JP2009028499A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To usefully expand the range of application of a vacuum cleaner by allowing the vacuum cleaner to perform wipe-off cleaning with a sheet wound around an electric brush built in a suction nozzle in the vacuum cleaner. <P>SOLUTION: The rotary brush 25 is rotated in a prescribed direction at a prescribed rotation speed by a brush motor 44 to wind the sheet 50 around the surface of the rotary brush 25. The rotary brush 25 is repeatedly rotated forward/backward to remove the sheet 50 wound around the rotary brush 25. The sheet is automatically removed by increasing the suction force of an electric blower and using the force. In this way, the sheet 50 wound around the surface of the rotary brush 25 can be removed without a user touching the sheet, and the highly convenient vacuum cleaner can be provided. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner, and relates to a vacuum cleaner in which a suction tool in which a rotating brush rotated by a motor is incorporated is used as a suction tool for sucking dust from a surface to be cleaned.

  An electric vacuum cleaner generally includes an electric vacuum cleaner main body that generates a suction force, and a suction tool that is attached to the electric vacuum cleaner main body via a hose or a pipe. The suction tool has a suction port opposed to the surface to be cleaned, and a suction brush with a built-in rotary brush is known.

  The rotating brush of the suction tool is likely to get entangled with hair, lint, etc. in accordance with the cleaning operation. For example, Patent Document 1 discloses a proposal for easily removing hair, lint, and the like entangled with a rotating brush.

  The proposal described in Patent Document 1 is to put a removal bag on the outer periphery of the rotary brush in advance, and the wound fibrous dust can be easily removed by peeling the removal bag (Patent Document). 1 [Means for Solving Problems] and [Actions]).

  Further, Patent Document 2 proposes that a rotating brush built in a suction tool is driven by a motor to detect whether the moving direction of the suction tool is forward or backward, and the rotational direction of the rotating brush is switched.

  In addition, in order to improve the cleaning performance of the vacuum cleaner, the applicant of the present application has previously proposed a vacuum cleaner that uses a commercially available wet sheet to perform wiping cleaning using the wet sheet (patent). Reference 3).

Furthermore, in order to improve the cleaning performance of the vacuum cleaner, the applicant of the present application has previously proposed a vacuum cleaner that uses a sheet of commercially available kitchen paper or the like to perform wiping cleaning using the sheet. (Patent Document 4).
Japanese Patent Laid-Open No. 62-133904 JP-A-5-192277 JP 2005-304954 A JP 2004-2222739 A

  When the proposal described in Patent Document 1 is adopted in order to remove hair or thread wound around the rotating brush of the suction tool, the user must manually remove the removal bag at regular intervals. It takes time and effort.

  By the way, when the rotating brush is rotated by a motor, the rotation direction can be switched between one direction and the other direction. However, Patent Document 2 discloses that the hair attached to the rotating brush can be changed by switching the rotation of the rotating brush. There is no suggestion that lint or the like can be removed.

  In the configuration described in Patent Document 3, wiping using a wet sheet is possible. However, the configuration described in Patent Document 3 includes a dedicated roller for winding the wet sheet, and the size of the suction tool is small. There is a problem of becoming larger.

  Further, in the configuration described in Patent Document 4, wiping and cleaning using a sheet is possible. However, after the wiping and cleaning is completed, the dirty sheet must be removed with fingers, and there is a problem in that the user feels uncomfortable. .

  The present invention has been made against the background of such a conventional technique. The main purpose of the present invention is to automatically unwind and remove the entangled garbage even if the rotating brush is entangled with garbage such as hair or lint. It is to provide a vacuum cleaner that can.

  Another object of the present invention is to provide a vacuum cleaner capable of wiping with a sheet.

  A further object of the present invention is to provide a vacuum cleaner that can automatically wind a sheet around a rotating brush and remove the sheet automatically after wiping and cleaning.

  Furthermore, the objective of this invention is providing the vacuum cleaner which can wind a sheet | seat without inconvenience, when winding a sheet | seat around a rotating brush.

  In order to solve the above-described problems, the present invention has the following configuration.

  The invention according to claim 1 is a housing having a suction port opposed to the surface to be cleaned, a rotary brush provided in the housing and having a part of the peripheral surface facing the suction port, and built in the housing. A motor for rotating the rotating brush; and a suction tool including a cylindrical bend projecting on the housing and guiding air and dust sucked into the housing from the suction port; and the suction In order to remove the main body of the vacuum cleaner connected to the bend of the tool and generating suction by the electric blower, and the sheet wound around the peripheral surface of the rotating brush, the operation of rotating the rotating brush forward and reverse by the motor is repeated. And an unloading control means.

  The invention according to claim 2 is the electric vacuum cleaner according to claim 1, wherein the removal control means strengthens the electric blower.

  The invention according to claim 3 is the electric vacuum cleaner according to claim 1, wherein the removal control means activates the rotating brush after a predetermined time has elapsed since the activation of the electric blower.

  According to invention of Claim 1, the sheet | seat wound around the rotating brush can be removed automatically, and the vacuum cleaner excellent in operativity can be provided.

  According to the invention described in claim 2, by increasing the suction force of the electric blower, the sheet can be automatically removed using the suction force of the electric blower, and an electric vacuum cleaner having excellent operability can be obtained. Can be provided.

  According to the invention described in claim 3, since the rotating brush is activated after a predetermined time has elapsed since the activation of the electric blower, the rotating brush is rotated in a state where the electric blower generates a sufficient suction force, and the sheet is It can be automatically removed from the rotating brush more reliably.

  Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a right side view of a vacuum cleaner 1 according to an embodiment of the present invention.

  Hereinafter, for convenience of description, in FIG. 1, the left side is the front, the right side is the rear, the front side is the left, the back side is the right, the upper side is the upper side, and the lower side is the lower side. Also, according to the direction, description will be made while distinguishing front and rear, left and right, and top and bottom.

  The vacuum cleaner 1 includes a vacuum cleaner body 2, a suction hose 3, an operation unit 4, a suction pipe 5, and a suction tool 10.

  The electric vacuum cleaner main body 2 includes an electric blower (see 42 in FIG. 3), and the electric blower 42 generates a suction force. A connecting portion 6 provided on one end side (rear end side) of the suction hose 3 is detachably connected to the front side of the electric vacuum cleaner body 2. The suction hose 3 has flexibility and can be bent into an arbitrary shape. An operation unit 4 is attached to the other end side (tip side) of the suction hose 3. The operation portion 4 is opposite to the grip 8 with respect to the pipe portion 7 extending in the axial direction of the suction hose 3, the grip 8 extending rearward from the pipe portion 7 in the direction crossing the axial direction, and the central axis of the pipe portion 7. And a sub-grip 9 provided on the side (side separated by 180 °). And the rotation mechanism 11 is interposed between the front end side of the suction hose 3 and the operation part 4, and the operation part 4 and the suction hose 3 are connected so that rotation around the axis is mutually possible. An operation panel 30 is provided on the front side of the grip 8, and a plurality of operation keys to be described later are arranged on the operation panel 30.

  The suction pipe 5 is a longitudinal, for example, resin pipe that connects between the operation unit 4 and the suction tool 10. The suction pipe 5 has a front end side (side to which the suction tool 10 is attached) 12 coaxially within a rear end side (side to which the operation unit 4 is connected) 13 with a substantially central portion in the length direction as a boundary. It is housed and configured to be variable in length. The length can be varied by operating the lock button 14 provided at the center of the suction pipe 5.

  The suction tool 10 includes a housing 20 and a bend 21 that is a connecting cylinder. The bend 21 is attached to the housing 20 so as to be rotatable at least in the vertical direction.

  The rear end side 13 of the suction pipe 5 can be removed from the operation unit 4, and the operation unit 4 can be directly connected to the bend 21 of the suction tool 10.

  In addition, in FIG. 1, 100 has shown the floor surface as a to-be-cleaned surface.

  FIG. 2 is a plan view for explaining the configuration of the operation panel 30. As described above, the operation panel 30 is disposed on the front side of the grip 8. The operation panel 30 has the following five keys arranged.

  The “OFF” key 31 is a key that is operated (pressed) when the operation of the vacuum cleaner 1 (all the operation operations of the vacuum cleaner 1) is finished, and shuts off the power supply to the vacuum cleaner 1. This is a key for inputting signals.

  The “strong / medium / weak” key 32 is a key for inputting an operation start signal to the vacuum cleaner 1 and inputting an operation mode (strength of suction force of the electric blower 42).

  The “brush off / on” key 33 is used to stop / rotate the rotating brush 25 (see FIG. 4) built in the housing 20 of the suction tool 10 when the vacuum cleaner 1 is operating (the electric blower 42 is operating). This is a key for inputting a signal for switching between.

  The “ON” key 34 and the “REMOVE” key 35 are pressed when the wet sheet is wound around the peripheral surface of the rotary brush 25 built in the housing 20 of the suction tool 10 to enter the wiping cleaning mode. This key is pressed when removing.

  FIG. 3 is a block diagram showing an electrical configuration of the vacuum cleaner 1.

  Five keys arranged on the operation panel 30, that is, “OFF” key 31, “strong / medium / weak” key 32, “brush OFF / ON” key 33, “ON” key 34, and “REMOVE” key 35 These signals are respectively supplied to the control unit 40. The control unit 40 is configured by an electronic circuit such as a CPU, a ROM, and a RAM, and functions as a control center of the vacuum cleaner 1. The control unit 40 controls driving of the electric blower 42 via the driver 41. Further, the driving of the brush motor 44 is controlled via the driver 43. The brush motor 44 is a motor for rotating the rotary brush 25 provided in the housing 20 of the suction tool 10.

  A signal from the paper pack sensor 45 is given to the control unit 40. The vacuum cleaner main body 2 can alternatively set a paper pack or a resin container for centrifuging and storing dust as a dust collection container. Whether a paper pack is set or a resin container is set is determined based on a signal from the sensor 45. As will be described later, the control unit 40 performs control so that wet sheets cannot be used when a paper pack is set.

  The vacuum cleaner 1 further includes a power supply circuit 46, and power supplied from the commercial power supply is supplied to the drivers 41 and 43 via the power supply circuit 46.

  4 (A) and 4 (B) show a right side longitudinal sectional view of the suction tool 10. The suction tool 10 includes a housing 20 and a bend 21. A shutter 22 that can be opened and closed is provided in front of the housing 20. A housing chamber 23 is defined by the housing 20 and the shutter 22. The storage chamber 23 has a suction port 24 that faces the surface to be cleaned 100 in a cleanable state in which the suction tool 10 is disposed on the surface 100 to be cleaned. A rotating brush 25 is accommodated in the accommodation chamber 23 so as to face the suction port 24.

  As shown in FIG. 4A, the rotating brush 25 rotates counterclockwise (forward rotation), and can sweep up dust on the surface to be cleaned 100 into the storage chamber 23. A communication port 26 is formed at the rear of the storage chamber 23, and dust and air sucked up by the rotating brush 25 passes through the communication port 26 and passes through the flow path 21 a in the bend 21 for electric cleaning. It is sucked into the machine body 2 (see FIG. 1).

  The rotating brush 25 has a rotating shaft 27 extending in the width direction of the housing chamber 23, that is, in the left-right direction of the housing 20 (perpendicular to the paper surface), and a brush 28 planted on the peripheral surface of the rotating shaft 27. (28a, 28b) and a wing cloth 29 as an anti-entanglement blade planted on the peripheral surface of the rotary shaft 27.

  The brush 28 is provided with two types, a first brush 28a having a relatively wide protrusion tip (a circumferential dimension of the rotating shaft 27) and a second brush 28b having a relatively narrow width, and a rotating shaft. It is planted so as to make a pair at symmetrical positions separated by 180 ° with respect to the 27 rotation centers.

  The wing cloth 29 is also planted so as to form a pair at a position 180 degrees apart from the rotation center of the rotation shaft 27. The wing cloth 29 is made of a flexible material, for example, a raised cloth with one side raised. The wing cloth 29 has a protruding dimension from the circumferential surface of the rotating shaft 27 larger than the protruding dimension of the brush 28.

  When the rotating brush 25 rotates forward, the wing cloth 29 and the brush 28 bend backward in the rotation direction as shown in FIG. The brush motor 44 is controlled by the controller 40, and the rotating brush 25 can be rotated to the right (reversely rotated) as shown in FIG. While the rotating brush 25 is rotating in the reverse direction, as shown in FIG. 4B, the wing cloth 29 and the brush 28 bend in the direction opposite to that during the normal rotation.

  FIG. 5 (A) shows how the wing cross 29 spreads when the rotating brush 25 rotates forward (spreading due to centrifugal force), and FIG. 5B shows that the rotating brush 25 rotates forward and backward (forward / reverse). This shows how the wing cross 29 spreads when the reverse rotation is alternately switched).

  As is clear from the comparison between FIGS. 5A and 5B, the wing cloth 29 spreads in the radial direction from the rotating shaft 27 and rotates when the rotating brush 25 alternately switches between forward rotation and reverse rotation. It can be seen that long dust such as hair and lint clinging to the peripheral surface of the shaft 27 can float from the rotating shaft 27 and function so that the long dust does not get entangled with the rotating shaft 27.

  6 (A) and 6 (B) are right side longitudinal sectional views of the suction tool 10, in which hairs and threads are entangled around the rotating brush 25 (A) and entangled around the rotating brush 25. The state (B) in which the hair and thread are unwinded and removed is shown schematically.

  As shown in FIG. 6A, while the rotary brush 25 rotates forward and normal cleaning is performed, hair, thread, and the like are entangled with the rotary brush 25.

  Therefore, the rotating brush 25 can be alternately rotated forward / reversely at a predetermined timing, for example, at the start of cleaning, that is, when the rotating brush 25 starts rotating, or based on, for example, a timing when a specific switch is operated. For example, as shown in FIG. 6B, the yarn entangled with the rotating brush 25 is unwound and removed, and the removed yarn is sucked into the vacuum cleaner body 2 through the communication port 26 and the flow path 21a. .

  In the vacuum cleaner 1 according to this embodiment, control for automatically rotating / reversely rotating the rotating brush 25 at a predetermined timing is performed for a certain period of time so that hair, yarn, or the like does not get tangled with the rotating brush 25. . Such control is executed by the control unit 40 described with reference to FIG.

  FIG. 7 is a flowchart showing an example of a control operation executed by the control unit 40 shown in FIG. 3. As described with reference to FIG. 6, the control for unwinding and removing the hair or yarn entangled with the rotating brush 25. Represents the content.

  With reference to FIG. 3 and FIG.

  The control unit 40 determines whether or not a start signal is given (step S1). In this embodiment, when the “strong / medium / weak” key 32 is pressed, a start signal is given to the control unit 40, and the electric blower 42 according to the number of times the “strong / medium / weak” key 32 is pressed. A signal indicating that strong driving → middle driving → weak driving → strong driving is cyclically switched to the control unit 40.

  When determining the input of the start signal, the control unit 40 turns on, for example, a drive flag provided in the RAM (step S2), starts a timer (step S3), and causes the electric blower 42 to operate strongly (step S4). That is, in this embodiment, when the “strong / medium / weak” key 32 is pressed, the electric blower is first strongly operated regardless of the number of times of pressing.

  The brush motor 44 is driven to rotate forward for T1 seconds (step S5), stopped for T2 seconds (step S6), reversely rotated for T3 seconds (step S7), and stopped for T4 seconds (step S8). This is performed until the time T0 is measured (step S9).

  Here, T1 = 0.2 seconds, T2 = 0.2 seconds, T3 = 0.5 seconds, and T4 = 0.2 seconds can be exemplified. With this control, when the electric vacuum cleaner 1 starts to drive, the rotating brush 25 is alternately switched between normal rotation and reverse rotation for T0 seconds, and even if hair or yarn is entangled with the rotating brush 25 as described with reference to FIG. , The tangled hair and yarn are unwound. In addition, since the electric blower 42 is operated strongly in conjunction with the forward / reverse rotation of the rotary brush 25, a strong suction force works, and the hair and yarn unraveled from the rotary brush 25 are surely attached to the main body of the vacuum cleaner. It is sucked into 2. That is, the rotating brush 25 repeats forward / reverse rotation, and a strong suction force is generated in conjunction with the operation of unwinding the hair and yarn, so that the hair and yarn can be separated from the rotating brush 25.

  In this embodiment, the timer is started in step S3, and it is determined in step S9 whether the timer has timed T0 seconds. However, instead of the timer, how many times the processing in steps S5 to S8 has been performed. The process may proceed to step S10 when the operations of steps S5 to S8 are performed a predetermined number of times (for example, 5 times).

  In this embodiment, in order to improve the durability of the brush motor 44 that drives the rotating brush 25, stop times T2 and T4 are introduced when the rotating brush 25 is switched between forward rotation and reverse rotation. If the brush motor 44 can guarantee the desired use period even if the rotation direction is changed without changing the stop period, the stop time may not be provided. T1, T2, T3, and T4 can be arbitrarily set.

  In step S10, the timer is cleared and stopped, the electric blower 42 is turned off, and the brush motor 44 is also turned off. That is, the driving of the vacuum cleaner 1 is temporarily stopped. Then, the control unit 40 determines whether or not the drive flag is on. In this control operation, since the drive flag is turned on in step S2, the control proceeds to step S12, and normal drive control is performed. In other words, the electric blower 42 is driven so as to obtain a suction force according to the input signal based on the number of times the “strong / medium / weak” key 32 is pressed together with the start signal.

  Further, in normal drive control, each time the “brush off / on” key 33 on the operation panel 30 is pressed, the rotary brush 25 is switched between normal rotation and stop. Cleaning by the electric vacuum cleaner 1 is executed by such normal drive control.

  When the cleaning is finished, the user presses the “OFF” key 31 on the operation panel 30. When it is determined that the cut signal is input (YES in step S13), the control unit 40 turns off the drive flag and stops the electric blower 42 and the brush motor 44.

  According to the above control, when the operation of the vacuum cleaner 1 is started, the rotary brush 25 is alternately switched between forward rotation / reverse rotation, the electric blower 42 is strongly operated, and hairs and threads entangled with the rotary brush 25, etc. Therefore, the subsequent cleaning can be performed satisfactorily in a state where no hair or yarn is wound around the rotary brush 25.

  When the vacuum cleaner 1 is given a start signal, instead of performing control to rotate the rotating brush 25 forward / reversely, for example, a specific key (other than the five keys provided on the operation panel 30 in FIG. 2). The control unit 40 determines when the key is pressed (step S15), and the control process of steps S3 to S10 is performed according to the signal input of the specific key. Good.

  At other timings, for example, every time the “strong / medium / weak” key 32 is pressed and the suction force of the electric blower 42 is switched, or the “brush cutting / on” key 33 is pressed, the rotating brush 25 is moved. When the rotation is started or when the rotation is stopped, the rotating brush 25 may be rotated forward and backward to loosen and remove hair or thread entangled with the rotating brush 25.

  Next, with reference to FIGS. 8-14, the structure and control operation | movement for winding a wet sheet around the surrounding surface of the rotating brush 25 of the suction tool 10 and performing wiping cleaning using the vacuum cleaner 1 mentioned above are demonstrated. do.

  The “wet sheet” is a cleaning sheet that is currently used mainly for cleaning flooring and the like of private houses, and is generally a cleaning sheet in which a nonwoven fabric is impregnated with moisture and alcohol. For example, “Quickle Wiper” (registered trademark) is well known. The wet sheet is attached to a dedicated instrument (having a rectangular mounting plate at the end of a stick) and used to wipe floor surfaces such as flooring.

  The applicant of the present application has already proposed such a configuration, considering that such a wet sheet can be attached to a vacuum cleaner, and that the vacuum cleaner can also perform wiping cleaning with a wet sheet (Patent Document 3). reference).

  This embodiment is different from the previous proposal, and proposes a configuration and a control method capable of performing wiping cleaning using a wet sheet by winding the wet sheet around the rotating brush 25 provided in the suction tool 10 of the vacuum cleaner. is there.

  FIG. 8A to FIG. 8D are diagrams illustrating a procedure for attaching the wet sheet 50 to the suction tool 10 and performing wiping cleaning.

  As shown in FIG. 8A, the wet sheet 50 is spread and placed on the floor surface 100, and the suction tool 10 is placed on the wet sheet 50 so that the rotating brush 25 faces a position near the tip of the wet sheet 50. In this state, the operation panel 30 (see FIG. 2) “Apply” key 34 is pressed.

  In response to this operation, the rotating brush 25 and the electric blower 42 are driven in a predetermined manner, and the wet sheet 50 is wound around the peripheral surface of the rotating brush 25 as shown in FIG. 8B. More specifically, the rotary brush 25 is rotated forward at a predetermined rotation speed in response to pressing of the “apply” key 34. As a result, the wet sheet 50 is wound around the peripheral surface of the rotating brush 25 rotating from the leading end side, and is wound around the rotating brush 25 as shown in FIG. 8B.

  Since the wet sheet 50 is impregnated with moisture and alcohol, a centrifugal force acts on the wet sheet 50 when wound around the rotary brush 25, and a part of the impregnated moisture and alcohol is wet sheet. Fly from 50. For this reason, it is desirable that the electric blower 42 is operated so that moisture and alcohol that scatter are not scattered on the floor surface 100 and are sucked into the bend 21 from the communication port 26. At that time, the suction force of the electric blower 42 is strong, and it is not preferable that moisture and alcohol scattered from the wet sheet 50 reach the inside of the electric vacuum cleaner body 2.

  Therefore, the electric blower 42 generates a very weak suction force, and the scattered water and alcohol enter from the communication port 26 of the suction tool 10 to a position closer to the front of the bend 21, and a small hole 51 formed on the lower side of the bend 21. It is desirable that the liquid drops from the water and be captured by the moisture absorbing member 52 disposed there.

  As shown in FIG. 8C, after the wet sheet 50 is wound around the rotating brush 25, the rotating brush 25 is rotated forward at a predetermined rotation speed, and a predetermined suction force is generated by the electric blower. The floor surface 100 can be wiped and cleaned by the wet sheet 50. During the wiping and cleaning period, moisture and alcohol do not scatter from the wet sheet 50. Moisture and alcohol are scattered from the wet sheet 50 only when the wet sheet 50 is wound around the rotating brush 25.

  When the wiping and cleaning are completed, the “Remove” key 35 on the operation panel 30 is pressed. In response to this, the control unit 40 drives and controls the rotating brush 25 so as to alternate forward / reverse rotation, and drives the electric blower 42 so as to increase the suction force.

  It has been described that when the rotating brush 25 is entangled with hair or lint around the rotary brush 25, the tangled hair or yarn is unwound when it is rotated forward / reversely. Similarly, as shown in FIG. 8D, when the rotating brush 25 is rotated forward / reversely and the suction force is increased, the wound wet sheet is automatically separated from the rotating brush 25 to perform electric cleaning. It is sucked into the machine body 2.

  FIG. 9 schematically shows how the wet sheet 50 wound around the rotating brush 25 comes off when the rotating brush 25 rotates forward / reversely.

  9A shows the wet sheet 50 in which the rotating brush 25 is rotating forward, and FIGS. 9B and 9C show the rotating brush 25 by rotating the rotating brush 25 alternately forward / reversely. The state of the wet sheet 50 coming off from the peripheral surface is shown.

  FIG. 10 is a flowchart showing the control contents of the wiping cleaning mode executed by control unit 40 shown in FIG. The control content of the wiping and cleaning mode will be described according to the flow of FIG. 10 while referring to the block diagram shown in FIG. 3 and FIGS. 8A to 9 as necessary.

  The control unit 40 presses the “attach” key 34 provided on the operation panel 30, and determines whether or not there is a signal input from the “attach” key (step S21).

  When it is determined that there is a signal input of the “ON” key 34, reception of inputs from the “strong / medium / weak” key 32 and the “brush off / on” key 33 is prohibited (step S22), and the electric blower 42 is turned on. A weak operation is performed (step S23), and it is determined whether or not the paper pack sensor 45 is on (step S24).

  The paper pack sensor 45 is a sensor that is turned off when a paper pack is set in the vacuum cleaner main body 2. If the sensor 45 is turned on, it is determined that a resin container, not a paper pack, is set as a dust collecting function. The wiping and cleaning mode proceeds.

  If the sensor 45 is not on, it is determined that a paper pack is set in the electric vacuum cleaner main body 2, and the wiping cleaning mode cannot be performed.

  This will be described in detail later.

  Next, the brush motor 44 is rotated forward at the rotation speed N1 (step S25).

  The rotation speed N1 of the brush motor 44 at this time is a rotation speed suitable for wiping and cleaning while rotating the rotating brush 25, winding the wet sheet 50 around the peripheral surface, and rotating the wound wet sheet. Specifically, the rotational speed N1 of the brush motor 44 is controlled so that the rotary brush 25 is rotated at a slow rotational speed that is slightly lower than the normal rotational speed. Therefore, the wet sheet 50 is wound around the rotating brush 25, the rotating brush 25 around which the wet sheet 50 is wound is rotated, and wiping cleaning such as flooring is performed. At that time, the electric blower 42 generates a weak suction force, and dust existing on the surface 100 (flooring or the like) to be cleaned is wiped off with the wet sheet 50 and also sucked into the vacuum cleaner main body 2. Being captured.

  When wiping and cleaning are completed and the “Remove” key 35 is pressed, the control unit 40 determines that there is a signal to remove (YES in Step S26), sets the counter to “1” (Step S27), and sets the electric blower 42. The suction force is increased (step S28), the brush motor 44 is rotated forward for T1 seconds (step S29), then the brush motor 44 is stopped for T2 seconds (step S30), and the brush motor 44 is rotated reversely for T3 seconds (step S31). The brush motor 44 is stopped for T4 seconds (step S32), and the brush motor 44 is rotated forward and backward to determine whether the counter is a predetermined value (step S33). At this time, since the counter is “1”, the process returns to step S27, the counter is incremented by “1” (step S27), and forward rotation and reverse rotation processing of the brush motor 44 is performed.

  Then, the forward rotation and the reverse rotation of the brush motor 44 are alternately repeated until the counter reaches a preset value, for example, “5”.

  By repeating the forward and reverse rotations of the brush motor 44, the rotating brush 25 is rotated forward and backward, and the wet sheet 50 wound around the rotating brush 25 is loosened and removed, and by the strong suction force by the electric blower 42, The wet sheet 50 detached from the rotary brush 25 is sucked into the main body 2 of the vacuum cleaner.

  In step S33, when the counter reaches a preset value, the brush motor 44 and the electric blower 42 are turned off (step S34), and the wiping cleaning mode ends.

  The vacuum cleaner main body 2 shown in FIG. 1 can set a paper pack as a dust collecting function, and can also set a so-called cyclone unit that is a resin container for centrifuging and storing dust. Which is set can be detected by the built-in sensor 15. In the above-described embodiment, when the paper pack is set, the wiping cleaning mode using the wet sheet 50 is rejected. The wet sheet 50 is not sucked into the paper pack. Therefore, the tear of the paper pack due to the moisture of the wet sheet 50 can be prevented.

  Next, with reference to a vacuum cleaner body of a different type from the vacuum cleaner body 2 shown in FIG. 1, which of the case where a paper pack is set in the vacuum cleaner body and the case where a cyclone unit is set How to determine with a sensor will be specifically described.

  11 is a cross-sectional view of the electric vacuum cleaner main body 60 with the paper pack 61 set therein, and FIG. 12 is a cross-sectional view of the electric vacuum cleaner main body 60 with the cyclone unit 62 set therein.

  With reference to FIG. 11 and FIG. 12, an electric blower 63 is built in the vacuum cleaner body 60. A dust collection space 64 is formed on the front side of the electric blower 63. The dust collection space 64 is an airtight space, and air that has entered from the inlet 65 to which the suction hose 3 is attached is sucked by the electric blower 63 without leaking outside the dust collection space 64, and the electric blower 63 from the outlet 66. It flows to. For this reason, for example, a seal packing 67 is provided around the inlet 65.

  As shown in FIG. 11, when the paper pack 61 is set, the base 61 a of the paper pack 61 is pressed against the seal packing 67 and the periphery of the inlet 65 is sealed. When the electric blower 63 is driven, the entire inside of the dust collection space 64 (region colored in gray) becomes negative pressure. A sensor 45 is arranged in this region.

  On the other hand, as shown in FIG. 12, when the cyclone unit 62 is set, the inlet 68 of the cyclone unit 62 is pressed against the seal packing 67 and the inlet 65 is sealed. The internal space of the cyclone unit 62 is hermetically configured. Therefore, when the electric blower 63 is operated, the internal space (region shown in gray) of the cyclone unit 62 becomes negative pressure by the suction force, but the entire dust collection space 64 does not become negative pressure.

  Therefore, as shown in FIG. 13, the sensor 45 is in a different state when the paper pack 61 is set (A) and when the cyclone unit 62 is set (B).

  Referring to FIG. 13, an attachment hole 642 for sensor 45 is formed in wall surface 641 constituting dust collection space 64. A holder 71 is mounted in the mounting hole 642 via a seal packing 643. The holder 71 includes, for example, a cylindrical slide chamber 72, and a piston 73 is slidably provided in the slide chamber 72. The piston 73 is urged by a coil spring 74 so as to slide leftward in the figure.

  In the state where the piston 73 slides to the left as shown in (B), the working rod 75 of the piston 73 protrudes from the holder 71 to the left, and the actuator 77 of the micro switch 76 is displaced, so that the micro switch 76 is turned on, for example. State.

  By the way, in the state where the paper pack is set, as shown in (A), the entire inside of the dust collection space 64 becomes negative pressure. For this reason, the space (the space on the right side of the piston 73) communicating with the dust collection space 64 in the slide chamber 72 has a negative pressure, and the piston 73 is slid to the right against the elasticity of the coil spring 74 by this negative pressure. (A). Therefore, the working rod 75 moves away from the actuator 77, and the microswitch 76 is switched to an off state, for example.

  On the other hand, in the state (B) in which the cyclone unit is set, the entire dust collection space 64 does not become negative pressure, but only the space in the cyclone unit 62 becomes negative pressure as described above. Does not slide in the direction.

  Based on the above principle, it is possible to detect whether or not the paper pack is set by determining whether the micro switch 76 is on or off.

  Note that the configuration of the sensor 45 that detects whether or not a paper pack is set is not limited to that shown in FIG. 13, and other configurations may be employed.

  By the way, when the wet sheet 50 is wound, the “attach” key 34, which is a dedicated key, may be pressed. However, the user erroneously presses the “strong / medium / weak” key 32 to try to attach the wet sheet 50, for example. If you want to. Therefore, a modified example having a so-called anti-poker mechanism that prevents the wet sheet 50 from being wound even if such an operation is performed will be described below.

  FIG. 14 is a right-side vertical cross-sectional view of the suction tool 10 to which a pocket prevention mechanism is added. In the suction tool 10 shown in FIG. 14, a catching rib 55 is provided in the accommodation chamber 23 formed in the housing 20 in association with the entrance of the communication port 26. This catching rib 55 is a baffle member for preventing the pocket. In this embodiment, the suction tool 10 is rotated clockwise (reversely rotated) in the drawing when the wet sheet 50 is wound. When the rotating brush 25 rotates in the reverse direction, the wet sheet 50 is satisfactorily wound around it (FIG. 14B).

  On the other hand, when the rotary brush 25 rotates forward, the wet sheet 50 cannot be wound. This is because, as shown in FIG. 14A, when the wet sheet 50 is wound around the rotating brush 25 that rotates in the forward direction, the wet sheet 50 guided by the rotating brush 25 hits the lower end of the rib 55, and the wet sheet 50 Is guided not in the circumferential surface of the rotating brush 25 but in the direction of the communication port 26.

  In the electric vacuum cleaner 1, when the rotary brush 33 is rotated by the “brush cut / on” key 33, the rotary brush 25 is rotated forward. Therefore, even if the user accidentally presses the “brush cut / enter” key 33 and tries to wind the wet sheet 50, the wet sheet 50 is collected into the dust collecting chamber without being wound around the rotating brush 25.

  FIG. 15 shows another example of the baffle member for preventing poka. In the configuration of FIG. 5, a diagonally raised cloth 56 is provided in the storage chamber 23 so as to face the peripheral surface of the rotating brush 25. The oblique raised cloth 56 is planted in a row so that reverse hairs are raised by the rotating brush 25 that rotates forward. Therefore, even if it is going to wind the wet sheet 50 around the rotating brush 25 rotated forward, winding is prevented (FIG. 15 (A)).

  On the other hand, when the rotating brush 25 rotates in the reverse direction, the winding of the wet sheet 50 to be wound around the rotating brush 25 is not prevented, and the wet sheet 50 is smoothly wound around the peripheral surface of the rotating brush 25 ( FIG. 15 (B)).

  Thus, also by using the diagonally raised cloth 56, the wrapping of the wet sheet 50 around the rotating brush 25 rotating in the forward direction can be prevented.

  FIG. 16 is a diagram showing still another example of the baffle member for preventing poka. The poka protection mechanism shown in FIG. 16 is formed by forming an air intake 57 on the shutter 22 constituting the suction tool 10.

  In a state where the electric blower is operating and suction force is generated, air is sucked from the suction port 24 and air is also sucked auxiliary from the air intake 57. The air sucked from the air intake 57 flows on the upper surface side of the rotating brush 25 from the left to the right in the drawing.

  Even if the wet sheet 50 is to be wound while the rotary brush 25 is rotating forward, the wet sheet 50 is inhibited from being wound around the rotary brush 25 by the suction air flowing from the air intake 57 (FIG. 16A). )).

  On the other hand, when the rotary brush 25 is rotating in the reverse direction, the winding direction around the circumferential surface of the rotary brush 25 and the direction of the suction air sucked from the air intake 57 are the same direction, and the wet sheet 50 is rotated around the circumference of the rotary brush 25. It is wound well on the surface (FIG. 16B).

  14 to 16 described above, the wet sheet 50 is wound around the circumferential surface of the rotating brush 25 at the time of reverse rotation opposite to the normal rotation that is the rotation direction of the rotating brush 25 during normal cleaning, and A suction tool equipped with a so-called anti-poker mechanism is provided by providing a baffle member (for example, a catching rib 55, an oblique brushed cloth 56 or an air intake 57) that prevents the wet sheet from being wound when the rotary brush 25 rotates forward. 10 can be realized.

  In the embodiment described above, the rotary brush 25 of the suction tool 10 includes the wing cloth 29, so that the hair, thread, wet sheet 50, etc. wound around the rotary brush 25 can be easily removed by the action of the wing cloth 29. As described above, even when the rotating brush 25 is not provided with the wing cloth 29, it is possible to automatically remove hairs, threads, wet sheets and the like wound around the rotating brush 25. This is because the rotating brush 25 is switched alternately between forward rotation and reverse rotation in a predetermined manner, and at that time, the suction force by the electric blower is increased, so that the hair, yarn, wet sheet, etc. wound around the rotating brush gradually This is because loose hair, loose hair, thread, wet sheet, and the like are sucked with a strong suction force, and thus come off the rotating brush.

  Hereinafter, another embodiment of the present invention will be described with reference to the drawings.

  In addition, about the same structure as embodiment mentioned above, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  FIG. 17 is a plan view for explaining the configuration of operation panel 200. Similar to the above-described embodiment, the operation panel 200 is disposed on the front side of the grip 8. The operation panel 200 has the following five keys arranged.

  The “OFF” key 201 is a key that is operated (pressed) when the operation of the vacuum cleaner 1 (all the operation operations of the vacuum cleaner 1) is finished, and the power supply to the vacuum cleaner 1 is shut off. This is a key for inputting signals.

  The “strong / medium / weak” key 202 is a key for inputting an operation start signal to the vacuum cleaner 1 and inputting an operation mode (strength of suction force of the electric blower 42).

  The “brush off / on” key 203 is used to stop / rotate the rotating brush 25 (see FIG. 4) built in the housing 20 of the suction tool 10 when the vacuum cleaner 1 is operating (the electric blower 42 is operating). This is a key for inputting a signal for switching between.

  The “on / off” key 204 and the “remove” key 205 are pressed when the sheet is wound around the peripheral surface of the rotating brush 25 built in the housing 20 of the suction tool 10 to enter the wiping cleaning mode. This key is pressed when removing.

  FIG. 18 is a block diagram showing an electrical configuration of the vacuum cleaner 1.

  Five keys arranged on the operation panel 200, that is, "OFF" key 201, "strong / medium / weak" key 202, "brush OFF / ON" key 203, "ON / OFF" key 204, and "release" The signal of the key 205 is given to the control unit 40, respectively. The control unit 40 is configured by an electronic circuit such as a CPU, a ROM, and a RAM, and functions as a control center of the vacuum cleaner 1. The control unit 40 controls driving of the electric blower 42 via the driver 41. Further, the driving of the brush motor 44 is controlled via the driver 43. The brush motor 44 is a motor for rotating the rotary brush 25 provided in the housing 20 of the suction tool 10.

  A signal from the paper pack sensor 45 is given to the control unit 40. The vacuum cleaner main body 2 can alternatively set a paper pack or a resin container for centrifuging and storing dust as a dust collection container. Whether a paper pack is set or a resin container is set is determined based on a signal from the sensor 45. As will be described later, the control unit 40 performs control so that the sheet cannot be used when a paper pack is set.

  The vacuum cleaner 1 further includes a power supply circuit 46, and power supplied from the commercial power supply is supplied to the drivers 41 and 43 via the power supply circuit 46.

  In the vacuum cleaner 1 according to this embodiment as well, as with the vacuum cleaner according to the above-described embodiment, the rotating brush 25 is automatically rotated at a predetermined timing so that the rotating brush 25 does not get entangled with hair or yarn. Control to rotate 25 in the forward / reverse direction is performed for a predetermined time. Such control is executed by the control unit 40 described with reference to FIG.

  FIG. 19 is a flowchart illustrating an example of a control operation executed by the control unit 40 illustrated in FIG. 18. As described with reference to FIG. 6 according to the above-described embodiment, the hair or yarn entangled with the rotary brush 25 is illustrated in FIG. Indicates the control contents for unwinding and removing. In addition, when the sheet is wound around the outer periphery of the rotating brush 25 and cleaning is performed, when the user forgets to remove the sheet and tries to clean the carpet or the like, control is performed to remove the sheet.

  The process will be described according to the flow of FIG. 19 with reference to FIG. 18 and FIG.

  The control unit 40 determines whether or not a start signal is given (step S101). In this embodiment, when the “strong / medium / weak” key 202 is pressed, a start signal is given to the control unit 40, and the electric blower 42 according to the number of times the “strong / medium / weak” key 202 is pressed. A signal indicating that strong driving → middle driving → weak driving → strong driving is cyclically switched to the control unit 40.

  When determining that the start signal has been input, the control unit 40 turns on, for example, a drive flag provided in the RAM (step S102), starts a timer (step S103), and causes the electric blower 42 to perform a strong operation (step S104). That is, in this embodiment, when the “strong / medium / weak” key 202 is pressed, the electric blower is first strongly operated regardless of the number of times of pressing.

  The brush motor 44 is driven to rotate forward for T1 seconds (step S105), stopped for T2 seconds (step S106), reversely rotated for T3 seconds (step S107), and stopped for T4 seconds (step S108). This is performed until the time T0 is measured (step S109).

  Here, T1 = 0.2 seconds, T2 = 0.2 seconds, T3 = 0.5 seconds, and T4 = 0.2 seconds can be exemplified. With this control, when the electric vacuum cleaner 1 starts to drive, the rotating brush 25 is alternately switched between the normal rotation and the reverse rotation for T0 seconds. As described with reference to FIG. , The tangled hair and yarn are unwound. In addition, since the electric blower 42 is operated strongly in conjunction with the forward / reverse rotation of the rotary brush 25, a strong suction force works, and the hair and yarn unraveled from the rotary brush 25 are surely attached to the main body of the vacuum cleaner. Inhaled into 2. That is, the rotating brush 25 repeats forward / reverse rotation, and a strong suction force is generated in conjunction with the operation of unwinding the hair and yarn, so that the hair and yarn can be separated from the rotating brush 25.

  In addition, when the sheet is wound around the outer periphery of the rotating brush 25 and wiped and cleaned and the user forgets to remove the sheet, the rotating brush 25 rotates forward / reversely as described later, so that the sheet is wound. The sheet is sucked by the strong suction force of the electric blower 42. Therefore, it is possible to eliminate the problem of cleaning the surface to be cleaned such as a carpet while forgetting to remove the sheet and winding the sheet.

  In this embodiment, the timer is started in step S103, and it is determined whether the timer has timed T0 seconds in step S109. Instead of the timer, how many times the processing in steps S105 to S108 has been performed. The process may proceed to step S110 when the operations of steps S105 to S108 are performed a predetermined number of times (for example, 5 times).

  In this embodiment, in order to improve the durability of the brush motor 44 that drives the rotating brush 25, stop times T2 and T4 are introduced when the rotating brush 25 is switched between forward rotation and reverse rotation. If the brush motor 44 can guarantee the desired use period even if the rotation direction is changed without changing the stop period, the stop time may not be provided. T1, T2, T3, and T4 can be arbitrarily set.

  Next, control proceeds to step S110 where normal drive control is performed. That is, the electric blower 42 is driven so as to obtain a suction force according to the input signal based on the number of times of pressing the “strong / medium / weak” key 202 given together with the start signal.

  Further, in normal drive control, each time the “brush off / on” key 203 on the operation panel 200 is pressed, the rotary brush 25 is switched between normal rotation and stop. The night cleaning of the electric vacuum cleaner 1 is executed by such normal eating control.

  When the cleaning is completed, the user presses the “OFF” key 201 on the operation panel 200. When it is determined that the cut signal is input (YES in step S111), the control unit 40 turns off the drive flag and stops the electric blower 42 and the brush motor 44.

  According to the above control, at the start of operation of the electric blower 1, the rotating brush 25 is alternately switched between forward rotation / reverse rotation, the electric blower 42 is strongly operated, and hairs and threads entangled with the rotating brush 25 are removed. Since it is unraveled and removed, the subsequent cleaning can be performed satisfactorily in a state where the hair, yarn, and the like are not wrapped around the rotating brush 25.

  In addition, it is possible to open a problem of cleaning the surface to be cleaned such as a carpet while forgetting to remove the sheet from the rotating brush 25 and winding the sheet.

  When the vacuum cleaner 1 is given a start signal, instead of performing control to rotate the rotating brush 25 forward / reversely, for example, specific keys (other than the five keys provided on the operation panel 200 in FIG. 17) The controller 40 discriminates when the key is pressed (step S113), and the control process of steps S103 to S110 is performed according to the signal input of the specific key. Good.

  Each time the “strong / medium / weak” key 202 is pressed and the suction force of the electric blower 42 is switched, or the “brush off / on” key 203 is pressed and the rotary brush 25 is moved. When the rotation is started or when the rotation is stopped, the rotating brush 25 may be rotated forward and backward to loosen and remove hair or thread entangled with the rotating brush 25.

  Next, with reference to FIG. 20 to FIG. 23, the configuration and control operation for wiping and cleaning the sheet by winding the sheet around the rotating brush 25 of the suction tool 10 using the electric vacuum cleaner 1 described above will be described. To do.

  The “sheet” is an adsorption sheet that can adsorb dust such as cloth or paper, for example, a flooring sheet.

  The applicant of the present application has already proposed such a configuration, considering that such a sheet can be attached to a vacuum cleaner, and that the vacuum cleaner can also perform wiping with the sheet (see Patent Document 4). .

  This embodiment proposes a configuration and a control method capable of performing wiping cleaning using a sheet by winding the sheet around a rotating brush 25 provided in the suction tool 10 of the vacuum cleaner.

  20A to 20D are diagrams illustrating a procedure for wiping the suction tool 10 with the sheet 50 attached thereto.

  As illustrated in FIG. 20A, the sheet 50 is spread and placed on the floor surface 100, and the suction tool 10 is placed on the sheet 50 so that the rotary brush 25 faces the position near the tip of the sheet 50. In this state, the operation panel 200 (see FIG. 17) “attach / foil” key 204 is pressed.

  In response to this operation, the rotating brush 25 and the electric blower 42 are driven in a predetermined manner, and the sheet 50 is wound around the peripheral surface of the rotating brush 25 as shown in FIG. 20B. More specifically, the rotary brush 25 is rotated forward at a predetermined rotation speed in response to pressing of the “attach / fat” key 204. As a result, the sheet 50 is wound around the peripheral surface of the rotating brush 25 rotating from the leading end side and is wound around the rotating brush 25 as shown in FIG. 20B.

  The electric blower 42 sets a predetermined time from the start of the brush motor 44, in this embodiment, the time required for the sheet to be wound around the rotating brush 25. Specifically, after approximately 2 seconds have elapsed, It is supposed to start.

  When the electric blower 42 is driven simultaneously with the rotary brush 25, the sheet 50 is sucked by the electric blower 42 when the sheet 50 is wound around the rotary brush 25, and in particular, the central portion of the sheet facing the communication port 26 is The sheet 50 may not be uniformly wound around the outer periphery of the rotary brush 25 due to strong suction.

  In the present embodiment, since the electric blower 42 is started after the sheet is wound around the rotating brush 25, the problem that the sheet 50 is not uniformly wound by the suction force of the electric blower 42 can be solved.

  As shown in FIG. 20C, after the sheet 50 is wound around the rotary brush 25, the rotary brush 25 is rotated forward at a predetermined rotational speed, and a predetermined suction force is generated by the electric blower. 50 can clean the floor 100.

  In this wiping and cleaning state, the “brush off / on” key 203 can be operated. When the sheet 50 is wound, the sheet 50 is not wound straightly around the rotating brush 25, but is rotated obliquely or while the sheet 50 is biased with respect to the rotating brush 25 while being wiped and cleaned. The sheet 50 may be non-uniform with respect to the brush 25. In this case, when the rotary brush 25 is rotated, vibration may be felt greatly.

  In such a case, the user operates the “brush off / on” key 203 to stop the rotation of the rotary brush 25, and performs wiping and cleaning in the stopped state. The rotating brush 25 is rotated by frictional resistance with the surface to be cleaned, and can be wiped and cleaned using the entire circumference of the sheet 50.

  The suction tool 10 is provided with a sensor (not shown) that detects contact with the surface to be cleaned. When the suction tool 10 is lifted from the surface to be cleaned, the rotation of the rotary brush 25 is stopped and the rotary brush is rotated. Injuries and the like are prevented from being caused by fingers and the like coming into contact with 25. In the configuration in which the driving of the electric blower 42 is continued while the suction tool 10 is lifted from the surface to be cleaned, when the end of the sheet wound around the outer periphery of the rotary brush 25 is positioned in the vicinity of the communication opening 26, the end of the sheet is There is a possibility that abnormal noise may occur due to flapping by the suction force.

  In the present embodiment, when the suction tool 10 is lifted from the surface to be cleaned, the brush motor 44 and the electric blower 42 are stopped to prevent the generation of noise due to flapping of the sheet end.

  When the wiping and cleaning are completed, the “remove” key 205 on the operation panel 200 is pressed. Accordingly, the electric blower 42 is driven by the control unit 40 so that the suction force becomes strong, and for a predetermined time from the start of the electric blower 42, in the present embodiment, until the electric blower 42 has a strong suction force. After the elapse of time, specifically about 2 seconds, the rotary brush 25 is driven and controlled so as to alternate forward / reverse rotation.

  It has been described that when the rotating brush 25 is entangled with hair or lint around the rotary brush 25, the tangled hair or yarn is unwound when it is rotated forward / reversely. Similarly, as shown in FIG. 20D, when the rotating brush 25 is rotated in the forward / reverse rotation and the suction force is increased, the wound sheet is automatically separated from the rotating brush 25, and the electric vacuum cleaner It is sucked into the main body 2.

  FIG. 21 schematically shows how the sheet 50 wound around the rotating brush 25 is detached when the rotating brush 25 rotates forward / reversely.

  FIG. 21A shows the sheet 50 in which the rotary brush 25 is rotating forward, and FIGS. 21B and 10C show the periphery of the rotary brush 25 when the rotary brush 25 is reversed alternately forward / reversely. The state of the sheet 50 deviating from the surface is shown.

  22 and 23 are flowcharts showing the control contents of the wiping cleaning mode and the sheet removal mode executed by the control unit 40 shown in FIG. The control content of the wiping and cleaning mode will be described according to the flow of FIGS. 22 and 23 while referring to the block diagram shown in FIG. 19 and FIGS. 20A to 21 as necessary.

  The control unit 40 presses the “attach / fu” key 204 provided on the operation panel 200, and determines whether or not there is a signal input from the “attach / fu” key (step S121).

  When it is determined that there is signal input from the “ON / FUKU” key 204, the input from the “strong / medium / weak” key 202 and the “brush off / on” key 203 is prohibited, and the paper pack sensor 45 is turned on. Is determined (step S122).

  The paper pack sensor 45 is a sensor that is turned off when a paper pack is set in the vacuum cleaner main body 2. If the sensor 45 is turned on, it is determined that a resin container, not a paper pack, is set as a dust collecting function. The wiping and cleaning mode proceeds.

  If the sensor 45 is not on, it is determined that a paper pack is set in the electric vacuum cleaner main body 2, and the wiping cleaning mode cannot be performed.

  Next, the brush motor 44 is rotated forward at the rotation speed N1 (step S123).

  The rotation speed N1 of the brush motor 44 at this time is a rotation speed suitable for performing wiping and cleaning while rotating the rotating brush 25, winding the sheet 50 around the peripheral surface, and rotating the wound sheet. Specifically, the rotational speed N1 of the brush motor 44 is controlled such that the rotating brush 25 is rotated at a slower rotational speed that is lower than the normal rotational speed. Therefore, the sheet 50 is wound around the rotating brush 25.

  When the sheet 50 is wound around the rotating brush 25, the winding of the sheet 50 may be biased, and the vibration is likely to increase and the contact resistance with the surface to be cleaned is greater than when the sheet 50 is not wound. There is a problem that the load of the brush motor 44 increases.

  In order to solve this problem, the rotary brush 25 is controlled to rotate at a rotation speed lower than the normal rotation speed in a state where the sheet 50 is wound.

  Next, the timer is started (step S124), and the timer is a predetermined time, in this embodiment, the time required for the sheet 50 to be wound around the rotating brush 25, more specifically, about 2 seconds have elapsed. If the predetermined time has elapsed (step S125), the electric blower 42 is operated with a weak suction force (step S126), and wiping cleaning such as flooring is performed. At the time of wiping and cleaning, the electric blower 42 generates a weak suction force, and dust existing on the surface to be cleaned 100 (flooring or the like) is wiped off by the sheet 50 and also to the main body 2 of the vacuum cleaner. It is sucked and captured.

  When the wiping and cleaning are completed, the user presses the “OFF” key 201 on the operation panel 200. When it is determined that the cut signal has been input (YES in step S127), control unit 40 stops electric blower 42 and brush motor 44.

  Next, the sheet removal mode will be described with reference to FIG.

  When wiping and cleaning are completed and the “Remove” key 205 is pressed, the control unit 40 determines that there is a signal to remove (YES in Step S131), and increases the suction force of the electric blower 42 (Step S132). In the present embodiment, it is determined whether or not about 2 seconds have elapsed since the start of the blower 42, that is, the time required until the suction force of the electric blower 42 increases (steps S133 and S134). If the predetermined time has elapsed, the brush motor 44 is rotated forward for T1 seconds (step S135), then the brush motor 44 is stopped for T2 seconds (step S136), and the brush motor 44 is rotated reversely for T3 seconds (step S137). The brush motor 44 is rotated forwardly and reversely to stop the brush motor 44 for T4 seconds (step S138), and a determination is made as to whether or not a certain period of time has elapsed (step S139).

  Then, the forward rotation and the reverse rotation of the brush motor 44 are alternately repeated until a predetermined time elapses after the brush motor 44 is activated, for example, until 5 seconds elapses.

  By repeating forward and reverse rotations of the brush motor 44, the rotating brush 25 is rotated forward and backward, and the sheet 50 wound around the rotating brush 25 is loosened and removed, and rotated by the strong suction force by the electric blower 42. The sheet 50 removed from the brush 25 is sucked into the electric vacuum cleaner main body 2.

  In step S139, when a predetermined time has elapsed, the brush motor 44 and the electric blower 42 are turned off (step S140), and the sheet removal mode ends.

  The vacuum cleaner main body 2 shown in FIG. 1 can set a paper pack as a dust collecting function, and can also set a so-called cyclone unit which is a resin container for centrifuging and storing dust. Which is set can be detected by the built-in sensor 15. In the above-described embodiment, when the paper pack is set, the wiping cleaning mode using the sheet 50 is rejected. 50 is not sucked into the paper pack. Therefore, it is possible to prevent the sheet 50 from being filled up at an early stage by the sheet 50 and the suction force from being lowered due to the air resistance of the sheet 50.

  In the above-described embodiment, the rotary brush 25 of the suction tool 10 includes the wing cloth 29, so that the hair, thread, sheet 40, and the like wound around the rotary brush 25 can be easily removed by the action of the wing cloth 29. As described above, even if the rotating brush 25 is not provided with the wing cloth 29, it is possible to automatically remove hairs, threads, sheets and the like wound around the rotating brush 25. This is because the rotating brush 25 is switched between forward rotation and reverse rotation alternately in a predetermined manner, and at that time, the suction force by the electric blower is increased to gradually loosen the hair, yarn, sheet, etc. wound around the rotating brush. This is because loose hair, yarn, sheets, etc. are sucked with a strong suction force and thus come off the rotating brush.

  When wiping and cleaning a wet sheet wrapped around a rotating brush, the surface of the wet sheet gradually dries and the effect of the wet sheet is lost. The advantage of the wet sheet is that fine dust is easily adsorbed by moisture, and the dust adsorbing efficiency is higher than that of a dry sheet. Therefore, when the wet sheet surface dries, the effect and efficiency of wiping and cleaning are reduced. However, the inside of the wound wet sheet sufficiently contains water, and it is preferable to use this water effectively.

  Therefore, at the start of cleaning, in order to prevent moisture from splashing from the wet sheet and sucking into the cleaner body, the rotating brush 25 is rotated at the lowest speed and rotated as the outside of the wet sheet dries. It is conceivable to increase the number of rotations of the brush 25 so that moisture on the inside is oozed out to the outer peripheral side using centrifugal force.

  FIG. 24 is a flowchart showing the control contents for gradually increasing the number of rotations of the rotating brush 25 by the control unit in the wiping cleaning mode. The control content of the wiping cleaning mode will be described according to the flow of FIG. 24 while referring to the block diagram shown in FIG. 18 and FIGS. 20A to 21 as necessary.

  The control unit 40 presses the “attach / fu” key 204 provided on the operation panel 200, and determines whether or not there is a signal input from the “attach / fu” key (step S141).

  When it is determined that there is signal input from the “ON / FUKU” key 204, the input from the “strong / medium / weak” key 202 and the “brush off / on” key 203 is prohibited, and the paper pack sensor 45 is turned on. Is determined (step S142).

  The paper pack sensor 45 is a sensor that is turned off when a paper pack is set in the vacuum cleaner main body 2. If the sensor 45 is turned on, it is determined that a resin container, not a paper pack, is set as a dust collecting function. The wiping and cleaning mode proceeds.

  If the sensor 45 is not on, it is determined that a paper pack is set in the electric vacuum cleaner main body 2, and the wiping cleaning mode cannot be performed.

  Next, the brush motor 44 is rotated forward at the lowest rotation speed N1 (step S143).

  The rotation speed N1 of the brush motor 44 at this time was such that the rotary brush 25 was rotated, the wet sheet 50 was wound around the peripheral surface, the wiped sheet was wiped and cleaned while rotating the wound wet sheet, and the brush was wound in a rotated state. The rotation speed is such that moisture does not scatter much from the wet sheet. Specifically, the rotational speed N1 of the brush motor 44 is controlled such that the rotating brush 25 is rotated at a slower rotational speed that is lower than the normal rotational speed. Therefore, the wet sheet 50 is wound around the rotating brush 25.

  When the wet sheet 50 is wound around the rotating brush 25, the winding of the wet sheet 50 may be biased, and the vibration is likely to be larger than when the wet sheet 50 is not wound, and the wet sheet 50 is in contact with the surface to be cleaned. There exists a subject which resistance becomes large and the load of the brush motor 44 becomes large.

  In order to solve this problem, the rotary brush 25 is controlled to rotate at a rotational speed lower than the normal rotational speed in a state where the wet sheet 50 is wound.

  Next, the timer is started (step S144), and the timer is a predetermined time, in this embodiment, the time required for the wet sheet to be wound around the rotating brush 25, more specifically, about 2 seconds have elapsed. (Step S145), if a predetermined time has elapsed, the electric blower 42 is operated with a weak suction force (step S146), and wiping and cleaning such as flooring is performed. At the time of wiping and cleaning, the electric blower 42 generates a weak suction force, and dust existing on the surface to be cleaned 100 (flooring and the like) is wiped off by the wet sheet 50 and the electric vacuum cleaner main body 2 It is also sucked and captured.

  Next, a timer is started (step S147), and after a period of time such that cleaning starts and the surface of the wet sheet 50 is dried, more specifically, about 10 seconds (step S148), the brush motor 44 is started. Is increased (step S149). As the rotational speed of the brush motor 44 increases, the rotational speed of the rotary brush 25 increases and the centrifugal force increases, so that moisture inside the wet sheet 50 wound around the rotary brush 25 oozes out to the surface, and the moisture is removed. Use and continue wiping.

  Steps S147 to S149 are repeated, and the water inside the wet sheet 50 is effectively used for wiping and cleaning, and the rotational speed of the brush motor 44 is increased to a speed at which no significant vibration occurs when the wet sheet 50 is wound. Increases, the increase in the rotation speed of the brush motor 44 is stopped (step S150).

  The minimum number of rotations of the brush motor 44 in step S143, the number of rotations of the brush motor 44 to be increased in step S148, the number of times to repeat steps S147 to S149, and the brush for stopping the increase in the number of rotations of the brush motor 44 in step S150 The number of rotations of the motor 44 is appropriately set according to the configuration that employs this control content.

  When the wiping and cleaning are completed, the user presses the “OFF” key 31 on the operation panel 200. When it is determined that the cut signal is input (YES in step S151), the control unit 40 stops the electric blower 42 and the brush motor 44 (step S152).

  In this control content, it is assumed that the rotary brush 25 is wiped with a suction sheet such as a flooring sheet instead of a wet sheet. In this case, there is no scattering of moisture from the sheet, so there is no need to gradually increase the rotation speed of the brush motor 44.

  Accordingly, a moisture sensor for detecting moisture is disposed at an appropriate position where the sucked air of the suction tool 10 passes, for example, the bend 21, and the moisture sensor detects moisture for a predetermined time after the sheet 50 is wound. In such a case, the above-described control content is performed, and if the moisture sensor does not detect moisture, step S147 from step S147 for gradually increasing the rotation speed of the brush motor 44 is omitted, and the process proceeds to step S150. You can do that.

  The present invention is not limited to the various embodiments described above, and various modifications can be made within the scope of the claims.

It is a right view of the vacuum cleaner which concerns on one Embodiment of this invention. It is a top view for demonstrating the structure of an operation panel. It is a block diagram which shows the electrical structure of the vacuum cleaner which concerns on one Embodiment of this invention. It is a right side surface longitudinal cross-sectional view of a suction tool. It is a figure for demonstrating the relationship between rotation of the rotating brush 25 and the extent of the wing cross 29 spreading. It is a right side longitudinal cross-sectional view of the suction tool 10. 3 is a flowchart illustrating an example of a control operation executed by a control unit 40. It is a figure showing the procedure which attaches the wet sheet | seat 50 to the suction tool 10, and performs wiping cleaning. It is a figure showing the procedure which attaches the wet sheet | seat 50 to the suction tool 10, and performs wiping cleaning. It is a figure showing the procedure which attaches the wet sheet | seat 50 to the suction tool 10, and performs wiping cleaning. It is a figure showing the procedure which attaches the wet sheet | seat 50 to the suction tool 10, and performs wiping cleaning. It is a figure which shows a mode that the wet sheet 50 wound around the rotating brush 25 remove | deviates when the rotating brush 25 rotates forward / reversely. 4 is a flowchart showing control details of a wiping cleaning mode executed by control unit 40. In the vacuum cleaner main body 60, it is sectional drawing of the state in which the paper pack 61 was set. In the vacuum cleaner main body 60, it is sectional drawing of the state in which the cyclone unit 62 was set. It is a figure for demonstrating operation | movement of the sensor. It is a right side surface longitudinal cross-sectional view of the suction tool 10 with which an example of the poka prevention mechanism was added. It is the right side surface longitudinal cross-sectional view of the suction tool 10 with which the other example of the pocket prevention mechanism was added. It is the right side surface longitudinal cross-sectional view of the suction tool 10 to which the further another example of the poka prevention mechanism was added. It is a top view of the operation panel for demonstrating other embodiment of this invention. It is a block diagram which shows the electric constitution of the vacuum cleaner which concerns on other embodiment of this invention. 3 is a flowchart illustrating an example of a control operation executed by a control unit 40. It is a figure showing the procedure which attaches the sheet | seat 50 to the suction tool 10, and performs wiping cleaning. It is a figure showing the procedure which attaches the sheet | seat 50 to the suction tool 10, and performs wiping cleaning. It is a figure showing the procedure which attaches the sheet | seat 50 to the suction tool 10, and performs wiping cleaning. It is a figure showing the procedure which attaches the sheet | seat 50 to the suction tool 10, and performs wiping cleaning. It is a figure which shows a mode that the sheet | seat 50 wound around the rotating brush 25 will remove | deviate when the rotating brush 25 rotates forward / reversely. 4 is a flowchart showing control details of a wiping cleaning mode executed by control unit 40. 4 is a flowchart showing control details of a sheet removal mode executed by a control unit 40. 7 is a flowchart showing control details of another wiping cleaning mode executed by control unit 40.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner 2 Vacuum cleaner main body 10 Suction tool 20 Housing 21 Bend 24 Suction port 25 Rotating brush 29 Wing cross (Tangle prevention blade)
30 Operation Panel 40 Control Unit 42 Electric Blower 44 Brush Motor 50 Wet Sheet, Sheet 55 Catch Rib (Baffle Member)
56 Slanted brushed fabric (baffle)
57 Air intake
60 Vacuum Cleaner Body 61 Paper Pack 62 Cyclone Unit 63 Electric Blower

Claims (3)

A housing having a suction port opposed to a surface to be cleaned, a rotating brush provided in the housing and having a part of a peripheral surface facing the suction port, and incorporated in the housing for rotating the rotating brush A suction tool including a motor and a cylindrical bend for guiding air and dust sucked into the housing from the suction port, and protruding from the housing;
A vacuum cleaner main body connected to the bend of the suction tool and generating suction by an electric blower,
Removal control means for repeating the operation of rotating the rotating brush forward and backward by the motor in order to remove the sheet wound around the peripheral surface of the rotating brush;
The vacuum cleaner characterized by having.   The electric vacuum cleaner according to claim 1, wherein the removal control means increases the suction force of the electric blower.   The electric vacuum cleaner according to claim 1, wherein the removal control means activates the rotating brush after a predetermined time has elapsed since the activation of the electric blower.

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