to be pivotally mounted. And the suction chamber 39 is a communication pipe
A suction air passage 54 is formed in communication with the suction air passage 52. In addition, communication pipe
A rear end of the projection 52 protrudes rearward and outward from the suction port main body 18, and a front end of a bent connection pipe 55 is rotatably fitted to the rear end. The connection pipe 55 is detachably connected to the hose 7 via the extension pipe 14, and is further connected to the cleaner body 1.

On the other hand, a middle case 58 for partitioning a turbine chamber 57 for rotatably accommodating the air turbine 17 serving as a flat driving means therein is fixedly mounted substantially at the center of the case body 34. And, this middle case 58 is
A first bearing chamber 61 that opens downward is provided for fixing a first bearing 60 that rotatably supports a lower end of a shaft body 59 that is a substantially cylindrical rotary shaft of the lower body case 31. There is a first partition 62 that partitions the first drive transmission chamber 40 with the rib 35. Also, the middle case 58,
Second bearing 63 that rotatably supports the upper end of shaft body 59
And a second bearing chamber 64 that opens upward and that is held and positioned at the lower surface of the upper body case 32 to hold and fix the first partitioning section 62 with the upper body case 32.
And a second partitioning section 65 that partitions the turbine chamber 57.

Further, in the first partitioning portion 62, the air turbine 17 which flows in the turbine chamber 57 in a substantially trumpet shape facing the outer peripheral portion of the lower surface of the air turbine 17 in the upward direction is rotated, and the first partitioning portion 62 is rotated. An intake regulating section 67 for regulating the flow of an intake airflow 66 serving as an intake airflow for rotating the rotary blade 15 and the second rotary blade 16 is provided. And this intake regulation part
The intake air flow 66 passing through the turbine chamber 57 is discharged from the intake control section 67 to the opening 67, which is provided adjacent to the intake port 38, not opposed to the suction port 38, opposed to the communication pipe 52, and communicates with the suction chamber 39. An intake / exhaust port 69 is formed to flow through the communication pipe 52 together with the suction airflow 68 flowing through the suction chamber 39. Note that the opening area of the intake / exhaust port 69 is formed to be smaller than the opening area of the intake port 38.

The intake regulating section 67 includes an upper body case.
A call-in portion 72 is provided on the lower surface of 32 and the first partitioning portion 62 to form a pair of intake air supply passages 71a and 71b which form a part of the intake air passage 70 and spread in a trumpet shape in the circumferential direction. ing. Further, these intake supply air passages 71a and 71b include:
An inclined surface 73 inclined toward the outer peripheral edge of the lower end of the air turbine 17
The intake supply air passages 71a and 71b communicate with the turbine chamber 57 in a scroll-like manner so as to become gradually narrower and have a gradually decreasing cross-sectional area. The air is supplied to the air turbine 17 on the inclined surface 73 efficiently at the position substantially in the radial direction symmetrical with respect to 59. One end of the intake supply air passages 71a, 71b, which open in a trumpet shape, is located at both sides of the communication pipe 52 at the rear of the upper main body case 32 and communicates with the intake ports 41 which are respectively opened via the intake chambers 42a, 42b. Have been.

In order to supply the intake airflow 66 in the rotation direction of the air turbine 17, one intake supply air passage 71a is opened toward the rear of the case body 34, and the other intake supply air passage 71a is opened.
b opens toward the front of the case body. For this reason,
In the intake chamber 42b on the side of the other intake air supply passage 71b, an intake port 41 opened at the rear of the upper
A curved rectifying plate 74 is provided as rectifying means for smoothly changing the direction of the intake airflow 66 sucked toward the front of the case main body 34 into the intake air supply passage 71b opened toward the front of the case body 34. It should be noted that the left and right opening areas of the intake port 41 that opens on both sides of the communication pipe 52 at the rear of the upper main body case 32 are formed so as to have substantially the same area.

In the upper body case 32, a window 76 closed by a light transmitting member 75 is formed at a position corresponding to the intake air supply passage 71a.

Further, a substantially cylindrical weight 77 as an obstructing body is provided in the intake section 72 as a closed body.
A pair of weight accommodating portions 78a and 78b which are movably accommodated in the movable portions 71a and 71b, respectively, are provided in the radial direction of the turbine chamber 57. Further, a first bypass air passage 79a communicating with the inside of the intake regulating portion 67 downstream of the turbine chamber 57 is formed below one of the weight accommodating portions 78a. A second bypass air passage 79b communicating with the communication passage 50 is formed below the other weight housing portion 78b. And
First bypass air passage 79a and second bypass air passage 79b
In the normal state in which the lower surface of the suction port main body 18 faces downward, that is, when the weight bodies 77, 77 are accommodated in the weight accommodating portions 78a, 78b, respectively, and do not enter the intake supply air passages 71a, 71b. , Is to be closed.

Then, from the intake port 41, the intake chambers 42a, 42b,
Intake air supply passages 71a, 71b, turbine chamber 57, intake control section 67
Inside, a suction chamber that forms the suction air passage 54 via the intake / exhaust port 69
An intake air path 70 communicating with 39 and reaching the communication pipe 52 is formed. That is, the suction port 38 is opened downstream of the air turbine 17 in the intake air passage 70 without facing the air turbine 17.

On the other hand, the air turbine 17 has a substantially disk-shaped umbrella portion 81 slightly curved in a funnel shape toward the center side, and a shaft body 59 is fitted and fixed substantially at the center of the lower surface on the curved surface side. A cylindrical support portion 82 is integrally formed, and is formed on the lower surface of the umbrella portion 81 on the curved surface side so as not to be located at the center portion but in a substantially radial shape and the lower end edge of the intake control portion 67 has a slight gap. A plurality of curved wind receiving plates 83, 83 are integrally formed so as to protrude in a wall shape so as to face each other, and are configured in a horizontal turbine shape. Further, a mark 84 is provided on the upper surface of the umbrella portion 81 and is located on the outer peripheral side and can be confirmed from the window portion 76 of the upper main body case 32. The mark 84 is formed by applying a paste containing a magnetic material and a pigment, for example.

At the other end of the shaft 59, an air turbine pulley 85 constituting a drive transmission means is integrally provided.

The air turbine 17 has an air turbine pulley 85 protruding from the lower end of the middle case 58 facing the first drive transmission chamber 40.
The shaft 60 is axially supported substantially vertically in the second bearing 63, and is rotatably supported in the turbine chamber 57.
In addition, by supporting both ends of the shaft body 59 with the first bearing 60 and the second bearing 63, the first partitioning portion 62 is formed.
The second partition 65 is integrally assembled, and the middle case 58 accommodating the air turbine 17 is assembled.

Further, above the air turbine 17, there is provided a detecting means 25 for detecting the magnetism of a hall element or the like for detecting the magnetism of the mark 84 and detecting the number of rotations of the air turbine 17 with a predetermined gap therebetween. It is arranged.

A driven rear wheel chamber 86a is provided on both sides of the communication pipe 52 of the lower body case 31 and has a driven rear wheel 86 rotatably supported on the shaft. A driven front wheel 87 is rotatably provided on both front ends. A driven front wheel chamber 87a that is pivotally supported is formed.

On the other hand, the first cleaning body chamber 36 and the second cleaning body chamber 37 have a first rotating blade 15 as a rotating cleaning body.
And a second rotating blade 16 are rotatably arranged. The first rotating blade 15 and the second rotating blade 16 protrude in a plurality of spirals from a blade portion 91 which is a scraping means as a cleaning portion made of, for example, soft vinyl chloride having a flexible peripheral surface. For example, a mandrel 92 formed in a substantially rod shape with an aluminum alloy or the like is provided.

At one end of each of the first rotary blade 15 and the second rotary blade 16, a pulley 93 constituting a drive transmitting means is integrally provided on a mandrel 92, respectively. Then, the first rotating blade 15 and the second rotating blade 16
The pulleys 93, 93 are located in the second drive transmission chamber 43, and the shaft portions 94, 94 rotatably provided at both ends in the axial direction are respectively provided on bearings 95, 95 provided on the case body 34. It is engaged and rotatably supported. The lower ends of the first rotary blade 15 and the second rotary blade 16 are disposed so as to protrude slightly downward from the openings on the lower surfaces of the first cleaning body chamber 36 and the second cleaning body chamber 37. I have.

On the other hand, in the first drive transmission chamber 40, a drive conversion means 101 constituting a drive transmission means is provided.
The drive conversion means 101 is capable of rotating a substantially rod-shaped first shaft 103 having an axial direction extending in a vertical direction in a box 102 disposed at an end of the first drive transmission chamber 40. It is pivoted. And at the lower end of the first shaft 103,
A first endless belt 104a, which is an endless belt that constitutes a drive transmission unit with the air turbine pulley 85 of the air turbine 17
The first pulley 105 over which the first drive transmission chamber 40
And a first bevel gear 106a is provided at the upper end.

Further, a substantially rod-shaped second shaft 107a and a third shaft 107b are provided in the box body 102.
Are arranged so as to be rotatable vertically substantially in parallel along the horizontal direction. The second shaft 107a is provided at one end with a second bevel gear 106b that engages with the first bevel gear 106a of the first shaft 103, and at the other end with a second bevel gear facing the second drive transmission chamber 43. 2
And a first gear 10 at one end from the intermediate portion.
9a is provided. Further, at one end of the third shaft 107b, a second gear 109b that engages with the first gear 109a of the second shaft 107a is provided, and at the other end, a second drive transmission chamber is provided.
A third pulley 110 facing 43 is provided. The second pulley 108 of the second shaft 107a has the first
The second endless belt 104b constituting the drive transmission means is wound around the pulley 93 of the rotary blade 15 and the third pulley 93 in an inclined manner.
The third pulley 110 of the shaft 107b is connected to the pulley 93 of the second rotary blade 16 by a third
Endless belt 104c is stretched in a substantially horizontal direction.

The rotation of the air turbine 17 causes the first
The first shaft 103 rotates via the endless belt 104a, and the rotation causes the second shaft 107a to rotate via the first bevel gear 106a and the second bevel gear 106b. The first gear 109a and the second gear 109b meshing with each other by the rotation of the second shaft 107a form the third shaft 107b.
Rotate in the opposite direction with respect to the second shaft 107a. Then, the first rotary blade 15 rotates in the forward direction with respect to the forward direction of the suction port main body 18 via the second endless belt 104b, and the second rotary blade 16 moves in the forward direction of the suction port main body 18. , Ie, they rotate inward from each other.

Next, the operation of the above embodiment will be described.

At the time of cleaning, the cleaner main body 1 is connected to the suction main body 18 via the extension pipe 14 and the hose 7, and power is supplied through a power supply line (not shown) of the cleaner main body 1. Then, the electric blower 20 is driven by operating the operating means 13 of the grip portion 12 of the hose 7, and is pushed while gripping the grip portion 12, which is the end of the hose 7 on the side of the extension pipe 14, and the suction port main body is moved. 18 is moved back and forth on the floor to be cleaned. In this state, the weights 77, 77 are located in a state of being housed in the weight housing portions 78a, 78b by their own weights, respectively, and the intake supply air passage 71a
, 71b are open, that is, the intake port 41 is in communication with the turbine chamber 57, and the first bypass air passage 79a and the second bypass air passage 79b are closed.

Then, various switches 13a,
With the suction force of the cleaner body 1 generated by the electric blower 20 driven by the operation 13a, air is sucked from the suction port 41 and air is also sucked from the suction port 38. here,
Since the suction port main body 18 is placed on the floor surface, the second cleaning body chamber 37 having the suction port 38 opened and the first cleaning body chamber 37 communicating with the second cleaning body chamber 37 through the communication passage 50. , The negative pressure in the lower surface of the suction port body 18 increases. Therefore, the amount of intake air from the intake port 41 tends to increase.

Further, when the floor surface is a carpet such as a carpet, particularly a long-haired carpet, the first cleaning body room 36 and the second cleaning body room are used.
Since the bristle feet enter the state inside the 37, the negative pressure in the first cleaning body chamber 36 and the second cleaning body chamber 37 further increases,
The amount of intake air from the intake port 41 further increases.

The air sucked from the air inlet 41 is a trumpet-shaped air supply passage 71a, 71 whose cross-sectional area is gradually reduced.
b, while being rectified, reaches the turbine chamber 57 in a spiral shape, and is supplied on the inclined surface 73 so that the intake airflow 66 is blown against the head 81 of the air turbine 17.
Accordingly, the air turbine 17 rotates at a speed proportional to the amount of intake air. This rotational driving force is transmitted to the drive converting means 101 via the first endless belt 104a, and the rotational driving with the vertical direction is converted into two rotational driving forces with the horizontal direction as the axis. After the conversion, the first rotating blade 15 and the second rotating blade 16 rotate in opposite directions to each other via the second endless belt 104b and the third endless belt 104c at a speed proportional to the intake air amount. Then, dust is scraped from the floor surface by the rotation of the first rotary blade 15 and the second rotary blade 16. This scraped-out first cleaning body chamber
The dust located in the inside 36 reaches the second cleaning body chamber 37 via the communication passage 50, and the dust located in the second cleaning body chamber 37 is:
It is sucked through the suction port 38 as it is, and flows through the communication pipe 52 through the suction chamber 39. Further, the intake airflow 66 flowing into the turbine chamber 57 joins with the intake airflow 68 from the inside of the intake regulating section 67 below the air turbine 17 through the intake outlet 69 through the intake chamber 39 constituting the intake air passage 54. Then, it flows to the communication pipe 52.

In order to remove lint or hair from the movement of furniture or the like when the first rotating blade 15 and the second rotating blade 16 are entangled with the suction port, the suction port main body is removed.
When the lower surface of 18 is separated from the floor, the negative pressure of suction chamber 39 greatly increases to a state close to the atmosphere. For this reason, the suction chamber 39 communicates with the suction chamber 39 via the intake / exhaust port 69.
The negative pressure in the intake regulating section 67 located on the upstream side of the turbine chamber 57 also increases to a state close to the atmospheric state, and the negative pressure in the turbine chamber 57 also increases greatly. The intake outlet opening to the intake regulating section 67
69 indicates that the opening area is smaller than the opening area of the suction port 38,
Since the air turbine 17 serving as an air path resistance is provided in 70, the air volume of the intake airflow 66 from the intake port 41 is greatly reduced or almost no intake airflow 66 is generated,
The rotation of the air turbine 17 is greatly reduced or stopped.

Further, when the suction port main body 18 is lifted from the floor surface and the lower surface of the suction port main body 18 is directed upward, the weight body 77 is positioned below the weight receiving portions 78a, 78b by its own weight. Move toward 32. An intake air supply passage 71 that constitutes an intake air passage 70 opened by the movement of the weights 77, 77.
Weights 77, 77 are located in the air supply passages 71a, 71b, respectively, to block the intake air supply passages 71a, 71b, and the first bypass air passages.
79a and the second bypass air passage 79b are opened. Then, due to the blockage of the intake supply air passages 71a and 71b, the intake port is temporarily
Even if the intake airflow 66 from the airflow 41 occurs, the supply of the intake air to the turbine chamber 57 is cut off and the first bypass airflow path 79
a and the second bypass air passage 79b, the air is sucked into the suction chamber 39, so that the intake airflow 66 does not flow to the air turbine 17,
When the rotation of the air turbine 17 stops, the first rotating blade
The rotation of 15 and the second rotating blade 16 stops.

Then, the first rotating blade 15 and the second rotating blade 15
In order to remove the first rotary blade 15 and the second rotary blade 16 to remove lint, hair, and the like entangled with the rotary blade 16, the mounting tool 46 is removed and the closing plate is removed.
45, the pulleys 93, 93 are moved downward with the shafts 94, 94 on the side where the pulleys 93, 93 are not provided as fulcrums, and the shafts 94, 94 on the pulleys 93, 93 are mounted on the bearings 95, 94. 95, the second endless belt 104b and the third endless belt 104c.
Pulleys 93, 93 are removed from the shaft, and the shafts 94, 94 that serve as fulcrums
Can be removed by removing from 95,95. In the case of assembling, the opposite operation is performed.

When the floor surface to be cleaned is a carpet or the like, the hair of the carpet enters the suction port 38, and the negative pressure on the lower surface of the suction port body 18 increases. Further, when the floor surface is between the plates, a negative pressure does not become relatively large because a gap is formed between the lower surface of the suction port main body 18 and the plates. For this reason, the control means 21 identifies the state of the floor surface by the negative pressure detected by the pressure sensor constituting the identification means 23 provided on the negative pressure side of the electric blower 20.

On the other hand, as shown in FIG. 7, the rotation state of the air turbine 17 rotated by the drive of the electric blower 20 is detected by detecting the magnetism of the air turbine 17 by the detecting means 25 and passing through the extension pipe 14 and the hose 7. In the control means 21 of the cleaner body 1,
The rotation status is recognized by detecting the rotation speed based on the output from the detection unit 25.

When the operation means 13 is operated to keep the rotation speeds of the first rotating blade 15 and the second rotating blade 16 constant, for example, the detecting means 25
The rotation state of the rotating air turbine 17 is detected by the control means 21 to determine the rotation speed of the air turbine 17, that is, for example, the output opposed to the magnetism detected from the detection means 25 is output to the extension pipe 14 and the hose 7. The control means 21 converts the output as a transmitted detection result into a predetermined current value, and the converted current value is within a predetermined threshold range stored in the storage means 24. It is determined whether or not. Then, the control means 21 performs control to increase the input of the electric blower 20 when the current value of the detection result is smaller than the lower limit threshold, and controls the input of the electric blower 20 when the current value is larger than the lower limit threshold. The driving state of the electric blower 20 is controlled by performing control to reduce the pressure. By controlling the driving state of the electric blower 20, the suction force of the cleaner body 1 is varied in accordance with the rotation speed of the air turbine 17, and the suction air amount and the intake air amount from the suction port 38 and the suction port 41 are changed. The rotation speed of the air turbine 17 is increased or decreased so as to be a predetermined rotation speed, and the rotation speeds of the first rotating blade 15 and the second rotating blade 16 become constant.

Further, for example, the setting for cleaning the carpet by the operating means 13, that is, the setting of "strong" in which the first rotating blade 15 and the second rotating blade 16 are rotated at a high speed and the dust is firmly scraped off from the floor surface. In the same manner, when the rotation state of the air turbine 17 is detected by the detection means 25 and the rotation speed of the air turbine 17 is determined by the control means 21,
The drive state is controlled by supplying a predetermined high input to the electric blower 20 so that the intake air amount and the intake air amount from the 38 and the intake port 41 become a predetermined air amount, and the air turbine 17 is rotated at a predetermined high-speed rotation. The first rotating blade 15 and the second rotating blade 16 are rotated at high speed.

When a setting of "weak" for low-speed rotation, such as a setting for cleaning between plates, is made, a predetermined low input is supplied to the electric blower 20 to control the drive.

In addition, automatic control, for example, the first rotary blade 15 and the second rotary blade 16 are automatically set in a rotating state in accordance with the state of the floor surface, that is, when the floor surface is a carpet, etc. The first rotating blade 15 and the second rotating blade 16 are rotated at a high speed to thoroughly remove dust from the floor surface,
When the floor is set between plates, the first rotating blade 15 and the second rotating blade 16 are set to rotate at a low speed to sweep out dust. Detects a negative pressure on the negative pressure side of the electric blower 20 to output a predetermined current value, and a current value corresponding to the negative pressure detected by the control means 21 falls within any of the threshold ranges stored in the storage means 24. The state of the floor surface is identified by judging whether or not the floor surface. Then, in response to the identified state of the floor surface, the drive state of the electric blower 20 is changed so that the input of the electric blower 20 is varied so that the intake air volume and the intake air volume from the suction port 38 and the intake port 41 become a predetermined air volume. Is controlled, and the rotation speed of the first rotating blade 15 and the second rotating blade 16 is appropriately changed by the air turbine 17 whose rotation speed is changed according to the air volume changed according to the state of the floor surface.

As described above, the rotational speeds of the first rotating blade 15 and the second rotating blade 16 for variably controlling the rotating speeds of the first rotating blade 15 and the second rotating blade 16 are set to the first rotating blade 15 and the second rotating blade 16. In order to detect indirectly by detecting the rotation of the air turbine 17 that drives the rotary blade 15 and the second rotary blade 16 to rotate, a conventional magnet provided on a rotary cleaning body is rotated by a magnetic sensor or the like. There is no portion that cannot be cleaned with the rotary cleaning body by the magnet and the magnetic sensor as in the case of directly detecting
It is possible to clean substantially the entire area of the lower surface of the suction port main body 18 in the left-right direction, thereby improving the cleaning efficiency.

Then, the first rotating blade 15 and the second
By controlling the number of rotations of the rotating blade 16 to be constant, the scraping property of scraping dust from the floor by the rotation of the first rotating blade 15 and the second rotating blade 16 is independent of the state of the floor. It can be constant, and cleaning efficiency can be improved.

The state of the floor is identified by the identification means, and the first rotary blade 15 and the second
By varying the number of rotations of the rotating blades 16, for example, in automatic operation, when the floor is difficult to remove dust only with the suction force of a carpet or the like, the floor rotates at high speed to scrape out the dust, and the floor is When dust can be sufficiently removed only by the suction force between the plates or the like, low-speed rotation is performed to reduce noise such as wind noise caused by rotation of the first rotating blade 15 and the second rotating blade 16, and to operate the electric blower.
Energy savings can be achieved by reducing the input of 20, and automatic operation can be performed without the need to change the rotation state appropriately in accordance with the state of the floor surface.

Further, the number of rotations of the first rotary blade 15 and the second rotary blade 16 is appropriately set by the operating means 13, and the input of the electric blower 20 is changed corresponding to this setting to perform the first rotation. When the blade 15 and the second rotating blade 16 are rotated at the number of rotations corresponding to the setting, for example, when cleaning a surface to be cleaned that may be attracted to the suction port 38 such as a futon, the cleaning operator may be required The number of rotations can be appropriately set according to a desired cleaning situation, so that the cleaning performance is improved and the cleaning efficiency can be improved.

In the above embodiment, not only the canister type vacuum cleaner but also an upright type in which the suction port main body 18 is formed directly on the lower surface of the vacuum cleaner main body,
The present invention can also be applied to a self-propelled vacuum cleaner in which the vacuum cleaner body and the suction port body 18 are integrated.

Further, the intake ports 41 are located on both sides of the communication pipe 52 and are respectively opened.
It is also possible to adopt a configuration in which the suction air flow 68 from the suction opening 38 rotates without providing the 41.

The flat type air turbine 17 has been described with the vertical axis as the axis. However, any type of air turbine, such as an axial type, which rotates by the negative pressure generated by driving the electric blower 20 can be used. You can do it with a turbine.

Further, the first rotating blade 15 and the second rotating blade 16 are rotated by the suction airflow via the air turbine 17 and the drive transmitting means. However, for example, the air turbine 17 and the drive transmitting means are provided. Instead, the first rotating blade 15 and the second rotating blade 16 are rotated by the suction airflow, for example, by causing the suction airflow to directly act on the blade portion 91 to rotate.
May be rotated.

On the other hand, as the rotary cleaning body, a blade 91
In addition to the first rotating blade 15 and the second rotating blade 16 having a brush, a rotating brush provided with a raised brush in a wall shape, a rotating blade provided with a cloth blade portion, a brush, a cloth blade portion, and a blade portion 91 are combined. Any of these may be used.

In the above description, the first rotating blade 15 and the second rotating blade 16 are provided in the first cleaning body chamber 36 and the second cleaning body chamber 37, respectively. The same effect can be obtained even if a plurality of rotary cleaning bodies are provided in one rotary cleaning body chamber.

In the above description, the rotational speed of the air turbine 17 is directly detected, but the rotational speed of the drive transmitting means for transmitting the rotational drive of the air turbine 17 to the first rotary blade 15 and the second rotary blade 16 is described. For example, each endless belt 104a, 104
The number of rotations from the air turbine 17 to the first rotating blade 15 and the second rotating blade 16 is detected, for example, by detecting the number of rotations of the shafts 103, 107a, and 107b of the drive conversion means 101. The same effect can be obtained in any of the configurations in which the rotation speed is detected in the drive transmission path.

Although the rotational state of the air turbine 17 is detected by magnetism, any method such as detecting the number of rotations by using light reflection can be used.

Further, the detected rotation speed of the air turbine 17 is transmitted to the control means 21 of the cleaner main body 1 via the electric wire, which has been described. In addition to the electric signal by the electric wire, radio waves, sound waves, infrared rays, It may be transmitted by a wireless medium using light such as an electron beam.

Further, the operating means 13 is not provided with a structure for setting the number of rotations of the first rotating blade 15 and the second rotating blade 16 such as "strong" and "weak", and always rotates at a constant rotation speed. The input of the electric blower 20 may be controlled as described above, or the input of the electric blower 20 may be controlled such as “automatic” so as to always reach a predetermined rotation speed in accordance with the condition of the floor surface. In the case of controlling the rotation at a constant rotation speed, the rotation speeds of the first rotating blade 15 and the second rotating blade 16 may be directly detected. Operating means
In the case where a configuration for setting the number of rotations of the first rotary blade 15 and the second rotary blade 16 such as “strong” and “weak” is provided in the storage unit 24, for example,
A threshold value or the like to be controlled is stored in the input of the electric blower 20 for obtaining an air volume at which the rotation speed of the rotating blade 15 and the second rotating blade 16 becomes a predetermined rotation speed, and the input is performed in accordance with the setting operation of the operation means 13. The value may be controlled.

Further, identification means 23 for identifying the state of the floor surface
In addition to the method of measuring the negative pressure on the negative pressure side of the electric blower 20 with a pressure sensor, identification by any method such as current, power, air volume, frictional resistance, etc., flowing through the electric blower 20 that varies depending on the state of the floor surface May be. When the rotation speeds of the first rotary blade 15 and the second rotary blade 16 are not set according to the state of the floor surface, the identification means 23 may not be provided.

[0077]

According to the first aspect of the present invention, the control means detects the number of rotations of at least one of the air turbine for rotating the rotary cleaning body and the drive transmission means and stores the rotation number in the cleaner body. The driving state of the electric blower is controlled, the rotation speed of the air turbine that rotates by the suction airflow generated by the driving of the electric blower whose driving state is controlled is changed, and the rotation of the rotary cleaning body is driven through the drive transmission means. Since the number of rotations can be changed, the rotation speed of the rotary cleaning body can be indirectly detected by detecting the rotation speed of the air turbine or the drive transmission means. This eliminates parts that cannot be cleaned and improves cleaning efficiency.

According to the second aspect of the present invention, the control means detects directly or indirectly the number of rotations of the rotary cleaning body which rotates by the suction airflow, and the electric blower housed in the cleaner body. Is controlled so that the number of rotations of the rotary cleaning body is constant, so that the rotation of the rotary cleaning body can sweep out dust from the surface to be cleaned irrespective of the state of the surface to be cleaned. Can be improved.

According to the third aspect of the present invention, the control means controls the driving state of the electric blower in accordance with the number of rotations of the rotary cleaning body set by the operation means. In accordance with the number of rotations of the body, the rotating cleaning body is rotated at a predetermined number of rotations set by the suction airflow generated by driving the electric blower whose driving state is controlled, so it corresponds to the cleaning situation of the cleaning worker. As a result, dust can be scraped out by the rotary cleaning body set to a predetermined number of rotations, and the cleaning efficiency can be improved.

According to the fourth aspect of the present invention, in addition to the effect of the vacuum cleaner of the first or third aspect, the control means controls the state of the surface to be cleaned identified by the identification means. In order to control the driving state of the electric blower of the main body of the cleaner correspondingly, in accordance with the state of the identified surface to be cleaned, the rotary cleaning is rotated by a suction airflow generated by driving the electric blower whose driving state is controlled. Since the number of rotations of the body is variable, the scraping property of dust can be changed according to the surface to be cleaned, and the cleaning efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a vacuum cleaner according to the present invention.

FIG. 2 is a partially cutaway plan view showing the suction port main body.

FIG. 3 is a bottom view of the same.

FIG. 4 is a front sectional view of the same.

FIG. 5 is a sectional side view of the same.

FIG. 6 is a perspective view showing the main body of the cleaner.

FIG. 7 is a graph showing a state of detection of the number of revolutions of the air turbine by the detecting means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 13 Operating means 15 1st rotary blade as a rotary cleaning body 16 2nd rotary blade as a rotary cleaning body 17 Air turbine 20 Electric blower 21 Control means 23 Identification means 34 Case main body as a case body 38 Suction Port 66 Intake airflow serving as intake airflow 85 Air turbine pulley constituting drive transmission means 91 Pulley constituting drive transmission means 101 Drive conversion means 104a constituting drive transmission means First endless belt 104b constituting drive transmission means Driving Second endless belt 104c constituting the transmission means Third endless belt constituting the drive transmission means

Claims (4)

[Claims] A vacuum cleaner main body accommodating an electric blower, a case body connected to the vacuum cleaner main body and having a suction opening communicating with a negative pressure side of the electric blower on a lower surface facing a surface to be cleaned; An air turbine rotatably provided on the body and rotated by a suction airflow generated by driving the electric blower; and a rotary cleaning body rotatably provided on the case body and rotated via drive transmission means by rotation of the air turbine. And a control means for detecting a rotation speed of at least one of the air turbine and the drive transmission means and controlling a driving state of the electric blower. 2. A cleaner body for accommodating the electric blower, a case body connected to the cleaner body and having a suction opening communicating with a negative pressure side of the electric blower on a lower surface facing the surface to be cleaned, A rotating cleaning body rotatably provided on a body and rotating by a suction airflow generated by driving the electric blower; and directly or indirectly detecting a rotation speed of the rotating cleaning body to control a driving state of the electric blower. And a control means for keeping the number of rotations of the rotary cleaning body constant. 3. A cleaner body for accommodating the electric blower, a case body connected to the cleaner body and opening a suction port communicating with a negative pressure side of the electric blower on a lower surface facing the surface to be cleaned; A rotary cleaning body rotatably provided on a body and rotated by a suction airflow generated by driving the electric blower; operating means for setting the number of rotations of the rotary cleaning body; and the rotary cleaning body set by the operating means A controller for controlling the driving state of the electric blower in accordance with the number of revolutions of the vacuum cleaner. 4. An identification means for identifying a state of the surface to be cleaned, wherein the control means controls a driving state of the electric blower in accordance with the state of the surface to be cleaned identified by the identification means. The vacuum cleaner according to claim 1.