JP2020065851A - Vacuum cleaner - Google Patents

Abstract

To provide a vacuum cleaner that can secure long operation time while securing sufficient dust collection performance.SOLUTION: The vacuum cleaner according to an embodiment comprises an electric air blower, a rotary brush, a brush motor, a secondary battery, a detection unit, and a control unit. The rotary brush is provided in a suction port, and along a floor surface. The brush motor drives the rotary brush. The secondary battery supplies electric power to the electric air blower and the brush motor. The detection unit detects a value related to input electric power input to the brush motor. The control unit changes the magnitude of the input electric power input to the brush motor on the basis of a detection result of the detection unit, and changing of the magnitude of input electric power input to the electric air blower depending on changing the magnitude of the input electric power input to the brush motor.SELECTED DRAWING: Figure 2

Description

  Embodiments of the present invention relate to a vacuum cleaner.

  BACKGROUND ART Conventionally, there is known an electric vacuum cleaner including a cleaner main body having an electric blower mounted therein and a suction port body having a rotating brush mounted therein. In recent years, such vacuum cleaners have a built-in secondary battery and are becoming more cordless. It is expected that such an electric vacuum cleaner can ensure a long operation time while ensuring sufficient dust collecting performance.

JP 2006-169A

  The problem to be solved by the present invention is to provide an electric vacuum cleaner capable of ensuring a long operation time while ensuring sufficient dust collecting performance.

  The electric vacuum cleaner of the embodiment has an electric blower, a rotating brush, a brush motor, a secondary battery, a detection unit, and a control unit. The rotating brush is provided at the suction port and extends along the floor surface. The brush motor drives the rotary brush. The secondary battery supplies electric power to the electric blower and the brush motor. The detection unit detects a value related to input power input to the brush motor. The control unit changes the magnitude of the input power input to the brush motor based on the detection result of the detection unit, and the electric blower according to the magnitude of the input power input to the brush motor. Change the amount of input power input to.

The perspective view which shows an example of the vacuum cleaner of embodiment. The circuit block diagram which shows an example of a part of circuit structure of the vacuum cleaner of embodiment. The figure for demonstrating the content of the "flooring mode" and "carpet mode" of embodiment. The figure for demonstrating a concrete example of a "flooring mode" and a "carpet mode" of an embodiment. 3 is a flowchart showing an example of the flow of processing performed by the control unit of the embodiment. The figure for demonstrating the content of the "flooring mode" and the "carpet mode" of the 1st modification of embodiment. The figure for demonstrating the content of the operation mode of the 2nd modification of embodiment.

  Hereinafter, the vacuum cleaner of the embodiment will be described with reference to the drawings. In the following description, configurations having the same or similar functions are designated by the same reference numerals. Then, the overlapping description of those configurations may be omitted. As used herein, the term “based on XX” means “based on at least XX” and includes the case based on another element in addition to XX. Further, "based on XX" is not limited to the case where XX is directly used, but also includes the case where based on the calculation or processing performed on XX. “XX” is an arbitrary element (for example, arbitrary information).

  FIG. 1 is a perspective view showing an example of the electric vacuum cleaner 1 of the embodiment. The vacuum cleaner 1 of the present embodiment is, for example, a so-called stick-type vacuum cleaner, and is a cordless-type vacuum cleaner having a built-in secondary battery. However, the electric vacuum cleaner 1 is not limited to the above example, and may be a canister type having a cleaner main body including wheels or an electric vacuum cleaner of another type.

  The electric vacuum cleaner 1 includes, for example, a cleaner body 10, an extension tube 20, and a suction port body (floor brush) 30.

  First, the cleaner body 10 will be described. The cleaner body 10 includes, for example, a body case 11, a grip portion 12, a dust collector 13, a dust sensor 14 (see FIG. 2), an electric blower 15, a secondary battery 16, and a body controller 17.

  The body case 11 forms an outer shell of the cleaner body 10. A dust sensor 14, an electric blower 15, a secondary battery 16, and a main body control unit 17 are housed in the main body case 11. Further, the main body case 11 has an extension pipe connecting portion 18 to which one end of an extension pipe 20 described later is connected.

  The grip portion 12 is provided at the upper rear end portion of the main body case 11. The grip portion 12 is a portion gripped by a user when cleaning the floor surface (surface to be cleaned). In the present specification, the front-rear direction, the up-down direction, and the left-right direction are defined with reference to a state in which the gripping portion 12 is gripped by the user and the floor surface is cleaned. Specifically, the direction indicated by arrow U shown in FIG. 1 is upward, the direction indicated by arrow D is downward, the direction indicated by arrow FR is forward, the direction indicated by arrow RR is backward, and the direction indicated by arrow L is. The pointing direction is defined as the left direction, and the direction indicated by the arrow R is defined as the right direction.

  The grip portion 12 is provided with a setting button 19 as an operating unit for operating the operations of the electric blower 15 and a rotary brush 33 described later. The setting button 19 is, for example, a start button for starting the use of the electric vacuum cleaner 1, an end button for ending the use of the electric vacuum cleaner 1, a mode switching button for switching the operation mode of the electric vacuum cleaner 1, and the like. including. The operation mode (operation mode) of the electric vacuum cleaner 1 can be switched between, for example, a “strong mode” and an “automatic mode”. The "strong mode" is a mode in which the electric blower 15 and the rotary brush 33 are rotated at high speeds, and the operating time of the electric vacuum cleaner 1 is short, but the cleaning capacity is maximum. On the other hand, the "automatic mode" is an operation mode in which a long operation time can be ensured while ensuring sufficient dust collection performance. The control contents of the "automatic mode" will be described later. The “automatic mode” may be referred to as an “eco mode” or a “recommended mode”.

  The dust collector 13 is attached to the main body case 11. The dust collector 13 is a device that separates dust contained in the air sucked into the cleaner body 10 by the operation of the electric blower 15 described later. For example, the dust collecting device 13 is a multi-stage centrifugal separation type dust collecting device including a first separating portion, a second separating portion, and a filter body. The first separating unit centrifuges (cyclone-separates) relatively large coarse dust from air. The second separating unit centrifuges (cyclone separates) fine dust (fine dust), which is relatively small dust that cannot be separated by the first separating unit, from air. The filter body separates (filters and separates) a small amount of dust contained in the air that has passed through the second separation unit.

  The dust sensor 14 is provided in the intake air passage portion formed between the extension pipe connection portion 18 and the dust collector 13. The dust sensor 14 detects the amount of dust in the dust-containing air sucked into the dust collector 13. The dust sensor 14 includes, for example, a light emitting unit and a light receiving unit, and detects the amount of dust passing between the light emitting unit and the light receiving unit based on the amount of light received by the light receiving unit with respect to the amount of light emitted from the light emitting unit. The detection result of the dust sensor 14 is output to the main body control unit 17.

  The electric blower 15 includes a motor called a fan motor or a main motor, and is driven to generate a negative pressure. The electric blower 15 sucks the dust-containing air from the suction port 37 of the suction port body 30 described later into the dust collector 13 by the generated negative pressure, and cools the air from which dust is separated by the dust collector 13 by itself. Then exhaust. The motor of the electric blower 15 is, for example, a DC motor, but is not limited to this.

  The secondary battery 16 is a power supply unit that supplies electric power to the electric blower 15 and a brush motor 34 described later. The secondary battery 16 is a battery pack in which a plurality of batteries are connected in series or in parallel. The electric vacuum cleaner 1 can be used by being supplied with power from the secondary battery 16. The secondary battery 16 receives power from the supporting device when the cleaning device 1 is not used, for example, when the cleaning device 1 is attached to a supporting device (not shown) whose power cord is connected to an outlet. Will be charged.

  The main body control unit 17 includes, for example, an electric blower control unit 40 (see FIG. 2) that controls the electric blower 15 and a charging control unit (not shown) that controls charging of the secondary battery 16. The main body control unit 17 is realized by, for example, a circuit board including a microcomputer. The function of the electric blower control unit 40 will be described later.

  Next, the extension pipe 20 will be described. The extension pipe 20 is formed, for example, in an elongated shape, and has a first end portion 21 and a second end portion 22. The first end 21 of the extension pipe 20 is hermetically connected to the extension pipe connection portion 18 of the cleaner body 10. The second end 22 of the extension tube 20 is airtightly connected to the suction port body 30. Inside the extension pipe 20, connection wiring is provided for electrically connecting the cleaner body 10 and the suction port body 30.

  Next, the suction port body 30 will be described. The suction port body 30 is a portion that is moved along the floor surface. The suction port body 30 includes, for example, a suction port body case 31, a connection pipe 32, a rotating brush 33, a brush motor 34, a current detection unit 35 (see FIG. 2), and a motor control unit 36.

  The suction port body case 31 is horizontally long, that is, formed in a longitudinal shape in the left-right direction. A brush motor 34, a current detector 35, and a motor controller 36 are housed in the suction port case 31. Further, the suction port body case 31 has a suction port 37 at a lower portion facing the floor surface. The suction port 37 is an opening for sucking dust on the floor surface when the electric blower 15 is driven.

  The connection pipe 32 is a portion for connecting the suction port body case 31 and the second end portion 22 of the extension pipe 20, and is rotatably connected to the suction port body case 31. By connecting the suction port body case 31 and the extension pipe 20 with the connection pipe 32, an air path from the suction port 37 of the suction port body case 31 to the cleaner body 10 via the extension pipe 20 is formed. .

  The rotating brush 33 is provided in the suction port 37 and is arranged along the floor surface. The rotating brush 33 is rotatably provided with respect to the suction port case 31. The rotating brush 33 has a function of floating dust from the floor surface, or making hair tips of a carpet or the like stand.

  The brush motor 34 is mechanically connected to the rotary brush 33 via a rotary drive mechanism (not shown), and drives (rotates) the rotary brush 33. The brush motor 34 is, for example, a DC motor, but is not limited to this.

  The current detector 35 detects the value of the input current (load current) input to the brush motor 34. For example, the current detector 35 detects the current waveform of the input current at a predetermined cycle of 1 msec or less. The current detector 35 outputs a detection result regarding the value of the input current input to the brush motor 34 to the motor controller 36. The current detector 35 is an example of a “detector”. The “value of the input current input to the brush motor 34” is an example of the “value of the input power input to the brush motor”. However, the “value relating to the input power input to the brush motor” is not limited to the current value, and may be the power value or the voltage value. Therefore, the “detection unit” is not limited to the current detection unit, but may be a voltage detection unit that detects the voltage value of the input power input to the brush motor 34 (for example, the terminal voltage of the secondary battery 16) or the current detection unit. It may be a functional unit including both the detection unit and the voltage detection unit.

  The motor control unit 36 includes a control circuit that controls the brush motor 34. The motor control unit 36 is realized by, for example, a circuit board including a microcomputer. The function of the motor control unit 36 will be described later. In the present embodiment, the main body control unit 17 of the cleaner body 10 and the motor control unit 36 of the suction port body 30 constitute an example of a “control unit”. The motor control unit 36 may be provided in the cleaner body 10 instead of the suction port body 30. At this time, the motor control unit 36 and the main body control unit 17 may be realized by one circuit board.

  Next, the circuit configuration of the electric vacuum cleaner 1 will be described. In the following, an example will be described in which control of the rotational speeds of the electric blower 15 and the brush motor 34 is realized by increasing or decreasing the magnitude of the input current to the electric blower 15 and the brush motor 34. However, the control of the electric blower 15 and the brush motor 34 may be realized by increasing or decreasing the magnitude of the voltage of the input power to the electric blower 15 and the brush motor 34. Therefore, “current” in the following description can be read as “voltage” as appropriate.

  FIG. 2 is a circuit configuration diagram showing an example of a part of the circuit configuration of the electric vacuum cleaner 1 of the embodiment. The electric vacuum cleaner 1 includes, for example, an electric blower control circuit C1 and a motor control circuit C2.

  First, the electric blower control circuit C1 will be described. The electric blower control circuit C1 includes, for example, a first switching unit 41, an electric blower 15, and an electric blower controller 40. The first switching unit 41 and the electric blower 15 are connected in series with the secondary battery 16.

  The first switching unit 41 includes one or more semiconductor switching elements. By closing the first switching unit 41, electric power is supplied from the secondary battery 16 to the electric blower 15. On the other hand, by opening the first switching unit 41, the supply of electric power from the secondary battery 16 to the electric blower 15 is stopped. The ON / OFF control of the first switching unit 41 is performed in a predetermined cycle, so that the pulsed input power is supplied from the secondary battery 16 to the electric blower 15.

  The electric blower control unit 40 switches the ON / OFF timing of the first switching unit 41 based on, for example, a user operation received by the setting button 19, so that the input supplied from the secondary battery 16 to the electric blower 15 is changed. Change the power duty ratio. The electric blower control unit 40 changes the drive state of the electric blower 15 by changing the duty ratio of the input power supplied to the electric blower 15. For example, the electric blower control unit 40 increases the rotation speed of the electric blower 15 by increasing the duty ratio of the input electric power supplied to the electric blower 15 (that is, increasing the input electric power). On the other hand, the electric blower control unit 40 reduces the rotation speed of the electric blower 15 by reducing the duty ratio of the input power supplied to the electric blower 15 (that is, reducing the input power).

  Next, the motor control circuit C2 will be described. The motor control circuit C2 includes a second switching unit 42, a brush motor 34, a current detector 35, and a motor controller 36. The second switching unit 42, the brush motor 34, and the current detector 35 are connected in series to the secondary battery 16.

  The second switching unit 42 includes one or more semiconductor switching elements. By closing the second switching unit 42, electric power is supplied from the secondary battery 16 to the brush motor 34. On the other hand, the opening of the second switching unit 42 stops the supply of electric power from the secondary battery 16 to the brush motor 34. The second switching unit 42 is ON / OFF-controlled in a predetermined cycle, so that pulsed input power is supplied from the secondary battery 16 to the brush motor 34.

  The motor control unit 36 switches the ON / OFF timing of the second switching unit 42 based on, for example, the operation of the user accepted by the setting button 19, so that the input power supplied from the secondary battery 16 to the brush motor 34. Change the duty ratio of. The motor control unit 36 changes the drive state of the brush motor 34 by changing the duty ratio of the input power supplied to the brush motor 34. For example, the motor control unit 36 increases the rotation speed of the brush motor 34 by increasing the duty ratio of the input power supplied to the brush motor 34 (that is, increasing the input power). On the other hand, the motor control unit 36 reduces the rotation speed of the brush motor 34 by reducing the duty ratio of the input power supplied to the brush motor 34 (that is, reducing the input power). In the present embodiment, the motor control unit 36 outputs a signal regarding the drive state of the brush motor 34 to the electric blower control unit 40.

  Further, the motor control unit 36 can determine the type of floor surface being cleaned by the electric vacuum cleaner 1 based on the detection result of the current detection unit 35. In the present embodiment, the motor control unit 36, based on the detection result of the current detection unit 35, the floor surface type being cleaned by the electric vacuum cleaner 1 is the first type floor surface corresponding to flooring, tatami mat, or the like. Or a second type floor surface corresponding to the carpet is determined. For example, the motor control unit 36 makes the determination based on the value of the peak current included in the current waveform of the input current input to the brush motor 34, which is detected in the predetermined cycle.

  For example, the motor control unit 36 rotates the brush motor 34 at a predetermined rotation speed (initial rotation speed) arbitrarily set in advance, and the current detection unit 35 detects the rotation speed at the predetermined rotation speed. Get the result. Then, the motor control unit 36 determines that the electric vacuum cleaner 1 is cleaning the floor surface of the first type when the current value flowing through the brush motor 34 detected by the current detection unit 35 is less than the first threshold value. To do. On the other hand, the motor controller 36 determines that the electric vacuum cleaner 1 is cleaning the floor surface of the second type when the value of the current flowing through the brush motor 34 detected by the current detector 35 is not less than the first threshold value. judge. This is because when the floor surface is a carpet or the like, the resistance applied to the rotating brush 33 is larger and the current value of the current supplied to the brush motor 34 is larger than when the floor surface is a floor or a tatami mat. This is because.

  Further, the motor control unit 36 monitors the fluctuation of the current value flowing in the brush motor 34, and when the current value flowing in the brush motor 34 suddenly increases beyond the second threshold value (for example, the current per unit time of detection). It is determined that the vacuum cleaner 1 moves from the floor surface of the first type to the floor surface of the second type and the floor surface of the second type is being cleaned when the increment of the value is equal to or more than the second threshold value). . On the other hand, when the value of the current flowing through the brush motor 34 suddenly drops below the second threshold value (for example, when the width of decrease in the current value per unit time of detection is equal to or greater than the second threshold value), the motor control unit 36. First, it is determined that the electric vacuum cleaner 1 has moved from the floor surface of the second type to the floor surface of the first type and is cleaning the floor surface of the first type.

  Next, the content of the “automatic mode” which is one of the operation modes of the electric vacuum cleaner 1 will be described in detail. Hereinafter, the electric blower control unit 40 and the motor control unit 36 may be collectively referred to as a “control unit 50”. Further, in the following, for convenience of description, an operation mode suitable for cleaning the first type floor surface is referred to as “flooring mode”, and an operation mode suitable for cleaning the second type floor surface is referred to as “carpet mode”. To call. The "flooring mode" is an example of the "first mode". The “carpet mode” is an example of the “second mode”.

  In the present embodiment, when the electric vacuum cleaner 1 is operated in the “automatic mode”, the control unit 50 performs electric cleaning between the “flooring mode” and the “carpet mode” based on the detection result of the current detection unit 35. The operation mode of the machine 1 is automatically switched. For example, when the motor control unit 36 determines that the floor surface of the first type is being cleaned, the control unit 50 switches the operation mode of the electric vacuum cleaner to the “flooring mode”. On the other hand, when the motor control unit 36 determines that the second type floor surface is being cleaned, the control unit 50 switches the operation mode of the electric vacuum cleaner to the “carpet mode”.

  FIG. 3 is a diagram for explaining the contents of the “flooring mode” and the “carpet mode”. In the “flooring mode”, the control unit 50 causes the brush motor 34 to input the first input power and the electric blower 15 to input the second input power. For example, the magnitude of the second input power is larger than the magnitude of the first input power. That is, the “flooring mode” is an operation mode in which electric power is supplied to the electric blower 15 higher than that of the brush motor 34, and the electric blower 15 is used with priority over the brush motor 34.

  On the other hand, in the “carpet mode”, the control unit 50 causes the brush motor 34 to input the third input power larger than the first input power, and the electric blower 15 receives the fourth input power smaller than the second input power. Input. That is, the “carpet mode” is an operation mode in which the brush motor 34 is supplied with more electric power than the electric blower 15 and the brush motor 34 is used with priority over the electric blower 15.

  In the present embodiment, the control unit 50 causes the difference between the total value of the first input power and the second input power and the total value of the third input power and the fourth input power to fall within a predetermined range. , The first input power, the second input power, the third input power, and the fourth input power are preset. For example, the difference between the total value of the first input power and the second input power and the total value of the third input power and the fourth input power is smaller than the magnitude of the fourth input power. From another viewpoint, for example, the difference between the total value of the first input power and the second input power and the total value of the third input power and the fourth input power is smaller than the magnitude of the first input power. For example, the total value of the first input power and the second input power and the total value of the third input power and the fourth input power are set to be substantially the same.

  FIG. 4 is a diagram for explaining specific examples of the “flooring mode” and the “carpet mode”. In one example, the control unit 50 causes the brush motor 34 to input a current of 1 [A] as the current value of the first input power and causes the electric blower 15 to have the current value of the second input power in the “flooring mode”. Input 4 [A]. On the other hand, in the “carpet mode”, the control unit 50 causes the brush motor 34 to input a current of 4 [A] as the current value of the third input power, and causes the electric blower 15 to set the current value of the fourth input power to 1 Enter [A].

  Based on the above relationship, the control unit 50 changes the magnitude of the input power input to the electric blower 15 in response to changing the magnitude of the input power input to the brush motor 34. For example, when the control unit 50 is switched from the “flooring mode” to the “carpet mode”, the control unit 50 increases the input power input to the brush motor 34 and the input power input to the electric blower 15. To reduce. For example, when the “flooring mode” is switched to the “carpet mode”, the control unit 50 makes the magnitude of the input power input to the electric blower 15 smaller than the magnitude of the input power input to the brush motor 34. .

  On the other hand, when the “carpet mode” is switched to the “flooring mode”, the control unit 50 reduces the input power input to the brush motor 34 and the input power input to the electric blower 15. Increase the size. For example, when the "flooring mode" is switched to the "carpet mode", the control unit 50 makes the magnitude of the input power input to the electric blower 15 larger than the magnitude of the input power input to the brush motor 34. .

  It should be noted that “changing the magnitude of the input power input to the electric blower according to the magnitude of the input power input to the brush motor” means a signal (for example, a control command) related to the drive state of the brush motor 34. Is not limited to the case where the magnitude of the input power input to the electric blower 15 is changed in accordance with the change of the above, and a table corresponding to the contents of FIG. 3 or FIG. The case where the unit 50 simultaneously determines the magnitude of the input power input to the brush motor 34 and the magnitude of the input power input to the electric blower 15 by referring to the table is also included.

Next, an example of the flow of processing by the control unit 50 will be described.
FIG. 5 is a flowchart showing an example of the flow of processing by the control unit 50. As shown in FIG. 5, the control unit 50 first confirms the current operation mode (step S11). Next, the control unit 50 determines whether or not the current operation mode is the "automatic mode" (step S12). When it is determined that the current operation mode is not the “automatic mode” (step S12: NO), the control unit 50 ends the process of the flowchart shown in FIG.

  On the other hand, when it is determined that the current operation mode is the "automatic mode" (step S12: YES), the control unit 50 determines whether the operation mode is the "flooring mode" (step S13). When it is determined that the operation mode is the “flooring mode” (step S13: YES), the control unit 50 controls the electric power supplied from the secondary battery 16 to the brush motor 34 to a current value of 1 [A]. The input power is adjusted to 1 (step S14). Further, the control unit 50 adjusts the power supplied from the secondary battery 16 to the electric blower 15 to the second input power having a current value of 4 [A] (step S15). After that, the control unit 50 ends the process of the flowchart shown in FIG.

  When it is determined in step S13 that the operation mode is not the "flooring mode" (step S13: NO), the control unit 50 determines that the operation mode is the "carpet mode", and the secondary battery 16 causes the brush motor to operate. The electric power supplied to 34 is adjusted to the 3rd input electric power whose current value is 4 [A] (step S16). Further, the control unit 50 adjusts the power supplied from the secondary battery 16 to the electric blower 15 to the fourth input power having a current value of 1 [A] (step S17). After that, the control unit 50 ends the process of the flowchart shown in FIG. The control unit 50 repeats the processing of this flowchart at a predetermined cycle.

Next, the operation of the electric vacuum cleaner 1 will be described.
In the electric vacuum cleaner 1, electric power is supplied from the secondary battery 16 to the electric blower 15 and the brush motor 34. When the power supplied from the secondary battery 16 to the electric blower 15 and the brush motor 34 is increased in order to improve the dust collecting performance, the power consumption of the secondary battery 16 is increased and a sufficient driving time (drivable time) is secured. Becomes difficult.

  In the electric vacuum cleaner 1 of the present embodiment, the magnitude of the input power input to the electric blower 15 is changed according to the change of the input power of the brush motor 34. Therefore, the electric power supplied from the secondary battery 16 can be appropriately distributed to the brush motor 34 and the electric blower 15. Therefore, a long driving time can be ensured while ensuring sufficient dust collecting performance.

  Further, the electric vacuum cleaner 1 of the present embodiment adjusts the distribution amount according to the type of floor surface when distributing the electric power supplied to the brush motor 34 and the electric blower 15. Here, the dust collecting performance of the electric vacuum cleaner 1 is affected by the rotation speed of the electric blower 15 and the rotation speed of the rotary brush 33. By increasing the rotation speed of the electric blower 15, the air volume of the electric blower 15 increases, which contributes to the improvement of the dust collection performance. Further, by increasing the number of rotations of the rotary brush 33, dust can be rolled up from the floor surface and the dust collection performance can be improved.

  When the floor type is the first type such as flooring, even if the rotation speed of the rotating brush 33 is increased to wind up the dust, the contribution to the improvement of the dust collection performance is not large. On the other hand, when the rotation of the electric blower 15 is increased to increase the air volume, not only the dust just below the suction port body 30 but also the dust (for example, cotton dust) located around the suction port body 30 may be sucked. it can. Therefore, in the electric vacuum cleaner 1, when the operation is performed in the "flooring mode", the electric power supplied for increasing the air volume of the electric blower 15 is given priority over the electric power supplied for driving the brush motor 34. Allocate. Specifically, when the amount of input power input to the brush motor 34 is reduced, the amount of input power input to the electric blower 15 is increased.

  On the other hand, when the floor type is the second type such as a carpet, even if the rotation of the electric blower 15 is increased to increase the air volume, the dust located around the suction port body 30 is caught on the carpet and sucked. It is difficult to do so, and the contribution to the improvement of the dust collection performance is not large. On the other hand, by increasing the number of rotations of the rotating brush 33 to float the dust from the carpet, the dust collecting performance can be improved even if the air volume is small. Therefore, when the electric vacuum cleaner 1 is operated in the “carpet mode”, the electric power supplied to drive the brush motor 34 is given priority over the electric power supplied to increase the air volume of the electric blower 15. Allocate. Specifically, when the amount of input power input to the brush motor 34 is increased, the amount of input power input to the electric blower 15 is decreased. Therefore, a long driving time can be secured while securing sufficient dust collecting performance.

  According to the configuration described above, it is possible to provide the electric vacuum cleaner 1 capable of ensuring a long operation time while ensuring sufficient dust collecting performance. That is, the control unit 50 of the electric vacuum cleaner 1 according to the present embodiment changes the magnitude of the input power input to the brush motor 34, and also responds to the change of the magnitude of the input power input to the brush motor 34. The magnitude of the input power input to the electric blower 15 is changed. With such a configuration, it is possible to suppress the fluctuation of the total energy even when the dust collecting performance is secured. Therefore, a long driving time can be ensured while ensuring sufficient dust collecting performance.

  For example, when cleaning a carpet, consider a case in which the rotation speed of the electric blower 15 remains unchanged and the rotation speed of the brush motor 34 is increased. In this case, although the dust collection performance can be improved, the driving time of the electric vacuum cleaner 1 varies greatly depending on the size of the carpet portion and the like. On the other hand, according to the configuration of the present embodiment, the rotational speed of the electric blower 15 is decreased instead of increasing the rotational speed of the brush motor 34, so that the fluctuation of the driving time of the electric vacuum cleaner 1 can be reduced. .

  In the present embodiment, the control unit 50 reduces the input power input to the electric blower 15 and increases the input power input to the brush motor 34 when the input power input to the brush motor 34 is increased. When the amount of input power to be input is reduced, the amount of input power input to the electric blower 15 is increased. With such a configuration, between the brush motor 34 and the electric blower 15, the increase in the power consumption of one can be offset by the decrease in the power consumption of the other. Therefore, a long driving time can be ensured while ensuring sufficient dust collecting performance.

  In the present embodiment, the control unit 50 sets the magnitude of the input power input to the electric blower 15 to the brush motor 34 when the magnitude of the input power input to the brush motor 34 is increased. Make it smaller than the amount of power. With such a configuration, when the floor surface is the second type floor surface such as a carpet, it is possible to secure a sufficient dust collecting performance and secure a longer driving time.

  In the present embodiment, the control unit 50 inputs the magnitude of the input power input to the electric blower 15 to the brush motor 34 when reducing the magnitude of the input power input to the brush motor 34. Greater than the amount of power. According to such a configuration, when the floor surface is the first type floor surface such as a flooring, it is possible to secure a sufficient dust collecting performance and secure a longer driving time.

  In the present embodiment, the control unit 50 supplies the first input power to the brush motor 34 when it is determined that the floor surface of the first type corresponding to the flooring is being cleaned based on the value detected by the current detection unit 35. In addition to the input, the electric blower 15 is made to input the second input power. On the other hand, when the control unit 50 determines that the second type floor surface corresponding to the carpet is being cleaned based on the value detected by the current detection unit 35, it is larger than the first input power to the brush motor 34. While inputting the third input power, the brush motor is made to input the fourth input power smaller than the second input power. According to such a configuration, when the floor surface is the second type floor surface such as a carpet or the floor surface is the first type floor surface such as a flooring, while ensuring sufficient dust collecting performance. It is possible to secure a long driving time.

  In the present embodiment, the control unit 50 causes the difference between the total value of the first input power and the second input power and the total value of the third input power and the fourth input power to fall within a predetermined range. , The first input power, the second input power, the third input power, and the fourth input power are preset. With such a configuration, it is possible to always secure the same driving time regardless of the type of floor surface. Therefore, it is possible to prevent the remaining capacity of the secondary battery 16 from running out during cleaning. This makes it easier for the user to make plans for cleaning and charging.

  Next, some modified examples will be described. In addition, in each modification, the configuration other than the following is the same as that of the above-described embodiment.

(First modification)
First, the first modification will be described.
FIG. 6 is a diagram for explaining specific examples of the “flooring mode” and the “carpet mode” of the first modified example. In the first modified example, in the “flooring mode”, the supply of electric power to the brush motor 34 is stopped and the rotation of the brush motor 34 is stopped. In other words, in the "flooring mode", the input current input to the brush motor 34 is 0 [A], and the input power input to the brush motor 34 is 0 [W].

  That is, in the present specification, “reducing the magnitude of the input power” includes the case of reducing the input power to 0 [W]. Further, in the present specification, “to input the first input power to the brush motor” means to apply the first input power of 0 [W] to the brush motor 34, in other words, not to supply the brush motor 34 with the power. Also includes.

  In the present modification, the control unit 50 causes the brush motor 34 to input a current of 0 [A] as the current value of the first input power (that is, does not input the current) in the “flooring mode”, and the electric blower 15 5 [A] is input as the current value of the second input power. On the other hand, in the “carpet mode”, the control unit 50 causes the brush motor 34 to input a current of 4 [A] as the current value of the third input power, and causes the electric blower 15 to set the current value of the fourth input power to 1 Enter [A].

  With such a configuration, as in the above-described embodiment, it is possible to provide the electric vacuum cleaner 1 capable of ensuring a long operation time while ensuring sufficient dust collecting performance.

(Second modified example)
Next, a second modification will be described.
FIG. 7 is a diagram for explaining the contents of the operation mode of the second modified example. In the second modified example, the electric vacuum cleaner 1 is switched between three operation modes of a “first mode”, a “second mode”, and a “third mode”.

  In the "first mode", the brush motor 34 receives the first input power, the brush motor 34 is driven at a low speed, the second input power is input to the electric blower 15, and the electric blower 15 is driven at a high speed. Mode. In the “first mode”, the brush motor 34 may be supplied with the first input power of 0 [W], and the rotation of the brush motor 34 may be stopped.

  In the “second mode”, the brush motor 34 receives the third input power larger than the first input power, the brush motor 34 is driven at a medium speed, and the electric blower 15 receives the third input power smaller than the second input power. This is a mode in which 4 input power is input and the electric blower 15 is driven at a medium speed. In the “third mode”, the brush motor 34 receives the fifth input power larger than the third input power, the brush motor 34 is driven at a high speed, and the electric blower 15 receives the sixth input power smaller than the fourth input power. This is a mode in which the input power is input and the electric blower 15 is driven at a low speed. The first input power is less than the second input power and the fifth input power is greater than the sixth input power. Either the third input power or the fourth input power may be large or the same.

  In this modification, the total value of the first input power and the second input power, the total value of the third input power and the fourth input power, and the total value of the fifth input power and the sixth input power The magnitudes of the first to sixth input powers are preset so that the difference falls within a predetermined range. For example, the difference between the total value of the first input power and the second input power, the total value of the third input power and the fourth input power, and the total value of the fifth input power and the sixth input power is It is smaller than the magnitude of the sixth input power. From another viewpoint, for example, the total value of the first input power and the second input power, the total value of the third input power and the fourth input power, and the total value of the fifth input power and the sixth input power. Is smaller than the magnitude of the first input power.

  With such a configuration, finer control can be performed according to the state of the floor surface as compared with the above-described embodiment, and the dust collection performance can be improved.

(Third modification)
Next, a third modification will be described.
In the third modification, the control unit 50 sets the operation mode of the electric vacuum cleaner 1 between the “first mode” and the “second mode” based on the detection result of the dust sensor 14 instead of the floor type. Switch. The "first mode" is a mode corresponding to the "flooring mode" of the above embodiment. The “second mode” is a mode corresponding to the “carpet mode” of the above embodiment. For example, the control unit 50 switches the operation mode of the electric vacuum cleaner 1 between the “first mode” and the “second mode” during the cleaning of a certain floor surface, and the “first mode” and the “second mode”. The electric vacuum cleaner 1 is operated in the mode in which the amount of dust collected by the dust sensor 14 is larger.

  Even with such a configuration, it may be possible to provide the electric vacuum cleaner 1 capable of ensuring a long operation time while ensuring sufficient dust collecting performance.

  Although one embodiment and a plurality of modified examples have been described above, the embodiment is not limited to the above example. For example, the floor type may be determined based on the detection result of the current detection unit 35. For example, the control unit 50 determines the floor type based on the information obtained by performing image analysis on the image acquired by the image sensor mounted on the electric vacuum cleaner 1 or the information of the floor map stored in advance. May be determined, and the input power to the electric blower 15 and the brush motor 34 may be changed based on the determination result. The floor type may be determined based on the rotation speed of the brush motor 34. That is, the electric vacuum cleaner 1 is provided with a detection unit that detects the rotation speed of the brush motor 34, and the detection result of the rotation speed of the brush motor 34 detected by this detection unit is used as the detection result of the current detection unit 35 in the above embodiment. You may use instead of. In this case, for example, the motor control unit 36 determines the type of the floor surface based on the detection result of the rotation speed of the brush motor 34, and when the rotation speed of the brush motor 34 is equal to or higher than the third threshold value, the electric vacuum cleaner 1 is When it is determined that the first type floor surface (for example, flooring) is being cleaned, and the rotation speed of the brush motor 34 is less than the third threshold value, the electric vacuum cleaner 1 cleans the second type floor surface (for example, carpet). It may be determined that cleaning is in progress. Then, the control unit 50 may change the input power to the electric blower 15 and the brush motor 34 based on the determination result.

  According to at least one embodiment described above, the electric vacuum cleaner changes the magnitude of the input power input to the brush motor and the electric vacuum cleaner according to the magnitude of the input power input to the brush motor. By having the control unit that changes the magnitude of the input power input to the blower, it is possible to secure a sufficient dust collecting performance and secure a long operation time.

  Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the invention described in the claims and the equivalents thereof as well as included in the scope and the gist of the invention.

  DESCRIPTION OF SYMBOLS 1 ... Electric vacuum cleaner, 10 ... Vacuum cleaner main body, 13 ... Dust collector, 14 ... Dust sensor, 15 ... Electric blower, 16 ... Secondary battery, 17 ... Main body control part, 18 ... Extension tube connection part, 19 ... Setting Button, 20 ... Extension tube, 30 ... Suction port body, 33 ... Rotating brush, 34 ... Brush motor, 35 ... Current detection part, 36 ... Motor control part, 37 ... Suction port, 40 ... Electric blower control part, 41 ... No. 1 switching unit, 42 ... 2nd switching unit, 50 ... control part, C1 ... electric blower control circuit, C2 ... motor control circuit.

Claims (10)

Electric blower,
A rotating brush installed on the suction port and along the floor surface,
A brush motor for driving the rotating brush,
A secondary battery for supplying electric power to the electric blower and the brush motor,
A detection unit that detects a value related to input power input to the brush motor,
An input that is input to the electric blower in response to a change in the input power input to the brush motor based on the detection result of the detection unit and a change in the input power input to the brush motor. A control unit that changes the magnitude of electric power,
Vacuum cleaner equipped with. The control unit is
When increasing the amount of input power input to the brush motor, reduce the amount of input power input to the electric blower,
When the magnitude of the input power input to the brush motor is reduced, the magnitude of the input power input to the electric blower is increased.
The electric vacuum cleaner according to claim 1. The control unit sets the magnitude of the input power input to the electric blower to be greater than the magnitude of the input power input to the brush motor when increasing the magnitude of the input power input to the brush motor. Make it smaller,
The electric vacuum cleaner according to claim 2. The controller controls the magnitude of the input power input to the electric blower to be smaller than the magnitude of the input power input to the brush motor when reducing the magnitude of the input power input to the brush motor. Enlarge,
The vacuum cleaner according to claim 2 or 3. The control unit is
When the value detected by the detection unit is less than a predetermined threshold value, the brush motor is made to input the first input power, and the electric blower is made to input the second input power,
When the value detected by the detection unit is equal to or greater than the predetermined threshold value, the brush motor is caused to input the third input power larger than the first input power, and the electric blower is supplied with the second input power. Input a small fourth input power,
The vacuum cleaner according to any one of claims 1 to 4. The control unit is
When it is determined that the floor surface of the first type corresponding to the flooring is being cleaned on the basis of the value detected by the detection unit, the brush motor is caused to input the first input power, and the electric blower is configured to control the second input power. Input the input power,
When it is determined that the floor of the second type corresponding to the carpet is being cleaned based on the value detected by the detection unit, the brush motor is caused to input the third input power larger than the first input power. At the same time, the electric blower is made to input a fourth input power smaller than the second input power,
The vacuum cleaner according to any one of claims 1 to 5. The controller is configured such that the difference between the total value of the first input power and the second input power and the total value of the third input power and the fourth input power falls within a predetermined range. The magnitudes of the first input power, the second input power, the third input power, and the fourth input power are preset.
The vacuum cleaner according to claim 5 or 6. The difference between the total value of the first input power and the second input power and the total value of the third input power and the fourth input power is smaller than the magnitude of the fourth input power.
The vacuum cleaner according to any one of claims 5 to 7. Electric blower,
A rotating brush installed on the suction port and along the floor surface,
A brush motor for driving the rotating brush,
A secondary battery for supplying electric power to the electric blower and the brush motor,
The magnitude of the input electric power input to the brush motor is changed based on the determination result regarding the floor type, and the electric power is input to the electric blower in response to the change of the input electric power input to the brush motor. Control unit that changes the magnitude of input power
Vacuum cleaner equipped with. Electric blower,
A rotating brush installed on the suction port and along the floor surface,
A brush motor for driving the rotating brush,
A secondary battery for supplying electric power to the electric blower and the brush motor,
When increasing the amount of input power input to the brush motor, reducing the amount of input power input to the electric blower and reducing the amount of input power input to the brush motor A control unit for increasing the amount of input power input to the electric blower;
Vacuum cleaner equipped with.

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