JP2004222738A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner which enables a sheet to be automatically attached to/detached from a rotating brush of a suction implement for a floor, which brings about good floor polishing effects by attaching the sheet, and which can be quietly operated. <P>SOLUTION: When a floor polishing mode switch is operated, the sheet is attached to the rotating brush, and a first control means controls a rotation number so that the rotation number can be most suitable for good floor polishing using the attached sheet. A second control means weakens a suction force so that the sheet can be attached without a hindrance. Additionally, a peeling switch is operated so that a third control means reversely rotates the rotating brush at low speed, and the sheet is removed so as to be automatically wound back. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an electric vacuum cleaner, and more particularly to an operation control of an electric vacuum cleaner for performing wiping cleaning by attaching a dust absorbing sheet to a rotating brush in a suction tool effectively and in an optimal state without generating noise. About.
[0002]
[Prior art]
As a conventional vacuum cleaner, a rotary brush having a bristle brush or a rubber blade is housed in a floor suction tool, and the rotary brush is driven to rotate when the vacuum cleaner is running to scrape off dust on the floor surface. In addition, there is known a device which can efficiently clean by sucking the scraped dust. In addition, in the floor suction tool having such a rotating brush, a cloth member such as a pile-like member to which dust easily adheres is used so that wiping cleaning suitable for cleaning a living room on a floor surface (flooring), which has been increasing in recent years, can be performed. A floor suction tool spirally affixed to a rotating brush (for example, Patent Document 1), a floor suction tool provided with a similar cloth member at the tip of a blade portion of the rotating brush (for example, Patent Document 2), and the like. Has also been proposed.
[0003]
[Patent Document 1]
JP-A-5-192271
[Patent Document 2]
JP-A-11-56707
[0004]
[Problems to be solved by the invention]
However, in the structure disclosed in Patent Document 1, the cloth member is attached to the rotating brush, so that in order to remove the cloth member from the rotating brush at the time of garbage disposal, the cloth member must be peeled off, and the removal work is troublesome. there were. Also, when replacing the suction device, it is necessary to turn the suction tool over and wrap the cloth member around the rotating brush in the narrow case space, and stick the adhesive cloth member to the suction device body case other than the rotating brush. There was a difficulty that it was necessary to attach it carefully while being careful.
[0005]
Further, in the device disclosed in Patent Document 2, since a cloth blade portion is separately formed in front of the blade portion of the rotating brush, the rotating brush has a complicated structure, and the cloth blade is consumed. When replacing the rotary brush, it is difficult to say that the entire rotary brush needs to be replaced, and that the rotary brush itself is not enough in terms of practicality such as troublesome reattachment.
[0006]
The present invention has been made in view of the above points, and a dust-adhesive sheet is automatically wound around a rotating brush by the rotation of the rotating brush, and can be mounted. Wiping cleaning and polishing exerted by the rotation of the mounted sheet can be performed. It is an object of the present invention to provide a vacuum cleaner in which the effect and the removal of the sheet can be achieved by appropriately controlling the rotation speed and the rotation direction of the rotating brush.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a vacuum cleaner body having a built-in electric blower for dust collection, a flexible hose connected to the vacuum cleaner body, and an extension tube connected to the flexible hose. A hand switch portion disposed on a grip portion formed on the extension tube connection side of the flexible hose, a rotating brush, and a drive motor for rotating and driving the rotating brush are built in and connected to the extension tube. Floor suction device, and a vacuum cleaner comprising:
The dust suction sheet is wound around the rotary brush of the floor suction device so that the dust suction sheet can be mounted. The hand switch unit is provided with a floor polishing mode switch, and the drive motor is controlled according to the operation of the floor polishing mode switch. The rotating brush is provided with first control means for controlling the rotation speed to an optimal rotation speed for mounting the dust absorbing sheet and polishing the floor with the mounted dust absorbing sheet.
[0008]
Further, there is provided a second control means for controlling the number of revolutions of the electric blower so as to control the dust collecting force to an optimum dust collecting force when polishing the floor with the dust absorbing sheet.
[0009]
Further, the floor suction device includes a floor detection switch for detecting a state of contact with or separating from the floor surface and operating / stopping the drive motor.
[0010]
Furthermore, a peeling portion is provided on the front surface of the main body case of the suction tool to be engaged with the rear end of the sheet, and a peeling mode switch is provided on the hand switch portion, while the peeling mode switch is operated in accordance with the operation of the peeling mode switch. And a third control unit that controls the driving motor to control the rotating brush to rotate at a low speed in a reverse direction suitable for removing the suction sheet.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
The floor suction device 1 of the vacuum cleaner shown in FIGS. 1 to 30 is a horizontally long suction device body including an upper case 2a and a lower case 2b and having a wide opening 6 formed from the lower surface to the front surface. The case 2, a rotary brush 3 rotatably supported via bearings at both ends in the longitudinal direction of the suction tool main body case 2, and a suction port 6 communicating with the suction port 6 on the rear side of the suction tool main body case 2 and up, down, left and right , And a cover 5 that constitutes a front wall of the suction tool main body case 2 and opens and closes a front portion 6b of the suction port 6. The bend 4 is an extension pipe (not shown). It is designed to be connected to the main body of the vacuum cleaner via a hose. A long bristle brush 90 is disposed in a groove formed at the rear of the bottom surface of the lower case 2b so that it can be cleaned by contacting the surface to be cleaned. The bristle brush 90 has a structure that can be attached to and detached from the case 2b. When the bristle tips become dirty, the bristle brush 90 can be removed from the lower case 2b and washed.
[0012]
As shown in FIGS. 5 and 6, the rotating brush 3 has a brush body (or blade body) 8 on the outer peripheral surface of a core body 7 at an equal angle, for example, 90 ° or 60 ° in the longitudinal direction. A plurality of them are formed in a spiral shape. A specific method of providing the brush body 8 can be attached by fitting the root portion 8b into a spiral groove formed on the outer peripheral surface of the core body 7. Although not shown, the brush body 8 is configured so that its driving force is transmitted via a conductive belt or the like by a brush motor 101 built in the suction tool main body case 2 and is driven to rotate. As the brush body 8 rotates, dust on the floor surface is scraped off, effectively sucked from the suction port 6, and efficiently cleaned.
[0013]
The cover 5, which is located close to the brush body 8 so as to cover the front part thereof, has arms (not shown) integrally formed at both ends in the longitudinal direction, and is formed inside the both ends of the main body case by the arms. It is rotatably supported. When the front end of the suction tool hits the wall surface when cleaning the wall or the like, the cover 5 rotates to rotate the cover 5 upward to open the front portion of the suction port 5. The roller 9 is rotatably mounted at both ends by bearings 9a, 9a. Here, the positional relationship between the rotating shaft of the cover 5 and the roller 9 is such that when the roller 9 at the forefront of the cover 5 is pressed against a wall surface or the like, the roller 5 rotates counterclockwise while the cover 5 rotates. The roller 9 is set so as to rotate upward so as to be positioned above a rotation axis that is the center of rotation of the cover 5, thereby opening the cover 5.
[0014]
Although not shown, the cover 5 has a configuration in which a torsion spring (not shown) is attached to a rotation shaft thereof as urging means for urging the cover 5 in a direction of turning the cover 5 downward. Therefore, during normal floor cleaning in which the front end of the suction tool does not hit a wall surface such as a wall, the cover 5 closes the front portion of the suction port 6 and opens only the lower portion. When the cover 5 is opened, as shown in FIG. 9, the cover 5 is formed in the upper case 2a so as to be stowed from the rear end so as to be housed inside the suction tool main body case 2. A hollow storage recess 10 is provided.
[0015]
The roller 9 also serves as a bumper for absorbing shock when the front side of the suction tool main body case 2 hits an obstacle during vacuuming. Therefore, as shown in FIG. It is preferable that the outer peripheral surface of the cylindrical body 11A having the outer surface 11 is covered with a raised cloth 11d which is a fibrous member as a soft and slippery contact member. The attachment can be reliably prevented, and the cover 5 can be rotated extremely smoothly. In addition, this is useful in that the left and right movements when cleaning in the horizontal direction while the roller 9 is in contact with the wall surface by the raised cloth 11d are also smooth.
[0016]
Now, as shown in FIG. 7, the rotating brush 3 of the suction tool 1 adsorbs dust such as cloth or paper, for example, kitchen paper, so as to enable a cleaning method similar to wiping with a rag. The obtained suction sheet 12 (hereinafter, abbreviated as a sheet) has a structure that can be automatically wound and mounted.
[0017]
Next, a specific configuration for mounting the seat 12 will be described with reference to FIGS. First, as shown in FIG. 7, FIG. 14, etc., the rectangular sheet 12 is placed in front of the suction tool 1 and the rotating brush 3 is evenly placed on the end of the sheet 12 as shown in FIGS. In this state, when the operation switch of the vacuum cleaner is turned on and the rotating brush 3 is rotated, the seat 12 is automatically entangled with the rotating brush 3 by the rotating brush 3 and mounted. At the time of mounting the sheet, the rotating brush 3 is controlled to an appropriate rotation speed so that the sheet is not broken.
[0018]
Here, the conventional rotary brush 14 has a general structure in which brush bodies 13b of the same length are provided at regular intervals (in this case, 90 °) on the outer periphery of the core body 7 as shown in FIG. In the brush, there was a step D between the portion having the brush body 13b and the portion not having the brush body 13b, so that the sheet 12 was difficult to wind uniformly.
[0019]
Also, as shown in FIG. 23, when the sheet 12 is wound, the brush body 13b falls down from the root portion 13d due to the winding of the sheet 12, and remains deformed even after the sheet 12 is removed, so that the dust removing effect of the brush body 13b is poor. There was a problem of becoming.
[0020]
In the case of the present invention, the rotating brush 3A has a structure shown in FIGS. 24 to 26, and has a structure in which two long and soft bristle brushes 15a are arranged on the outside and two short and hard bristle brushes 15b are arranged on the inside. A rotating brush composed of three types of brush bodies: a brush body 15, a second brush body 16 having a longest bristle brush 16a planted therein, and a third brush body 17 having a second length bristle brush 17a planted therein. 3A, the first brush body 15 is spirally arranged on the outer peripheral surface of the core body 7 at 120 ° intervals along the three-row axial direction, and the second brush body 16 and the third brush body 17 are The brushes 15 are arranged so as to sandwich the brush 15 therebetween.
[0021]
FIG. 26 shows a state in which the sheet 12 is wound around by the rotating brush 3A. When the leading end (front end) of the sheet 12 comes into contact with the rotating brush 3A, the brush 12 is retracted as the brush 3A rotates. Tangles around 17. When the sheet 12 is entangled, each of the three types of brush bodies 15 to 17 deforms (bends) according to the hardness (softness) of the bristles as shown in FIG. The inner surface is brought into contact with the inner surface without difficulty, and the sheet 12 maintains a round shape that does not distort. Thereby, the sheet 12 is wound in a state of being stretched round. Further, in the first brush body 15, the outer long bristle brush 15 a is kept in an upright state, and the bristle tip comes into contact with the inner surface of the sheet 12 at right angles. In this case, the three first brush bodies 115 are arranged at intervals of 120 degrees, so that the three brush bodies 15 uniformly support the inside of the sheet 12 at three points as a whole. It is useful to keep the sheet 12 tight and wind it evenly. Further, since the short brush body 15b of the first brush body 15 is not involved in the entanglement with the sheet 12, there is no problem that the root like the conventional brush body 3b is bent.
[0022]
Also, when the second and third brush bodies 16 and 17 are bent, any one of the first to third types of brush bodies is not provided with a large space on both sides of each other (to fill the space). As a result, each of the brush bodies 15 to 17 disperses the stress from the sheet 12 and bends moderately, so that the conventional brush body 13b does not undergo extreme deformation such that the root of the brush body 13b is extremely bent. No. 17 is extremely bent and the polishing effect is not lost. In addition, three types of brush bodies 15 to 17 are uniformly arranged in a large number around the core body 7 in a total of seven, and the rotary brush 3A in which a step D between the brush bodies is eliminated, It is also possible to wind the sheet 12 while keeping the tension.
[0023]
The rotating brush 3B shown in FIG. 27 is another embodiment that enables sheet winding. In this case, the ribs 18 are provided on the core 7 of the rotating brush 3B. The ribs 18 have a bifurcated shape that is opened in an outward C-shape, and are integrally formed on the outer periphery of the core body 7 so as to be present between the brush bodies 19. . The ribs 18 are formed concentrically with the core body 7 and have a length shorter than that of the brush body 19. In the case of the rotary brush 3B having the ribs 18 so as to fill the space 20 between the brush bodies 19, the ribs 18 are similar to the conventional rotary brush 14, and the brush bodies which hinder the winding of the sheet 12 are provided. This eliminates the step created between the part having the unevenness and the part not having the unevenness, and the sheet 12 can be uniformly wound.
[0024]
The sheet 12 can be wound around the rotating brush 3 also by a method as shown in FIG.
[0025]
That is, the sheet 12 is inserted from the gap 22 between the front surface of the case 1 of the suction tool 1 and the roller 9 provided in the case 1, and the inserted sheet 12 is wound by the rotating brush 3. In this case, the entire front edge of the sheet 12 is pressed down by the rollers 9 which are long enough in the lateral direction so as to be more than the width of the sheet 12, and the left and right sides of the sheet 12 are guided by the rollers 9. As the sheet 9 is rotated, the sheet 12 is fed in a state where the entire surface of the sheet 12 is stretched uniformly, so that the rotating brush 3 can be wound uniformly. For this reason, when the sheet 12 described above is inserted into the rotary brush 3 in the suction port 6 from below the suction tool 1, the position shift that sometimes occurs when the sheet 12 and the rotary brush 3 are set may occur. As a result, the sheet 12 is attached diagonally, and a sufficient wiping effect cannot be obtained, and the front edge of the sheet 12 is crumpled and starts to be wound, It is advantageous in that the problem of uneven mounting and the problem that the end of winding of the sheet 12 hangs down on the floor surface to cause noise and the like can be eliminated by the guide action of the roller 12. .
[0026]
To guide and feed the sheet 12 using the roller 9, a brushed cloth 23 is mounted on the roller 9 as shown in FIG. This is because if the roller 9 is a roller having a low resistance such as a resin, the roller 9 slides when guiding the sheet 12, and it may be difficult to obtain a desired uniform winding effect. A brushing cloth 23 is attached to the surface or the hair is planted. If a member having resistance such as a raised cloth 23 is formed on the outer periphery of the roller 9, the contact resistance between the roller 9 and the sheet 12 is increased, so that the entire surface of the sheet is stretched uniformly and more reliably and smoothly. As a result, the sheet 12 can be wound around the rotating brush 3 in the intake port 6 on average.
[0027]
As shown in FIGS. 7 and 14 and the like, the sheet 12 is wound around the rotating brush 3 having the above-described structure and then rotated, so that dirt and dust on the floor surface can be reliably wiped off by the sheet 12. In addition, the polishing effect is added, and the floor surface can be cleaned neatly.
[0028]
On the other hand, when wiping is completed and the dirty sheet 12 is discarded, or when a new sheet 12 is replaced and mounted, it is necessary to remove the sheet 12. The seat 12 can be removed by hand. As shown in FIG. 9, the free end 12d on the winding end side of the sheet 12 wound around the rotary brush 3 in the suction port 6 can be picked up with a finger, pulled forward, and removed by hand. Alternatively, by rotating the rotating brush 3, as shown in FIG. 13, the leading end portion of the sheet comes into contact with the leading end 5 d of the cover 5 and is peeled off, and the sheet 12 can be removed from the rotating brush 3 by being unwound. In this case, the rotating brush is reversed as described later.
[0029]
Also, when removing the seat 12, as described above, if the cover 5 is opened and closed up and down to form the front wall of the suction tool main body case 2, the seat 12 can be easily taken out. Although the cover 5 is closed by a spring or the like, as shown in FIG. 9, when the cover 5 is manually moved upward so as to be housed in the main body case and opened like a shutter, the suction port 6 is opened before the cover opening operation. The opening changes from a small opening where it is difficult to take out the lower part, to a large opening that also opens the front. For this reason, it becomes easy to touch the sheet 12 with the opening 6b of the front part, and the sheet 12 can be picked up and easily taken out.
[0030]
When the sheet 12 is wound around the rotating brush 3, it is convenient if the wound state can be easily confirmed. That is, as shown in FIG. 11, a transparent member is formed so that the front portion of the suction device main body case 2 is a transparent portion 12A, or as shown in FIG. A peep hole 24, in this case, a pair of peep holes 24, 24 is provided on the left and right. The viewing hole 24 is preferably a transparent window covered with a transparent member so that dust does not enter. In this way, if it is known whether the sheet 12 has been wound properly, if the winding is not good, it is possible to rewind the sheet 12 and mount it properly.
[0031]
Also, as shown in FIG. 15, when the rear end of the sheet 12 is cut obliquely into a triangular shape as shown in FIG. 15, or when the rear end of the sheet 12 is cut into an M shape as shown in FIG. The twelve edges are exposed, and the noises hitting the floor are reduced.
[0032]
That is, when a general rectangular sheet is wound as a sheet and the sheet is operated, an abnormal sound is generated due to the rear part of the sheet (the end of the end of the sheet) being exposed or the sheet end being sucked into the suction port. . On the other hand, when the tip is triangular or M-shaped like the sheet 12, the sheet end pieces 12b, 12c, and 12c are the front portions having a small contact area with the floor or the case (suction device main body case). Since the phenomenon of hitting the floor surface at the end as in the case of the conventional rectangular sheet is eliminated, the occurrence of abnormal sound is suppressed. Further, the flapping of the sheet edge can be suppressed.
[0033]
FIGS. 17 to 19 show another sheet in which the sheet 12 is wound around the sheet 12 so as not to be wound.
[0034]
In the sheet 12 of FIG. 17, a string 25 is provided at the front end (starting end of winding) of the sheet 12 by sewing or bonding. In this case, as shown in FIG. 18, the string 25 is entangled with an arbitrary brush body 8 of the rotating brush 3, so that the string is steadily wound from the front end.
[0035]
In the sheet 12 shown in FIG. 19, a hard material such as a wire 26 is sewn to the leading end, and the leading end (the winding start end) is a hard structure, that is, a hardened edge portion 27. With this configuration, when the sheet is mounted, the front end of the sheet is tightened by the wire 26 or the like, so that the front end is not crumpled, and is mounted on the rotating brush 3 in a uniform state, so that stable winding can be performed.
[0036]
Further, in the case of FIG. 20, the loop of the string 28 is provided on both sides of the front end of the seat 12. On the other hand, a hook 29 on which the loop of the string 28 is hooked is formed on the core 7 toward the rotating brush 12. With this configuration, as shown in FIG. 21, the loop of the string 28 is hooked on the hook 29, so that the hook 28 is wound uniformly from the front end. Alternatively, the end of the sheet 12 can be fixed to the core of the rotating brush 3 using a removable tape.
[0037]
By providing the locking means at the tip of the sheet 12, the front edge of the sheet 12 can be wound around the rotating brush 3 in a uniform and stable state without crumpling.
[0038]
By changing the shape of the sheet 12 or providing a means for attaching to the rotating brush 3, the sheet 12 can be easily wound. However, the brush body (blade) 8 of the rotating brush 3 is shown in FIGS. In the case of the one-way spiral shape as described above, as the sheet 12 is wound or as the operation is continued after winding, the sheet 12 may be biased to one side, and the wiping effect and the floor polishing effect may be reduced.
[0039]
Considering this point, in providing the brush body (blade) 8 on the peripheral surface of the core body 7, as shown in FIG. 28, when the core body 7 is viewed horizontally, the brush body (blade) 8 becomes V-shaped. It is good to adopt such an arrangement form. That is, the brush body (blade) 8 may be formed so as to be wound around the core body 7 in one direction obliquely toward the center in the longitudinal direction of the shaft, and to be folded back from the center part and wound around the core body 7 in the opposite direction. .
[0040]
In this way, the sheet 12 wound around the surface of the brush body 8 receives contact resistance from the V-shaped arrangement of the brush body 8 due to the rotation of the rotating brush 3, and the sheets 12 are mutually separated as a resistance component. The force in the stretching direction is generated on the left and right. This prevents a problem that the sheet 12 shifts to one side and starts to bias. Therefore, even during rotation, the sheet 12 is wound and maintained at the proper position, and the wiping and cleaning effects can be sufficiently obtained.
[0041]
FIG. 29 shows a configuration in which a guide rib 30 that exerts a similar sheet stretching action is provided on the main body case 2 side, and the rotation locus of the inner wall surface 2D of the main body case 2 (upper case 2a) surrounds the upper part of the brush. A guide rib 30 along the shape is formed. The guide ribs 30 are arranged and formed in a V-shape such that the guide ribs 30 open in both sides from the center in the longitudinal direction of the rotating brush 3. The guide rib 30 is formed to have a length such that its tip projects so as to come into contact with the sheet 12 wound around the rotating brush 3. The sheet 12 is guided by the guide ribs 30 provided in such a form, and a contact force generated when the sheet 12 comes into contact with the sheet 12 generates a component force acting in the direction of stretching the sheet 12. As a result, not only when the rotating sheet 12 is wound, but also after the winding, the pinned tension is maintained, and at the same time, there is no lateral displacement on the core body 7 and the sheet is wound and held at a regular position. . Therefore, the same wiping, cleaning and polishing effects as when the brush body 8 is arranged in a V-shape can be obtained.
[0042]
Next, control of the rotating brush 3 of the present invention will be described with reference to FIGS.
[0043]
As shown in FIG. 31, the vacuum cleaner includes a cleaner main body 34 having a built-in electric blower 33 for dust collection (see FIG. 33), a flexible hose 35A connected to the cleaner main body 34, and An extension pipe 35B connected to a flexible hose, a hand switch section 38 shown in FIG. 32, which is disposed on a grip 37 formed on the extension pipe connection side of the flexible hose 36, and a rotating brush 3 And a floor suction tool 1 having a built-in drive motor 40 (see FIG. 33) for rotatingly driving the rotary brush 3 and connected to the extension pipe 35B.
[0044]
As shown in FIG. 32, the hand switch section 38 has operation switches for performing various driving operations, for example, a strong switch 41 for increasing the suction capacity, a weak switch 42 for decreasing the suction capacity, and a switch for stopping the operation of the vacuum cleaner. A switch 43, a floor polishing mode switch 44, and a paper peeling switch 45 are provided.
[0045]
When the strong switch 41 is pressed, the electric blower 33 is rotated at a high speed, and the suction capacity of the vacuum cleaner is increased. When the weak switch 42 is pressed, the electric blower 33 is rotated at a low speed, and the suction ability of the vacuum cleaner is weakened.
[0046]
When the switch 43 is operated, the electric blower 33 is stopped, and the drive motor 40 for driving the rotary brush 3 is also stopped, so that the operation of the vacuum cleaner is completely stopped.
[0047]
The floor polishing mode switch 44 is operated when wiping and cleaning is performed by attaching the sheet 12 that can adsorb dust such as kitchen paper to the rotating brush 3 as described later. The rotating brush 3 is rotated by driving at a rotation speed (low speed) optimum for mounting the seat 12. As a result, the sheet 12 is automatically wound around the rotating brush 3 with its rotation.
[0048]
Even after the seat is mounted, when the floor polishing mode switch 44 is operated, the rotation of the rotary brush 3 is controlled at an optimum rotation speed (low speed) at which the floor polishing (wiping) can be performed well. As a result, the floor can be cleanly wiped off and wiped off, and a situation in which the rotational balance that collapses when the seat is mounted becomes stronger at higher speeds and abnormal noises are likely to occur can be avoided, and the vehicle can be operated quietly.
[0049]
The peeling switch 45 is operated when the sheet 12 is detached from the rotary brush 3, and when operated, the drive motor 40 is reversely driven at an optimal rotation speed (low speed) for automatically peeling the sheet 12; The rotating brush 3 is reversely rotated.
[0050]
The bottom of the floor suction tool 1 detects whether the suction tool 1 is in a cleaning state by touching the floor surface 24 or whether the suction tool 1 is separated from the floor surface 24 and is not in a cleaning state. Is provided with a floor detection switch 46 (see FIG. 33) that turns on and off the switch. In this case, the floor detection switch 46 has a structure operated by a vertically movable wheel 47 normally urged downward by an elastic member such as a spring. And turns on when it moves upward against the spring to rotate the drive motor 40 of the rotating brush 3. When the wheel 47 projects downward by the spring force separated from the floor surface 24, the drive motor 40 is stopped by performing the off operation. As a result, the rotating brush 3 rotates during cleaning with the suction tool 1 attached to the floor surface 24, and stops when the suction tool 1 separates from the floor surface 24 and does not perform cleaning. Automatically controls the operation / stop of the rotating brush 3 in the state of being separated from the floor 24.
[0051]
The operation of these floor suction tools having the above-described structure is controlled by a control circuit shown in FIG. The microcomputer 48 receives operation signals from the respective switches 41 to 46, and in accordance with the input signals, the microcomputer 48 controls the drive motor 40 or the electric blower 33 to drive the brush motor drive circuit 49 and the suction motor drive circuit 50, respectively. Operation control via.
[0052]
FIG. 34 shows a control flow controlled by the control circuit. Next, the control method will be further described with reference to this control flow.
[0053]
Control according to the state of each switch is executed by starting the flow. In the case where the sheet 12 is mounted on the rotating brush 3 and wiping is performed for floor cleaning, the floor polishing mode switch 44 is pressed (process 51). When the floor polishing mode switch 44 is pressed, the rotation of the drive motor 40 is controlled by the microcomputer 48 and the brush motor drive circuit 49 at a rotational speed optimal for mounting the seat 12 (process 52). For this reason, the sheet 12 is wound around the rotating rotary brush 3, and the sheet 12 is automatically mounted. The first control means performs this control.
[0054]
At this time, the electric blower 33 is rotated at an optimum speed by the suction motor driving circuit 50 (process 53). It is desirable that the suction force that does not affect the mounting of the seat is weakened. The second control means performs this control.
[0055]
Thus, the floor surface 24 is cleaned with the suction tool 1 in which the sheet 12 is mounted on the rotating brush 3. At this time, ON / OFF of the floor detection switch 46 is determined (determination 54), and when the floor detection switch in which the suction tool 1 is touching the floor 24 is ON (determination 54y), the processing 52 and 53 are continuously executed. However, the sheet 12 keeps the optimal (low speed) rotation state and can be wiped and cleaned.
[0056]
On the other hand, when the suction tool 1 is temporarily separated from the floor 24 or when the suction tool 1 is kept separated, the floor detection switch 46 is turned off (determination 54n), and the drive motor 40 is stopped (step 55). For this reason, the rotating brush 3 to which the seat 12 is attached stops at any time when it separates from the floor surface 24, so that the operation noise at the time of wiping can be reduced.
[0057]
Next, when removing the dirty sheet 12, the peeling switch 45 is pressed. When the switch 41 is depressed (process 61), the microcomputer 48 and the brush motor drive circuit 49 control the reverse rotation of the drive motor 40 at an optimum rotational speed (low speed) for removing the sheet (process 62). When the rotating brush 3 starts to reversely rotate at a low speed, the free end 12d at the end of the winding of the sheet 12 hits the tip 5d of the cover 5 as shown in FIG. After the contact, with further rotation of the rotary brush 3, the cover tip 5d acts to gradually peel off the sheet 12, and the sheet 12 is completely peeled off and is automatically removed. The third control means performs this control.
[0058]
The switches 38, 39 and the like are operated during normal cleaning in which the rotating brush 3 is rotated without the sheet 12 and the dust brush is driven while scraping dust (steps 71 and 72). The suction force at which the rotation (processing 73) and the low-speed rotation (processing 74) are performed changes strongly. The drive control of the drive motor 40 is performed based on the ON / OFF operation by the floor detection switch 46. At this time, the brush motor drive circuit 49 controls the high speed rotation of the drive motor 40 at the time of cleaning when the suction tool 1 whose floor detection switch 46 is ON (determination 75y) is placed on the floor surface 24 (process 76). Driving while scraping garbage.
[0059]
When the off switch 43 is pressed (process 81), the electric blower 33 and the drive motor 40 are stopped (processes 82 and 83), and the operation of the vacuum cleaner is stopped at all.
[0060]
When the floor polishing mode switch 44 is pressed, the off switch 43 is operated, and the operation of the other operation switches 41, 42, and 45 is not accepted unless the operation of the vacuum cleaner is temporarily stopped once. . As a result, the normal rotating brush 3 rotates at a high speed and does not enter the operation of scraping dust while the seat 12 is mounted. Therefore, even if the operation switches 41 and 42 are operated carelessly, the rotating brush 3 is not rotated. Since the seat 12 is not driven, the mounted seat 12 is not damaged.
[0061]
As described above, when cleaning a tatami mat or a carpet, the floor suction tool 1 is vacuumed without the sheet 12 attached thereto, and the rotary brush 3 scrapes dust and sucks the dust from the suction port for cleaning. On the other hand, when cleaning the floor surface such as flooring, the sheet 12 is wound around the rotating brush 3, and the floor surface is wiped and cleaned by the sheet 12 which rotates integrally with the brush, so that the floor polishing effect is also achieved, so that the cleaning is effectively performed. it can.
[0062]
【The invention's effect】
As described above, according to the present invention, when a sheet capable of adsorbing dust is to be mounted on the rotating brush in the suction tool, the rotating brush is appropriately adjusted to a rotation speed at which the sheet can be easily mounted by operating the floor polishing mode switch. Because it is controlled, it can be mounted automatically without breaking the sheet. In addition, since the number of rotations is controlled to an appropriate value even after the seat is mounted, the cleaner is low in sound luck, and can satisfactorily wipe off dirt and dust on the floor surface and polish the floor.
[0063]
At the same time, the suction force of the electric blower is also appropriately controlled so that the sheet is not strongly pulled in, so that the seat can be easily mounted.
[0064]
When the floor is polished, the rotary brush operates / stops depending on whether it is placed on or off the floor by the floor detection switch provided at the lower part of the suction device. , Noise generation during cleaning is reduced.
[0065]
In addition, there is a peeling switch that is operated when removing the sheet from the rotating brush, by operating this, the rotating brush is reversely rotated at a low speed suitable for unwinding the sheet, it can be automatically removed, Work such as sheet replacement is simple and convenient.
[Brief description of the drawings]
FIG. 1 is a top view of a floor suction tool of a vacuum cleaner according to an embodiment of the present invention.
FIG. 2 is also a side view.
FIG. 3 is also a front view.
FIG. 4 is also a top view.
FIG. 5 is also a rear view.
FIG. 6 is a vertical cross-sectional view of a central portion.
FIG. 7 is a longitudinal sectional view showing the appearance when the sheet is wound.
FIG. 8 is a vertical cross-sectional view of a central portion of a floor suction tool according to another embodiment of the present invention relating to attachment of a seat.
FIG. 9 is a longitudinal sectional view of a central portion of a floor suction tool according to another embodiment of the present invention, relating to removal of a seat.
FIG. 10 is a longitudinal sectional view of a roller used in the embodiment.
FIG. 11 is a top view of a floor suction tool according to another embodiment of the present invention for enabling the user to check the seat mounting state.
FIG. 12 is a top view of a floor suction tool according to another embodiment of the present invention for enabling the user to check the seating state of the seat.
FIG. 13 is a vertical cross-sectional view of the suction tool showing a state when the seat is removed.
FIG. 14 is a longitudinal sectional view showing a state when the seat is attached.
FIG. 15 is a plan view of a sheet having a shape effective for suppressing generation of noise.
FIG. 16 is a plan view of a sheet having a shape according to another embodiment, which is also effective for suppressing generation of noise.
FIG. 17 is a plan view of a sheet having an easily wound structure according to another embodiment of the present invention.
FIG. 18 is a longitudinal sectional view of the floor suction tool showing a state in which the sheet is wrapped in FIG. 17;
FIG. 19 is a plan view of a sheet having an easily wound structure according to another embodiment of the present invention.
FIG. 20 is a plan view of a sheet having an easily wound structure according to another embodiment of the present invention.
FIG. 21 is a vertical cross-sectional view of the floor suction tool showing a state in which the sheet is wound in FIG. 20;
FIG. 22 is a side view showing an arrangement of a conventional rotary brush.
FIG. 23 is a side view for explaining a problem with the rotary brush shown in FIG. 22;
FIG. 24 is a side view of a rotating brush according to an embodiment of the present invention and a front view of one of the brush bodies.
FIG. 25 is a side view of the brush body showing the appearance of the rotary brush of FIG. 24 when winding a sheet.
FIG. 26 is a longitudinal sectional view of the floor suction tool showing the appearance when the sheet is wound.
FIG. 27 is a side view of a rotary brush according to another embodiment of the present invention.
FIG. 28 is a front view of a rotary brush according to another embodiment of the present invention, which has a function of preventing the seat from being biased.
FIG. 29 is a rear view of the floor suction tool according to another embodiment of the present invention, which also exerts a function of biased seating of a sheet.
FIG. 30 is a side view of a floor suction tool according to another embodiment of the present invention.
FIG. 31 is an overall view of a vacuum cleaner according to the present invention.
FIG. 32 is a top view of the hand switch unit.
FIG. 33 is an operation control circuit diagram of the electric vacuum cleaner according to the present invention.
FIG. 34 is an operation control flowchart.
[Explanation of symbols]
1 Floor suction section.
2 Suction tool body case
3 rotating brush
5 Cover
5 Cover tip
6 Suction port
8 brush body
12 sheets
12 Free end
33 electric blower
37 Hand switch
40 Rotary brush drive motor
44 Floor polishing mode switch
45 Peel off switch
46 Floor detection switcher

Claims (4)

Vacuum cleaner body containing a built-in electric blower for dust collection, flexible hose connected to the vacuum cleaner body, extension tube connected to the flexible hose, and extension tube of the flexible hose A hand switch portion provided on a grip portion formed on the connection side; a rotary brush; a floor suction tool having a built-in drive motor for rotating and driving the rotary brush and connected to the extension tube. In a vacuum cleaner,
The dust suction sheet is wound around the rotary brush of the floor suction device so that the dust suction sheet can be mounted. The hand switch unit is provided with a floor polishing mode switch, and the drive motor is controlled according to the operation of the floor polishing mode switch. An electric vacuum cleaner comprising: a first control unit that controls the rotating brush to a rotation speed that is optimal for mounting the dust suction sheet and polishing the floor with the mounted dust suction sheet. 2. The vacuum cleaner according to claim 1, further comprising a second control unit that controls the number of revolutions of the electric blower so as to control the dust collecting force at the time of polishing the floor with the dust absorbing sheet. 2. The vacuum cleaner according to claim 1, wherein the floor suction tool includes a floor detection switch that detects a state of contact with and separation from the floor surface and operates / stops the drive motor. . A peel-off portion for engaging with the rear end of the sheet is provided on the front surface of the main body case of the suction tool, and a peel-off mode switch is provided on the hand switch portion. The vacuum cleaner according to any one of claims 1 to 3, further comprising: third control means for controlling the rotation brush and rotating the rotating brush at a low speed reverse rotation suitable for removing the suction sheet.

Images