JP6258143B2 - Electric vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner, and more particularly to a method for controlling a mouthpiece.

  There has been proposed an electric vacuum cleaner provided with an automatic mode provided with a detecting means for detecting the condition of the floor surface to be cleaned so that the operation according to the condition of the floor surface can be performed (for example, Patent Document 1 and Patent Document 2).

  Specifically, the fan motor is controlled such that the suction force is strong on carpets with long bristle feet, the suction force is weak on hard floors, and the suction force is halfway between the above and below for carpets with short bristle feet. To do. Similarly, the rotating brush control means stops the rotation of the rotating brush motor on the hard floor surface according to the determination result of the surface to be cleaned determining means, and strongly rotates the rotating brush motor on the carpet having a long bristle to Rotate lightly on carpets with short legs.

JP 2003-290101 A Japanese Patent Laid-Open No. 1993-269066

  However, in the vacuum cleaners described in Patent Document 1 and Patent Document 2, for example, when a carpet is cleaned at night, the suction force is reduced by the surface to be cleaned discriminating means even if it is desired to reduce the suction force in order to reduce noise. May become stronger. Further, when cleaning a wooden floor (flooring), there is much dust on the floor, and even if it is desired to increase the suction force, the suction force may be reduced by the surface to be cleaned discriminating means.

  For such a case, the conventional vacuum cleaner has a manual mode in which the user can select a strong, medium and weak suction force. However, when the manual strong mode is selected, the rotation of the rotary brush motor is strong simultaneously with the suction force. As a result, the rotating brush motor rotates unnecessarily on the wooden floor, which consumes useless power and may increase the noise generated from the mouthpiece. If the manual weak mode is selected, the input of the rotary brush motor becomes weak simultaneously with the suction force, and the rotation of the rotary brush motor is weak on the carpet, so there is a risk that the dust on the carpet cannot be sufficiently separated.

  The present invention determines the floor surface even in the manual mode, and in each of the strong, medium and weak manual modes, by increasing the input of the rotary brush motor in the carpet and by decreasing the input of the rotary brush motor on the wooden floor, An object of the present invention is to provide a vacuum cleaner that can improve the dust collection performance on the carpet in the manual weak mode and reduce the power consumption and noise on the wooden floor in the manual strong mode.

In order to achieve the above object, the present invention comprises an electric blower that generates a suction force, a vacuum cleaner body having a dust collecting part that collects dust, and a suction body connected to the vacuum cleaner body, In the vacuum cleaner provided with the rotary cleaning body which has a rotating shaft parallel to a cleaning surface, the motor which rotationally drives the rotary cleaning body, and the control board which controls the motor, the suction mouth is a drive current of the motor Current detecting means for detecting the motor, means for varying the input of the motor, means for varying the input of the electric blower, and means for allowing a user to set the input mode of the electric blower , the electric blower being strong During operation, intermediate operation, or weak operation, the type of the surface to be cleaned is determined by the current detection means, the motor input is varied according to the type of the surface to be cleaned, and the input of the electric blower is Strange Characterized in that it does not give.

  ADVANTAGE OF THE INVENTION According to this invention, the vacuum cleaner which can improve the dust collection performance on the carpet in manual weak mode, and can reduce the power consumption and noise on a wooden floor in manual strong mode can be provided.

It is an appearance perspective view showing the whole vacuum cleaner concerning the present invention. It is a top view of a mouthpiece. It is a bottom view of a mouthpiece. It is a top view which shows the state which removed the upper case of the suction mouth. It is a functional block diagram of a cleaner body. It is a functional block diagram of an operation tube. It is a functional block diagram of a mouthpiece. It is an enlarged view of hand switch SW. It is a table | surface which shows the electric blower input according to the flooring judgment result in each mode, and a suction body motor input. It is a figure which shows the electric current waveform which flows into a suction body motor in the case where a flooring is a wooden floor, and the case of a carpet. It is a figure which shows the voltage waveform supplied to the electric power feeding terminal of a suction body in the case where a flooring is a wooden floor and a carpet.

  Embodiments according to the present invention will be described below with reference to the drawings as appropriate.

  FIG. 1 shows an external view of a vacuum cleaner according to one embodiment of the present invention. The vacuum cleaner 1 includes a vacuum cleaner body 2, an operation tube 4 connected to the hose portion 3 and provided with a hand operation switch SW and the like, an extendable tube 5 provided to be extendable and a mouthpiece 6. ing.

  The vacuum cleaner body 2 includes an electric blower 2a that generates a suction force, a dust collection portion 2b that stores dust collected by the suction force of the electric blower 2a, and the like. In this embodiment, a so-called cyclonic vacuum cleaner will be described as an example. However, the present embodiment may be applied to a so-called paper pack type vacuum cleaner.

  One end of the hose part 3 is connected to the connection port 2c of the cleaner body 2 so as to communicate with the dust collecting part 2b of the cleaner body 2. Further, the other end of the hose portion 3 is connected to one end of the operation tube 4.

  The operation tube 4 includes a handle 4a provided with a hand operation switch SW and the like, a power supply terminal (not shown) supplied with power from the cleaner body 2, and the like. An energization terminal (not shown) provided at one end of the extension pipe 5 is connected to the power supply terminal.

  By operating the hand control switch SW of the operation tube 4, the electric blower 2 a can be operated and stopped, the suction force can be switched between strong and weak, and the motor 40 (see FIG. 4) provided on the suction body 6 can be operated and stopped. It has become.

  The extension tube 5 includes an outer tube 5a and an inner tube 5b, and one end of the inner tube 5b is inserted into one end of the outer tube 5a. Further, the extension pipe 5 is configured to be extendable by being connected so that a ventilation path (not shown) provided inside the outer pipe 5a and the inner pipe 5b communicates. FIG. 1 illustrates a state in which the extension pipe 5 is shortest.

  FIG. 2 is a top view of the mouthpiece.

  As shown in FIG. 2, the mouthpiece 6 includes a mouthpiece case 10 having a substantially T shape when viewed from above, and a mouthpiece joint 13 connected to the mouthpiece case 10.

  The mouthpiece case 10 includes a mouthpiece body 11 that is elongated in the left-right direction (width direction, the direction of the rotation axis of the first rotary cleaning body 20 to be described later) when viewed from above, and a mouthpiece at the longitudinal center of the mouthpiece body 11. A connecting portion 12 connected to the joint 13 is provided. A flow path R (see FIG. 3) that connects the suction body 11 and the suction joint 13 is formed in the connecting portion 12.

  The mouthpiece main body 11 is provided with a bumper 11a from the front end surface to the left and right side surfaces. The bumper 11a is made of an elastic material such as rubber or elastomer. The bumper 11a keeps the airtightness in the mouthpiece main body 11 when used, and the mouthpiece main body 11 collides with furniture or the like when the vacuum cleaner 1 (see FIG. 1) is used. In doing so, the furniture plays a role of a cushioning material that prevents damage to the mouthpiece body 11 and prevents damage to the furniture.

  The mouthpiece 6 includes a light emitting display means 60 at the center in the longitudinal direction (left-right direction) of the mouthpiece body 11. The light emitting display means 60 is selected by operating the hand operation switch SW of the operation tube 4 or the like, for example, strong, medium and weak states of operation of the electric blower 2a (for example, red for strong operation, orange for medium operation, and weak operation) Display green).

  The suction joint 13 includes a first connecting pipe 14 that is rotatably connected to the connecting portion 12, and a second connecting pipe 15 that is rotatably connected to the first connecting pipe 14. Yes.

  The first connection pipe 14 has a substantially semi-track shape in the top view shown in FIG. 2, and has a cylindrical shaft 14 a having a partially open flow passage connected to the connecting portion 12. The shaft 14 a is supported by a pair of bearing portions 12 g (see FIG. 4) in which the axial direction is the longitudinal direction of the mouthpiece body 11 and both ends of the shaft 14 a are formed in the connecting portion 12. Further, the first connecting pipe 14 is configured to be rotatable from a substantially parallel state to a substantially vertical state (up and down direction) with respect to the floor surface (cleaning surface). That is, by rotating the first connection pipe 14 with respect to the suction case 10 with the shaft 14a as a fulcrum, the extension pipe 5 can be rotated between a state substantially parallel to the floor surface and a state substantially vertical. it can.

  The second connection pipe 15 is configured to be rotatable with respect to the first connection pipe 14 in the longitudinal direction (clockwise and counterclockwise in FIG. 2). Thereby, for example, the extension pipe 5 can be brought down to a state substantially parallel to the floor surface from a state where the extension pipe 5 is substantially perpendicular to the floor surface.

  The second connection pipe 15 is provided with power supply terminals 15a and 15b for supplying power. In addition, in the vacuum cleaner 1 (refer FIG. 1) of this embodiment example, it is comprised so that the electric power supplied to the suction body 6 may be supplied from the cleaner body 2 through the hose part 3, the operation tube 4, and the extension tube 5. ing.

  Such a suction joint 13 is, for example, capable of tilting the extension pipe 5 in the left-right direction (longitudinal direction) in a state where the extension pipe 5 (see FIG. 1) is substantially perpendicular to the floor surface. 4 (grip 4a) is rotated clockwise or counterclockwise to rotate the mouthpiece body 11 approximately 90 degrees clockwise or counterclockwise, and cleaning with the longitudinal direction of the mouthpiece body 11 in the moving direction is performed. Is possible. Therefore, it is possible to clean by moving the mouthpiece 6 along the wall or inserting the mouthpiece 6 into a narrow gap.

  FIG. 3 is a bottom view of the mouthpiece.

  As shown in FIG. 3, the mouthpiece 6 includes a first rotary cleaning body 20 and a plurality of second rotary cleaning bodies 30. The suction case 10 (suction body 11) is formed with a suction chamber Q having an opening on the lower surface (the surface facing the cleaning surface).

  The first rotary cleaning body 20 is arranged on the front side of the connecting portion 12 in the front-rear direction along the longitudinal direction (left-right direction) of the suction body 11 and is rotatably supported by the suction body 11.

  The first rotary cleaning body 20 includes a plurality of types of brushes 20a, 20b, and 20c such as brush bodies and elastic bodies having different wire diameters, densities, and hardnesses. It is arranged in a spiral shape. In the present embodiment, the case where three types of brushes 20a, 20b, and 20c are provided has been described as an example. However, the present invention is not limited to this and may be two or less types. There may be more types, and a configuration in which a blade member made of an elastic material such as rubber is spirally arranged between spirally arranged brushes may be added and can be changed as appropriate.

  The second rotary cleaning body 30 has a brush body 30 b having a diameter smaller than the diameter of the first rotary cleaning body 20, and is disposed rearward and parallel to the first rotary cleaning body 20. Further, the second rotary cleaning body 30 is provided continuously from one end side to the other end side in the axial direction of the first rotary cleaning body 20 (longitudinal direction of the suction body 11). In other words, the second rotary cleaning body 30 is configured by one brush body 30b.

  Moreover, the 2nd rotary cleaning body 30 has the axial part 30a (shaft) parallel to the rotating shaft 21 of the 1st rotary cleaning body 20, and the axial part 30a is rotatably supported by the suction case 10 (suction body 11). Has been. In addition, the 2nd rotation cleaning body 30 is not driven by a motor, but is comprised so that it may rotate with the frictional force with a floor surface when the suction body 6 is moved. Thus, since the 2nd rotary cleaning body 30 is not driven by a motor but is supported by the suction mouth main body 11 via the axial part 30a, the structure of the 2nd rotary cleaning body 30 is simplified. be able to.

  In addition, the suction case 10 is provided with a brush drive switch 16 on the lower surface of the connection portion 12 of the suction case 10, and a wheel 17 is provided behind the brush drive switch 16 (the rear end of the connection portion 12).

  The brush drive switch 16 is a switch that detects whether or not the lower surface of the mouthpiece 6 is in contact with the cleaning surface (floor surface). The brush drive switch 16 includes a wheel 16a, and the wheel 16a is provided so as to always protrude from the lower surface of the suction case 10 (connecting portion 12) by a biasing means such as a spring. When it is detected that the wheel 16a has popped out and is not in contact with the floor surface, the drive of the motor 40 is stopped by a circuit board 50 (control board) described later. In addition, when it is detected that the wheel 16 a is pushed in and in contact with the floor surface, the motor 40 is driven by the circuit board 50.

  The wheel 17 has a role of improving the operating performance of the mouthpiece 6 by contacting the bottom surface of the mouthpiece 6 with the cleaning surface in response to the stress of the forward and backward movement and rotation operated by the operation tube 4. .

  FIG. 4 is a top view showing a state where the upper case 11 of the mouthpiece is removed.

  As shown in FIG. 4, the suction body 6 includes a motor 40 that drives the first rotary cleaning body 20 and a circuit board 50 that controls the motor 40 above the first rotary cleaning body 20 and the second rotary cleaning body 30. I have.

  The motor 40 is attached to the left end side of the suction body 11 in the longitudinal direction. Further, the output shaft of the motor 40 is arranged in parallel with the longitudinal direction of the inlet body 11. Further, the output shaft of the motor 40 extends toward the left end side in the longitudinal direction, and is connected to the first rotary cleaning body 20 via the toothed belt 41 at the left end portion (left end portion in the drawing) in the mouthpiece body 11. Has been.

  The circuit board 50 is attached to the right end side of the suction body 11 in the longitudinal direction. Further, the circuit board 50 is formed of a rectangular board arranged with the long side facing the longitudinal direction, and is arranged in the mouthpiece body 11 so that the mounting surface 50a faces upward in the vertical direction. The mounting surface 50a is not necessarily limited to the one that faces upward in the vertical direction, and may be inclined with respect to the horizontal direction or may be directed in the front-rear direction (vertically).

  FIG. 5 shows a functional block diagram of the vacuum cleaner body 2 of the vacuum cleaner according to the present embodiment. In FIG. 5, 61 is a vacuum cleaner main body control board, 62 is a power plug, 64 is a bidirectional thyristor for controlling the input of the electric blower 2a, and 65 is for controlling the input of the motor 40 for driving the rotary brush 20 of the suction body. Bidirectional thyristor, 66 is a current detection circuit for detecting the current of the rotary brush drive motor, 67 is a voltage detection circuit for detecting input information of the hand switch SW, and 68 is a DC power supply circuit for converting AC 100V into a low voltage DC voltage. 69 is a polarity detection circuit for detecting the polarity and zero cross of the AC power source, and 70 is a microcomputer for controlling the whole.

  FIG. 6 shows a functional block diagram of the operation tube 4 of the vacuum cleaner according to this embodiment. In FIG. 6, reference numeral 71 is a hand control board, and 72 to 75 are hand switch input circuits.

  FIG. 7 shows a functional block diagram of the mouthpiece 6 of the vacuum cleaner according to this embodiment. In FIG. 7, 80G is a green light emitting LED, 80R is a red light emitting LED, 81 is a driving circuit for the green light emitting LED 80G, 82 is a driving circuit for the red light emitting LED 80R, 83 is a power supply circuit for supplying power to the green light emitting LED 80G and the red light emitting LED 80R. , 84 is a half-wave rectifier circuit that passes only the positive component of the AC power supplied between the mouthpiece power supply line PB and COM (between the power supply terminals 15a and 15b), and 85 divides the half-wave rectified voltage. A voltage dividing circuit 86 is a smoothing circuit that smoothes the divided voltage, and 87 is a circuit that compares the smoothed voltage with a preset reference voltage, and compares the driving circuit 81 for the green light emitting LED 80G and the driving circuit 82 for the red light emitting LED 80R. It is a voltage comparison circuit that starts either one or both simultaneously.

  FIG. 8 shows an enlarged view of the hand switch SW of the vacuum cleaner according to this embodiment. In FIG. 8, 75 is a switch, 74 is an automatic mode selection switch, 73 is a (manual high / manual / manual weak) mode selection switch, and 72 is a switch / on switch for the mouthpiece motor 40.

  FIG. 9 shows the electric blower input and the suction body motor input for each mode of the vacuum cleaner according to the present embodiment, according to the floor material judgment result.

  FIG. 10 shows a current waveform flowing through the mouthpiece motor 40 when the flooring material is a wooden floor and a carpet in the vacuum cleaner according to this embodiment.

  FIG. 11 shows that the vacuum cleaner according to the present embodiment is supplied to the power feeding terminals 15a and 15b of the mouthpiece 6 in the (manual strong / manual / manual weak) mode when the flooring is a wooden floor and a carpet. Shows the voltage waveform.

  Hereinafter, the operation of the embodiment according to the present invention will be described in detail with reference to the drawings.

  When the vacuum cleaner user operates the hand switch SW disposed near the hand handle 4, the electric blower 2a in the main body 2 of the vacuum cleaner operates in an operation mode according to the operated switch. The suction force generated by the electric blower reaches the mouthpiece 6 through the hose portion 3 and the extension pipe 5. At the same time, the power supplied from the power supply line provided in the hose portion 3 and the extension pipe 5 drives the motor 40 via the power supply terminal 15a. Thereby, the 1st rotation cleaning body 20 rotates.

  When the vacuum cleaner user selects the manual high mode by operating the (manual high / manual / manual low) mode selection switch 74 with the hand switch SW, the microcomputer 70 causes the voltage detection circuit 67 to execute the manual high mode. Detect that is selected. The microcomputer 70 controls the bidirectional thyristor 64 to drive the electric blower 2a with 100% input. Further, the microcomputer 70 controls the bidirectional thyristor 65 to drive the motor 40 with 100% input (ignited at a phase angle of 0 ° and a phase angle of 180 °). In the mouthpiece 6, the half-wave rectifier circuit 84 shown in FIG. 7 passes only the positive polarity component of the voltage supplied to the power supply terminals 15 a and 15 b. The voltage comparison circuit 87 detects that the positive component of the voltage is 100% input by comparing the voltage output by the voltage dividing circuit 85 and the voltage smoothing circuit with a predetermined reference voltage, The drive circuit 82 is driven to cause the red light emitting LED 80R to emit light. This light emission can be recognized from the outside of the mouthpiece 6 by the light emission display means 70 at the center of the mouthpiece body 11, and the vacuum cleaner user can confirm that the electric blower 2a is in strong operation.

  At this time, the current detection circuit detects the current flowing through the motor 40. As shown in FIG. 10, when the amplitude of the current flowing through the motor 40 is small, the microcomputer 70 determines that the flooring is a wooden floor, and when the voltage is negative as shown in FIG. Only when the phase angle is 225 °, the bidirectional thyristor 65 is fired. Thereby, the input of the motor 40 becomes about 92.5%, and the rotation speed of the 1st rotary cleaning body 20 falls. Thereby, the power consumption of the motor 40 can be suppressed. Moreover, the noise of the mouthpiece can also be suppressed.

  At this time, since the positive polarity component of the voltage supplied to the power supply terminals 15a and 15b does not change, the color of the light emitting display means 60 does not change. Thus, by changing the ignition only when the voltage is negative, the input of the motor 40 can be changed without changing the color of the light emitting display means 60.

  When the vacuum cleaner user selects the manual medium mode by operating the (manual high / manual / manual weak) mode selection switch 74 with the hand switch SW, the microcomputer 70 causes the voltage detection circuit 67 to select the manual medium mode. Detect that is selected. The microcomputer 70 controls the bidirectional thyristor 64 to drive the electric blower 2a with an input of about 70%. Furthermore, the microcomputer 70 controls the bidirectional thyristor 65 to drive the motor 40 with an input of about 85% (fired at a phase angle of 45 ° and a phase angle of 225 °). The half-wave rectifier circuit 84 shown in FIG. 7 passes only the positive polarity component of the voltage supplied to the power supply terminals 15a and 15b. The voltage comparison circuit 87 detects that the positive polarity component of the voltage is about 85% input by comparing the voltage output by the voltage dividing circuit 85 and the voltage smoothing circuit with a predetermined reference voltage. Then, the drive circuit 82 and the drive circuit 81 are driven to cause the red light emitting LED 80R and the green light emitting LED 80G to emit light. This light emission can be recognized from the outside of the mouthpiece 6 by the light emission display means 60 at the center of the mouthpiece body 11, and the cleaner user can confirm that the electric blower 2a is in the middle operation.

  At this time, the current detection circuit detects the current flowing through the motor 40. When the amplitude of the current flowing through the motor 40 is small, the microcomputer 70 determines that the flooring is a wooden floor, and has a phase angle of 270 ° only when the voltage is negative as shown in FIG. Sometimes the bidirectional thyristor 65 is fired. Thereby, the input of the motor 40 becomes about 67.5%, and the rotation speed of the 1st rotary cleaning body 20 falls. Thereby, the power consumption of the motor 40 can be suppressed. Moreover, the noise of the mouthpiece can also be suppressed.

  At this time, since the positive polarity component of the voltage supplied to the power supply terminals 15a and 15b does not change, the color of the light emitting display means 60 does not change. Thus, by changing the ignition only when the voltage is negative, the input of the motor 40 can be changed without changing the color of the light emitting display means 60.

  When the vacuum cleaner user selects the manual weak mode by operating the (manual high / manual / manual weak) mode selection switch 74 with the hand switch SW, the microcomputer 70 causes the voltage detection circuit 67 to operate the manual weak mode. Detect that is selected. The microcomputer 70 controls the bidirectional thyristor 64 to drive the electric blower 2a with an input of about 25%. Further, the microcomputer 70 controls the bidirectional thyristor 65 to drive the motor 40 with an input of about 50% (fired at a phase angle of 90 ° and a phase angle of 270 °). The half-wave rectifier circuit 84 shown in FIG. 7 passes only the positive polarity component of the voltage supplied to the power supply terminals 15a and 15b. The voltage comparison circuit 87 detects that the positive component of the voltage is about 50% input by comparing the voltage output by the voltage dividing circuit 85 and the voltage smoothing circuit with a predetermined reference voltage. Then, the drive circuit 81 is driven to cause the green light emitting LED 80G to emit light. This light emission can be recognized from the outside of the mouthpiece 6 by the light emission display means 70 at the center of the mouthpiece body 11, and the vacuum cleaner user can confirm that the electric blower 2a is in a weak operation.

  At this time, the current detection circuit detects the current flowing through the motor 40. When the amplitude of the current flowing through the motor 40 is small, the microcomputer 70 determines that the flooring is a wooden floor and has a phase angle of 315 ° only when the voltage is negative as shown in FIG. Sometimes the bidirectional thyristor 65 is fired. Thereby, the input of the motor 40 becomes about 32.5%, and the rotation speed of the 1st rotary cleaning body 20 falls. Thereby, the power consumption of the motor 40 can be suppressed. Moreover, the noise of the mouthpiece can also be suppressed.

  At this time, since the positive polarity component of the voltage supplied to the power supply terminals 15a and 15b does not change, the color of the light emitting display means 60 does not change. Thus, by changing the ignition only when the voltage is negative, the input of the motor 40 can be changed without changing the color of the light emitting display means 60.

  Further, when the user of the vacuum cleaner shifts to cleaning the carpet, as shown in FIG. 10, the microcomputer 70 detects that the amplitude of the current flowing through the motor 40 has increased, and the flooring is carpeted. As shown in FIG. 11E, the bidirectional thyristor 65 is fired at the phase angle of 270 ° only when the voltage is negative. Thereby, the input of the motor 40 becomes about 50%, the rotation speed of the 1st rotary cleaning body 20 rises, and the dust collection performance on a carpet improves.

  As described above, according to the present embodiment, there is an effect that the dust collecting performance on the carpet in the manual weak mode can be improved and the power consumption and noise on the wooden floor can be reduced in the manual strong mode.

  Further, according to the present embodiment, in order to change the color of the light emitting display means provided on the suction body, the signal supply wire is provided in the hose portion 3 and the extension pipe 5 separately from the suction body power supply lines PB and COM. Since there is no need to connect the vacuum cleaner body and the suction body electrically, the cost and weight of the hose portion 3 and the extension pipe 5 are not increased.

  Further, according to the present embodiment, there is an effect that the input of the motor can be changed without changing the color of the light emitting display means.

DESCRIPTION OF SYMBOLS 1 Electric vacuum cleaner 2 Vacuum cleaner main body 2a Electric blower 2b Dust collection part 6 Suction body 10 Suction case 20 1st rotation cleaning body 30 2nd rotation cleaning body 40 Motor 50 Circuit board (control board)
Q Suction chamber 60 Luminescent display means 61 Vacuum cleaner body control board 64, 65 Bidirectional thyristor 66 Current detection circuit 67 Voltage detection circuit 69 Polarity detection circuit 70 Microcomputer 80G Green light emitting LED
80R Red LED
81, 82 LED drive circuit 84 Half-wave rectifier circuit 85 Voltage divider circuit 86 Smoothing circuit 87 Voltage comparison circuit

Claims (5)

An electric blower that generates a suction force, a vacuum cleaner main body having a dust collecting portion that collects dust, and a suction body connected to the vacuum cleaner main body, the suction body having a rotation axis parallel to the cleaning surface In a vacuum cleaner comprising: a rotary cleaning body having: a motor that rotationally drives the rotary cleaning body; and a control board that controls the motor.
Current detection means for detecting the drive current of the motor;
Means for varying the input of the motor;
Means for varying the input of the electric blower;
Means for allowing a user to set the input mode of the electric blower;
When the electric blower is in a strong operation, a medium operation or a weak operation, the type of the surface to be cleaned is determined by the current detection means, the input of the motor is varied according to the type of the surface to be cleaned, and The vacuum cleaner characterized by not changing the input of an electric blower.   The vacuum cleaner according to claim 1, wherein the suction body is provided with display means corresponding to the input level of the electric blower.   The electric vacuum cleaner according to claim 2, wherein the display means determines the magnitude of the input of the electric blower based on a power supply voltage supplied to the suction body.   2. The electric vacuum cleaner according to claim 1, wherein the means for changing the input of the motor ignites at different phase angles with positive polarity and negative polarity among the power supplied to the suction body.   3. The electricity according to claim 2, wherein the display means detects only the voltage of one polarity among the power supply voltages supplied to the suction body, and determines the magnitude of the input of the electric blower. Vacuum cleaner.