JP2010069019A - Electric vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric vacuum cleaner which can remove dust and dirt accumulated at the foot of a wall when a suction port body is located at the foot of the wall and so forth. <P>SOLUTION: This electric vacuum cleaner 1 includes a moving direction detecting section 36, a wall detecting section 30, a suction port body control section 40, and an electric motor 24. The moving direction detecting section 36 outputs a moving direction signal to the suction port body control section 40 by corresponding with the moving state of the suction port body 8. The wall detecting section 30 outputs an obstacle detecting signal to the suction port body control section 40 by corresponding to the state of an obstacle which is present in front of the suction port body 8. The suction port body control section 40 makes a rotary cleaning body 20 normally rotate or reversely rotate by operating the electric motor 24 when the moving direction detecting section 36 outputs a stopping signal, and also, the wall detecting section 30 outputs a wall surface contact signal provided that a period of time which has passed after the point when the suction port body 8 has come into contact with an obstacle such as a wall surface is within a specified period of time T. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner including a suction port body having a rotary cleaning body that is rotated by an electric motor.

The vacuum cleaner described in Patent Literature 1 includes a suction port body having a moving direction detection unit and a rotary cleaning body. In this vacuum cleaner, when the suction port body is continuously stopped for a predetermined time or longer, the rotary cleaning body alternately repeats forward rotation and reverse rotation. The user of this electric vacuum cleaner can clean the dust collected by the wall, for example, by stopping the suction port body at the wall side for a predetermined time or longer.
JP 2007-313101 A

  In the electric vacuum cleaner described in Patent Document 1, during the cleaning, for example, by temporarily moving an obstacle such as a chair placed in a room, the suction port body is continued for a predetermined time. If stopped, the rotary cleaning body alternately repeats forward rotation and reverse rotation regardless of the user's intention.

  The present invention proposes a vacuum cleaner capable of removing dust accumulated on the wall when the suction port is positioned on the wall.

  In order to solve the above problems, in the present invention, a suction port body having an opening for sucking dust from a surface to be cleaned, a rotary cleaning body rotatably provided in the opening, and an electric motor for rotating the rotary cleaning body. A moving direction detection unit provided in the suction port body, a wall detection unit provided in the suction port body, the movement direction detection unit detects a stop state of the suction port body, and the wall When the detection unit detects that the obstacle and the suction port body are separated from each other, the motor is stopped, while the moving direction detection unit detects the stop state of the suction port body, and And a control unit that continuously operates the electric motor when the wall detection unit detects that the suction port is in contact with an obstacle.

  INDUSTRIAL APPLICABILITY The present invention can propose a vacuum cleaner that can remove dust accumulated on the wall when the suction port is positioned on the wall.

  An embodiment of a vacuum cleaner according to the present invention will be described with reference to FIGS. 1 to 7.

  FIG. 1 is a view showing an appearance of a vacuum cleaner according to the present invention.

  As shown in FIG. 1, the vacuum cleaner 1 according to this embodiment includes a vacuum cleaner body 2, a dust collecting hose 3, a hand operating tube 4, a gripping unit 5, an operating unit 6, and an extension tube 7. The suction port body 8 is provided.

  The cleaner body 2 is formed with a connection port 2a to which one end of the dust collecting hose 3 is detachably connected. A dust separating and collecting part (not shown) and an electric blower 9 are accommodated in the cleaner body 2. The dust separating and collecting part is detachably housed inside the cleaner body 2 and communicated with the connection port 2a. The electric blower 9 applies a negative pressure to the connection port 2a through the dust separating and collecting part. A main body exhaust port (not shown) through which the exhaust from the electric blower 9 is discharged is formed in the cleaner body 2. The cleaner body 2 includes a power cord 11. A power plug 12 is formed at the free end of the power cord 11.

  The dust collecting hose 3 has flexibility and is formed in an elongated substantially cylindrical shape that can be bent. One end of the dust collecting hose 3 is detachably connected to the connection port 2 a and communicates with the inside of the cleaner body 2.

  One end of the hand control tube 4 is provided at the other end of the dust collection hose 3 and communicates with the inside of the cleaner body 2 via the dust collection hose 3.

  The grip 5 is operated by the user of the vacuum cleaner 1 to operate the vacuum cleaner 1. The grip 5 is projected from the other end of the hand operation tube 4 so as to bend toward the one end of the hand operation tube 4 provided with the dust collecting hose 3.

  The operation unit 6 is provided on the grip unit 5. When the operation unit 6 is operated by the user of the vacuum cleaner 1, the vacuum cleaner 1 is set to a plurality of drive modes. The operation unit 6 includes a turn-off switch 6a for stopping the operation of the electric vacuum cleaner 1, an activation switch 6b for starting the operation of the electric vacuum cleaner 1, and the like.

  The extension tube 7 is formed in an elongated and substantially cylindrical shape that can be expanded and contracted. One end of the extension tube 7 is detachably connected to the other end of the hand operation tube 4 and communicates with the inside of the cleaner body 2 through the hand operation tube 4 and the dust collecting hose 3.

  The suction port body 8 is detachably connected to one end of the extension pipe 7 and communicates with the interior of the cleaner body 2 via the extension pipe 7, the hand operation pipe 4 and the dust collection hose 3.

  When the electric vacuum cleaner 1 is operated, the electric blower 9 is activated, and a negative pressure is applied to the inside of the cleaner main body 2. This negative pressure acts on the suction port body 8 from the connection port 2a through the dust collecting hose 3, the hand control tube 4, and the extension tube 7. If it does so, the vacuum cleaner 1 will inhale the dust collected on the to-be-cleaned surfaces, such as a floor, with air from the suction inlet body 8, and will clean the to-be-cleaned surface. The dust-containing air sucked into the suction port body 8 is separated into air and dust by the dust separating and collecting part accommodated in the cleaner body 2. The separated dust is collected in a dust separation and collection unit. On the other hand, the separated air is sucked into the electric blower 9 and discharged from the main body exhaust port of the cleaner body 2.

  FIG. 2 is a perspective view of the upper surface side of the suction port body of the electric vacuum cleaner according to the present invention.

  As shown in FIG. 2, the suction port body 8 includes a wide suction port body 15 and a connecting pipe portion 16. The connecting pipe portion 16 is provided in the rear portion of the suction port body 15 and in the center portion in the width direction. The extension pipe 7 is detachably connected to the connection pipe portion 16.

  Here, let the advancing direction (solid line arrow X in FIG. 2) of the suction inlet 8 be the front, and let the opposite direction be back. Further, when the front is viewed from behind the suction port body 8, the left side (solid arrow Y in FIG. 2) is the left side, and the opposite direction is the right side. Furthermore, the + Z direction of the right-handed coordinate system orthogonal to the front-rear direction and the left-right direction of the suction port body 8 is set as the upper side, and the opposite direction is set as the lower side.

  A suction chamber 18 having a suction opening 17 is formed inside the front side of the suction port body 15. The suction chamber 18 is formed wide within the suction port body 15. The suction chamber 18 communicates with the connecting pipe portion 16. The suction opening 17 is an opening formed on the bottom surface of the suction port body 15. The suction opening 17 is a substantially rectangular opening formed in the left-right direction of the suction opening body 15 in an elongated shape. When the suction port 8 is disposed on the surface to be cleaned, the suction opening 17 is positioned to face the surface to be cleaned. A rotary cleaning body 20 extending along the suction opening 17 is disposed in the suction chamber 18.

  The rotary cleaning body 20 includes a rotary shaft 21 and a plurality of brush hairs 22 protruding in a spiral band shape from the peripheral wall portion of the rotary shaft 21. The rotating shaft 21 is disposed along the left-right direction of the suction port body 15. Both end portions of the rotating shaft 21 are rotatably held by left and right wall portions constituting the suction chamber 18. The rotary cleaning body 20 may include a blade (not shown) made of an elastic body such as rubber in addition to the brush bristles 22.

  An electric motor 24 is accommodated in the rear side of the suction inlet body 15. The electric motor 24 is a drive source that rotates the rotary cleaning body 20. The output shaft of the electric motor 24 is connected to the rotating shaft 21 of the rotary cleaning body 20 via a power transmission mechanism such as a timing belt 25 or a gear (not shown). In addition, the rotation direction of the electric motor 24 according to the present embodiment and the rotation direction of the rotary cleaning body 20 are configured to coincide with each other. However, you may comprise by inverting the rotation direction of the electric motor 24 and the rotary cleaning body 20 via a power transmission mechanism.

  A notch 26 that opens forward is formed in the center of the front surface of the suction inlet body 15. The notch 26 communicates with the suction chamber 18. Further, the notch 26 is opened continuously to the suction opening 17. A movable cover 27 is provided in the notch 26. The movable cover 27 is provided so as to be rotatable about a support shaft 28 provided at the upper edge of the notch 26. The rotation range of the movable cover 27 is regulated within a predetermined range in the front-rear direction. The movable cover 27 is biased forward by a spring (not shown).

  In the vicinity of both ends of the front surface of the suction inlet body 15, a pair of left and right wall detectors 30 are provided. The wall detection unit 30 detects that the suction port body 8 is in contact with an obstacle such as a wall surface. Specifically, the wall detection unit 30 is an proximity sensor or a contact sensor, and a magnetic sensor, a sensor such as an infrared sensor or an ultrasonic sensor, or a microswitch can be used. The obstacle detection by the wall detection unit 30 can appropriately employ the logical sum or logical product of the detection results of the respective wall detection units 30.

  The connecting pipe part 16 includes a rotating connecting pipe part 31 and a tilting connecting pipe part 32. The rotation connection pipe part 31 is provided in the suction inlet main body 15 so that rotation is possible. Further, the rotation connecting pipe portion 31 is configured to be rotatable around the X axis that is the front-rear direction of the suction port body 8. The tilt connection pipe part 32 is provided on the rotary connection pipe part 31 so as to be tiltable. Further, the tilt connection pipe portion 32 is configured to be rotatable around an axis orthogonal to the X axis that is the rotation axis of the rotation connection pipe portion 31. Further, the tilt connection pipe portion 32 is detachably connected to the distal end portion of the extension pipe 7. Therefore, the suction inlet body 15 and the extension pipe 7 are configured to be relatively rotatable and tiltable.

  FIG. 3 is a perspective view of the lower surface side of the suction port body of the electric vacuum cleaner according to the present invention.

  As shown in FIG. 3, a pair of left and right rear wheels 34 are provided at the rear portion of the bottom surface of the suction port body 15 so as to protrude from both the left and right sides of the connection pipe portion 16. Further, a front wheel 35 is provided in a pair of left and right sides near the rear edge of the suction opening 17 in the bottom surface of the suction port body 15 so as to be biased to the left and right sides.

  A moving direction detection unit 36 is accommodated in the inlet body 15. The moving direction detector 36 is connected to at least one of the front wheels 35. The moving direction detector 36 detects the traveling direction of the suction port 8. Specifically, the movement direction detection unit 36 detects whether the suction port body 8 is moving forward or backward by detecting the rotation direction of the front wheel 35. As the moving direction detection unit 36, a light detection sensor having a rotating member (not shown) and a photoelectric detecting unit (not shown) for detecting the rotating direction of the rotating member can be used.

  FIG. 4 is a block diagram of a vacuum cleaner according to the present invention.

  As shown in FIG. 4, the vacuum cleaner 1 includes an operation unit 6, a vacuum cleaner main body control unit 37, an electric blower 9, a moving direction detection unit 36, a wall detection unit 30, a power supply circuit 38, and a suction The mouth body control unit 40, the switching element 41, and the electric motor 24 are provided.

  The cleaner body control unit 37 and the electric blower 9 are accommodated in the cleaner body 2. The moving direction detection unit 36, the wall detection unit 30, the power supply circuit 38, the suction port body control unit 40, the switching element 41, and the electric motor 24 are accommodated in the suction port body 8.

  The operation unit 6 outputs an operation signal corresponding to the operation content input by the user of the electric vacuum cleaner 1 to the cleaner main body control unit 37. Specifically, when the user of the vacuum cleaner 1 operates the off switch 6a, the operation unit 6 outputs a stop signal Soff of the vacuum cleaner 1 to the cleaner main body control unit 37. Moreover, the operation part 6 will output the starting signal Son of the vacuum cleaner 1 to the cleaner main body control part 37, if the user of the vacuum cleaner 1 operates the starting switch 6b.

  The vacuum cleaner main body control unit 37 starts or stops the operation of the electric blower 9 according to the operation signal output from the operation unit 6. Specifically, when the operation unit 6 outputs the activation signal Son, the operation of the electric blower 9 is started. On the other hand, when the operation unit 6 outputs the stop signal Soff, the operation of the electric blower 9 is stopped. In addition, when the operation unit 6 outputs the activation signal Son, the cleaner main body control unit 37 starts the operation of the electric blower 9 and operates the power supply circuit 38.

  The movement direction detection unit 36 outputs a movement direction signal to the suction port body control unit 40 in correspondence with the movement state of the suction port body 8. Specifically, when the suction port 8 is in the forward state, a forward signal is output to the suction port controller 40. On the other hand, the moving direction detection unit 36 outputs a backward signal to the suction port control unit 40 when the suction port 8 is in the backward state. The moving direction detection unit 36 outputs a stop signal to the suction port body control unit 40 when the suction port body 8 is in a stopped state. That is, the forward signal, the backward signal, and the stop signal are movement direction signals.

  The wall detection unit 30 outputs an obstacle detection signal to the suction port control unit 40 in correspondence with the state of the obstacle existing in front of the suction port body 8. Specifically, when the suction port 8 is brought into contact with an obstacle such as a wall surface, the wall detection unit 30 outputs a wall surface contact signal to the suction port control unit 40. On the other hand, the wall detection unit 30 sends a wall surface non-contact signal to the suction port body control unit 40 if the suction port body 8 is not in contact with an obstacle such as a wall surface, that is, separated from the obstacle. Output. That is, the wall surface contact signal and the wall surface non-contact signal are obstacle detection signals.

  The power supply circuit 38 generates power to be supplied to the electric motor 24 based on the control of the cleaner main body control unit 37.

  The suction port control unit 40 controls the operation of the electric motor 24 when electric power is supplied from the power supply circuit 38. The suction port body control unit 40 controls the output and rotation direction of the electric motor 24 via the switching element 41.

  When the movement direction detection unit 36 outputs a forward signal, the suction port body control unit 40 operates the electric motor 24 to rotate the rotary cleaning body 20 in the normal direction. On the other hand, when the moving direction detector 36 outputs a backward signal, the electric motor 24 is operated to rotate the rotary cleaning body 20 in the reverse direction.

  Here, the normal rotation of the rotary cleaning body 20 is a state in which the angular velocity vector of the rotating rotary cleaning body 20 extends to the left of the suction port body 15, while the reverse rotation of the rotary cleaning body 20 is a rotation. In this state, the angular velocity vector of the rotating cleaning body 20 is extended in the right direction of the suction port body 15. When the rotary cleaning body 20 rotates forward, a moving force in the forward direction is generated at the suction port body 8. On the other hand, when the rotary cleaning body 20 rotates in the reverse direction, a moving force in the backward direction is generated in the suction port body 8.

  Further, the suction port body control unit 40 is configured such that when the movement direction detection unit 36 outputs a stop signal and the wall detection unit 30 outputs a wall surface non-contact signal, that is, the suction port body 8 is not near the wall. When stopped on the cleaning surface, the electric motor 24 is stopped and the rotary cleaning body 20 is stopped. On the other hand, the suction port control unit 40 is configured such that when the movement direction detection unit 36 outputs a stop signal and the wall detection unit 30 outputs a wall surface contact signal, that is, the suction port body 8 is an obstacle such as a wall surface. If the time elapsed since the suction port body 8 contacted an obstacle such as a wall surface is within a predetermined time T, the motor 24 is operated to rotate the rotary cleaning body 20 forward or Reverse rotation.

  Further, the suction port body control unit 40 sets the initial value of the time elapsed after the suction port body 8 comes into contact with an obstacle such as a wall surface to a zero value. On the other hand, when the wall detection unit 30 outputs a wall surface non-contact signal, the time that has elapsed since the suction port 8 has contacted an obstacle such as a wall surface is set to a zero value. On the other hand, when the wall detection unit 30 outputs a wall surface contact signal, the elapsed time after the suction port 8 comes into contact with an obstacle such as a wall surface is measured. The predetermined time T is, for example, about 5 seconds, and a time during which dust on the wall can be sufficiently removed can be set as required.

  The switching element 41 is an element such as a bidirectional thyristor or a reverse blocking three-terminal thyristor used for controlling the electric power supplied to the electric motor 24. The switching element 41 controls the output and rotation direction of the electric motor 24 by controlling the phase angle of the AC power supply.

  Operation control of the electric motor 24 is performed by, for example, a program installed in a microcomputer constituting the suction port body control unit 40.

  Next, operation control of the electric motor 24 of the vacuum cleaner 1 will be described.

  When the activation signal Son based on the operation input of the activation switch 6b is input from the operation unit 6 to the vacuum cleaner main body control unit 37, the electric vacuum cleaner 1 starts operation.

  FIG. 5 is a flowchart showing operation control of the electric motor of the vacuum cleaner according to the present invention.

  As shown in FIG. 5, first, in step S <b> 1, when the vacuum cleaner 1 starts operation, movement detection of the suction port body 8 is started. That is, when the operation unit 6 outputs the activation signal Son, the cleaner main body control unit 37 starts the operation of the electric blower 9 and operates the power supply circuit 38. When the power supply circuit operates, the suction port control unit 40 acquires a movement direction signal from the movement direction detection unit 36.

  Next, in step S <b> 2, the suction port body control unit 40 determines whether or not the suction port body 8 is moving based on the movement direction signal acquired from the movement direction detection unit 36. If the movement direction signal acquired from the movement direction detection unit 36 is an advanced signal or a reverse signal, the suction port body control unit 40 determines that the suction port body 8 is moving and proceeds to step S3. On the other hand, if the movement direction signal acquired from the movement direction detection unit 36 is a stop signal, the suction port control unit 40 determines that the suction port 8 is stopped and proceeds to step S4.

  Next, in step S3, if the movement direction signal acquired from the movement direction detection unit 36 is an advanced signal, the suction port body control unit 40 operates the rotary cleaning body 20 in a normal rotation. On the other hand, if the movement direction signal acquired from the movement direction detection unit 36 is the reverse signal, the suction port body control unit 40 operates the rotary cleaning body 20 in the reverse rotation. Moreover, if the suction inlet body control part 40 drive | operates the rotary cleaning body 20, it will maintain the driving | running state and will return to step S1.

  Next, in step S4, detection of the presence or absence of the approach of the suction inlet 8 and obstacles, such as a wall surface, is started. That is, the suction port control unit 40 acquires an obstacle detection signal from the wall detection unit 30.

  Next, in step S <b> 5, the suction port control unit 40 determines whether or not the suction port body 8 is in contact with an obstacle such as a wall surface based on the obstacle detection signal acquired from the wall detection unit 30. To do. If the obstacle detection signal acquired from the wall detection unit 30 is a wall surface contact signal, the suction port body control unit 40 determines that the suction port body 8 is in contact with an obstacle such as a wall surface, and the step Proceed to S6. On the other hand, if the obstacle detection signal acquired from the wall detection unit 30 is a wall surface non-contact signal, the suction port body control unit 40 determines that the suction port body 8 is not in contact with an obstacle such as a wall surface. Then, the process proceeds to step S9.

  Next, in step S <b> 6, the suction port body control unit 40 continues the operation of the rotary cleaning body 20. At this time, the suction port body control unit 40 operates the rotary cleaning body 20 by forward rotation or reverse rotation.

  Next, in step S7, the suction inlet body control part 40 starts the measurement of the time which passed since the suction inlet body 8 and obstacles, such as a wall surface, contacted. The suction inlet control unit 40 accumulates and measures the measurement time when measuring this time.

  Next, in step S <b> 8, the suction port body control unit 40 compares the time elapsed after the suction port body 8 and the obstacle such as the wall surface are in contact with a predetermined time T. If the time elapsed since the suction port 8 and the obstacle such as the wall surface contacted is within the predetermined time T, the process returns to step S4. On the other hand, when the time elapsed since the suction port 8 and the obstacle such as the wall surface have contacted exceeds a predetermined time T, the suction port body control unit 40 detects that the suction port body 8 and the obstacle such as the wall surface are The time elapsed after contact is set to 0, and the process proceeds to step S9. That is, if the suction port body 8 stops when the suction port body 8 comes into contact with an obstacle such as a wall surface and the time elapsed since the suction port body 8 stopped is within a predetermined time T. The rotary cleaning body 20 is rotated forward or backward.

  Next, in step S9, the suction inlet control part 40 stops the rotary cleaning body 20, maintains the driving | running state, and returns to step S1.

  Next, the cleaning operation of the electric vacuum cleaner 1 according to the present embodiment will be described.

  A user of the vacuum cleaner 1 first connects the dust collecting hose 3 to the connection port 2 a of the cleaner body 2. Next, the extension pipe 7 is connected to the hand control pipe 4. Further, the suction port 8 is connected to the extension pipe 7.

  Next, the user of the vacuum cleaner 1 pulls out the power cord 11 from the vacuum cleaner body 2 and connects the power plug 12 to an outlet (not shown) for supplying commercial power.

  Next, the user of the vacuum cleaner 1 arranges the suction port body 8 on the surface to be cleaned such as a floor surface, and grips the grip portion 5 and operates the start switch 6b. Then, the electric blower 9 operates according to the operation mode set by the start switch 6b. At this time, the cleaner main body control unit 37 operates the power supply circuit 38. The suction port body control unit 40 operates the electric motor 24 via the switching element 41 when electric power is supplied from the power supply circuit 38.

  Next, the user of the vacuum cleaner 1 travels through the suction port 8 by repeating forward and backward alternately.

  At this time, when the suction port body 8 moves forward, the moving direction detector 36 detects the rotation direction of the front wheel 35 and outputs a forward signal. The suction port body control unit 40 rotates the electric motor 24 in the normal rotation based on the forward signal, and the rotary cleaning body 20 rotates in the normal direction. Then, the rotary cleaning body 20 scoops up dust on the surface to be cleaned rearward and upward.

  On the other hand, when the suction port 8 moves backward, the moving direction detector 36 detects the rotational direction of the front wheel 35 and outputs a backward signal. The suction port body control unit 40 rotates the electric motor 24 in reverse rotation based on the reverse signal, and the rotary cleaning body 20 rotates in reverse. Then, the rotary cleaning body 20 scoops up dust on the surface to be cleaned forward and upward.

  In addition, when the suction port body 8 is switched between forward and backward, the moving direction detection unit 36 detects the stop of the rotation of the front wheel 35 and outputs a stop signal, and the wall detection unit 30 outputs a wall surface non-contact signal. To do. The suction port body control unit 40 stops the rotary cleaning body 20 based on the stop signal of the movement direction detection unit 36 and the wall surface non-contact signal of the wall detection unit 30.

  Further, when the suction port body 15 comes into contact with an obstacle such as a wall as the suction port body 8 moves forward, the moving direction detection unit 36 detects the stop of the rotation of the front wheel 35 and outputs a stop signal. At the same time, the wall detector 30 outputs a wall contact signal. Based on the stop signal of the moving direction detection unit 36 and the wall contact signal of the wall detection unit 30, the suction port body control unit 40 determines the time elapsed since the suction port body 8 contacted an obstacle such as a wall surface. If it is within the predetermined time T, the rotary cleaning body 20 is rotated forward or backward. Then, the rotary cleaning body 20 scoops up dust at the wall.

  Dust scraped from the surface to be cleaned by the rotary cleaning body 20 is sucked into the suction port body 8 through the suction opening 17.

  The dust-containing air sucked into the suction port body 8 sequentially passes through the extension tube 7, the hand operation tube 4, and the dust collecting hose 3, and then guided to the connection port 2 a of the cleaner body 2. Next, the dust-containing air is sucked into the cleaner body 2.

  Dust contained in the dust-containing air is collected by a dust separation and collection unit accommodated in the cleaner body 2.

  The air from which the dust is separated is sucked into the electric blower 9 to become exhaust air, and is exhausted from the main body exhaust port to the outside of the cleaner main body 2.

  That is, the suction port body control unit 40 is configured such that when the moving direction detection unit 36 outputs a stop signal and the wall detection unit 30 outputs a wall surface non-contact signal, that is, the suction port body 8 is not near the wall. When stopped on the cleaning surface, the rotary cleaning body 20 is stopped. On the other hand, when the suction port body 8 stops when the suction port body 8 comes into contact with an obstacle such as a wall surface, the time elapsed since the suction port body 8 contacted the wall is within a predetermined time T. If there is, the rotary cleaning body 20 is operated in a normal rotation or a reverse rotation.

  Therefore, according to the vacuum cleaner 1 which concerns on this embodiment, when the suction inlet 8 stops temporarily with the reciprocating motion of a forward and backward movement, the rotary cleaning body 20 is stopped reliably and an electric cleaning is carried out. The cleaning operation by the user of the machine 1 can be assisted, and when the suction port body 8 comes into contact with an obstacle such as a wall and stops, the operation of the rotary cleaning body 20 is maintained and the dust on the wall is maintained. Can be reliably removed.

  Moreover, according to the vacuum cleaner 1, when the suction port body 8 is brought into contact with an obstacle such as a wall and stopped, the rotary cleaning body 20 is stopped when a predetermined time T elapses. The amount can be suppressed.

  Next, another example of operation control of the electric motor 24 of the vacuum cleaner 1 will be described.

  FIG. 6 is a flowchart showing another example of operation control of the electric motor of the vacuum cleaner according to the present invention.

  The suction port body control unit 40 is configured so that the moving direction detection unit 36 outputs a stop signal and the wall detection unit 30 outputs a wall surface contact signal, that is, the suction port body 8 comes into contact with an obstacle such as a wall surface. In this case, the rotational speed of the rotary cleaning body 20 can be increased to rotate forward or backward.

  The processing from step S11 to step S12 in FIG. 6 is the same as the processing from step S1 to step S2 in FIG. 5, and the processing from step S14 to step S15 in FIG. 6 is the same as that from step S4 to step S5 in FIG. The processing from step S17 to step S19 in FIG. 6 is the same as the processing from step S7 to step S9 in FIG.

  As shown in FIG. 6, in step S13, if the movement direction signal acquired from the movement direction detection part 36 is an advanced signal, the suction inlet body control part 40 will drive the rotary cleaning body 20 by normal rotation. On the other hand, if the movement direction signal acquired from the movement direction detection unit 36 is the reverse signal, the suction port body control unit 40 operates the rotary cleaning body 20 in the reverse rotation. At this time, the suction port body controller 40 operates the rotary cleaning body 20 at a predetermined rotational speed R1 in both the forward rotation and the reverse rotation. Moreover, if the suction inlet body control part 40 drive | operates the rotary cleaning body 20, it will maintain the driving | running state and will return to step S11.

  Next, in step S <b> 16, the suction port body control unit 40 continues the operation of the rotary cleaning body 20. At this time, the suction port body control unit 40 operates the rotary cleaning body 20 by forward rotation or reverse rotation. Further, the suction port body control unit 40 operates the rotary cleaning body 20 at a predetermined rotational speed R2 in both the forward rotation and the reverse rotation. The rotational speed R2 of the rotary cleaning body 20 is set larger than the rotational speed R1.

  Next, another example of the cleaning operation of the electric vacuum cleaner 1 according to this embodiment will be described.

  Of the cleaning operation of the electric vacuum cleaner 1, the cleaning operation excluding the case where the suction port 8 is in contact with an obstacle such as a wall surface is the same as the above-described cleaning operation, and will not be described because it is repeated. .

  When the suction port body 15 is brought into contact with an obstacle such as a wall as the suction port body 8 moves forward, the movement direction detection unit 36 detects the stop of the rotation of the front wheel 35 and outputs a stop signal. The wall detector 30 outputs a wall contact signal. Based on the stop signal of the moving direction detection unit 36 and the wall contact signal of the wall detection unit 30, the suction port body control unit 40 determines the time elapsed since the suction port body 8 contacted an obstacle such as a wall surface. If it is within the predetermined time T, the rotational speed of the rotary cleaning body 20 is increased to rotate forward or backward. Then, the rotary cleaning body 20 scoops up dust at the wall.

  That is, when the moving direction detector 36 outputs a forward signal or a backward signal, that is, when the suction port body 8 is traveling, the suction port body control unit 40 moves the rotary cleaning body 20 at the rotational speed R1. Operate in forward or reverse rotation. In addition, when the suction port body 8 is stopped in contact with an obstacle such as a wall surface, the suction port body control unit 40 is within a predetermined time T after the suction port body 8 has come into contact with the wall. If there is, the rotary cleaning body 20 is operated at the rotation speed R2 in the normal rotation or the reverse rotation.

  Therefore, according to the vacuum cleaner 1 which concerns on this embodiment, when the suction inlet body 8 is contact | abutted by the wall and stops, the rotation speed of the rotary cleaning body 20 is increased (rotation speed R2> rotation speed). R1) Dust on the wall can be more reliably removed.

  Furthermore, another example of operation control of the electric motor 24 of the vacuum cleaner 1 will be described.

  FIG. 7 is a flowchart showing another example of operation control of the electric motor of the vacuum cleaner according to the present invention.

  The suction port body control unit 40 is configured so that the moving direction detection unit 36 outputs a stop signal and the wall detection unit 30 outputs a wall surface contact signal, that is, the suction port body 8 comes into contact with an obstacle such as a wall surface. In this case, the rotary cleaning body 20 can be configured to operate by alternately repeating forward rotation and reverse rotation.

  7 is the same as the process from step S1 to step S5 in FIG. 5. The process from step S27 to step S29 in FIG. 6 is the same as that from step S7 to step S9 in FIG. This is the same as the processing, and the description will be repeated, and will be omitted.

  As shown in FIG. 7, in step S <b> 26, the suction port control unit 40 operates the rotary cleaning body 20 by alternately repeating forward rotation and reverse rotation. At this time, the suction port control unit 40 changes the rotation direction of the rotary cleaning body 20 from normal rotation to reverse rotation or from reverse rotation to normal rotation every time shorter than the predetermined time T. If the predetermined time T is about 5 seconds, for example, the rotary cleaning body 20 repeats forward rotation and reverse rotation alternately every about 1 second, for example.

  Next, another example of the cleaning operation of the electric vacuum cleaner 1 according to this embodiment will be described.

  Of the cleaning operation of the electric vacuum cleaner 1, the cleaning operation excluding the case where the suction port 8 is in contact with an obstacle such as a wall surface is the same as the above-described cleaning operation, and will not be described because it is repeated. .

  When the suction port body 15 is brought into contact with an obstacle such as a wall as the suction port body 8 moves forward, the movement direction detection unit 36 detects the stop of the rotation of the front wheel 35 and outputs a stop signal. The wall detector 30 outputs a wall contact signal. Based on the stop signal of the moving direction detection unit 36 and the wall contact signal of the wall detection unit 30, the suction port body control unit 40 determines the time elapsed since the suction port body 8 contacted an obstacle such as a wall surface. If it is within the predetermined time T, the rotary cleaning body 20 is operated by alternately repeating forward rotation and reverse rotation. Then, the rotary cleaning body 20 scoops up dust at the wall.

  That is, the suction port body control unit 40 is configured such that when the moving direction detection unit 36 outputs a stop signal and the wall detection unit 30 outputs a wall surface non-contact signal, that is, the suction port body 8 is not near the wall. When stopped on the cleaning surface, the rotary cleaning body 20 is stopped. On the other hand, when the suction port body 8 stops when the suction port body 8 comes into contact with an obstacle such as a wall surface, the time elapsed since the suction port body 8 contacted the wall is within a predetermined time T. If there is, the rotary cleaning body 20 is operated by repeating forward rotation and reverse rotation alternately.

  Therefore, according to the vacuum cleaner 1 which concerns on this embodiment, when the suction inlet body 8 is contact | abutted by the wall and stops, the rotary cleaning body 20 is drive | operated, repeating forward rotation and reverse rotation alternately. Dust adhering to the wall can be removed more reliably.

  Therefore, according to the vacuum cleaner 1 which concerns on this invention, when the suction inlet body is located by the wall, the dust collected by the wall can be removed.

  The vacuum cleaner according to the present invention is not limited to the canister type vacuum cleaner 1, but may be an upright type, a stick type, or a handy type vacuum cleaner.

The figure which showed the external appearance of the vacuum cleaner which concerns on this invention. The perspective view of the upper surface side of the suction inlet of the vacuum cleaner which concerns on this invention. The perspective view of the lower surface side of the suction inlet of the vacuum cleaner which concerns on this invention. The block diagram of the vacuum cleaner which concerns on this invention. The flowchart which showed the driving | operation control of the electric motor of the vacuum cleaner which concerns on this invention. The flowchart which showed the other example of the operation control of the electric motor of the vacuum cleaner which concerns on this invention. The flowchart which showed the other example of the operation control of the electric motor of the vacuum cleaner which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric vacuum cleaner 2 Vacuum cleaner main body 2a Connection port 3 Dust collection hose 4 Hand operation pipe 5 Grasping part 6 Operation part 6a Off switch 6b Start switch 7 Extension pipe 8 Suction port body 9 Electric blower 11 Power cord 12 Power plug 15 Suction port Main body 16 Connection pipe part 17 Suction opening 18 Suction chamber 20 Rotating cleaning body 21 Rotating shaft 22 Brush bristles 24 Electric motor 25 Timing belt 26 Notch 27 Movable cover 28 Support shaft 30 Wall detection part 31 Rotating connection pipe part 32 Tilt connection pipe part 34 Rear wheel 35 Front wheel 36 Moving direction detector 37 Vacuum cleaner body controller 38 Power supply circuit 40 Suction port controller 41 Switching element

Claims (4)

A suction port body having an opening for sucking dust from the surface to be cleaned;
A rotary cleaning body rotatably provided in the opening;
An electric motor for rotating the rotary cleaning body;
A moving direction detector provided in the suction port,
A wall detector provided in the suction port,
When the moving direction detection unit detects the stop state of the suction port body and the wall detection unit detects that the obstacle and the suction port body are separated from each other, the motor is stopped. On the other hand, when the moving direction detection unit detects the stop state of the suction port body and the wall detection unit detects that the suction port body is in contact with an obstacle, the motor is A vacuum cleaner comprising a control unit that continuously operates. The controller is
When the moving direction detection unit detects the stop state of the suction port body and the wall detection unit detects that the suction port body is in contact with an obstacle, the rotation number of the electric motor is set. The vacuum cleaner according to claim 1, wherein the vacuum cleaner is continuously operated while being increased. The controller is
When the moving direction detection unit detects a stop state of the suction port body and the wall detection unit detects that the suction port body is in contact with an obstacle, the motor is rotated forward and The vacuum cleaner according to claim 1, wherein the vacuum cleaner is operated by alternately repeating reverse rotation. The controller is
When the moving direction detection unit detects the stop state of the suction port body and the wall detection unit detects that the suction port body is in contact with an obstacle, the motor is turned on for a predetermined time. The electric vacuum cleaner according to any one of claims 1 to 3, wherein the electric vacuum cleaner is stopped when elapses.

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