JPH0817757B2 - Electric vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Industrial field of application) The present invention controls the output of an electric blower in a vacuum cleaner body and the on / off state of an electric motor in a suction port body by a manual operation part. Regarding vacuum cleaners.

(Prior Art) As a conventional electric vacuum cleaner for controlling the electric motor in the suction port with this type of hand operation unit, for example, FIGS.
The configuration shown in the figure is known.

In FIG. 12, 1 is an AC power supply, and this AC power supply 1
Is connected to the electric blower 3 via the control unit 2, and the AC power supply 1 is connected via the step-down transformer 4 to the rectifying means 5 for rectifying the AC into a pulsating flow. Is connected to the hand opening / closing means 6 for turning the power on and off,
This hand opening / closing means 6 is a constant voltage means 7 for making the pulsating flow a constant voltage.
It is connected to the. Further, the constant voltage means 7 includes a resistor 8
Is connected to the hand permission control means 11 and is connected to the current detection means 12, and the current detection means 12 is connected to the hand permission opening / closing means 6 via a comparison circuit 13 for detecting ON or OFF.

The constant voltage means 7 is a manual setting means 14 for manually setting the output of the electric blower 3, a flow rate detecting means 15 for detecting the flow rate of wind in the air passage, and an electrical output of the flow rate detecting means 15. Detecting means 17 consisting of converting means 16 for converting into
It is connected to the. Then, the detecting means 17 via the amplifying means 18 is connected to the manual setting means 14 and the manual switching means 19 for switching between manual and automatic according to the output of the hand control means 11. It is connected to the trigger means 22 together with the zero-cross detection means 21 connected to the next winding, and the AC power supply 1 and the electric blower 3 are connected via the insulating means 23.
It is connected to the power control means 24 connected between.

Further, FIG. 13 shows the hand permission control means 11 connected to the circuit of the electric vacuum cleaner body shown in FIG.
A and B are connected to the terminals A and B of the current detecting means 12 of the electric vacuum cleaner body, respectively. Further, a protection means 31 for protecting the hand permission control means 11 from a surge or the like is connected between the terminals A and B of the hand permission control means 11.

Reference numeral 32 is an opening / closing means, and each of the opening / closing means 32 is composed of a strong opening / closing means 33, an automatic opening / closing means 34, a weak opening / closing means 35, and a cutting opening / closing means 36, which are operation switches. , 35, 36 are respectively connected to the heavy load means 38, the automatic load means 39, the weak load means 40 and the off load means 41 of the load means 37 for setting the load resistance value. The load means 38, 39, 40, 41 are connected to the terminal A, respectively, and the load means 38, 39, 40, 4 are connected.
The amplifying means 42 for amplifying the output of the load resistance value of 1 is connected to the strong amplifying means 43, the automatic amplifying means 44, the weak amplifying means 45, and the off amplifying means 46, respectively, and the off amplifying means 46.
A reset means 47 for resetting the power to off when the power is disconnected is connected to the.

Then, the respective amplification means 43, 44, 45, 46 are connected to the respective opening / closing means 33, 3
The storage contents of the strong storage unit 51, the automatic storage unit 52, the weak storage unit 53, and the cutting storage unit 54, which are the storage units of the storage unit 50 for storing the operation contents of 4, 35 and 36, are mutually exchanged. Is connected to a mutual reset means 55 for setting and resetting, and the mutual reset means 55 includes respective storage means 51, 52, 53, 54.
It is connected to the. In addition, each of these storage means 51, 52, 53, 5
A power backup means 56 for protecting the stored contents of the storage means 51, 52, 53, 54 from the power supply opening for a short time is connected to 4.

Then, each of the storage means 51, 52, 53 has a display means 57 for displaying the operated contents, and an overuse display means 58 and an automatic display means 59.
And a current varying means 61 that is connected to the weak display means 60 and sets a current value to the control unit 2 of the vacuum cleaner body.
Connected to the strong current varying means 62, the automatic current varying means 63, and the weak current varying means 64, respectively, and the permission control means 11
Is connected to the terminal B.

Further, an opening / closing means 66 is connected to terminals C and D of the control unit 2 of the vacuum cleaner main body and turns on and off the electric motor 65 of the suction port connected between the terminals E and F.

 Next, the operation of the above conventional example will be described.

The voltage from the AC power supply 1 is stepped down by the transformer 4 and rectified by the rectifying means 5. In addition, the hand opening / closing means 6 turns on / off the electric power based on the output of the comparison circuit 13 for judging the state of the hand control means 11 detected by the current detecting means 12. Then, the pulsating current is made into a constant voltage by the constant voltage means 25, and a constant voltage is supplied.

Further, when the automatic opening / closing means 34 of the hand control means 11 is operated, the automatic storage means 52 stores automatic, the automatic display means 58 displays and the automatic current changing means 63 sets the current and the electric It is detected by the current detection means 12 of the cleaner body. Then, in the case of automatic, the flow rate detecting means 15 detects the flow rate in the air passage, the converting means 16 converts it into an electrical output, and the amplifying means 18 amplifies it so that the wind has a constant pressure or flow rate. , Trigger by the trigger means 22. At this time, the zero-cross detector 21 detects zero volt. Then, the output of the electric blower 3 is controlled by insulating the insulating means 23 and giving a trigger output to the electric power control means 24 to control the electric power of the AC power supply 1 to control the input of the electric blower 3. .

Further, when the opening / closing means 33 for weakness or the opening / closing means for weakness 35 is operated by the hand operation means 11, the corresponding strongness display means 58 or weakness display means 60 is turned on and the manual setting means 14 is operated. Are set to the corresponding outputs and drive the trigger means 22 to drive the electric blower 3.

Also, when controlling the electric motor 65 of the suction port body, the opening / closing means
Operate 66.

However, the opening / closing means 32 for operating the electric blower 3 of the hand permission control means 11 and the opening / closing means 66 for operating the electric motor 65 of the suction port body are separate and independent, and the electric blower 3 is turned off. Even the electric motor of the suction mouth continues to rotate,
Further, the electric motor opening / closing means 66 of the electric motor 65 of the suction port body must be turned off, and the operation is complicated.

When the power plug is removed, the opening / closing means 32 of the electric blower 3 is reset to OFF, but the switch of the electric motor 65 of the suction port body is kept in the same state. There is a risk that only the electric motor 65 of will be driven.

Further, as an electric vacuum cleaner in which the electric motor 65 is turned off when the electric blower 3 is turned off, it is not publicly known, for example, Japanese Patent Application No. 61-61.
No. 101726 has been proposed.

As shown in FIG. 14, the electric vacuum cleaner described in Japanese Patent Application No. 61-101726 has a motor opening / closing means 66 and an insulation transmission means in the transmission path of the hand control means 11 shown in FIG. 13 to the main body of the electric vacuum cleaner. The means 67 are connected in parallel, and this insulation transmission means 67 is
It is connected to the electric section control means 68 provided in the power path to the power source 65 by, for example, a photo coupling.

This is to drive the electric motor 65 of the suction port body only when the electric blower 3 is driven and any current is applied to the transmission path. That is, the electric blower 3 is set to strong, automatic, or weak, and the electric motor 65 is driven only when current is flowing in the transmission path.

However, the structure described in Japanese Patent Application No. 61-101726 is not used when the brush electric motor 65 is used because the insulation transmission means 67 and the electric part opening / closing means 66 have different resistance values. The current value is different from that in the case, and particularly near the threshold value, the current detection means 12 may cause a reading error in the operation stage.

(Problems to be Solved by the Invention) As described above, in the configuration shown in FIG. 13, the operation is complicated because the opening / closing means of the electric motor of the suction port body and the opening / closing means of the electric blower are separate and independent. It has a problem that

Further, in the one disclosed in Japanese Patent Application No. 61-101726 shown in FIG. 14, the resistance value differs between the insulation transmission means and the electric section opening / closing means, so that the current detection means 12 may cause a reading error in the operation stage. I have a problem.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an electric vacuum cleaner that can perform control of an electric blower and an electric motor in an interlocking manner and that operates reliably.

[Structure of Invention]

(Means for Solving the Problem) An electric vacuum cleaner according to claim 1, wherein the electric vacuum cleaner body includes an electric blower and a control means having a power control means for controlling an output of the electric blower, and the electric vacuum cleaner. A suction port body having an electric motor connected to a commercial power source on the main body side via electric motor control means, and a hand control for connecting the control means via a two-wire transmission line to control the output of the electric blower and the drive of the electric motor. And a hose section having means, wherein the control means includes a hand power supply means for supplying power to the hand control means, a current detection means for detecting a current from the hand control means, and a current detection means. Output control means for controlling the electric power control means according to the output, wherein the hand control means is a blower opening / closing means for selecting an operation step of the electric blower, and an operation step of the electric motor. A motor opening / closing means for selecting, and a current varying means for setting the electric power from the manual power source means to a current value corresponding to the output from the blower opening / closing means and outputting the current to the current detecting means.
Insulation transfer means connected in parallel to the current varying means for controlling the motor control means for controlling the drive of the electric motor, and insulation transfer means connected in parallel to the insulation transfer means by operating the motor opening / closing means. And a constant current means connected in series to each of the insulation transmission means and the bypass means and in parallel with the current varying means to supply a constant current.

An electric vacuum cleaner according to claim 2, wherein the electric vacuum cleaner main body includes a control means having an electric blower and an electric power control means for controlling the output of the electric blower, and an electric motor control means for a commercial power source on the side of the electric vacuum cleaner. A suction port body having an electric motor connected to the control means, and a hose portion having a hand control means connected to the control means via a two-wire transmission line to control the output of the electric blower and the drive of the electric motor. However, the control means controls the power control means according to an output of the hand power supply means for supplying electric power to the hand control means, a current detection means for detecting a current from the hand control means, and an output of the current detection means. Output control means, the hand control means, the blower opening and closing means for selecting the operation stage of the electric blower, the motor opening and closing means for selecting the operation stage of the electric motor, A plurality of constant current means, each of which is provided corresponding to the blower opening / closing means, outputs constant currents having different current values to the current detecting means according to a selected operation stage, and is connected in series to the constant current means. Insulation transmission means for controlling the electric motor control means for controlling the drive of the electric motor, and bypass means connected in parallel to the insulation transmission means for controlling the insulation transmission means by operating the electric motor opening / closing means. Is.

(Operation) In the electric vacuum cleaner according to claim 1, a bypass means is connected in parallel to the insulation transmission means for controlling the electric motor control means, and the insulation transmission means is bypass-controlled by the bypass means, whereby the electric motor control means is provided. Even when controlling, the current value can be made constant by the constant current means when a current is flowing in the insulation transmission means and when the insulation transmission means is bypassed by the bypass means, that is, regardless of whether the electric motor is on or off. Since the current varied by the current varying means can be accurately read by the current detecting means, the electric blower is accurately controlled regardless of whether the electric motor is on or off.

The electric vacuum cleaner according to claim 2, wherein a bypass means is connected in parallel to an insulation transmission means for controlling the electric motor control means, and the insulation transmission means is bypass-controlled by the bypass means to control the electric motor control means. However, since the constant current means is connected in series to the bypass means and the insulation transmission means corresponding to the blower opening / closing means, a current flows through the insulation transmission means and a case where the insulation transmission means is bypassed by the bypass means. That is, regardless of whether the electric motor is on or off, since the current value can be made constant by the constant current means corresponding to the operation stage set by the blower opening / closing means, it can be accurately read by the current detecting means.
Accurately control the electric blower regardless of whether the electric motor is on or off.

(Embodiment) An embodiment of the electric vacuum cleaner of the present invention will be described below with reference to the drawings.

In FIG. 7, reference numeral 101 denotes a vacuum cleaner main body, which has a front handle 102 at a front portion of the vacuum cleaner main body 101, and a cover body 103 is pivotally mounted on a rear upper portion so as to be freely opened and closed. A component storage unit 104 is provided inside the cover body 103, and
A 105 and a round brush 106 are stored. An indicator 110 indicating the suction capacity of an electric blower 107 provided in the vacuum cleaner main body 101 is provided in front of the component storage section 104. Then, behind the indicator 110, light emitting diodes 111, 112, 113, 114 for display are provided to form a level meter 115. Further, a bumper 116 is provided on the peripheral surface of the vacuum cleaner body 101.

Further, a pair of wheels 117 and a slewing wheel are rotatably provided on the lower side of the electric vacuum cleaner body 101 on the rear sides of both side surfaces and the front side of the lower surface thereof, and a handle 118 is rotatably housed on the upper side. It is provided in. In addition, the vacuum cleaner body 10
A power supply cord 119 is provided at the lower end of the rear part of the unit 1, and the power supply cord 119 is wound and stored by pressing a cord reel button 120 provided at the upper end of the rear part.

Further, a main body connection portion 122 of a hose portion 121 is rotatably and detachably attached to the upper surface of the vacuum cleaner main body 101. At the tip of the hose main body 123 connected to the main body connecting portion 122, a gripping tube 125 is provided to which an extendable extension tube 124 is inserted and detachably inserted and connected. 126 are provided. In addition, in the extension pipe 124, an AC brush electric motor 1 as an electric motor is internally provided.
The connection pipe 129 of the suction port body 128 having a built-in 25 is removably attached, and the suction port body 128 may be the temple 105 or the round brush 10.
6 can be selectively exchanged and used.

Then, as shown in FIGS. 8 and 9, a circuit board 131 of the hand control means 130 is provided in the hand operation unit 126,
The hand operation part 126 is provided on a connection pipe 133 connected between the cover pipe 132 connected to the hose body 123 and the grip pipe 125, and a display board 134 is attached to the connection pipe 133. There is. Then, in the vicinity of, for example, a display of “strong” on the display plate 134, a normally open contact (for example, a product name tact switch) 141 having one circuit and one contact as an operation switch for varying the output of the electric blower 107 is operated. There is provided an operation button 142 for display and an indicator 143 configured to display the operation position of the operation button 142, which is formed of, for example, a light emitting diode. Similarly, in the vicinity of the display of "automatic", the operation button 145 of the automatic normally open contact 144 and the display 146,
An operation button 148 and a display 149 of the normally open contact 147 for the sofa are provided near the display of "weak", and an operation button 151 of the normally open contact 150 for the curtain is provided near the display of "OFF". ing. It should be noted that no display corresponding to the off operation button 151 is provided.

Further, on the circuit board 131, an operation button 152 for turning on the motor and an operation button 153 for turning off the motor, which are the motor opening / closing means of the brush motor 125, are provided near the operation button 142 for heavy use and the indicator 143 for heavy use. It is provided in. Further, the operation button 152 for turning on the motor and the operation button 153 for turning off the motor are provided with normally-open contacts 154 and 155, respectively, and in the vicinity of the operation button 153 for turning on the motor, a light emitting diode 156 for the motor as an electric motor display means. Is provided.

Next, a block diagram of the rotation of the vacuum cleaner body 101 of the above embodiment will be described with reference to FIG.

In FIG. 3, reference numeral 161 denotes a commercial AC power supply, which is connected to the control means 162 and is also connected to the electric blower 107 to control the output of the electric blower 107.

In this control means 162, a primary winding 164 of a step-down transformer 163 is connected to a commercial AC power supply 161, and a secondary winding 165 of this transformer 163 is connected to a rectifying means 166 for rectifying an alternating current into a pulsating current. Further, the rectifying means 166 is connected to a manual power source means 167 and a constant voltage means 168 for converting into constant voltages having different voltage values. For example, the hand power supply means 167 is connected to the terminal A for supplying a current to the hand control means 130. A protection means 170 for protecting the hand control means 130 is connected between the terminals A and B, and a hand control means 130 is connected to the terminal B.
A current detecting means 171 for detecting a current from the microcomputer is connected to a central processing unit 172 composed of a microcomputer.

Further, the hand-held power supply means 167 is connected to a constant current means 173 for holding a constant current value, and this constant current means 173 has an air passage detecting means for detecting a pressure or a flow rate in the air passage of the vacuum cleaner body 101. 174 and a conversion means 175 for converting the detection value of the wind path detection means 174 into an electrical output.
Is connected. The detecting means 176 is connected to the central processing unit 172 via the amplifying means 177 for amplifying the output of the detecting means 176. Further, since the constant voltage means 168 drives the central processing unit 172, it is connected to the central processing unit 172 as it is, and an initialization means 178 for returning the progress of the program of the central processing unit 172 to the initial state when the power is turned on again. It is connected to the central processing unit 172 via.

Further, the secondary winding 165 of the transformer 163 has a commercial AC power supply 16.
Zero cross detection means 179 for detecting the zero volt of 1 and discriminating the frequency of 50 Hz and 60 Hz is connected,
The zero-cross detecting means 179 is connected to the central processing unit 172. Further, the hand power supply means 167 is connected to the display means 181 for displaying the output of the electric blower 107 or the operation position of the hand control means 130 via the current limiting means 180.
A central processing unit 172 is connected to 81. Further, a sounding means 183 for notifying an abnormality such as clogging from the central processing unit 172 via a sounding driving means 182 is connected.

Then, the central processing unit 182 is connected to the output control means 186 including the driving means 184 and the insulating means 185, and the output control means 186 is connected to the power control means between the commercial AC power supply 161 and the electric blower 107. 187 is connected.

Further, the central processing unit 172 is constructed as shown in FIG.

The zero-cross detection means 179 is via the zero-cross input means 191, the initialization means 178 is via the initialization input means 192, and the current detection means 171 and the amplification means 177 are alternating inputs from the current detection means 171 and the amplification means 177. It is connected to the input switching means 193 for switching to, and is connected to the data carrying means 195 for reading and reading each data through the A / D converting means 194 for digitizing. The display means 181 is connected to a display opening / closing means 196 for turning on / off the display, and the data carrying means 195 is connected to a storage means 199 composed of a data storage means 197 and a temporary storage means 198. Reference numeral 199 stores data to be converted into an output corresponding to the suction force set with respect to the output of the current detection means 171 and the output of the conversion means 175 and stored. The data transfer means 195 is connected to the arithmetic processing means 200 for calculating the output from the input switching means 193 and the storage means 199 to the set suction capacity. A display opening / closing means 196 is connected to the data conveying means 195, and a display output means 201 and a sound generation driving means for operating the display opening / closing means 196.
182 is connected, the sound output means 202 for operating the sound drive means 182 and the drive means 184 of the output control means 202 are connected, and the output means 203 for operating the drive means 184 are connected respectively.

Next, the hand control means 130 will be described with reference to FIG.

In FIG. 1, reference numeral 211 denotes a blower opening / closing means whose one end is grounded. The blower opening / closing means 211 selects an operation stage of the electric blower 107, and a cutting blower opening / closing means for cutting selection.
212, automatic blower opening / closing means 213 for automatic selection, weak blower opening / closing means 214 for weak selection, and strong blower opening / closing means 215 for strong selection. Reference numeral 216 denotes a motor opening / closing means having one end grounded. The motor opening / closing means 216 selects an operation stage of the brush motor 125. And a drive motor opening / closing means 218 for selecting the drive of the drive motor 125.

The blower opening / closing means 211 and the electric motor opening / closing means 216
Is connected to the logic processing means 219, and the logic processing means 219 is set to be interlocked or non-interlocked according to the operation stage set by the blower opening / closing means 211 and the operation stage set by the electric motor opening / closing means 216. As shown in FIG. 2, the logic processing means 219 connects the cutting motor opening / closing means 216 to the cutting blower opening / closing means 212 with the diode 220 and the automatic blower opening / closing means 213.
Therefore, the diode 221 is connected to the driving motor opening / closing means 218.

Also, the logic processing means 219
The blower signal load means 222 for generating a signal output corresponding to the blower open / close output from the blower open / close means 211 which has been subjected to the logic processing by the blower signal load means 222 is connected.
Are the blower signal load means 223 for setting the cutoff of the electric blower 107, the automatic blower signal load means 224 for setting the automatic operation of the electric blower 107, and the weak blower signal load means 225 for setting the weak operation of the electric blower 107. And a strong blower signal load means 226 for setting a strong operation of the electric blower 107.

Further, the blower signal load means 222 has a blower amplification means 227 for amplifying the signal output from the blower signal load means 222.
The blower amplifying means 227 is connected to the blower signal load means 223 and the blower signal load means 2
The blower amplifying means 228 for amplifying the output of 23, and the blower amplifying means 22 for automatic which is connected to the blower signal load means 224 for automatic and which amplifies the output of the blower signal load means 224 for automatic
9. The weak blower signal loading means 225 is connected to the weak blower signal loading means 225 and amplifies the output of the weak blower signal loading means 225, and the strong blower signal loading means 226 is connected to the strong blower signal loading means 226. The blower amplification means 231 for amplifying the output of the. Further, the blower storage means 233 for storing the output of the blower signal load means 222 in the blower amplification means 227 via the blower mutual reset means 232.
The blower storage means 233 is connected to the blower storage means 233 that stores the output of the blower signal load means 223.
4, the output of the automatic blower signal load means 224 is stored in the automatic blower storage means 235, the weak blower signal load means 225 is stored in the weak blower storage means 236 and the strong blower signal load means 226 is output. Strong blower storage means to remember 2
Composed of 37. Then, when any signal of the blower signal load means 222 is re-input to any of the blower storage means 233, the blower mutual reset means 232 performs mutual reset.

Further, the fan storage means 233 is connected to a blower output buffer means 238 whose one end is grounded, and the blower output buffer means 238 is an automatic blower output buffer means 239 connected to the automatic blower storage means 235, for weak use. It comprises weak blower output buffer means 240 connected to the blower storage means 236 and strong blower buffer means 241 connected to the strong blower storage means 237. When the output of the cutting fan storage unit 234 is not used, an output buffer unit corresponding to the cutting storage unit 234 may not be provided as shown in the embodiment.

Further, the blower output buffer means 238 is connected to a current varying means 246 that outputs a current corresponding to the output of the blower storage means 233 to the current detecting means 171 of the vacuum cleaner body 101. Blower storage means 239
The automatic current varying means 247 for outputting the automatic current corresponding to the output of, the weak current varying means 248 for outputting the weak current corresponding to the output of the weak blower storage means 240, and the strong blower storage means 241. It is composed of a heavy-duty current changing means 249 which outputs a heavy-duty electric current corresponding to the output of the above.

Also, the logic processing means 219
The motor signal load means 251 for generating a signal output corresponding to the motor open / close output from the motor open / close means 216 subjected to the logic process in FIG.
Is composed of a cutting motor load means 252 for setting the brush motor 125 off and a driving motor load means 253 for setting the drive of the brush motor 125.

Further, the motor signal loading means 251 includes a motor amplifying means 254 for amplifying a signal output from the motor signal loading means 251.
Is connected to the cutting motor signal loading means 252 and the cutting motor signal loading means 2 is connected to the cutting motor signal loading means 252.
A cutting motor amplifying means 255 for amplifying the output of 52 and a driving motor amplifying means 256 connected to the driving motor signal loading means 253 and amplifying the output of the driving motor signal loading means 253.
It consists of Further, the electric motor amplification means 254 is connected to the electric motor storage means 258 through the electric motor mutual reset means 257, and the electric motor storage means 258 stores the output of the cutting electric motor signal load means 252. 259 and drive motor storage means 260 for storing the output of the drive motor load means 253. Then, when any one of the signals of the motor signal load means 251 is re-input to any of the motor storage means 258, the mutual reset is performed by the blower mutual reset means 257.

Then, the cutting-off electric motor storage means 259 of the electric motor storage means 258.
Is connected to the disconnecting motor output buffer means 26, one end of which is grounded.
1 is connected. Note that no motor output buffer means is connected to the drive motor storage means 260.

Further, the blower display means 242 has a motor display means 271 for displaying the drive of the brush motor 125 and the brush motor 1
Insulation transfer means 272 for controlling 25 are connected in series to terminal A
It is connected to the. Further, according to the output of this insulation transmission means 272, the brush motor 125 is
The brush electric motor control means 273 for controlling the electric power of is connected to the brush electric motor control means 273 via the terminal D to the control unit 162 of the electric vacuum cleaner body 101.
One end of the brush motor 125 is connected through the terminal F,
Terminal E and terminal C are provided at the other end of the brush motor 125.
The control unit 162 of the electric vacuum cleaner body 101 is connected via the.

Further, bypass means 274 for turning off the motor display means 271 and the insulation transmission means 272 is connected in parallel with the motor display means 271 and the insulation transmission means 272, and this bypass means 2
The cutting motor output buffer means 261 is connected to 74.

Further, a constant current means 275 for supplying a constant current is connected to the insulation transfer means 272 and the bypass means 274 on the side of the allowable power source means 167.

Further, a protection means 276 for protecting the hand control means 130 from a surge whose one end is grounded is connected to the terminal A, and the terminal B is grounded.

Next, a specific circuit of the above embodiment will be described with reference to FIGS.

The control means 16 is connected to the commercial AC power supply 161 via a fuse 281.
The triac 282, which is a bidirectional control element of the second power control means 187, and the electric blower 107 are connected in series, and the snubber circuit 285 for protection of the triac 282 including the resistor 283 and the capacitor 284 is connected to the triac 282. . Further, terminals C and D are provided at both ends of the commercial AC power supply 161. The electric blower 107 is connected with a noise prevention circuit 289 for preventing noise, which is composed of capacitors 286, 287, 288 connected Δ at both ends of the commercial AC power supply 161 via the electric blower 107 and a fuse 281.

A transformer 163 is connected to the commercial AC power supply 161 via a fuse 281.
The primary winding 164 is connected to the primary winding 164, and a series circuit of a protective fuse 291 and a varistor 292 is connected in parallel to the primary winding 164. Further, the secondary winding 165 of the transformer 163 is connected to a diode bridge 299 composed of diodes 295, 296, 297, 298 as the rectifying means 166, and the DC output side of the diode bridge 299 has, for example, the hand power supply means 167.
A 3-terminal regulator 301 for a constant voltage of 12V is connected. A smoothing electrolytic capacitor 302 and a capacitor 303 connected in parallel are connected between one end of the three-terminal regulator 301 and the negative electrode of the diode bridge 299, and the other end of the three-terminal regulator 301 and the diode bridge 299 are connected. Between the negative electrode of the electrolytic capacitor 304 and the capacitor
305 are respectively connected.

Further, the DC output side of the diode bridge 299 is connected to a 3-terminal regulator 306 for constant voltage of, for example, 5 V of the constant voltage means 168, and a capacitor is provided between one end of the 3-terminal regulator 306 and the negative electrode of the diode bridge 299. 307
And a smoothing electrolytic capacitor 308 and a capacitor 309 are connected between the other end of the three-terminal regulator 306 and the negative electrode of the diode bridge 299. Further, the collector of an NPN transistor 312 having a bias resistor 311 between the emitter and the base is connected to the positive output side of the diode bridge 299, and the base of the transistor 312 has a bias resistor 313 between the emitter and the base. NPN
Shaped transistor 314 is connected, this transistor 314
The emitter of is connected to the negative side of the diode bridge 299.

Also, the base of transistor 312 and transistor 3
The collector of 14 is a 3-terminal regulator 301 via a resistor 315.
In addition, the base of the transistor 314 is connected to the central processing unit 172 via the resistor 316. In addition, the transistor 312
An electrolytic capacitor 317 for smoothing and a capacitor 318 are connected in parallel between the emitter of the transistor and the emitter of the transistor 314. A terminal A is connected to the negative electrode of the diode bridge 299 via a varistor 321 and a capacitor 322 connected in parallel to the protection means 170, and a terminal B is connected via a varistor 323 and a capacitor 324 connected in parallel. Are connected. A resistor 171 as current detecting means is connected between the terminal B and the negative electrode of the diode bridge 299, and a resistor 325 is connected between the terminal B and the central processing unit 172.

An electrolytic capacitor 331 for smoothing is connected between the three-terminal regulator 306 and the diode bridge 299. Further, the three-terminal regulator 306 is connected to the inverting input terminal of the operational amplifier 173 as the constant current means, and the resistor 332 is connected to the non-inverting input terminal. Further, detecting means 176 is provided between the output terminal of the operational amplifier 173 and the resistor 332.
This detecting means 176 is formed by diffusing a semiconductor such as silicon and equivalently constitutes a resistance bridge composed of resistors 333, 334, 335, 336. Resistance among these
A variable resistor 337 as an offset gain for gain adjustment is connected between 333 and a resistor 334, and a slider of this variable resistor is connected via a resistor 338 to a non-inverted input terminal of an operational amplifier 339 of an amplification means 177. The connection point of the resistors 335 and 336 is connected to the inverting input terminal of the operational amplifier 339 via the resistor 340, and the resistor 341 is connected between the inverting input terminal and the output terminal.

Further, a resistor 343 connected from the inverting input terminal of the operational amplifier 173 to the output terminal of the operational amplifier 342 forming a voltage follower circuit is connected to the non-inverting input terminal of the operational amplifier 339. Further, the output terminal of the operational amplifier 339 is connected to the inverting input terminal of the operational amplifier 345 via the resistor 344, and the non-inverting input terminal is connected to the operational amplifier 342 via the resistor 346.
The output terminal of is connected. A resistor 347 and a semi-fixed resistor 348 for adjusting the amplification degree are connected between the inverting input terminal and the output terminal of the operational amplifier 345, and the output terminal is connected to the central processing unit 172 and the diode via the resistor 349. The negative electrode of bridge 299 is connected.

Further, from the three-terminal regulator 306 to the resistor 351, the Zener diode 352 and the resistor 353 of the initialization means 178.
It is connected to the negative electrode of the diode bridge 299 through. The base of an NPN transistor 354 is connected to the connection point between the cathode of the Zener diode 352 and the resistor 353, and the collector of the transistor 354 is connected to the three-terminal regulator 301 of the first constant voltage means 167 via the resistor 355. The base of the NPN transistor 356 is the emitter of the transistor 354, the collector of the transistor 356 is the positive electrode of the diode bridge 299 via the central processing unit 172 and the resistor 357, and the emitter of the transistor 356 is the diode bridge 299. The negative electrodes are connected to each other.

Further, both ends of the secondary winding 165 of the transformer 163 are connected to the light emitting diodes 362 and 363 connected in anti-parallel with the zero-cross detecting means 179 via a resistor 361, and the phototransistor 364 is connected to the light emitting diodes 362 and 363 by a photocup. It is ringed. The collector of the transistor 364 is the three-terminal regulator 306 of the constant voltage means 168, and the emitter of the transistor 364 is the central processing unit 172 and the resistor 365.
The negative electrode of the diode bridge 299 is connected via. A three-terminal regulator 301 is connected to one end of a resistor 180 as a current limiting means, and the anodes of the light emitting diodes 111, 112, 113, 114 connected in parallel to the display means 181 are connected to the other end, and the central processing unit is connected to the cathodes of these light emitting diodes 111, 112, 113, 114. 172 is connected.

The central processing unit 172 is connected to one end of the resistor 371 of the tone generation driving means 182, the base of a transistor 373 having a bias resistor 372 between the emitter and the base is connected to the other end, and the emitter of this transistor 373 is connected to the emitter. The negative pole of the diode bridge 299 is connected to the collector of this transistor 373, and the buzzer 376 of the sounding means 183 having a resistor 375 in parallel.
3 terminal regulator 301 of the power supply means 167
Is connected. In addition, capacitors 381, 3 are connected in parallel between the central processing unit 172 and the negative electrode of the diode bridge 299.
82 is connected, and a resistor 383 and an oscillator 384 for the clock of the central processing unit 172 are connected in parallel between the connection point of the central processing unit 172 and the capacitor 381 and the connection point of the central processing unit 172 and the capacitor 382. Has been done.

Further, the central processing unit 172 has a resistance of the output control means 186.
A transistor 393 having a bias resistor 392 is connected between the emitter and the base via 391.
The negative electrode of the diode bridge 299 is connected to the emitter of the transistor 393, and the collector of the transistor 393 is connected to the light-emitting diode 394 of the insulating means 185 and the three-terminal regulator 301 of the power supply means 167 via the resistor 395. Further, the light emitting diode 394 is electrically isolated and connected to the photo triac 396 by photo coupling, and the photo triac 396 is connected to the connection point between the triac 282 and the electric blower 137 via the gate of the triac 282 and the resistor 397. Has been done.

Next, a specific circuit of the hand control means 130 shown in FIG. 1 will be described with reference to FIG.

Zener diode 401 connected in parallel between terminals A and B
And a protection means 276 consisting of an electrolytic capacitor 402 is connected.

At the terminal A, a blower signal load means 223 for cutting, which is composed of a load resistor 404 having a noise prevention capacitor 403 in parallel, an automatic fan signal load means 224, which is made up of a load resistor 406 for which a noise prevention capacitor 405 is arranged in parallel, a noise prevention capacitor 407
One end of each of the weak blower signal load means 225 including a load resistor 408 having a parallel line and a load resistor 410 having a noise prevention capacitor 409 in parallel is connected.

Then, between the other end of the load resistor 404 of the blower signal load means 223 for disconnection and the terminal B, a parallel resistor 41 for preventing malfunction is provided.
Between the other end of the load resistor 406 of the blower signal load means 224 for automatic blower and the terminal B, there is provided a parallel resistor 412 for preventing malfunctions, which is composed of a normally open contact 150 having 1 in parallel. Between the other end of the load resistor 406 of the automatic blower opening / closing means 213 and the weak blower signal load means 226 formed of the normally open contact 144 and the terminal B, a parallel resistance for preventing malfunction is provided.
A blower opening / closing means 21 for weak use consisting of a normally open contact 147 having 413
4 and the other end of the load resistance 410 of the high-power blower signal load means 226 and the terminal B are connected in parallel in parallel with each other to prevent malfunction.
High-power blower opening / closing means 21 including a normally open contact 141 having 414
5 is connected. An initializing capacitor 415 is connected in parallel to the parallel resistor 411 and the normally-open contact 152 of the cutting fan opening / closing means 212.

Further, the cutting motor signal load means 2 including a load resistor 422 having a capacitor 421 for noise prevention in parallel at the terminal A 2
It is connected to one end of a drive motor signal load means 253 including a load resistor 424 having a capacitor 52 for noise prevention and a capacitor 423 for noise prevention in parallel. Further, the cutting motor signal load means 25
A normally-open contact 155 having a bypass resistor 425 for preventing malfunction in parallel is connected between the other end of 2 and the terminal B, and between the other end of the driving motor signal load means 253 and the terminal B. Normally-open contact 154 having bypass resistor 426 in parallel for preventing malfunction
Is connected. Further, a load resistor 428 having a capacitor 427 for preventing noise and a resistor 429 for preventing malfunction are connected in series from the terminal A to the terminal B.

Furthermore, 431 and 432 are integrated circuits (ICs).
32 is a blower amplification means 227, a blower mutual reset means 23
2, blower storage means 233, blower output buffer means 238,
It has functions as a motor amplifying means 254, a motor mutual reset means 257, a motor storage means 258 and a motor output buffer means 261. And terminal 8 and terminal 1 of IC431
0, a terminal 11, a terminal 16, a terminal 15 and a terminal 16 of the IC 432 are connected to a terminal A and a terminal B via a capacitor 433 for initialization, and the terminal 1 of the IC 431, the IC 43
A terminal B is connected to the terminals 1 and 8 of 2.

Further, at the connection point between the load resistance 284 of the cutting blower signal load means 223 and the normally open contact 150 of the cutting blower opening / closing means 212, an IC43
1 terminal 12, automatic blower signal load means 224 load resistance 40
At the connection point between 6 and the normally open contact 144 of the automatic blower opening / closing means 213, the terminal 13 of the IC 431, the load resistance 408 of the weak blower signal load means 225, and the normally open contact 147 of the weak blower opening / closing means 214 are connected. The point is the terminal 14 of the IC 431, the load resistance 410 of the high-power blower signal load means 226 and the normally-open contact 141 of the high-power blower opening / closing means 215 are connected to the terminal 15 of the IC 431, respectively, and the cutting motor signal load means is connected. 252 load resistance 422 and switching motor opening / closing means
The connection point of the 271 with the normally open contact 155 is the terminal 13 of the IC432, and the connection point of the load resistance 426 of the driving motor signal load means 253 and the normally open contact 154 of the driving motor opening / closing means 218 is the terminal 1 of the IC432.
4 is connected. Further, the terminal 14 of the IC431 and the terminal 11 of the IC432 are connected, the terminal 12 of the IC431 and the terminal 10 of the IC432 are connected, and the diode 435 and the terminal of the IC431 are connected between the terminal 12 of the IC431 and the terminal 12 of the IC432. A diode 436 is connected between 13 and the terminal 12 of the IC432.

Further, the connection point of the normally open contact 150 of the cutting blower opening / closing means 212 and the load resistance 404 of the cutting blower signal loading means 223 to the normally open contact 155 of the cutting motor opening / closing means 217 and the load of the cutting motor signal loading means 252 The diode 220 is connected between the connection point of the resistor 422 and the automatic blower opening / closing unit 213.
The connection point between the normally open contact 144 and the load resistance 406 of the automatic blower signal load means 224 and the normally open contact 154 of the drive motor opening / closing means 218 and the load resistance 42 of the drive blower signal load means 253
A diode 221 is connected between the four connection points, and the diode 220 and the diode 221 form a logic processing unit 219.

Further, at the terminal 4 of the IC 431, the automatic display means 243 including the light emitting diode 146 having the compensation resistor 441 in series, the terminal 3
Is connected to a weak display means 244 including a light emitting diode 149 having a compensation resistor 442 in series, and a strong display means 245 including a light emitting diode 143 having a compensation resistor 443 in series is connected to the terminal 2, and these light emitting diodes 143, 146, 149 are connected. Is connected to a light emitting diode 271 as a motor display means and a light emitting diode 444 of an insulation transmission means 272. A phototriac 445 is photocoupled to the light emitting diode 272 of the insulation transfer means 272. The phototriac 445 is connected via a resistor 446 to one end of a triac 273 as a motor control unit and a gate. The electric vacuum cleaner body 101 is connected to the triac via the terminal D, and one end of the electric brush blower 125 is connected to the triac. The other end of the electric brush blower 125 is connected to the terminal E and the terminal. The vacuum cleaner body 101 is connected via C.

Further, the terminal 7 of the IC432 has a resistor 249 as a strong current changing means, and the terminal 6 has a resistor 2 as a weak current changing means.
48 is connected, and terminal A is connected to these resistors 249 and 248. In this embodiment, the automatic current changing means 247
No special provision is made, and the light emitting diode 146 and the compensation resistor of the automatic blower display means 243 are used as the automatic current changing means 247.
I am using 441.

Further, a PNP type transistor 453 having a bias resistor 452 between the base and emitter of the bypass means 274 and a emitter / collector connected to both ends of the light emitting diodes 271 and 272 is connected to the terminal 7 of the IC 432 via a resistor 451. There is.

Further, two so-called constant current diodes (for example, model E-45 manufactured by Ishizuka Electronics Co., Ltd.) connected in parallel are connected to the anode of the light emitting diode 272 and the emitter of the transistor 453.
2) a constant current means 275 comprising 461 and 462;
A transistor driving resistor 463 connected in parallel to 75 is connected.

 Next, the operation of the above embodiment will be described.

First, when the power is turned on, the voltage of the commercial AC power supply 161 is stepped down by the transformer 163, rectified by the rectifying means 166, and then made constant by the constant voltage means 168, and the content of the central processing unit 172 is changed by the initializing means 178. Initialize.

Further, it is converted to a constant voltage by the hand power supply means 167 and output to the hand control means 130 via the transmission line. Then, when the commercial AC power supply 161 has a phase angle of 0 ° or 180 °, the zero-cross detecting means 179 detects a zero-cross which is a voltage of zero volt, and the output of the current detecting means 171 is input through the input switching means 193.
The value is output to the A / D conversion unit 194, and the output current value is averaged and stored in the temporary storage unit 198. This current value is "strong"
If it is determined that the TRIAC 187 trigger time is set to the value corresponding to the output of "strong", "weak"
When it is determined that the TRIAC 187 is set to, the trigger time of the triac 187 is set to a value corresponding to the output of "weak". When it is determined that the setting is “OFF”, the triac 187 is not triggered.

Further, when it is determined that the output voltage is automatically set, the average value of the output voltage from the wind path detecting means 174 is set, this average value is compared with the data in the data storage means 197, and the arithmetic processing means 200 calculates To process. Then, the output control means 186 outputs a trigger according to the set triac trigger time.

In addition, the hand control means 130 includes, for example, the electric blower 107
To set the output of “Strong” to “Strong”
Is pressed, the strong blower opening / closing means 215 is operated, the strong blower signal load means 226 is operated, and the strong blower amplifying means 231 is amplified, and the previous memory is reset by the blower mutual resetting means 232, and the strong blower is reset. It is stored in the storage means 237.
Then, the high-powered light emitting diode 143 of the manual operation unit 126 is turned on by the output of which the constant current means 275 is turned into a constant current, and the level meter 115 of the vacuum cleaner body 101 turns on all the light emitting diodes 111, 112, 113, 114, for example. Is displayed. ”

Furthermore, when the weak operation button 148 is pressed, the electric blower 107 outputs a weak output by the same operation, and the manual operation unit 1
The weak light emitting diode 149 of 26 turns on, and the level meter 115 of the vacuum cleaner main body 101 lights only one light emitting diode 111 indicating "weak". In the present embodiment, the automatic current varying means 247 is not provided, and the current set by the constant current means 275 is detected by the current detecting means 171 and automatically set.

Further, when the output of the electric blower 137 is set to automatic, when the automatic operation button 145 is pressed to make it automatic, the automatic display 146 of the manual operation unit 126 lights up,
The light emitting diodes 111, 112, 113, 114 of the electric vacuum cleaner body 101 blink according to the output of the electric blower 107.

Further, when the brush electric motor 125 is turned on, when the operation button 152 of the driving electric motor opening / closing means 218 is closed, the driving electric motor signal load means 253 is operated and the automatic blower signal load is caused by the diode 221 of the logic processing means 219. Actuating means 224. Further, the driving electric motor signal loading means 253 is actuated to drive the driving electric motor amplifying means 256.
The drive mutual memory means 257 stores the fact that the brush electric motor 125 is driven in the drive electric motor storage means 257 and resets the stored contents of the cutting electric motor storage means 259, and the base of the transistor 453 of the bypass means 274. A light emitting diode 271 indicating that the electric motor 125 for brushes is driving the current that is stopped by the bypass means 274 and the light emitting diode 32 of the insulation transfer means 272.
Pour into 4. The current flowing through the light emitting diode 271 and the insulation transmission means 272 or the bypass means 274 is converted into a constant current by the constant current means 275 and always has a constant current value. Then, the photo-coupled photo triac 445 is turned on to turn on the triac 273 to drive the brush electric motor 125. In addition, when the automatic blower signal load means 224 is driven, the electric blower 107 is driven in an automatic state.

Conversely, when the brush motor 125 is turned off, the cutting motor signal load means 252 is operated by closing the operation button 153 of the cutting motor opening / closing means 217. Further, when the cutting electric motor signal load means 252 is operated, the cutting electric motor amplifying means 255 amplifies, and the electric motor mutual resetting means 257 stores in the cutting electric motor storage means 259 the fact that the brush electric motor 125 is turned off. The light-emitting diode 271 indicating that the brush motor 125 is driven by resetting the stored contents of the driving motor memory means 260, outputting by the motor output buffer means 261, giving a base current to the transistor 453 of the bypass means 274 and indicating that the brush motor 125 is driving, Insulation transfer means 272 light emitting diode 45
The current flowing through 4 is bypassed to bypass means 274.

Then, the light emitting diode 444 of the insulation transmission means 272 is turned off, the phototriac 445 is not triggered, the triac 273 is turned off to turn off the brush motor 125, and the light emitting diode 444 is turned off to turn off the brush motor 1.
Indicates that 25 is off.

In addition, when the operation button 151 for cutting is pressed, the cutting fan opening / closing means 212 is operated, and the cutting fan signal loading means 2 is operated.
23 is operated, and the cutting motor signal load means 252 is operated by the diode 220 of the logic processing means 219.
As a result, the electric blower 107 stops and the brush electric motor 125 also stops, and both the display means 181 indicating the drive of the electric blower 107 and the light emitting diode 271 indicating the drive of the brush electric motor 125 are turned off.

Also, when clogging occurs, the sound generation driving means 182
The buzzer 316 of the sound producing means 13 is driven by.

According to the above-described embodiment, the operating current in the hand control means 130 is used to flow to the insulation transmitting means 272 or the bypass means 2.
Since it is performed by bypassing to 74, the brush motor 125 can be controlled without greatly changing the operating current. Further, the constant current means 275 keeps the current value constant both when the insulation transfer means 272 and the light emitting diode 271 are driven and when the bypass means 274 is driven, so that the signal current does not change when the brush motor 125 is used or not used. Current detection means 17
The reading error of 1 disappears, the electric blower 107 can be accurately driven, and the current is constant, so the light emitting diode 143,
Even if there are variations in 146, 149, etc., a constant brightness can be obtained. Further, since the brush electric motor 125 is controlled by the operating current of the hand control means 130 without directly controlling the power supply power of the brush electric motor 125, the configuration becomes easy.

In addition, the drive display of the brush motor 125 is a hand control means 1.
Since 30 operating currents are used, the configuration can be facilitated.

Next, another embodiment will be described with reference to FIGS. 10 and 11.

In the embodiment shown in the block diagram of FIG. 10, the current varying means 246 and the constant current means 275 are removed from the block diagram shown in FIG. 1, and the blower output buffer means 238 and the blower display means 2 are shown.
A constant current means 471 for supplying a constant current is provided between the constant current means 471 and 42 and a load means 475 is provided between the constant current means 471 and the terminal A. The constant current means 471 is an automatic constant current means 472 provided between the automatic blower output buffer means 239 and the automatic blower display means 243, a weak blower output buffer means 240, and a weak blower display means. It comprises a weak constant current means 473 provided between the strong blower output buffer means 241 and a strong blower output buffer means 474 provided between the strong blower output buffer means 241 and the strong blower display means 245. .

The specific circuit of this block diagram is as shown in FIG. 11, and from the circuit shown in FIG.
275 and resistor 463 have been removed and shorted, as well as capacitor 427, resistors 428,429 and diodes 435,436.
Is removed and opened, and the connection of the terminals 11 and 10 connected to the terminals 14 and 15 of the IC 431 is removed. The terminal 10, terminal 11 and terminal 12 of the IC 432 are connected to the terminal B via the terminal A and the capacitor 433, and the automatic constant current is provided between the light emitting diode 146 as the automatic blower display means and the terminal 4 of the IC. Constant current diode 472 as a means,
Light emitting diode 149 and IC 431 as weak blower display means
A constant current diode 473 as weak constant current means is provided between the terminals 3 and a light emitting diode 474 as strong constant current means is provided between the light emitting diode 143 as the weak blower display means and the terminal 2 of the IC 431. The light emitting diodes 472, 473 and 474 set different constant current values.

Further, these constant current diodes 472, 473, 474 respectively have resistors 475, 476, 477 for brightness adjustment in series,
A connection point between the constant current diode 472 and the light emitting diode 146,
Connection point between the constant current diode 473 and the light emitting diode 149,
At the connection points of the constant current diode 474 and the light emitting diode 143, load resistors 481 and 48 serving as load means 475 are provided, respectively.
2,483 are connected and connected to the terminal A. The resistors 481, 482, 483 for these loads may be a common resistor instead of being separately provided as in the block diagram shown in FIG. In this case, the resistance value is set to operate at the maximum set current, and when the current is other than the maximum set current, the current value is limited by the corresponding one of the constant current diodes 472, 473, 474 to set the current.

Then, the constant current diode 472 sets the current value of the signal current during automatic setting, the constant current diode 473 sets the current value of the signal current during weak setting, and the constant current diode 474
Use to set the signal current value at high setting. The electric blower 107 is controlled according to the current value of the signal current.

According to the above embodiment, since the constant current diodes 472, 473, 474 are connected corresponding to each operation stage, the light emitting diodes 146, 149, 143 and the load resistors 481, 4 for each operation stage are connected.
Since the constant current can be sent as a signal current without being affected by the variation of 82, 483, the operation becomes reliable.

〔The invention's effect〕

According to the electric vacuum cleaner of claim 1, the bypass means is connected in parallel to the insulation transmission means for controlling the electric motor control means, and the insulation transmission means is bypass-controlled by the bypass means to control the electric motor control means. Even if you do
When a current is flowing through the insulation transfer means and when the insulation transfer means is bypassed by the bypass means, that is, regardless of whether the motor is on or off, the constant current means can make the current value constant, so that the current variable means Since the varied current can be accurately read by the current means, the electric blower can be accurately controlled regardless of whether the electric motor is on or off.

According to the second aspect of the present invention, the electric motor control means is controlled by connecting the bypass transmission means in parallel to the insulation transmission means for controlling the electric motor control means and controlling the insulation transmission means by the bypass means. Even if you do
Since the constant current means is connected in series to the bypass means and the insulation transfer means corresponding to the blower opening / closing means, when the insulation transfer means is passing a current and when the bypass means bypasses the insulation transfer means, that is, Regardless of whether the electric motor is on or off, the constant current means can make the current value constant corresponding to the operation stage set by the blower opening / closing means, so that the current detecting means can read it accurately, so that the electric motor is turned on, You can accurately control the electric blower regardless of whether it is off.

[Brief description of drawings]

FIG. 1 is a block diagram showing a hand control unit according to an embodiment of the present invention, FIG. 2 is a circuit diagram showing a logic processing unit according to the first embodiment, and FIG.
Fig. 4 is a circuit diagram showing the main body of the vacuum cleaner, Fig. 4 is a block diagram showing a central processing unit of the same embodiment, Fig. 5 is a circuit diagram showing the main body of the vacuum cleaner, and Fig. 6 is a circuit showing a control unit of the same. FIG. 7, FIG. 7 is a perspective view showing the same vacuum cleaner main body, FIG. 8 is a front view showing the same hand control unit, FIG.
FIG. 10 is a block diagram showing the hand permission control means of another embodiment,
FIG. 11 is a circuit diagram of the same as above, FIG. 12 is a block diagram of an electric vacuum cleaner showing a conventional example, FIG. 13 is a block diagram showing the hand permission control means of the same, and FIG. 14 is a hand permission control means of another conventional example. It is a block diagram. 101 …… Vacuum cleaner body, 107 …… Electric blower, 121 ……
Hose, 125 …… Brush motor, 128 …… Suction port,
130: Hand control means, 162: Control means, 167: Hand power supply means, 171: Current detection means, 187: Electric power control means, 211: Blower opening / closing means, 216: Electric motor opening / closing means,
222 …… Blower signal load means, 246 …… Current variable means, 25
3 ... Drive motor signal load means, 272 ... Insulation transfer means, 273 ... Motor control means, 274 ... Bypass means, 27
5,471 …… Constant current means, 491 …… Constant current drop means.

Claims (2)

[Claims] 1. An electric vacuum cleaner main body having an electric blower and a control means having an electric power control means for controlling the output of the electric blower, and a commercial power source on the electric vacuum cleaner main body side, which is connected via the electric motor control means. A suction port body having an electric motor, and a hose portion which is connected to the control means via a two-wire transmission path and has a hand control means for controlling the output of the electric blower and the drive of the electric motor. Includes a power supply means for supplying power to the hand control means, a current detection means for detecting a current from the hand control means, and an output control means for controlling the power control means according to the output of the current detection means. The hand permission control means includes a blower opening / closing means for selecting an operation stage of the electric blower, a motor opening / closing means for selecting an operation stage of the electric motor, and the hand permission power supply. Current varying means for setting the electric power from the means to a current value corresponding to the output from the blower opening / closing means and outputting the current to the current detecting means; and driving the electric motor connected in parallel to the current varying means. Of the insulation transmission means for controlling the electric motor control means for controlling the insulation transmission means, a bypass means connected in parallel to the insulation transmission means for controlling the insulation transmission means by operating the electric motor opening / closing means, and the insulation transmission means and the bypass means. An electric vacuum cleaner comprising: a constant current unit that is connected in series to each of the units and is connected in parallel to the current variable unit to supply a constant current. 2. An electric vacuum cleaner main body having a control means having an electric blower and an electric power control means for controlling the output of the electric blower, and a commercial power source on the side of the electric vacuum cleaner body, which is connected via the electric motor control means. A suction port body having an electric motor, and a hose portion which is connected to the control means via a two-wire transmission line and has a hand control means for controlling the output of the electric blower and the drive of the electric motor. Includes a power supply means for supplying power to the hand control means, a current detection means for detecting a current from the hand control means, and an output control means for controlling the power control means according to the output of the current detection means. The hand permission control means has a blower opening / closing means for selecting an operation stage of the electric blower, a motor opening / closing means for selecting an operation stage of the electric motor, and the blower. A plurality of constant current means which are provided corresponding to the closing means and output constant currents having different current values to the current detecting means in accordance with selected operation stages; and the electric motor connected in series to these constant current means. An insulation transmission means for controlling the electric motor control means for controlling the drive of the motor, and a bypass means connected in parallel to the insulation transmission means for controlling the insulation transmission means by operating the electric motor opening / closing means. And a vacuum cleaner.