JP2008079751A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner capable of sending control signals to a control part by utilizing a voltage waveform to be supplied from a cleaner body to the power source part of a suction port body or a communication pipe and surely transmitting the control signals. <P>SOLUTION: The suction port body 5 is provided with a suction port motor 13 for rotating a rotary cleaning body 18. The suction port motor 13 is operated with the suction port power source part 48 as a power source and an operation is instructed by the operation button 11 of a hand operation pipe 12. To the suction port power source part 48, a voltage is supplied from the cleaner body 1 through power lines 14 and 16. The waveform of the voltage supplied to the suction port power source part 48 is controlled by a main body controller 30 according to the operation of the operation button 11, and a suction port control part 50 controls the suction port motor according to the controlled voltage waveform. When the operation button 11 is operated, the main body controller 30 turns the voltage waveform to a zero voltage waveform for a prescribed period and then turns it to the voltage waveform corresponding to the operation. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner provided with an operation part to which power is supplied from a vacuum cleaner main body and a control device for controlling the operation part to a suction port or a communication pipe.

  As a conventional vacuum cleaner, for example, a vacuum cleaner described in Patent Document 1 is known. In this electric vacuum cleaner, for example, a hand circuit portion to which power is supplied from the vacuum cleaner main body through two wires in the hose is provided in a hose. The hand circuit unit is provided with output means for outputting such as display and notification. On the other hand, the vacuum cleaner main body is provided with dust amount detection means and signal transmission means for outputting main body information corresponding to the dust amount detected by the dust amount detection means to the wiring.

Then, the main body information is transmitted to the local circuit unit by, for example, phase-controlling the power supply voltage in accordance with the amount of dust. The hand circuit unit detects a power supply voltage waveform that is phase-controlled based on the main body information, and outputs the detection result to the output means. The output means displays or reports the main body information. According to this electric vacuum cleaner, it is possible to perform power supply and signal transmission to the local circuit unit without increasing the wiring of the hose.
JP 2001-104226 A

  By the way, various noises are superimposed on the wiring in the hose. Also in the electric vacuum cleaner described in Patent Document 1, noise is superimposed on a power supply voltage waveform for sending main body information from the vacuum cleaner main body to the hand circuit portion, and this noise is the main body from the cleaner main body to the hand circuit portion. May adversely affect the transmission of information. And, in order to display the main body information from the vacuum cleaner main body on the hand circuit section, the hand circuit section constantly detects the power supply voltage waveform based on the main body information, so the power supply with the noise superimposed on it Easy to detect voltage waveform. For this reason, there exists a problem that a hand circuit part tends to misdetect the power supply voltage waveform by which the phase control was carried out with the vacuum cleaner main body is a waveform different from this. In particular, in a situation where the power supply voltage waveform is controlled and the main body information is transmitted while achieving the function of supplying power, the power supply voltage waveform can be changed only within a limited range. Noise can lead to false detection.

  Therefore, the present invention solves the above-described problems, and can use the power supply voltage waveform from the cleaner body to the suction port body as an instruction signal to the operation unit provided in the suction port body and the like. It aims at obtaining the vacuum cleaner which can transmit a signal.

  In order to solve the above-described problems, the present invention provides a vacuum cleaner body including an electric blower, a communication pipe connected to the vacuum cleaner body and provided with a power line, and an operation of the electric blower connected to the communication pipe. A suction port body for sucking dust, a power supply unit provided in the suction port body and applied with a voltage from the cleaner body via a power line, and an operation unit provided in the suction port body and operated by the power supply unit The vacuum cleaner main body is provided with a main body control device for setting the voltage waveform applied to the power supply unit to a voltage waveform serving as an instruction signal to the operation unit after the application of the voltage to the power supply unit is stopped for a predetermined period. Further, a control device for controlling the operation unit based on the instruction signal is provided.

  According to the present invention, it is possible to send an instruction signal from the main body control device to the control device using the power supply voltage waveform applied to the power line in order to supply power from the vacuum cleaner main body to the suction port body. The detection accuracy of the instruction signal by can be improved.

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

  First, the configuration of the electric vacuum cleaner will be described with reference to FIGS. 1, 2, and 3. The vacuum cleaner has a vacuum cleaner body 1, a hose 3 having one end detachably connected to the suction port 2 formed in the vacuum cleaner body 1, and one end detachably connected to the other end of the hose 3. Extension pipe 4 and a suction port body 5 detachably connected to the other end of the extension pipe 4. The hose 3 and the extension pipe 4 constitute a communication pipe 6.

  The vacuum cleaner main body 1 is provided with a dust collection bag 8 as a dust collection portion communicating with the hose 3 via the electric blower 7 and the suction port 2, and the intake air of the electric blower 7 passes through the dust collection bag 8. Thus, the dust collection bag 8 separates and collects the dust. Further, a swivel wheel (not shown) that can turn freely is provided on the front lower surface of the main body 1, and a pair of large-diameter driven rear wheels 9 (only one is shown) are provided on the rear side surface of the main body 1.

  The hose 3 has a substantially cylindrical shape that can be bent and expanded, and has a hand operation tube 12 (hand operation unit) including an operation button 11 that sets an input of the handle 10 and the electric blower 7. . This operation button 11 also serves as a power switch for the suction fan motor 13 as an operation part provided in the electric blower 7 and the suction inlet body 5, and a plurality of types for making the electric blower 7 and the suction inlet motor 13 different drive states, respectively. The operation mode can be selected. Specifically, as shown in the figure, the operation button 11a for setting the stop of the electric blower 7 toward the direction of the extension pipe 4 from the hose 3 and the operation setting for strong input / weak input of the electric blower 7 are used. Operation buttons 11b and operation buttons 11c for setting forward / reverse / stop operation of the suction port motor 13 are sequentially arranged in a line.

  Further, the hose 3 is provided with a pair of power lines 14 for connecting a power source of the electric blower 7, for example, an AC power source and the suction port body 5. Further, the hose 3 is provided with a pair of signal lines 15 that connect a body control unit (described later) provided on the vacuum cleaner body 1 and the hand operation unit 12. One of the signal lines 15 shares the power line 14. The power line 14 and the signal line 15 are arranged from one end of the hose 3 to the other end.

  The extension pipe 4 includes a large diameter pipe 4a and a small diameter pipe 4b inserted into the large diameter pipe 4a. The extension pipe 4 can be extended and contracted by sliding the small diameter pipe 4b with respect to the large diameter pipe 4a. . A pair of power lines 16 are provided on the large diameter pipe 4 a and the small diameter pipe 4 b, and the power lines 16 are connected to a power line 14 provided on the hose 3.

  Next, the configuration of the suction port body 5 will be described in detail. The suction port body 5 is detachably attached to the distal end of the extension pipe 4 and is provided with a suction opening 5a for sucking dust on the surface to be cleaned. FIG. 2 is a plan view showing the configuration of the suction port body 5 as viewed from the cleaning surface (bottom surface) side. As shown in FIG. 2, a suction port motor 13 is disposed in the suction port body 5, and the rotation of the suction port motor 13 is transmitted to the rotary cleaning body 18 by the power transmission mechanism 17. Yes. A cleaning surface switch 19 that functions as a safety switch of the suction port motor 13 is disposed on the cleaning surface (bottom surface) side of the suction port body 5. As shown in FIG. 1, a notification unit 20 as an operation unit that notifies the dust collection amount of the dust collection bag 8 is provided on the upper surface of the suction port body 5. A suction port circuit board 21 on which the suction port control device 60 is mounted is incorporated in the suction port body 5.

  Next, a circuit configuration including the main body control device 30 built in the cleaner body 1 and the suction port control device 60 built in the suction port body 5 will be described with reference to FIG. Reference numeral 31 denotes a commercial AC power source. The main body control device 30 constitutes a part of a switching element driven by a control signal, for example, a bidirectional thyristor 32, a current fuse 33, and an electric blower 7, and is driven by an AC power source. A commutator motor (hereinafter simply referred to as a motor) 34 is connected in series.

  The electric blower 7 mainly includes a motor 34 and a fan 35 rotated by the motor 34. The motor 34 is, for example, a universal motor including a brush (not shown), an armature 34a having a commutator that slides on the brush, and field windings 34b and 34c. The fan 35 is a centrifugal fan connected to the rotating shaft of the motor 34, and when the fan 35 is rotated by the motor 34, the dust-containing air passes from the suction port body 5 through the extension pipe 4 and the hose 3 to the vacuum cleaner main body. Inhaled into 1. Reference numeral 36 denotes a zero-cross detection unit that detects a zero-cross point of the AC power supply voltage applied to the motor 34.

  Reference numeral 37 denotes a main body control unit that constitutes a part of the main body control device 30. The signal line 15 connected to the hand operation tube 12 is connected to the I / O unit 38, and instructions are given from the hand operation tube 12. A signal or the like is input to the I / O unit 38. Then, the main body control unit 37 takes in the zero cross timing of the commercial AC power supply 31 and takes in the instruction signal and the like from the local operation tube, and at the same time, the bidirectional thyristor 32 and the bidirectional thyristor 39 connected to the power line 14. A control signal serving as a trigger is output to the control terminal.

  Further, the resistance components 12a to 12c provided in series with the operation buttons 11a to 11c of the hand operation tube 12 have different resistance values, and the divided voltage value of the output voltage of the main body power supply unit 40 is set to the operation button. The circuit configuration (voltage variable circuit) for changing according to the 11 operation states is formed. And the main body control part 37 reads the partial pressure value which fluctuates according to the operation state of the operation button 11 periodically.

  The main body control unit 37 mainly includes a central processing unit 41, a memory 42, the I / O unit 38 described above, a timer 43, and the like. The memory 42 stores data such as a control program executed by the central processing unit 41 and necessary constants in advance, and a data storage area and work area for temporarily storing calculation data of the central processing unit 41 and the like. Used as.

  Reference numeral 44 denotes a current detection unit that detects a current flowing through the electric blower 7, and an output of the current detection unit 44 is input to the main body control unit 37. The main body control unit 37 controls the bidirectional thyristor 39 according to the output of the current detection unit 44. As a result, information related to the amount of collected dust in the dust bag 8 is sent to the suction port 5.

  Next, the structure of the suction inlet control apparatus 60 provided in the suction inlet body 5 is demonstrated. A suction power supply unit 48 as a power supply unit is connected to the commercial AC power supply 31 via a switching element driven by a control signal, for example, a bidirectional thyristor 39. The output timing of the control signal to the bidirectional thyristor 39 is controlled by the main body control unit 37 as described above. The suction port power supply unit 48 includes a rectifying unit 48a, a step-down unit 48b, a constant voltage unit 48c, and the like connected to the power line 16. The rectifying unit 48a is composed of, for example, a diode, and the constant voltage unit 48c is composed of, for example, an electrolytic capacitor. A bridge circuit 49 including four switching elements 49 a to 49 d such as transistors is connected to the rectifying unit 48 a, and the inlet motor 13 is connected to the bridge circuit 49. The switching elements 49 a to 49 d also function as switching means provided between the suction port power supply unit 48 and the suction port motor 13. Moreover, the suction inlet power supply part 48 functions also as a power supply of the suction inlet control part 50 as a control part.

  The suction port control unit 50 mainly includes a memory 51, a central processing unit 52, an I / O unit (not shown), and a timer 53, and uses, for example, a microcomputer. The memory 51 stores data such as a control program related to the operation of the operation unit provided in the suction port body 5 and necessary constants in advance. The suction port control unit 50 is connected to a power supply detection unit 54 that also functions as a detection unit that detects a voltage waveform applied to the power line 16 and the notification unit 20. The notification unit 20 includes a switching element 20a that is turned on / off by a control signal and a light emitting unit 20b such as an LED.

  The power supply detection unit 54 converts the voltage waveform supplied to the suction port power supply unit 48 into a detection signal, and outputs this detection signal to the suction port control unit 50. In response to this detection signal, the suction port controller 50 outputs an on / off control signal to each of the switching elements 49a to 49d of the bridge circuit 49 to control the rotational speed and direction of the suction port motor 13. In addition, an LED control signal is output to the switching element 20a. For example, when the suction port control unit 50 turns on the switching elements 49a and 49d, the suction port body 5 rotates (forward) so as to move forward with respect to the cleaning surface, and conversely, the switching element 49b When 49 and 49c are turned on, the suction port body 5 rotates (reverses) so as to move backward with respect to the cleaning surface.

  The main body control unit 37 supplies a control signal to the control terminal of the bidirectional thyristor 39 at a predetermined timing when an outlet is inserted and power is supplied from a commercial power supply, and the power supply unit 48 of the suction port body 5 is supplied. To supply power. As a result, the suction port control unit 50 is operable by being supplied with power.

  In such a configuration, when the operation button 11 of the hand control tube 12 is operated, a signal based on this operation is input to the main body control unit 37. When the signal indicates that the electric blower 7 is to be operated, a control signal is supplied from the main body control unit 37 to the control terminal of the bidirectional thyristor 32, and a voltage is generated between the terminals of the electric blower 7. Is driven. The main body control unit 37 can vary the input of the electric blower 7 by phase control by changing the output timing of the control signal supplied to the control terminal of the bidirectional thyristor 32.

  When the operation button 11 is operated and a signal indicating that the suction port motor 13 that is the operation portion of the suction port body 5 is operated is input to the main body control unit 37, the main body control unit 37 displays the state shown in FIG. ), The control signal to the control terminal of the bidirectional thyristor 39 is stopped for a predetermined period longer than a half cycle of the commercial AC power supply waveform, for example, three cycles of the commercial AC power supply. In other words, the main body control unit 37 sends a zero voltage waveform to the power supply detection unit 54 for a predetermined period. Thereby, application of the voltage to the suction inlet power supply part 48 is stopped for a predetermined period, and the power supply to the suction inlet body 5 is temporarily stopped. Thereafter, the main body control unit 37 outputs a control signal to the bidirectional thyristor 39 at a timing (off time) ta shown in FIG. Since the bidirectional thyristor 39 is conducted to the vicinity where the power supply voltage is inverted, the voltage shown in FIG. 4C is generated between the suction port terminals, that is, the power line 16.

  The power supply detection unit 54 converts the voltage shown in FIG. 4C to a suction port power supply detection signal shown in FIG. 4D and inputs the detection signal to the suction port control unit 50. The suction port control unit 50 measures the Low time of the detection signal, and recognizes it as an output stop section when the Low time is equal to or longer than a preset time tz. The suction port controller 50 measures the Low time tb immediately after the detection signal becomes High after this output stop period (hereinafter referred to as the Low time tb immediately after the output stop period) one or more times, and controls the main body. The instruction signal from the unit 37 is recognized. The power source detection unit 54 of this embodiment continues to output the detection signal Low while the power supply to the suction port body 5 is stopped. Further, the constant voltage unit 48c of the suction port power supply unit 48 is set so that the suction port control unit 50 operates at least for a period longer than the output stop period even when the power supply to the suction port body 5 is stopped. ing. In other words, the main body control unit 37 sets the predetermined time during which the application of voltage to the suction port body is stopped, and the output of the power supply unit after the application of voltage to the suction port body 5 is stopped. The time until the operation of the microcomputer constituting the mouth control unit 50 is assured is set to be shorter than the time required. Accordingly, the suction port control unit 50 can determine the output stop section even when the power supply from the main body control device 30 to itself is stopped.

  In this way, when the main body control unit 37 recognizes the operation of the operation button 11 of the hand control tube 12, it stops outputting the control signal to the bidirectional thyristor 39 for a time equal to or longer than the preset time tz, and the suction port The power supply to the body 5 is stopped, and then the timing (off time) ta shown in FIG. 4B is changed according to the operation of the operation button 11. The suction port control unit 50 measures the detection signal Low time, and when the measured value is determined to be equal to or longer than the preset time tz, the timer 51 measures the Low time tb immediately after the output stop period, and this measurement The operating state of the inlet motor 13 can be changed according to the value.

  Next, a specific operation related to the operation of the operation button 11 will be described.

  As described above, the operation button 11c is an operation button for setting the forward / reverse / stop operation of the suction port motor 13. When the main body control unit 37 detects the operation of the operation button 11c, the operation button 11c goes to the bidirectional thyristor 39. The output of the control signal is temporarily stopped. Thereafter, a control signal is periodically output a set number of times at the timing (off time) ta to the bidirectional thyristor 39 in accordance with the number of operations of the operation button 11c. The suction port control unit 50 recognizes that the Low time of the suction port power supply detection signal is equal to or longer than a preset time tz, and then measures the Low time tb immediately after the output stop period. Then, the operation state of the inlet motor 13 is determined by outputting an on / off control signal to each of the switching elements 49 a to 49 d of the bridge circuit 49. For example, every time the operation button 11c is operated, the operation of the suction port motor 13 is switched between normal rotation, reverse rotation, and stop.

  The operation of the main body control unit 37 at this time will be described based on the flowchart of FIG. The body control unit 37 periodically detects the operation of the operation button 11c in step S1. When detecting that the operation button 11c has been operated in step S1, the main body control unit 37 determines that the number of times the operation button 11c has been pressed is 3N-2 times (N = 1, 2, 3,. )). When the number of times of pressing is 3N-2, the main body control unit 37 stops the control signal to the bidirectional thyristor 39 for 30 ms as an output stop period in step S3. Thereafter, in step S4, a control signal to the bidirectional thyristor 39 is periodically output five times with an off time of 0.5 ms. As a result, a voltage waveform serving as an instruction signal to the suction port motor 13 is applied to the power line 16. Subsequently, in step S5, the main body control unit 37 outputs a control signal to the bidirectional thyristor 39 with zero off time. The output of the control signal with zero off time continues periodically every half cycle.

  Alternatively, when the number of times the operation button 11c is pressed is not 3N-2 times in step S2, the process proceeds to step S6, and it is determined whether or not the number of times the operation button 11c is pressed is 3N-1 times. When the number of times of pressing is 3N-1, the main body control unit 37 stops the control signal to the bidirectional thyristor 39 for 30 ms as an output stop period in step S7. Thereafter, in step S8, the control signal is periodically output five times to the bidirectional thyristor 39 with an off time of 1.0 ms. Subsequently, similarly, in step S5, the main body control unit 37 outputs a control signal to the bidirectional thyristor 39 with an off time of zero. The output of the control signal with zero off time continues periodically every half cycle.

  Alternatively, when the number of times the operation button 11c is pressed is not the 3N-1th time in step S6, the main body control unit 37 sends a control signal to the bidirectional thyristor 39 as an output stop period in step S9. Stop for 30ms. Thereafter, in step S10, the control signal is periodically output five times to the bidirectional thyristor 39 with an off time of 1.5 ms. Subsequently, similarly, in step S5, the main body control unit 37 outputs a control signal to the bidirectional thyristor 39 with an off time of zero. The output of the control signal with zero off time continues periodically every half cycle.

  Each value such as the value of the off time of the bidirectional thyristor 39 corresponding to each operation button 11c shown in FIG. 5, the time of the output stop section set by the main body control unit 37, the output stop section determination time tz of the suction port control unit 50, etc. Information for realizing the operating state is stored in advance in the memory 42 and the memory 51.

  Next, operation | movement of the suction inlet control part 50 corresponding to FIG. 5 is demonstrated based on the flowchart of FIG. First, in step S11, the suction port controller 50 determines whether or not the detection signal Low time t is a preset time tz, for example, 20 ms or more. When the detection signal Low time is equal to or longer than tz, the suction port control unit 50 recognizes that the output stop section is created by the main body control unit 37, and in step 12, outputs a control signal for turning off the switching elements 49a to 49d. The output is shut off from the connection between the suction port power supply 48 and the suction port motor 13. In step S13, the low time tb immediately after the output stop period, that is, the tb of the detection signal shown in FIG. 4D is measured to determine whether tb = 0.5 ms. When tb = 0.5 ms, the suction port control unit 50 outputs a control signal for turning on the switching elements 49a and 49d in step S14 to cause the suction port motor 13 to rotate forward.

  Alternatively, when the suction port controller 50 determines that tb = 0.5 ms is not satisfied in step S13 and tb = 1.0 ms is determined in step 15, the switching elements 49b and 49c are turned on in step S16. A control signal is output to reverse the suction port motor 13.

  Alternatively, if the suction port control unit 50 determines that tb = 0.5 ms is not satisfied in step S13 and tb = 1.0 ms is not satisfied in step 15, it is determined in step S17 that the switching elements 49a to 49d are connected. The control signal output is stopped, and the suction port motor 13 is stopped. Alternatively, when the detection signal Low time is not greater than or equal to the preset time tz in step S11, the suction port control unit 50 does not perform the operation state change process of the suction port motor 13 that is the operation unit.

  In addition, although detailed description is abbreviate | omitted about the point which operates the alerting | reporting part 20 provided in the suction inlet body 5 based on the detection result of the electric current detection part 44, the suction based on the operation button 11c as mentioned above Similar to the control of the mouth motor 13, the control is performed by controlling the waveform of the power supply voltage to the suction mouth motor 13.

  As described above, according to the vacuum cleaner of the present embodiment, the operation of the suction port motor 13 and the notification unit 20 is controlled by controlling the voltage waveform of the power source of the suction port motor 13 supplied from the cleaner body 1. Since the instruction signal is sent to the unit, the operating unit can be controlled from the cleaner body 1 without providing a signal line separately from the power lines 14 and 16.

  Further, the main body control unit 37 does not output the control signal for a predetermined time before outputting the control signal corresponding to the operation of the operation button 11 to the bidirectional thyristor 39. That is, the main body control device 30 sets the voltage waveform applied to the power lines 14 and 16 for a predetermined period to the suction port body 5 as a zero voltage waveform before sending an instruction signal to the power source detection unit 54 of the suction port control device 60. Turn off the power supply. And the suction inlet control part 50 can recognize that the voltage waveform immediately after this output stop period is an instruction signal from the main body control part 37, if the output stop period (power supply stop period) of this power supply voltage is recognized. . Therefore, the detection timing of the instruction signal becomes clear for the suction port control device 60, and it is not necessary to detect the instruction signal other than this detection timing. For this reason, since the opportunity to detect the instruction signal on which the noise is superimposed is reduced, the reliability of the instruction signal detection is significantly improved. In particular, in the case of a configuration in which an instruction signal is transmitted using a power line without using a dedicated signal line as in the present embodiment, since various noises are superimposed on the power line, the transmission timing on the transmission side is determined on the reception side. The effect of clarification is great. Moreover, since it is not necessary to perform the process after step S13 in FIG. 6 at times other than the transmission timing, the suction port control unit 50 reduces the processing load, and the other portion related to the suction port body 5 is reduced. Processing can be executed.

  In addition, the power supply detection part 54 of the suction inlet control apparatus 60 detects the voltage waveform of the power supply in order to recognize whether it is an output stop area also at the time other than the detection timing of the instruction signal described above. However, since it is only necessary to detect whether or not the zero voltage waveform is continuous for a predetermined period, erroneous detection due to noise is very rare. Therefore, as described above, the reliability of instruction signal detection is significantly improved as compared with the case where the instruction signal is always detected.

  Further, the main body control unit 37 sets the time of the output stop period of the control signal to the bidirectional thyristor 39 to be equal to or longer than a half cycle of the AC voltage supplied to the cleaner main body 1, so that the suction port control unit 50 is The distinction between times tz and tb shown in FIG. For this reason, the suction port control unit 50 can prevent erroneous recognition of the zero voltage waveform that is the output stop period and the voltage waveform that is the instruction signal to the suction port motor 13, and the suction port control from the main body control unit 37. The transmission reliability to the unit 50 is improved. In addition, the time of the output stop period of the control signal to the bidirectional thyristor 39 is determined based on the time from when the application of the voltage to the suction port body 5 is stopped until the output of the suction port power supply unit 48 becomes lower than the set value. Therefore, the suction port control unit 50 can be reliably operated. In addition, since the zero voltage waveform for transmitting the transmission timing of the instruction signal and the voltage waveform that becomes the instruction signal subsequent thereto are detected by the common power supply detection unit 48, the configuration is not complicated.

  Furthermore, when the suction port control device 60 recognizes the output stop period of the power supply voltage, it stops outputting the control signals to the switching elements 49a to 49d and turns off the switching elements 49a to 49d. For this reason, even if a voltage waveform serving as an instruction signal is applied to the suction port body 5, power is not supplied to the suction port motor 13. In addition, since the voltage waveform that becomes the instruction signal is detected in this state, the voltage waveform that becomes the instruction signal can be detected without being affected by the operation of the suction port motor 13, and thus the reliability of the instruction signal detection is further increased. Rise.

  Then, as shown in step 5 of FIG. 5, the main body control device 30 transmits the waveform of the commercial AC power source to the suction port body 5 after transmitting the voltage waveform serving as the instruction signal to the suction port body 5. Therefore, large electric power can be supplied to the suction port motor 13.

  Further, as a method of transmitting an instruction by the operation of the hand operating unit 12 to the suction port control unit 50 of the suction port body 5, the operation of the operation button 11 c is read by the main body control unit 37 and an instruction signal is transmitted to the suction port body 5. Therefore, it is not necessary to provide a control unit for sending an instruction signal from the hand operation unit 12 to the suction port body 5 in the hand operation unit 12. In other words, the operation of the operation button 11c provided on the hand operation unit 12 is read by the main body control unit 37 of the cleaner body 1, and the main body control unit 37 uses the power lines 14 and 16 to instruct the suction port body 5 Since the signal is being sent, the hose 3 can be connected without providing a new signal line for connecting the hand operating section 12 and the suction port body 5 and without providing a control section such as a microcomputer in the hand operating section 12. The suction port motor 13 of the suction port body 5 can be controlled by the hand operation unit 12.

  In addition, in the said embodiment, although what provided the operation | movement part in the suction inlet body 5 was demonstrated, you may provide in the hand operation pipe | tube 12 of a communicating pipe. In this case, a control device that detects an instruction signal from the cleaner body 1 and controls the operation unit is also provided on the hand control tube 12. Moreover, although the operation | movement part was demonstrated as the suction inlet motor 13 and the alerting | reporting part 20, it is not restricted to this, For example, the electromagnet for driving the beater which beats a to-be-cleaned surface, and the actuator for driving a cleaning member It is good.

  In addition, even when a signal is input from the current detection unit 44 to the main body control unit 37, the main body control unit 37 outputs a control signal to the thyristor 39 and adopts the same instruction signal transmission method as described above, so that the suction port The control unit 50 may control the suction port motor 13. Furthermore, in the said embodiment, although the case where the voltage waveform of the power supply supplied to the suction inlet body 5 from the cleaner body 1 was an alternating current waveform was demonstrated, it cannot be overemphasized that it may be a direct current waveform.

Moreover, in the said embodiment, although the suction inlet control part 50 measures the detection signal Low time tb directly corresponding to the OFF time ta of the voltage waveform used as an instruction | indication signal, it recognizes an instruction | indication signal, for example, It is also possible to recognize the instruction signal by measuring the detection signal High time tc.

The perspective view which shows the structure of the vacuum cleaner which concerns on embodiment of this invention. The top view which shows the structure of the suction inlet main body which concerns on embodiment of this invention. The figure which shows the circuit structure of the vacuum cleaner which concerns on 1st embodiment of this invention. The figure which shows the voltage and signal waveform of each part in the embodiment. The flowchart which shows the process which the main body control part of the embodiment performs. The flowchart which shows the process which the suction inlet control part of the embodiment performs.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner body 5 Suction port body 6 Communication pipe 13 Suction port motor (operation part)
14 Power line 16 Power line 30 Main body control device 60 Control device

Claims (5)

A vacuum cleaner body provided with an electric blower, a communication pipe connected to the vacuum cleaner body and provided with a power line, a suction port body connected to the communication pipe and sucking dust by operation of the electric blower, and the suction port A power supply unit that is provided on the body and to which a voltage is applied from the cleaner body through the power line, and an operation unit that is provided on the suction port body and operates by the power supply unit,
The vacuum cleaner main body is provided with a main body control device for setting a voltage waveform to be applied to the power supply unit as a voltage waveform serving as an instruction signal to the operation unit after the application of voltage to the power supply unit is stopped for a predetermined period.
The vacuum cleaner characterized by providing the control apparatus which controls the said operation | movement part based on the said instruction | indication signal in the said suction inlet body. A vacuum cleaner main body provided with an electric blower, a communication pipe connected to the vacuum cleaner main body and provided with a power line, a suction port connected to the communication pipe and sucking dust by operation of the electric blower, and the communication pipe And a power supply unit to which a voltage is applied from the vacuum cleaner body via the power line, and an operation unit that is provided in the communication pipe and operates by the power supply unit,
The vacuum cleaner main body is provided with a main body control device for setting a voltage waveform to be applied to the power supply unit as a voltage waveform serving as an instruction signal to the operation unit after the application of voltage to the power supply unit is stopped for a predetermined period.
A vacuum cleaner, wherein the communication pipe is provided with a control device that controls the operating unit based on the instruction signal.   2. The control device according to claim 1, further comprising: a detecting unit that detects a zero voltage waveform in which application of a voltage to the power supply unit is stopped for a predetermined period and detects a voltage waveform that serves as the instruction signal. The electric vacuum cleaner according to any one of 2 above.   The control device controls the operation unit by on / off controlling a switching unit provided in the suction port body, and detects the zero voltage waveform and turns the switching unit off to detect the instruction signal. The electric vacuum cleaner according to any one of claims 1 to 3, wherein a voltage waveform is detected.   The main body control unit has a predetermined time during which application of voltage to the suction port body is stopped longer than a half cycle of a voltage waveform of a commercial power supply, and after the application of voltage to the suction port body stops, the power source 5. The electric vacuum cleaner according to claim 1, wherein the electric vacuum cleaner is set to be shorter than a time until the output of the unit becomes equal to or less than a set value.

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