JP5531839B2 - Electric vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner with a built-in electric blower, and in particular, by detecting the movement of the hand operating unit as vibration, the user is performing a cleaning operation or the electric blower and the brush motor are driven while being cleaned. The present invention relates to a vacuum cleaner that determines whether or not the operation is interrupted and controls an electric blower and a brush motor based on the determination result.

  The electric vacuum cleaner generally adjusts the suction amount of the electric blower with an operation switch attached to the hand operation unit, but the cleaning operation detection means provided in the grip part (hand operation unit) and the cleaning operation By providing control means for controlling the driving of the electric blower by the detection means, noise and unnecessary power when the cleaning operation is interrupted are reduced.

  Conventionally, as this type of vacuum cleaner, a grip portion provided with an operating means for setting the driving state of the electric blower is provided at the other end of the hose connected at one end to the main body of the vacuum cleaner. A cleaning state detection sensor, which is provided with a conductive rolling element so as to be able to roll, is provided in a grip part that can easily vibrate during cleaning and can use the signal line of the operating means, and drives the electric blower according to the setting of the operating means. And clean it. If the cleaning operation is not detected by the cleaning state detection sensor, it is determined that the cleaning is interrupted, and the electric blower is stopped. When the cleaning operation is detected by the cleaning operation detecting means while the driving of the electric blower is reduced or stopped because it is determined that the cleaning is interrupted, the driving state before the reduction or stop of the driving of the electric blower is restored. It was something to control. Further, the operation circuit of the operation means recognizes whether the switch is operated, and sends a signal of a different voltage corresponding to each switch to the control means provided in the main body of the electric vacuum cleaner via the signal line of the hose body. Apply and control the electric blower. The operation circuit of the operation means is a vacuum cleaner having a storage means for detecting the state of the cleaning state detection sensor and storing the setting contents, and causing the control means to transmit a voltage value signal (for example, a patent) Reference 1).

Japanese Unexamined Patent Publication No. 2000-196 (pages 4-5, FIG. 1, FIGS. 5-6)

  The operation means of the conventional vacuum cleaner is configured as described above, and the operation circuit of the operation means has storage means for detecting the state of the cleaning state detection sensor and storing the setting contents, and the control means has a voltage value. In the configuration for transmitting the signal, it is necessary to create information for making the control means judge in the operation circuit of the operation means, and the circuit components and control for detecting the state of the cleaning state detection sensor and storing the setting contents Circuit components and the like for transmitting a voltage value signal to the means must be installed, and there is a problem that the circuit configuration is complicated and easily broken down, and costs are high.

  Further, the determination of interruption of the cleaning operation in the state where the electric blower and the brush motor are driven and the determination of resumption of the cleaning operation after it is determined that the cleaning operation is interrupted are the times stored in a predetermined storage means. Judgment is based on (2 seconds). Therefore, the reference time for determining the interruption of the cleaning operation is lengthened and the reference time for determining the restart of the cleaning operation is shortened, or the reference time for determining the interruption of the cleaning operation is shortened and the cleaning operation is restarted. There is a problem that it is not possible to set a reference time for determination such as making a reference time for determination longer. Further, since the reference time for determination cannot be changed, there is a problem that it is difficult to adjust the reference time for determining the interruption of the cleaning operation and the reference time for determining the resumption of the cleaning operation corresponding to the user's preference.

Further, when the main drive start or operation switch for changing the electric blower and the output of the brush motor, i.e., the operation of the electric blower及or brush motor issues test vibrations even when not stabilized Runode, correctly determine the cleaning operation There was a problem that it could not be performed and could cause malfunction.

The present invention is intended to solve the above problems, it aims to provide a signal efficiently and signals for detecting a cleaning operation, you output to the control means with a simple structure electric cleaner for outputting the operation switch And

Vacuum cleaner according to the present invention, an electric blower for generating a suction force, a cleaner main body with a built-in electric dynamic blower, a dust collecting part that collects dust contained in the air sucked by the electric blower, a whip hose whose one end has a grip portion connected to the other end in the electric vacuum cleaner body, communicates with the whip hose, a suction device having a motor for driving the rotary brush scraped dust from a cleaning surface, hand a cleaning state detection sensor for detecting movement of the hand hose provided to the hose, and an operation switch for switching the driving status of the provided et al are conductive moving blower whip hose, the output signal and sweep divided state detection sensor unit for outputting the operation switch Control means for controlling the electric blower and the electric motor based on the signal to perform, and storage means for storing the reference value for judging the cleaning state from the signal of the cleaning state detection sensor unit and the operation content of the operation switch And the signal output from the operation switch and the signal output from the cleaning state detection sensor unit are superimposed and output to the control means, and the signal output from the cleaning state detection sensor unit is separated from the superimposed signal. The state detection means and the storage means are provided on the cleaner body side, and the control means detects the movement of the hand hose based on the number of pulses per predetermined time of the signal voltage output by the cleaning state detection sensor unit, and determines the number of pulses. When the number of pulses is less than the first reference value, it is determined that the cleaning operation of the vacuum cleaner is interrupted, and the number of pulses is compared with the second reference value. , When the number of pulses is equal to or greater than the second reference value, it is determined that the cleaning operation of the vacuum cleaner that has been interrupted has been resumed, the first reference value is set to be greater than the second reference value, and the control means , The number of pulses at a given time and the first Compared with the reference value, if the number of times the number of pulses is below the first reference value is continuously greater than or equal to the third reference value, it is determined that the cleaning operation of the electric vacuum cleaner is interrupted, and for a predetermined time Every time the number of pulses is compared with the second reference value and the number of times the number of pulses becomes equal to or greater than the second reference value is continuously greater than or equal to the fourth reference value, the vacuum cleaner is determined to be suspended. It is determined that the operation is resumed, and the third reference value is set larger than the fourth reference value .
An electric vacuum cleaner according to the present invention includes an electric blower that generates a suction force, an electric vacuum cleaner main body including the electric blower, a dust collecting unit that collects dust contained in the air sucked by the electric blower, and one end Provided on the hand hose with a hand hose having a gripping part on the other end side, a hand hose that is connected to the vacuum cleaner body, a motor that drives a rotating brush that sweeps up dust on the surface to be cleaned Based on a cleaning state detection sensor for detecting the movement of the hand hose, an operation switch provided on the hand hose for switching the driving state of the electric blower, a signal output by the operation switch, and a signal output by the cleaning state detection sensor unit Control means for controlling the blower and the motor, and storage means for storing the reference value for judging the cleaning state from the signal of the cleaning state detection sensor unit and the operation content of the operation switch And the signal output from the operation switch and the signal output from the cleaning state detection sensor unit are superimposed and output to the control means, and the signal output from the cleaning state detection sensor unit is separated from the superimposed signal. The state detection means and the storage means are provided on the cleaner body side, and the control means detects the movement of the hand hose based on the number of pulses per predetermined time of the signal voltage output by the cleaning state detection sensor unit, and determines the number of pulses. When the number of pulses is less than the first reference value, it is determined that the cleaning operation of the vacuum cleaner is interrupted, and the number of pulses is compared with the second reference value. , When the number of pulses is equal to or greater than the second reference value, it is determined that the cleaning operation of the vacuum cleaner that has been interrupted has been resumed, the first reference value is set to be greater than the second reference value, and the control means , Electric blower or motor control When comparing the number of pulses with the first reference value for the first time or when comparing the number of pulses with the second reference value for the first time, the pulse number is counted after a predetermined time. It is what is started.

  According to the electric vacuum cleaner of the present invention, the storage means for storing the reference value for determining the cleaning state from the signal of the cleaning state detection sensor unit for detecting the movement of the hand hose and the operation content of the operation switch for switching the driving state of the electric blower. Is provided on the main body side of the vacuum cleaner, so that it is possible to provide a low-cost vacuum cleaner that has a simple configuration and is less likely to fail.

It is an external appearance perspective view of the vacuum cleaner which concerns on Embodiment 1 of this invention. It is a perspective view of the state where the dust collecting part was removed from the cleaner body of the electric vacuum cleaner concerning Embodiment 1 of this invention. It is sectional drawing of the state which removed the dust collection part from the cleaner body of the vacuum cleaner which concerns on Embodiment 1 of this invention. It is a general-view perspective view of the hand hose in the vacuum cleaner which concerns on Embodiment 1 of this invention. It is a longitudinal cross-sectional view of the hand hose in the vacuum cleaner which concerns on Embodiment 1 of this invention. It is a figure explaining the support method of the cleaning state detection board | substrate of the hand hose in the vacuum cleaner which concerns on Embodiment 1 of this invention. It is the II sectional view taken on the line of FIG. 6 explaining the method for supporting the cleaning state detection board of the hand hose in the electric vacuum cleaner according to Embodiment 1 of the present invention. It is sectional drawing explaining the internal structure of the cleaning condition detection sensor provided in the cleaning condition detection board | substrate of the vacuum cleaner which concerns on Embodiment 1 of this invention. It is a figure explaining the method to attach the cleaning condition detection sensor of the vacuum cleaner which concerns on Embodiment 1 of this invention to a cleaning condition detection board | substrate. It is a schematic diagram explaining the movement of the cleaning state detection board | substrate of the vacuum cleaner which concerns on Embodiment 1 of this invention. It is a circuit block diagram of the vacuum cleaner which concerns on Embodiment 1 of this invention. It is a figure explaining the generation | occurrence | production method of the detection signal of the cleaning state detection sensor of the vacuum cleaner which concerns on Embodiment 1 of this invention. . It is an operation switch determination voltage table of the vacuum cleaner which concerns on Embodiment 1 of this invention. 14 is a voltage signal at points A and B in FIG. It is a figure explaining the detection method of the cleaning state detection sensor voltage signal of the vacuum cleaner which concerns on Embodiment 1 of this invention. It is a flowchart for demonstrating control of the vacuum cleaner which concerns on Embodiment 1 of this invention. It is a flowchart for demonstrating control of the vacuum cleaner which concerns on Embodiment 1 of this invention. It is a flowchart for demonstrating the reference value change means of the vacuum cleaner which concerns on Embodiment 2 of this invention.

  Hereinafter, a vacuum cleaner according to the present invention will be described with reference to the drawings. Here, although the vacuum cleaner which comprises a cyclone separation type dust collector is demonstrated as an example, it is not limited to this. For example, the present invention is similarly applied to a vacuum cleaner having a vertical cylindrical cyclone dust collection unit or a vacuum cleaner having a paper pack type dust collection unit even in the same cyclone separation type dust collector. It is something that can be done.

Embodiment 1 FIG.
[Configuration of vacuum cleaner]
FIG. 1 is an external perspective view of a vacuum cleaner according to the present invention. As shown in FIG. 1, the vacuum cleaner 100 includes a suction tool 1, an extension pipe 2, a hand hose 3, a hose 4, and a cleaner body 5. The suction tool 1 sucks dust on the floor and the like together with air. A rotating brush (not shown) that sweeps up dust on the surface to be cleaned such as a floor surface and a carpet, and an electric motor 19 that is a brush motor for driving the rotating brush are incorporated. The rotating brush has a flocking (not shown) that contacts the surface to be cleaned and scrapes off dust. The rotating brush is driven by an electric motor 19 via a belt or the like.

  One end of a straight cylindrical extension pipe 2 is connected to the outlet side of the suction tool 1. The other end of the extension pipe 2 is connected to one end of a hand hose 3 provided with a handle provided with an operation switch 8 for controlling the operation of the vacuum cleaner 100. The operation switch 8 is a switch for switching between the strength of the suction air of the electric blower 9 and the stop. One end of a flexible bellows-like hose 4 is connected to the other end of the hand hose 3. Further, the cleaner body 5 is connected to the other end of the hose 4.

  A wheel 6 is provided at the rear portion of the cleaner body 5, and the cleaner body 5 is movable by a front caster (not shown) and a wheel 6 provided on the front lower surface of the cleaner body 5. Moreover, the power supply cord 7 is connected to the cleaner body 5, and the power supply cord 7 is connected to an external power supply to energize, and the electric blower 9 (see FIG. 3) is driven to perform a suction operation. The suction tool 1, the extension pipe 2, the hand hose 3, and the hose 4 constitute a part of a suction path for allowing dust-containing air, which is air containing dust, to flow from the outside to the inside of the cleaner body 5.

By operating the operation switch 8, by driving the electric blower 9 and the motor 19, the suction tool 1 dust from a cleaning surface is written out, it is conveyed to the extension pipe 2, the hose 4 and the vacuum cleaner 100, sweep removal are dust collection in the dust collecting unit 20 built in the machine body 5. Then, suction air is discharged from the scavenging dividing machine body 5.

  FIG. 2 is a perspective view of the cleaner body 5 and shows a state in which the dust collecting unit 20 is removed. FIG. 3 is a cross-sectional view of the cleaner body 5 and is a cross-sectional view taken along a vertical cross-sectional line passing through the main body inlet 17. As shown in FIGS. 2 and 3, the cleaner body 5 includes a main body case 10, a dust collecting unit 20, and a connection component 30.

  A main body case 10 constituting the outer shell of the vacuum cleaner main body 5 includes a lower case 11 that opens at the top and accommodates the electric blower 9 and various control boards (not shown), and an upper case 12 that covers the opening of the lower case. And a hose connection port 13 to which the hose 4 can be connected. The hose connection port 13 is an inlet for air sucked into the cleaner body 5. The upper surface of the upper case 12 is configured to have a shape on which the dust collection unit 20 can be placed.

  The main body pipe 14 is made of various resins and has a function of connecting the hose connection port 13 to which the hose 4 is connected and the dust collecting portion 20. The main body pipe 14 is placed on the main body case 10 along the longitudinal direction of the substantially cylindrical dust collecting portion 20. A dust collector connection port 15 is opened at the end of the main body pipe 14 on the side connected to the dust collector 20.

  The exhaust hole 16 is composed of a large number of holes provided to exhaust the exhaust from the electric blower 9 to the outside, and is arranged at a position that is substantially symmetrical with the main body pipe 14 around the dust collection portion 20.

  A main body inlet 17 is opened at a position on the upper surface of the upper case 12 and almost directly above the electric blower 9. The air flowing out from the dust collection unit 20 passes through the main body inlet 17 and is sucked into the electric blower 9 built in the main body case 10.

  The dust collecting unit 20 collects dust contained in the air sucked by the suction force of the electric blower 9, and is connected to the electric blower 9 from the hose connection port 13 that is an inlet of sucked air to the cleaner body 5. It constitutes a part of the leading suction path. The dust collection method of the dust collection unit 20 may be either a cyclone method or a paper pack method. The dust collection unit 20 is a box having a substantially cylindrical outer shell as a whole, and a swirl chamber and a dust collection chamber for collecting dust by a cyclone method are provided therein. The dust collector 20 has a dust collector inlet 21 as an air inlet to the dust collector 20 and a dust collector outlet 22 as an air outlet from the dust collector 20. Moreover, the dust collection part fixing | fixed part 23 for attaching the dust collection part 20 to the main body case 10 so that attachment or detachment is possible is provided. The dust collection part fixing part 23 is formed in, for example, a bowl shape, and the dust collection part 20 is engaged with the dust collection part fixing hole 18 formed in the main body case 10 so that the dust collection part 20 is engaged with the main body case 10. Can be attached to.

  A primary filter 41 and a secondary filter 42 are provided in the main body case 10 on a path from the main body inlet 17 to the electric blower 9. The primary filter 41 and the secondary filter 42 are for collecting fine dust contained in the air discharged from the dust collection unit 20. Dust contained in the air sucked into the vacuum cleaner body 5 is basically collected by the dust collecting unit 20, but fine dust that could not be collected by the dust collecting unit 20 is transferred to the electric blower 9. In order to prevent suction, a primary filter 41 and a secondary filter 42 are provided. The primary filter 41 and the secondary filter 42 are comprised by the nonwoven fabric formed in the honeycomb shape, the corrugated shape, the pleat shape, and the flat plate shape, for example. The secondary filter 42 has a finer filter than the primary filter 41, and fine dust that has passed through the primary filter 41 is collected by the secondary filter 42.

[Configuration of cleaning state detection sensor]
Next, a cleaning state detection sensor which is a main part of the present invention will be described with reference to FIGS.
4 is an external perspective view showing the hand hose 3 according to Embodiment 1 of the present invention, FIG. 5 is a longitudinal sectional view of FIG. 4, and the hand hose 3 includes a connecting pipe 51, a grip part 52, and a lid part 53. Consists of. The connecting pipe 51 is composed of a hose connecting part 51a to which the hose 4 is connected and an extension pipe connecting part 51b to which the extension pipe 2 is connected, and 54 is a hose cover that is divided into two vertically. The cleaning state detection sensor 32 is built in the hand hose 3.

6 is an enlarged view of a main part for explaining a method of supporting the cleaning state detection sensor 32 of FIG. 5, and FIG. 7 is a cross-sectional view taken along the line II of FIG.
As shown in FIGS. 5, 6, and 7, the cleaning state detection substrate 58 on which the cleaning state detection sensor 32 is mounted has a support wall on the opposite side (back surface) to the surface on which the cleaning state detection sensor 32 is mounted. 59 (a part of the damper means) is slidably contacted in a direction (Z direction) perpendicular to the paper surface. In addition, the cleaning state detection board 58 has a lower end rib 55 (part of damper means, guide wall) protruding from the connecting pipe 51 toward the lid portion 53 side in the Z direction with the step bottom surface 55a and the step portion side surface 55b. The upper end is supported by an upper pressing holder 56 (elastic body) made of an elastic body such as urethane. The lower pressing rib 55 and the support wall 59 are damper means that suppresses the movement of the cleaning state detection board 58 by generating a frictional force proportional to the moving speed of the cleaning state detection board 58 with respect to the cleaning state detection board 58. The upper presser retainer 56 is supported (via the upper presser rib 57) by an upper presser rib 57 that protrudes toward the connecting pipe 51 from the lid 53 that constitutes a part of the housing of the hand hose 3. The upper pressing holder 56 may be adhered to either or both of the cleaning state detection substrate 58 and the upper pressing rib 57 with a double-sided tape or the like.

  FIG. 8 is a cross-sectional view illustrating the internal structure of the cleaning state detection sensor 32 provided on the cleaning state detection board 58. FIG. 8A shows a movable section when the cleaning state detection sensor 32 is held in a vertical position (Y direction), and FIG. 8B shows a movable section when the cleaning state detection sensor 32 is held in a horizontal position. 40 states are shown. FIG. 9 is a diagram illustrating attachment of the cleaning state detection sensor 32 and the cleaning state detection substrate 58.

The cleaning state detection sensor 32 includes two substantially concave electrodes 37 including substantially circular electrode plane portions 37c and 38c and electrode side surface portions 37a, 37b, 38a, and 38b in which outer edges of the electrode plane portions 37c and 38c are raised. , 38 and a conductive, for example, spherical movable contact piece 40 (movable body), and the two substantially concave electrodes 37, 38 are arranged on the concave side so as to be substantially parallel with a gap therebetween. Opposite. The outsides of the two electrodes 37 and 38 are fixed by a mold 39. The movable contact piece 40 is disposed so as to be able to roll or slide in an operation space 64 on a substantially cylinder formed by two substantially concave electrodes 37 and 38. Signal cleaning state detection sensor 3 2 is output when the electrode side portions 37a and 38a or 37b and 38b of a substantially concave shape of the two electrodes 37 and 38 becomes conductive via the movable contact piece 40. A method for outputting this signal will be described later. Thus, since the cleaning state detection sensor 32 having the movable body 40 that is displaced based on the moving direction of the hand hose 3 during the cleaning operation of the electric vacuum cleaner 100 is provided, the vibration of the cleaning state detection sensor 32 can be performed with a simple configuration. Can be detected.

  When the cleaning state detection sensor 32 is arranged as shown in FIG. 8A, the movable contact piece 40 is mainly in the Z direction with respect to the moving direction (Z direction) of the hand hose 3 during the cleaning operation of the electric vacuum cleaner 100. Moving. The periphery of the electrode side surfaces 37a, 37b, 38a, 38b is circular, and the movable contact piece 40 moves in the YZ plane. During this movement, the movable contact piece 40 may be separated from the electrode 37 or 38, and at this moment, the conduction between the electrodes 37 and 38 is cut off. On the other hand, when the cleaning state detection sensor 32 is arranged as shown in FIG. 8B, the movable contact piece 40 also moves in this case with respect to the moving direction (Z direction) of the hand hose 3 during the cleaning operation of the electric vacuum cleaner 100. Moves mainly in the Z direction on the surface of the electrode plane portion 37c. However, since the diameter of the movable contact piece 40 is smaller than the distance between the electrode plane portions 37 c and 38 c, it is difficult to conduct the electrodes 37 and 38 through the movable contact piece 40 when the movable contact piece 40 moves. Therefore, if the cleaning state detection sensor 32 is arranged as shown in FIG. 8A, it is easy to detect vibrations in the direction in which the hand hose 3 moves.

The cleaning state detection sensor 32 has the electrode hose 3 in the vertical direction (Y direction) when the hand hose 3 is arranged so that the lid 53 is on the upper side (in the case of FIGS. 8A and 9). It is parallel and the direction (X direction) which the electrodes 37 and 38 oppose becomes a direction orthogonal to the front-back direction (Z direction) which a user reciprocates the hand hose 3 with the grip part 52 during cleaning. In addition, the cleaning state detection board 58 is attached. Lead wires 37d and 38d are connected to the electrode side surface portions 37a and 37b of the electrode 37 and the electrode side surface portions 38a and 38b of the electrode 38, respectively. The cleaning state detection sensor 32 is attached to the cleaning state detection board 58 by soldering the lead wires 37d and 38d and the cleaning state detection board 58. The cleaning state detection sensor 32 may be attached to the cleaning state detection substrate 58 by fixing the mold 39 to the cleaning state detection substrate 58 with a screw or the like.

As opposed to the direction of the electrodes 37, 38 of the cleaning state detection sensor 32 (X-direction) and the normal direction (X direction) of the mounting surface of the cleaning condition detecting substrate 58 coincide, clean the cleaning state detection sensor 32 state When attached to the detection board 58, the cleaning state detection board 58 is placed on the hand hose 3 so that the normal direction of the mounting surface of the cleaning state detection board 58 is the left-right direction perpendicular to the front-rear direction in which the hand hose 3 is reciprocated. Supported inside. By arranging the cleaning state detection substrate 58 and the cleaning state detection sensor 32 in this way, the cleaning state detection is performed with respect to the movement in the front-rear direction (Z direction) which is the reciprocating direction of the hand hose 3 of the user during cleaning. The movable contact piece 40 of the sensor 32 is swung in the YZ plane around the front-rear direction (Z direction) in the operation space 64. That is, the movable contact piece 40 is displaced in the operation space 64 based on the moving direction of the hand hose 3 during the cleaning operation of the electric vacuum cleaner 100.

[Configuration of electrical circuit]
FIG. 11 is a circuit configuration diagram of the electric vacuum cleaner according to Embodiment 1 of the present invention.
Vacuum cleaner of the present embodiment, scavenging removal machine body 5, whip hose 3+ hose 4, extension pipe 2 is constituted by four blocks suction tool 1.

  In FIG. 11, 24 is a commercial AC power source, 25 is a 15 A current fuse, and is a protective device when the electric blower 9 becomes locked or when it becomes abnormal due to a short circuit. Reference numeral 26 denotes a 4A current fuse, which is a protective device when the electric motor 19 is locked or when an abnormality occurs due to a short circuit.

In the block of the cleaner body 5, reference numeral 27 denotes a DC power supply device whose input side is connected to the electrolytic capacitor C1 and outputs a predetermined DC voltage from the output side. D1 is a diode that rectifies the output of the commercial AC power supply 24, 28 is a constant voltage power supply that is connected to the electrolytic capacitor C2 on the input side and outputs a predetermined constant voltage from the output side, and C2 suppresses oscillation of the constant voltage power supply 28. Electrolytic capacitor for C3 is an electrolytic capacitor for stabilizing the output of the constant voltage power supply 28. The constant voltage power supply 28 supplies 5V voltage to the microcomputer (control means) 29, the operation switch 8, the cleaning state detection sensor unit 31, and the cleaning state detection means 33. Reference numeral 34 denotes a triac (bidirectional thyristor) for driving the electric blower 9 built in the cleaner body 5. Reference numeral 35 denotes an electric motor 19 drive triac (bidirectional thyristor) for driving the electric motor 19. Reference numeral 36 denotes a safety switch for stopping a rotating brush (not shown) when the suction tool 1 is lifted into the air.

  The operation switch 8 and the cleaning state detection sensor unit 31 are included in the block of the hose 4 + the hand hose 3. Three piano wires are built in the hose 4 and serve also as signal wires.

The operation switch 8 includes switches SW1 to SW4 and resistors R6 to R10.
SW1 is a switch for turning the electric motor 19 off and on. SW2 is an ECO mode operation switch that controls the electric blower 9 and the electric motor 19 so as to suppress the unnecessary power supply during the cleaning operation interruption by detecting the interruption state of the cleaning operation and the restarting state of the cleaning operation of the present invention. is there. The ECO mode operation switch includes an ECO strong mode and an ECO weak mode, which can be switched by pressing the switch. The strong ECO mode is operated at an output of about 1000 W during the cleaning operation, and when the cleaning operation is interrupted, the output is powered down to about 100 W and the electric motor 19 is stopped. When the cleaning operation resumption state is detected from the cleaning operation interruption detection state (output: about 100 W), the output is powered up to about 1000 W and the electric motor 19 is rotated. SW3 is a standard mode operation switch that controls the electric blower 9 and the electric motor 19 without detecting the interrupted state of the cleaning operation and the restarted state of the cleaning operation of the present invention. The standard mode operation switch includes a standard strong mode and a standard weak mode, which can be switched by pressing the switch. In the standard strong mode, the output is operated at a constant power of about 1000 W, and the electric motor 19 is rotated. In the standard strong mode, the motor 19 is rotated by operating at a constant output of about 500 W. SW 4 is a switch for stopping the electric blower 9 and the electric motor 19.

  When the switches SW1, SW2, SW3, and SW4 are pressed (ON), the circuits of the resistors R7, R8, R9, and R10 connected in series with the respective switches are closed. When the pressure is released, the switches SW1, SW2, SW3, SW4 open a circuit with resistors R7, R8, R9, R10 connected in series with the respective switches. Therefore, only the circuit of the resistor R6 is closed when the switches SW1, SW2, SW3, and SW4 are not pressed.

  Depending on the combination of the ON states of the switches SW1 to SW4, the partial pressure of the resistors R4 and R6 incorporated in the circuit on the cleaner body 5 side (when the switches SW1 to SW4 are all OFF), or R6 and R7, R8, The input voltage of the microcomputer 29 changes due to the parallel resistance of R9 and R10 and the voltage division of R4 (when any of the switches SW1 to SW4 is ON). The microcomputer 29 determines the operation mode according to this input voltage, and controls the power supplied to the electric blower 9 and the electric motor 19 according to the ON state of the switches SW1 to SW4 of the operation switch 8.

A cleaning state detection sensor unit 31 includes a cleaning state detection sensor 32. Resistor R5 connected to the resistors and cleaning state detection sensor 32 which is connected to the operation switch 8 are connected in parallel, is connected to the negative terminal and the microcomputer 29 of the comparator CP provided in the scavenging removal machine body 5 side The The output of the operation switch 8 and the output of the cleaning state detection sensor 32 are superimposed on one wire in the hose 4 and connected to the negative terminal of the comparator CP. The cleaning state detection means 33 is a circuit that makes the signal voltage obtained by superimposing the output of the operation switch 8 and the output of the cleaning state detection sensor 32 only the output of the cleaning state detection sensor 32 . R1 is a pull-up resistor, and R2 and R3 are voltage dividing resistors for creating a reference voltage for the comparator CP.

FIG. 12 is a diagram for explaining a method of generating a detection signal of the cleaning state detection sensor 32.
When the two electrodes 37 and 38 of the cleaning state detection sensor 32 are connected via the movable contact piece 40, the resistor R5 connected in series to the cleaning state detection sensor 32 and the parallel resistance on the operation switch 8 side are in parallel. Connected. A voltage obtained by dividing the DC voltage supplied from the constant voltage power supply 28 is supplied to the comparator CP and the microcomputer 29 by the parallel combined resistor and the resistor R4 provided on the cleaner body 5 side.

On the other hand, if the movable contact piece 40 of the cleaning state detection sensor 32 does not come into contact with at least one of the two electrodes 37 and 38, the conduction between the two electrodes 37 and 38 is cut off, and the circuit of the resistor R5 is opened. As a result, a voltage obtained by dividing the DC voltage supplied from the constant voltage power supply 28 by the parallel resistance on the operation switch 8 side and the resistance R4 provided on the cleaner body 5 side is supplied to the microcomputer 29 serving as the comparator CP. . This voltage is different from voltage when the variable Dosehhen 40 becomes conductive between the two electrodes 37 and 38.

Next, the operation will be described.
When using the vacuum cleaner 100, the dust collector connection port 15 and the dust collector inlet 21 are connected, and the main body inlet 17 and the dust collector outlet 22 are connected to collect the dust. The part 20 is placed on the upper surface of the main body case 10, and the dust collection part 20 is fixed to the main body case 10 by the dust collection part fixing part 23 and the dust collection part fixing hole 18. When the operation switch 8 is operated to drive the electric blower 9 accommodated in the main body case 10, the dust-containing air sucked by the suction force of the electric blower 9 passes through the hose connection port 13 to the main body pipe 14. It enters and passes through the dust collector connection port 15 and the dust collector inlet 21 and is taken into the dust collector 20. Dust contained in the air taken into the dust collector 20 is collected by the dust collector 20. The air after the dust is collected by the dust collector 20 enters the main body case 10 through the dust collector outlet 22 and the main body inlet 17 and passes through the primary filter 41 and the secondary filter 42. . At this time, fine dust contained in the air is collected by the primary filter 41 and the secondary filter 42. The air that has passed through the primary filter 41 and the secondary filter 42 reaches the electric blower 9 and is exhausted from the exhaust hole 16 through an internal passage (not shown). When dust collects in the dust collection unit 20, the dust collection unit 20 is detached from the main body case 10 and the collected dust is discarded.

  In the hand hose 3 and the cleaning state detection sensor 32, the electrically conductive movable contact piece 40 is straddling the opposing electrodes 37 and 38, and is an electrically closed circuit unless external vibration is applied. Form. When vibration from the outside is applied to the cleaning state detection sensor 32, the movable contact piece 40 is released from one or both of the electrodes 37 and 38, and the circuit is instantaneously opened, but immediately straddles the electrodes 37 and 38. Touching and closing the circuit is repeated.

In addition, when the hand hose 3 provided with the cleaning state detection sensor 32 changes its inclination with respect to the floor surface due to a back-and-forth motion or a change in the cleaning posture accompanying the cleaning operation, the movable contact piece 40 has the electrode side surface portions 37a and 38a depending on its mass. The movable contact piece 40 and the electrodes 37 and 38 continue to maintain the same positional relationship as when the hand hose 3 is not moving as described above.

  On the other hand, in the hand hose 3 in a state where the cleaning operation is interrupted, for example, the hand hose 3 and the extension pipe 2 are stood against a desk, a wall, or the electric vacuum cleaner 100, and the moving motion associated with the cleaning operation is eliminated, The movable contact piece 40 and the electrodes 37 and 38 form a closed circuit or become an open circuit, and the state is maintained. For example, if the circuit is stationary in the state of FIG. 8A, the circuit is maintained in a closed state. Further, as shown in FIG. 8B, if the stationary state is obtained by rotating 90 degrees around the Z axis, the movable contact piece 40 does not contact the electrode 38, and the circuit is maintained in an open state. .

When the cleaning operation is interrupted, if the electric vacuum cleaner is interrupted while driving the electric blower 9 or the electric motor 19 which is a brush motor, the electric blower 9 or the electric motor 19 being driven and the rotating brush are generated. The vibration may be transmitted to the cleaning state detection sensor 32 through the floor, desk, wall, or the like, or through the hose 4 or the extension pipe 2 . Also, generated by the electric blower 9 being driven, airflow flowing whip hose 3 near the hose 4, resulting a vortex inside the hose 4 and the extension pipe 2, also collides with the hose 4 and the extension pipe 2 inside wall In some cases, the vibration generated by the transmission is transmitted to the cleaning state detection sensor 32 via the hose 4 or the extension pipe 2 .

Vibration transmitted to the cleaning state detection sensor 32 is transmitted through the cleaning state detecting substrate 58 cleaned state detection sensor 32 is mounted. Here, as shown in FIGS. 6 and 7, the cleaning state detection substrate 58 is disposed on the opposite side (back surface) of the surface on which the cleaning state detection sensor 32 is mounted (in the direction perpendicular to the support wall 59 and the paper surface (Z direction)). ) Is slidably contacted. Further, the upper end of the cleaning state detection substrate 58 is supported by an upper presser holding member 56 that is an elastic body, and the lower end is in contact with the stepped bottom surface 55a of the lower presser rib 55 so as to be slidable in the Z direction.

A motion model of the cleaning state detection board 58 is shown in FIG. The cleaning state detection board 58 including the cleaning state detection sensor 32 is modeled with a mass point of weight m. The mass point of weight m is supported by the walls on both sides via an elastic body having an elastic constant k and a damper having a friction coefficient μ, and vibrates in the Z direction. An elastic body having an elastic constant k represents the upper presser holding member 56 whose elastic constant in the Z direction is k. Further, the damper having the friction coefficient μ represents the cleaning state detection substrate 58, the support wall 59 and the lower pressing rib 55 that slide in the Z direction, and the combined friction coefficient thereof is μ.

As is well known, the equation of motion when a vibration as an external force F is applied to the mass point of the weight m of the motion model of FIG. 10 in the Z direction can be expressed as follows, where time is t.
md ² Z / dt ² = −μdZ / dt−kZ + F (Formula 1)
The left side is the product of the second order derivative with respect to the mass m of the mass point and the time t of Z, the first term on the right side is the friction force, the product of the velocity of the mass point (the first order derivative with respect to the time t of Z) and the friction coefficient, the right side The second term is a restoring force, the product of the displacement in the Z direction from the equilibrium point of the mass point and the elastic constant, and the third term on the right side is an external force representing vibration, which is a periodic force that varies sinusoidally.

Equation 1 results in the following differential equation:
d ² Z / dt ² + 2bdZ / dt + (ω ₀ ) ² Z = F ₀ cos (pt) (Formula 2)
here,
2b = μ / m (Formula 3)
(Ω ₀ ) ² = k / m (Formula 4)
F = mF ₀ cos (pt) (Formula 5)
It is. As shown in Equation 5, the external force F is a vibration that changes sinusoidally at an angular frequency p (2π times the frequency of the external force F).

The solution of Equation 2 is as follows.
Z = Aexp (−bt) cos (ωt + α) + Bcos (pt−β) (Formula 6)
here,
ω ² = (ω ₀ ) ² −b ² (Expression 7)
B = F ₀ / √ ((ω ₀ ) ² −p ² ) ² + ( ² bp) ² ) (Formula 8)
tan (β) = 2 bp / ((ω ₀ ) ² −p ² ) (Formula 9)
It is. Exp in the first term on the right side of Equation 6 represents an exponential function with e as the base.

  The first term on the right side of Equation 6 is a general solution when there is no external force F, and represents the natural vibration (or free vibration) of the motion model of FIG. The angular frequency is ω, which is determined by m, k, and μ as expressed in Equation 7. The second term on the right side of Equation 6 is a special solution due to the external force F and represents forced vibration that vibrates at the same angular frequency p as the external force. The natural vibration of the first term on the right side decays exponentially with time regardless of the initial condition of motion, so that only the second term remains after a certain period of time. The attenuation of the natural vibration of the first term on the right side is caused by the friction coefficient μ according to Equation 3.

The amplitude B of the forced vibration in Expression 8 causes so-called resonance that increases (maximum) in the vicinity of p = ω _{0 because} b is small when the friction coefficient μ is small. As b increases, the maximum degree of resonance (sharpness of resonance) decreases. When the angular frequency p of the external force F is larger than ω ₀ , the amplitude B of the forced vibration attenuates in inverse proportion to the square of p according to Equation 8. On the other hand, as will be described later, in order to suppress the detection of vibrations not accompanied by the operation during cleaning, it is desirable to reduce the friction coefficient μ. Then, when the angular frequency p of the external force F is smaller than ω ₀ , the amplitude B of the forced vibration can be approximated to F ₀ / ω ₀ ² from Equation 8, and becomes a substantially constant value regardless of the value of p. . Therefore, in order to suppress the detection of vibrations that are not accompanied by the operation during cleaning, it is desirable to reduce the value of ω ₀ .

Here, the vibration accompanying the operation during cleaning is caused by the movement of the user's hand hose 3 in the front-rear direction (Z direction), and the period of this vibration (the time required for the hand hose 3 to reciprocate in the front-rear direction) is about It is considered to be about 1 to several seconds. Therefore, the angular frequency of vibration accompanying the operation during cleaning is about 0 to 6 [rad]. On the other hand, the lowest frequency among the frequencies of the electric blower 9, the rotating brush, and the rotating brush driving electric motor 19 during which cleaning is interrupted is considered to be vibration caused by the rotation of the rotating brush. If this rotation speed is 10 times / second, the angular frequency of vibration associated with the rotation of the rotating brush during the cleaning operation interruption is about 60 [rad]. Therefore, in order to suppress the detection of vibration during the cleaning operation interruption, it is desirable to select the value of ω ₀ smaller than 60. For this purpose, it is necessary to decrease the elastic constant k or increase the mass m as shown in Equation 4. In a vacuum cleaner that is required to be reduced in weight, it is not desirable to increase the mass m, and it is preferable to decrease the elastic constant of the upper pressing holder 56 that is an elastic body.

When the cleaning state detection substrate 58 is fixed to the housing of the hand hose 3 by screwing or bonding, the elastic body that supports the cleaning state detection substrate 58 becomes the housing of the hand hose 3 itself. The elastic constant of the housing of the hand hose 3 is remarkably larger than the elastic constant of urethane which is the upper presser holder 56, and the value of ω ₀ is also larger in the former than in the latter. Therefore, rather than fixing the cleaning state detection substrate 58 to the housing of the hand hose 3, the amplitude B of the forced vibration due to the high frequency external force is smaller when the upper holding holder 56 is supported. In other words, the vibration during the cleaning operation interruption, which is an external force having a high frequency, is absorbed by the upper pressing holder and is not easily transmitted to the cleaning state detection substrate 58 and the cleaning state detection sensor 32. As a result, it is possible to suppress detection of vibrations that are not accompanied by an operation during cleaning.

  During the cleaning operation, the hand hose 3 operated by the user undergoes a reciprocating motion in the front-rear direction (Z direction), and the time (cycle) required for the hand hose 3 to reciprocate in the front-rear direction is about 1 second to several seconds. . The cleaning state detection sensor 32 detects the vibration due to the reciprocating motion, and a signal of voltage change to the microcomputer 29 is output via the cleaning state detection sensor unit 31. Receiving this signal, the microcomputer 29 determines that it is currently performing a cleaning operation, and controls the operation set by the operation switch 8 for the electric blower 9 and the electric motor 19.

  Next, when the cleaning operation is interrupted while the electric blower 9 and the electric motor 19 are continuously driven, the vibration transmitted to the hand hose 3 is suppressed from being transmitted to the cleaning state detection board 58 and the cleaning state detection sensor 32, and the cleaning state is detected. The movable contact piece 40 in the sensor 32 is stationary in the operation space 64. Then, a voltage signal having no level change is output to the microcomputer 29 via the cleaning state detection sensor unit 31. Receiving this signal, the microcomputer 29 determines that the cleaning operation is currently suspended, and controls the electric blower 9 and the electric motor 19 to reduce or stop the supply power.

  In addition, when the cleaning operation is determined to be interrupted and the electric blower 9 and the electric motor 19 are controlled to reduce or stop the supply power, the user operates when the cleaning operation is started again. The hand hose 3 is reciprocated in the front-rear direction (Z direction) again. The cleaning state detection sensor 32 detects the vibration due to the reciprocating motion, and a signal of voltage change to the microcomputer 29 is output via the cleaning state detection sensor unit 31. The microcomputer 29 that has received this signal determines that the cleaning operation has been resumed, and controls the operation set by the operation switch 8 for the electric blower 9 and the electric motor 19.

  In the electric vacuum cleaner configured as described above, the cleaning state detection sensor unit is supported via the elastic body with respect to the housing of the hand hose, and the elastic constant of the elastic body is that of the housing of the hand hose. Since it is smaller than the elastic constant, it is possible to suppress detection of vibration during the cleaning operation interruption, which is vibration having a frequency higher than that of the hand hose during the cleaning operation.

  Moreover, since the cleaning state detection sensor has a movable body that is displaced based on the direction of movement of the hand hose during the cleaning operation of the vacuum cleaner, the vibration of the cleaning state detection sensor can be detected with a simple configuration.

  In addition, the hand hose is provided with a damper means for suppressing the movement of the cleaning state detection sensor unit based on the movement of the hand hose during the cleaning operation of the vacuum cleaner. It is possible to efficiently detect the movement of the cleaning state detection sensor unit with respect to vibration which is a certain external force.

  The cleaning state detection sensor unit is supported on both sides, one side is slidably supported with a guide wall provided on the inner wall of the hand hose, and the other side is supported by an elastic body, and the cleaning state detection sensor is opposed to the gap with a gap. An electrode, and a movable contact piece having electrical conductivity that is slidable with the electrode or rollable in an operation space formed by the electrode and a side surface of the electrode continuous to the electrode periphery. Opposing to the direction perpendicular to the direction of movement of the hand hose during the cleaning operation, the operation space is configured to have a substantially cylindrical shape whose diameter direction is longer than the height direction in which the electrodes are the bottom surface and the top surface, respectively. The vibration of the cleaning state detection sensor can be detected with a simple configuration.

  FIG. 13 shows table values stored in advance in the microcomputer 29 (storage means) for the microcomputer 29 to determine whether or not the operation switch 8 has been pressed. Based on this table value, it is determined which switch of SW1 to SW4 is pressed. That is, using this table value, the operation content of the operation switch 8 is determined, and the cleaning state is determined from the signal of the cleaning state detection sensor unit 31. Further, whether or not the hose 4 is connected to the cleaner body 5 is also determined based on this table value.

  FIG. 14 shows voltage signal waveforms at points A and B shown in FIG. 11 and shows a state where the hose 4 is connected to the cleaner body 5 and the operation switch 8 is not pressed. The voltage signal waveform at point A is obtained by superimposing the signal voltage of the operation switch 8 and the signal voltage of the cleaning state detection sensor 32.

When the cleaning state detection sensor 32 repeats ON and OFF states, a signal voltage of 1.01 V to 1.53 V is output. The output waveform is output to the cleaning state detection means 33. In the cleaning state detection means 33, the comparator CP outputs a voltage waveform at point B with reference to the ON / OFF determination threshold (1.25V) of the comparator CP. The ON / OFF determination threshold is a voltage obtained by dividing the DC voltage of the constant voltage power supply 28 by R2 and R3. When a voltage higher than the ON / OFF determination threshold (1.25V) of the comparator CP is generated, the output of the comparator CP becomes 0V, and when a voltage lower than the ON / OFF determination threshold (1.25V) of the comparator CP is generated. The output of the comparator CP is 5V.

Thus, by superimposing a signal voltage of the signal voltage and the cleaning state detection sensor 32 of the operation switch 8, so sending a signal to the whip hose 3 or et sweep dividing machine body 5 side, the signal line may be two. That is, one is a signal line of a common potential, and is a line connected to the resistance side of the operation switch 8 in the block of the hose 4 + the hand hose 3 in FIG. The other is a line connected to the switches SW1 to SW4 of the operation switch 8, and a signal voltage is superimposed on this line. Therefore, one signal line can be reduced, and an inexpensive vacuum cleaner can be obtained.

FIG. 15 is a diagram illustrating a method for detecting the signal voltage of the cleaning state detection sensor unit 31.
A method for detecting a signal voltage (pulse) will be described.
The microcomputer 29 (control means) increments the variable every time the falling edge of the signal voltage is detected, counts the number of pulses, and determines the number of signal voltages (pulses) every 100 ms (predetermined time). Whether or not the cleaning operation is performed is determined based on whether the number of signal voltages (pulses) is equal to or greater than a predetermined value (second reference value) or lower than a predetermined value (first reference value). When the state determination criteria for the presence / absence of the cleaning operation are satisfied continuously for a predetermined number of times (third reference value, fourth reference value) or more, it is determined that the cleaning operation is interrupted, or the cleaning being interrupted is performed. It is determined that the operation has been resumed, and the control of the electric blower 9 and the electric motor 19 of the suction tool 1 is changed.

  While the electric blower 9 is being driven and the electric motor 19 of the suction tool 1 is being driven, the microcomputer 29 (control means) determines that the cleaning operation is interrupted, and the drive of the electric blower 9 and the suction tool 1 is reduced or stopped. A first reference value to be determined, and a second reference value that determines that the cleaning operation that has been determined to be interrupted has been resumed, and that reduces the drive of the electric blower 9 and the electric motor 19 of the suction tool 1 to a state before the stop or stop. These reference values are stored in the microcomputer 29 (storage means).

The conditions for determining that the cleaning operation is interrupted are set as follows, for example.
The threshold value (first reference value) for the number X of signal voltages (pulses) is set to 11. X <11 (Condition 1)
The threshold (third reference value) for the number of times of continuous satisfaction of the judgment condition is set to 15. Y ≧ 15 (Condition 2)
That is, this condition determines that the operation is interrupted when the number of times that the number of signal voltages (pulses) is less than 11 times every 100 ms (predetermined time) is satisfied 15 times continuously.

The determination that the cleaning operation has been resumed is set as follows, for example.
The threshold value (second reference value) for the number X of signal voltages (pulses) is set to 2. X ≧ 2 (Condition 3)
The threshold value (fourth reference value) of the determination condition continuous satisfaction count Y is set to 4. Y ≧ 4 (Condition 4)
In other words, this condition is that when the number of times that the number of signal voltages (pulses) has become 2 or more every 100 ms (predetermined time) is satisfied four times in succession, the cleaning operation that has been determined to be interrupted resumes. Is determined.

  The third reference value and the fourth reference value are also stored in the microcomputer 29 (storage means).

  Thus, the first reference value (= 11) is set larger than the second reference value (= 2). Further, the third reference value (= 15) is set larger than the fourth reference value (= 4). Therefore, the judgment that the cleaning operation is interrupted due to erroneous detection of the cleaning state detection sensor unit can be suppressed, and the criteria for restarting the cleaning is loose from the cleaning operation that is interrupted, so that the cleaning operation can be resumed immediately, and A vacuum cleaner is obtained.

Next, the operation of the control means will be described using a flowchart.
FIG. 16 shows that the microcomputer 29 (control means) determines that the cleaning operation is interrupted while the electric blower 9 is driven and the electric motor 19 of the suction tool 1 is driven, and the electric blower 9 and the electric motor 19 of the suction tool 1 are driven. It is a flowchart explaining the control which reduces or stops.

When SW2 is turned on (S1), strong ECO operation is started (S2), and the electric motor 19 of the suction tool 1 is operated (S3). Then, a cleaning state detection sensor non-detection timer is started (S4) so that the cleaning state detection sensor 32 does not detect vibrations of the electric blower 9 and the electric motor 19 whose operations at the start of operation are not stable. In S5, it is determined whether the timing of the undetected timer has ended. This time measurement (non-detection time) is 10 seconds. If it has not ended, it continues until the timing of the undetected timer ends. When the non-detection time has elapsed, the process proceeds to S6, and the cleaning state detection sensor non-detection timer is cleared.

  After the process of S6, the process proceeds to S7, where the comparator output signal count process (detection of the falling edge) is started. Next, it progresses to S8 and the measurement of 100 ms (predetermined time) is started. Next, it progresses to S9 and determines progress of 100 ms (predetermined time). After the elapse of 100 ms (predetermined time), the process proceeds to S10, and the count value X of the comparator output signal generated within 100 ms (predetermined time) is compared with the first reference value. Next, the process proceeds to S11, and the number of times Y that satisfies condition 1 continuously in S10 is compared with the second reference value. If it is determined in S11 that the condition 2 is satisfied, the process proceeds to S12. In S12, it is determined whether or not the ECO power down course has been changed. The ECO power down course is a control in which the cleaning operation is determined to be interrupted, and the output of the electric blower 9 is uniformly reduced to 100 W regardless of the setting of the operation switch 8. If it is not changed to the ECO power down course, the process returns to S8. If changed, an ECO power down course changing process is performed (S13), the output is changed to 100W (S14), and the rotation of the motor is stopped.

  FIG. 17 is a flowchart for explaining the control for determining that the cleaning operation that has been determined to be interrupted has been resumed, and reducing or returning the drive of the electric blower 9 and the electric motor 19 of the suction tool 1 to the state before the stop.

Cleaning operation is determined to suspended, when the state (S16 to S18) to reduce or stop the driving of the electric blower 9 and suction tool 1 of the electric motor 19, electric control of the dynamic air blower 9 or the motor 19 is changed . Then, immediately after the control is changed, the cleaning state detection sensor non-detection timer is started (S19) in order to prevent the cleaning state detection sensor 32 from detecting vibrations of the electric blower 9 and the motor 19 whose operations are not stable. In S20, it is determined whether the timing of the undetected timer has ended. This time measurement (non-detection time) is 10 seconds. If it has not ended, it continues until the timing of the undetected timer ends. When the non-detection time has elapsed, the process proceeds to S21, and the cleaning state detection sensor non-detection timer is cleared.

  After the process of S21, the process proceeds to S22 to start the comparator output signal count process (detection of a falling edge). Next, it progresses to S23 and the measurement of 100 ms (predetermined time) is started. Next, it progresses to S24 and determines progress of 100 ms (predetermined time). After the elapse of 100 ms (predetermined time), the process proceeds to S25, where the count value X of the comparator output signal generated within 100 ms (predetermined time) is compared with the third reference value. Next, the process proceeds to S26, and the number of times Y that satisfies condition 3 continuously in S25 is compared with the fourth reference value. If it is determined in S26 that the condition 4 is satisfied, the process proceeds to S27. In S27, it is determined whether or not the ECO strong course has been changed. The ECO strong course is a control in which it is determined that the cleaning operation that has been determined to be interrupted has been resumed, and the output of the electric blower 9 is returned to the state before the reduction. If it is not changed to the ECO strong course, the process returns to S23. If it has been changed, the ECO strong course changing process is performed (S28), the output is changed (S29), and the rotation of the electric motor is started.

In the electric vacuum cleaner configured as described above, the electric blower is superimposed on the signal output from the operation switch for switching the driving state of the electric blower and the signal output from the cleaning state detection sensor unit for detecting the movement of the hand hose. and outputs to the control means for controlling the electric motor, and the cleaning state detecting means for separating the output signal of the cleaning state detection sensor unit from the superimposed signals, criteria for determining the cleaning status of the signal of the sweep divided state detection sensor unit since a storage means for storing operation contents of Ne及beauty operation switch provided in the sweep removal machine body side, since the configuration causes reduced one the number of signal lines is easy, difficult to fault at a low cost.

  Further, based on the output signal voltage of the cleaning state detection sensor unit while the electric blower is being driven and the suction tool is being driven, it is determined that the cleaning operation of the vacuum cleaner is being interrupted, and the electric blower and the suction tool are Since the first reference value for reducing or stopping the output of the electric motor and the second reference value for determining that the cleaning operation of the electric vacuum cleaner determined to be interrupted are stored, the interruption of the cleaning operation is stored. Increase the reference time for judgment and shorten the reference time for judgment of restart of cleaning operation, or shorten the reference time for judgment of interruption of cleaning operation and lengthen the reference time of judgment of restart of cleaning operation It is easy to use because it is possible to set a standard time for judgment.

  The control means detects the movement of the hand hose based on the number of pulses per predetermined time of the signal voltage output by the cleaning state detection sensor unit, compares the number of pulses with the first reference value, and the number of pulses is When the cleaning operation of the electric vacuum cleaner is determined to be interrupted when it is below the first reference value, and the number of pulses is compared with the second reference value, and the number of pulses is greater than or equal to the second reference value Since the first reference value is set to be larger than the second reference value, it is determined that the cleaning operation is interrupted due to erroneous detection of the cleaning state detection sensor unit. Judgment can be suppressed, and since the criteria for resuming cleaning from the interrupted cleaning operation are loose, the cleaning operation can be resumed immediately, which is convenient.

  In addition, the control means compares the number of pulses with the first reference value every predetermined time, and if the number of times the number of pulses is below the first reference value is continuously equal to or greater than the third reference value, It is determined that the cleaning operation of the vacuum cleaner is interrupted, and the number of pulses is compared with the second reference value every predetermined time, and the number of times that the number of pulses becomes equal to or greater than the second reference value is the fourth Since the cleaning operation of the vacuum cleaner that is determined to be interrupted when the reference value is equal to or greater than the reference value is determined to be resumed and the third reference value is set to be larger than the fourth reference value, cleaning due to erroneous detection of the cleaning state detection sensor unit The judgment during the operation interruption can be further suppressed, and since the criteria for restarting the cleaning from the interruption during the interruption is loose, the cleaning operation can be resumed immediately, which is convenient.

  In addition, the control means first compares the number of pulses with the first reference value after changing the control of the electric blower or the electric motor, or first compares the number of pulses with the second reference value. Since the counting of the number of pulses is started after a predetermined time has elapsed, vibration is not detected when the operation of the electric blower or the brush motor is not stable, so that the cleaning operation state can be correctly determined.

Embodiment 2. FIG.
In the first embodiment, the first reference value, the second reference value, the third reference value, and the fourth reference value are stored one by one in the microcomputer 29 (storage means). In the second embodiment, these reference values can be changed.

FIG. 18 is a diagram for explaining reference value changing means for changing the first reference value, the second reference value, the third reference value, and the fourth reference value.
In the microcomputer 29, a plurality of combinations of the first reference value, the second reference value, the third reference value, and the fourth reference value are stored in the storage unit 29a in advance. The storage means 29a is composed of a ROM. Then, the first reference value, the second reference value, the third reference value, and the fourth reference value used when the electric vacuum cleaner 100 is used are stored in the storage unit 29b. The storage means 29b is composed of a RAM. The reference value changing means 29c receives a signal voltage at point A in the block of the cleaner body 5 (see FIG. 11), and stores one of a plurality of combinations stored in the storage means 29a based on this signal voltage. The data is stored in the means 29b.

When the power cord 7 of the vacuum cleaner 100 is connected to the commercial AC power source 24, the voltage at the point A in the state where none of the switches (SW1 to SW4) is turned on in the operation switch 8 of FIG. Input to means 29c. In this case, the voltage at point A is a voltage obtained by dividing the DC voltage of the constant voltage power supply 28 by the resistor R6 of the operation switch 8 and the resistor R4 of the cleaner body 5. Based on this input voltage, the reference value changing unit 29c causes the storage unit 29b to store standard combination reference value data from among the reference value combinations stored in the storage unit 29a. While the electric vacuum cleaner 200 is in operation, the combination of the reference values stored in the storage unit 29b is used to determine whether the cleaning operation is interrupted or the cleaning operation is resumed.

If the combination of the reference values stored in the storage unit 29b is changed to another combination stored in the storage unit 29a according to the user's preference, the power cord 7 of the vacuum cleaner 100 is connected to the commercial AC power source 24. Sometimes, the power cord 7 is connected to the commercial AC power source 24 while turning on any one of the operation switches 8 (SW1 to SW4). Then, the voltage obtained by dividing the DC voltage of the constant voltage power supply 28 by the parallel combined resistance of the resistors R7 to R10 and the resistor R6 connected in series to the ON switch and the resistor R4 of the cleaner body 5 is a reference value. Input to the changing means 20c. This voltage is different from the voltage in a state where none of the switches (SW1 to SW4) is turned on. Based on this input voltage, the reference value changing unit 29c causes the storage unit 29b to store one set of reference value data from among the reference value combinations stored in the storage unit 29a. Since there are four operation switches, the voltage input to the reference value changing means 20c is also four different voltages, so that it can be selected from a combination of four reference values stored in the storage means 29a. While the electric vacuum cleaner 200 is in operation, the combination of the reference values stored in the storage unit 29b is used to determine whether the cleaning operation is interrupted or the cleaning operation is resumed. Thus, the first reference value, the second reference value, the third reference value, and the fourth reference value can be changed.

The storage means 29b is constituted by a RAM, and the data in the storage means 29b is updated based on the input voltage of the reference value changing means 29c every time the power cord 7 is connected to the commercial AC power supply 24. However, the storage means 29b is an EPROM. It may be configured. By configuring in EPROM, each time to connect the power cord 7 to a commercial AC power source 2 4, there is no need to ON either of the switches of the operation switch 8, which is convenient.

  As described above, since the first reference value changing means for changing the first reference value and the second reference value is provided, the reference time for determining the interruption of the cleaning operation corresponding to the user's preference can be adjusted. Easy to use.

  Further, since the second reference value changing means for changing the third reference value and the fourth reference value is provided, it is possible to adjust the reference time for determining the resumption of the cleaning operation corresponding to the user's preference, which is easy to use. Is good.

1 suction tool, 2 extension pipe, 3 hand hose, 4 hose, 5 vacuum cleaner body,
6 wheels, 7 power cord, 8 operation switch, 9 electric blower, 10 body case,
11 Lower case, 12 Upper case, 13 Hose connection port, 14 Body pipe,
15 Dust collector connection port, 16 Exhaust hole, 17 Main body inlet, 18 Dust collector fixing hole,
19 Electric motor, 20 Dust collector, 21 Dust collector inlet, 22 Dust collector outlet,
23 dust collector fixing part, 24 commercial AC power supply, 25 15A fuse,
26 4A fuse, 27 DC 12V power supply, 28 constant voltage power supply,
29 microcomputer (control means, storage means), 29a storage means,
29b storage means, 29c reference value changing means, 30 connecting parts,
31 cleaning state detection sensor part, 32 cleaning state detection sensor, 33 cleaning state detection means,
34 Triac for driving the main body, 35 Triac for driving the motor,
36 safety switch, 37 electrode, 37a electrode side surface, 37b electrode side surface,
37c electrode plane part, 37d lead wire, 38 electrode, 38a electrode side part,
38b electrode side surface, 38c electrode flat surface, 38d lead wire, 39 mold,
40 movable contact piece (movable body), 41 primary filter, 42 secondary filter,
51 connection pipe, 51a hose connection part, 51b extension pipe connection part, 52 grip part,
53 Lid, 54 Hose cover,
55 Lower holding rib (a part of damper means, guide wall), 55a Stepped portion lower surface,
55b Step side surface, 56 Upper holding fixture (elastic body), 57 Upper holding rib,
58 cleaning state detection board, 59 support wall (part of damper means), 64 operation space,
72 Rotating shaft, 72a Shaft cover, 72b Shaft cover, 72c Bearing,
73a Operation restriction rib (regulation means), 73b Operation restriction rib, 100 Vacuum cleaner.

Claims (5)

An electric blower that generates a suction force;
A vacuum cleaner body containing the electric blower;
A dust collecting unit for collecting dust contained in the air sucked by the electric blower;
A hand hose having one end connected to the main body of the vacuum cleaner and having a grip on the other end;
A suction tool having an electric motor that communicates with the hand hose and drives a rotating brush that sweeps up dust on the surface to be cleaned;
A cleaning state detection sensor unit that is provided in the hand hose and detects the movement of the hand hose;
An operation switch that is provided in the hand hose and switches the driving state of the electric blower;
Control means for controlling the electric blower and the electric motor based on a signal output from the operation switch and a signal output from the cleaning state detection sensor unit;
A storage means for storing a reference value for determining the cleaning state from the signal of the cleaning state detection sensor unit and the operation content of the operation switch;
A signal output from the operation switch and a signal output from the cleaning state detection sensor unit are superimposed and output to the control unit, and a signal output from the cleaning state detection sensor unit is separated from the superimposed signal. A cleaning state detection means and the storage means are provided on the cleaner body side ,
The control means detects the movement of the hand hose based on the number of pulses per predetermined time of the signal voltage output by the cleaning state detection sensor unit, compares the number of pulses with a first reference value, When the number of pulses is below the first reference value, it is determined that the cleaning operation of the vacuum cleaner is interrupted, and the number of pulses is compared with a second reference value, and the number of pulses is When it is above the reference value of 2, it is determined that the cleaning operation of the vacuum cleaner that is determined to be suspended has been resumed,
Setting the first reference value larger than the second reference value;
The control means compares the number of pulses with the first reference value every predetermined time, and when the number of times the number of pulses is below the first reference value is continuously greater than or equal to the third reference value. It is determined that the cleaning operation of the electric vacuum cleaner is interrupted, and the number of pulses is compared with the second reference value every predetermined time, and the number of times that the number of pulses becomes equal to or greater than the second reference value continues. If it is above the fourth reference value, it is determined that the cleaning operation of the vacuum cleaner that has been suspended is resumed,
The vacuum cleaner characterized in that the third reference value is set larger than the fourth reference value . An electric blower that generates a suction force;
A vacuum cleaner body containing the electric blower;
A dust collecting unit for collecting dust contained in the air sucked by the electric blower;
A hand hose having one end connected to the main body of the vacuum cleaner and having a grip on the other end;
A suction tool having an electric motor that communicates with the hand hose and drives a rotating brush that sweeps up dust on the surface to be cleaned;
A cleaning state detection sensor unit that is provided in the hand hose and detects the movement of the hand hose;
An operation switch that is provided in the hand hose and switches the driving state of the electric blower;
Control means for controlling the electric blower and the electric motor based on a signal output from the operation switch and a signal output from the cleaning state detection sensor unit;
A storage means for storing a reference value for determining the cleaning state from the signal of the cleaning state detection sensor unit and the operation content of the operation switch;
A signal output from the operation switch and a signal output from the cleaning state detection sensor unit are superimposed and output to the control unit, and a signal output from the cleaning state detection sensor unit is separated from the superimposed signal. A cleaning state detection means and the storage means are provided on the cleaner body side,
The control means detects the movement of the hand hose based on the number of pulses per predetermined time of the signal voltage output by the cleaning state detection sensor unit, compares the number of pulses with a first reference value, When the number of pulses is below the first reference value, it is determined that the cleaning operation of the vacuum cleaner is interrupted, and the number of pulses is compared with a second reference value, and the number of pulses is When it is above the reference value of 2, it is determined that the cleaning operation of the vacuum cleaner that is determined to be suspended has been resumed,
Setting the first reference value larger than the second reference value;
The control means first compares the number of pulses with the first reference value after changing the control of the electric blower or the electric motor, or first compares the number of pulses with the second reference value. The vacuum cleaner starts counting the number of pulses after a predetermined time elapses. The storage means determines that the cleaning operation of the vacuum cleaner is interrupted based on the output signal voltage of the cleaning state detection sensor unit while the electric blower is being driven and the suction tool is being driven, and the electric blower and A first reference value for reducing or stopping the output of the electric motor of the suction tool and a second reference value for determining that the cleaning operation of the electric vacuum cleaner determined to be suspended are stored. The vacuum cleaner according to claim 1 or 2 . The electric vacuum cleaner according to claim 1, further comprising first reference value changing means for changing the first reference value and the second reference value. Vacuum cleaner according to claim 1, further comprising a second reference value changing means for changing the third reference value and a fourth reference value.

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