JP2601878B2 - Electric vacuum cleaner - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a vacuum cleaner in which the output of an electric blower is controlled by hand control means provided on a hose portion.

(Prior Art) Conventionally, an electric blower and a control means for controlling the output of the electric blower are provided in a cleaner body, and a hose portion detachably connected to the cleaner body is electrically connected to the controller. It is known that a vacuum cleaner that turns on or off an electric blower with a strong or weak output by operating a plurality of normally-open switches provided in the hand control means provided with a hand control means to be connected is known. I have. The control unit has a central processing unit such as a microcomputer, a constant voltage unit that supplies power to the central processing unit, a hand-held power unit that supplies power to the hand control unit, and the like.
There is a main body-side reset means for initializing the central processing unit while prohibiting the operation of the central processing unit for a certain period of time after the power is applied. Further, the hand control means has a blower opening / closing means constituted by a switch and the like, and a blower signal processing means for outputting a signal corresponding to the output from the blower opening / closing means to a control circuit of the cleaner main body, and the like. For example, a hand-held reset means which is constituted by an initialization capacitor connected in parallel with a switch for turning off, and which holds the selection operation of the blower opening / closing means at an off position for a predetermined time after applying power to the blower signal processing means, I have.

Conventionally, the reset time of the hand-side reset means is extremely short, since no specific value is set for the rise time of the power supply of the constant voltage means or the hand-held power supply means. On the other hand, the reset time of the body-side reset means is longer than the rise time of the power supply of the constant voltage means.

(Problems to be solved by the invention) However, in the conventional vacuum cleaner as described above,
Since the reset time of the hand-side reset means is very short, there is a problem that the operation of the hand-hand control means is affected by instability or the like when the power is turned on from the cleaner body side, and a malfunction occurs. In other words, there is a problem that the electric blower suddenly moves without being operated.

Note that such a malfunction occurs because the reset time of the hand-side reset means is shorter than the reset time of the main body-side reset means, and when the hose is connected to the cleaner body, the power plug of the cleaner body is disconnected. Occurs when the power supply is plugged into an AC power outlet. On the other hand, when the hose portion is connected to the cleaner body after the power plug is inserted into the outlet, that is, when the initialization by the body-side reset unit has already been completed, the above-described malfunction does not occur.

Here, the reason why this malfunction occurs will be described with reference to the graphs (a) and (b) in FIG.

FIG. 12 (a) shows the rise characteristics of the operation of the central processing unit. After the start of power supply, a reset time of, for example, about 70 ms, initialization is completed, and a program for controlling the electric blower is provided. Execution starts. On the other hand, as shown in FIG. 12 (b), the hand control means, as shown in FIG. 12 (b), is a hand-side reset means which starts rising from the start of power supply, that is, when the charging voltage of the initialization capacitor exceeds a certain reference Vc. , The reset is released and the device becomes operable. The reset time until the device becomes operable is about 30 ms. For this reason, after the reset of the hand-side reset means is released, until the central processing unit starts executing a normal program by 70 ms, the selection operation of the blower opening / closing means of the hand control means is not in the off position due to noise in the power supply or the like. When the position becomes the position, the value detected by the current detection means for detecting the current from the hand control means in the control means is held, and when the initialization of the central processing unit is completed, the electric blower is suddenly started. Inconvenience occurs.

The cause of the malfunction of the hand control means as described above is as follows.
These are discontinuous changes and noise at the rise of the power supply voltage. That is, while the selection operation of the hand control means is not completely performed, the storage means for storing the respective selection contents of the blower opening / closing means in the hand control means are all turned on due to the discontinuous change of the power supply voltage or noise. Or an unspecified channel is latched.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has as its object to provide a vacuum cleaner capable of preventing a malfunction at an initial stage of power application. Another object of the present invention is to provide an easy-to-use vacuum cleaner that is not unnecessarily held in the opposition.

(Means for Solving the Problems) The electric vacuum cleaner according to claim 1, wherein the electric vacuum cleaner has a main body including an electric blower and a control means for controlling an output of the electric blower, and an electric blower connected to the control means. A hose section having hand control means for controlling the output,
The control means controls hand power supply means for supplying power to the hand control means, current detection means for detecting the current of the hand control means, and power control means for driving the electric blower according to the output of the current detection means. Output control means,
Main body-side reset means for giving a reset signal to the control means for prohibiting the operation of the control means for a certain period of time after the power is applied to the control means, wherein the hand control means selects the operation position of the electric blower. Means, a blower signal processing means for generating a signal output corresponding to the blower opening / closing output from the blower opening / closing means, and a selection operation of the blower opening / closing means being held at an off position for a predetermined time after power is applied to the blower signal processing means And a resetting means for supplying a reset signal to be supplied to the blower signal processing means, wherein a reset time of the resetting means is set longer than a resetting time of the main body resetting means.

According to a second aspect of the present invention, in the vacuum cleaner of the first aspect, the hand-side reset means includes a reset time variable means for changing a reset time of the hand-side reset means.

(Operation) In the electric vacuum cleaner according to the first aspect, the operation position of the electric blower is selected by the blower opening / closing means in the hand control means of the hose portion to which power is supplied from the hand power supply means on the cleaner body side, and the blower signal is supplied. The processing means generates a signal output corresponding to the blower open / close output from the blower open / close means. Then, this signal output is output to the control means of the cleaner body, the current detection means detects the current from the hand control means,
The output control means controls the power control means for driving the electric blower in accordance with the output of the current detection means, and controls the output of the electric blower. At this time, the main body-side reset means prohibits the operation of this control means for a certain period of time after the power supply to the control means is applied, and the hand-side reset means keeps the selection operation of the blower opening / closing means constant after the power supply to the blower signal processing means. Although the hold in the off position is released after the prohibition of the operation of the control means is released, this control is performed when the control means of the cleaner body does not operate. No signal output corresponding to the ON position from the hand control means is input to the means.

In the vacuum cleaner according to the second aspect, in the vacuum cleaner according to the first aspect, when the power supply to the control unit is started, the hand control unit may hold the main unit reset unit in the off position for a time equal to or longer than the reset time. When the prohibition of the operation of the control means by the main body side reset means has already been released, the reset time is changed by the reset time variable means, and the reset time is turned off for a shorter time than the reset time of the main body side reset means. The position is held.

(Embodiment) Hereinafter, an embodiment of the vacuum cleaner of the present invention will be described with reference to FIG. 1 to FIG.

In FIG. 7, reference numeral 101 denotes a vacuum cleaner main body. The vacuum cleaner main body 101 has a front handle 102 at a front portion, and a cover body 103 is pivotally mounted on a rear upper portion so as to be freely opened and closed. A component storage section 104 is provided inside the cover body 103, and a vine port 105 and a round brush 106 are stored therein. 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. Behind the indicator 110, display light emitting diodes 111, 112, 113, and 114 are provided to constitute a level meter 115. Further, the vacuum cleaner main body 101 is provided with a bumper 116 located on the peripheral surface.

A pair of wheels 117 and a turning wheel are provided at the lower part of the vacuum cleaner main body 101 at the rear side of both side surfaces and at the front side of the lower surface, respectively, and a handle 118 is turned at the upper part. It is provided so that it can be stored freely. Meanwhile, 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 removably attached to the upper surface of the vacuum cleaner main body 101. Hose body 1 connected to this body connection part 122
A grip tube 125 is provided at the distal end of the extension tube 23 to which an extendable extension tube 124 is inserted and detachably inserted and connected. The grip tube 125 is provided with a hand operation unit 126. Further, a connection pipe 129 of a suction port body 128 having a built-in AC brush motor 127 as an electric motor is detachably attached to the extension pipe 124. Further, the suction port body 128 can be selectively exchanged with the vine port 105 or the round brush 106.

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 unit 126 includes a connection tube 133 connected between the cover tube 132 connected to the hose body 123 and the grip tube 125.
The display tube 134 is attached to the connection pipe 133. Then, in the vicinity of the display of, for example, “strong” on the display panel 134, a strong switch for operating a normally open contact (for example, a trade name tact switch) 141 of one circuit and one contact as an operation switch for changing the output of the electric blower 107. Operation button 142 and a display 143 having, for example, a light emitting diode for displaying the operation position of the operation button 142 are provided. Similarly, the operation button 145 and indicator 146 of the normally open contact 144 for automatic operation are displayed near the display of “Auto”, and the operation button 148 and display of the normally open contact 147 for the sofa near the display of “Weak”. 149, near the display of "OFF", operation buttons 151 of the normally open contact 150 for disconnection are provided. Note that a display corresponding to the operation button 151 for cutting is not provided.
Also, 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 127, are provided near the operation button 142 for strong use and the display 143 for strong use. Is provided. Further, normally open contacts 154 and 155 are provided on the operation button 152 for turning on the motor and the operation button 153 for turning off the motor, respectively, and a light emitting diode 156 for motor as motor display means is provided near the operation button 152 for turning on the motor. Is provided.

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

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

This control means 162 is connected to a commercial AC power supply 161 by a step-down transformer.
A primary winding 164 of the transformer 163 is connected to a secondary winding 165 of the transformer 163. Rectifying means 166 for rectifying an alternating current into a pulsating flow is connected to the rectifying means 166. The power supply means 167 and the constant voltage means 168 for converting the voltage to the power are connected. For example, the hand power supply means 167 is connected to a 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.
73 is a detection means provided with air path detection means 174 for detecting the pressure or flow rate in the air path of the vacuum cleaner main body 101 and conversion means 175 for converting the detection value of the air path detection means 174 into an electrical output. Connected to 176. And this detection means 1
76 is connected to the central processing unit 172 via amplifying means 177 for amplifying the output of the detecting means 176. Further, the constant voltage means 168 is connected to the central processing unit 172 as it is in order to drive the central processing unit 172, and the first reset unit 178 which outputs a reset release signal to the central processing unit 172 when the power is turned on again. It is connected to the central processing unit 172 via the CPU.

Further, the secondary winding 165 of the transformer 163 has a commercial AC power supply 16.
Zero cross detection means 179 for detecting zero volt of 1 and discriminating the frequency of 50 Hz and 60 Hz is connected. The zero cross detection means 179 is connected to the central processing unit 172. 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 control means 180.
Is connected to the central processing unit 172. 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 172 is connected to an output control means 186 provided with a driving means 184 and an insulating means 185, and the output control means 186 is connected to a power control means 187 connected between the commercial AC power supply 161 and the electric blower 107. It is connected to the.

Next, the configuration of the central processing unit 172 of the above embodiment will be described with reference to the circuit diagram of FIG.

The zero-cross detection means 179 is provided via the zero-cross input means 191, the first reset unit 178 is provided via the reset input means 192, and the current detection means 171 and the amplification means 177 receive inputs from the current detection means 171 and the amplification means 177. A / D conversion means 19 connected to input switching means 193 which alternates and digitizes
4 is connected to a data transfer means 195 for reading and reading each data. The display means 181 is connected to a display opening / closing means 196 for turning on and off the display. Furthermore, data transfer means 1
A storage means 199 including a data storage means 197 and a temporary storage means 198 is connected to 95, and this storage means 199 stores a suction force set for the output of the current detection means 171 and the output of the conversion means 175. The data to be converted and stored in the corresponding output is stored. The data transfer means 195 is connected to an arithmetic processing means 200 for calculating the output from the input switching means 193 and the storage means 199 to the set suction capacity. The data transfer means 195 is connected to the display opening / closing means 196 and connected to the display output means 201 and the sound drive means 182 for operating the display open / close means 196, and the sound output means 202 for operating the sound drive means 182. And output means 203 for operating the drive means 184 is connected to the drive means 184 of the output control means 186. Further, the data transfer means 195 is connected to a second reset unit 204 which, upon receiving a reset release signal from the first reset unit 178, returns the progress of the program to the initial state and inhibits the progress of the program for a certain time. And these first
The reset section 178 and the second reset section 204 constitute the main body reset means 205 as shown in FIG.

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 position of the electric blower 107. And the blower opening and closing means 211,
Cutting blower opening / closing means 212 for cut selection, automatic blower opening / closing means 213 for automatic selection, weak blower opening / closing means 2 for weak selection
14 and a 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 position of the brush motor 127. Then, the motor opening / closing means 216
Is constituted by cutting motor opening / closing means 217 for cutting the brush motor 127 and driving motor opening / closing means 218 for selecting the driving of the brush motor 127. The blower opening / closing means 211 and the motor opening / closing means 216 are logic processing means.
The logic processing means 219 processes mutual interlocking and non-interlocking operations according to the operation position set by the blower opening / closing means 211 and the operation position set by the motor opening / closing means 216 by the set logic. . Further, as shown in FIG. 2, the logic processing means 219 is connected to the cutting blower opening / closing means 212 from the cutting motor opening / closing means 217.
The diode 220 is connected to the drive motor opening / closing means 218 from the automatic blower opening / closing means 213.
221 is connected.

Also, the logic processing means 219
A 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 is connected, and the blower signal load means 222 is a cutting blower signal for setting the turning off of the electric blower 107. Loading means 223,
Automatic blower signal load means 224 for setting automatic operation of electric blower 107, weak blower signal load means 225 for setting weak operation of electric blower 107, and strong blower signal load means 226 for setting strong operation of electric blower 107 It is composed of

Further, the blower signal load means 222 includes blower amplifying 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
A blower amplifying means 228 for amplifying the output of 23, and an automatic blower amplifying means 2 connected to the automatic blower signal load means 224 and amplifying the output of the automatic blower signal load means 224.
This weak blower signal load connected to the weak blower signal load means 225 connected to the weak blower signal load means 225 and amplifying the output of the weak blower signal load means 225, and the strong blower signal load means 226 And a strong blower amplifying means 231 for amplifying the output of the means 226. This blower amplifying means 227 has a blower storage means 2 for storing the output of the blower signal load means 222 via a blower mutual reset means 232.
Connected to 33. Also, this blower storage means 233
The cutting fan storage means 234 for storing the output of the cutting fan signal load means 223, the automatic blower storage means 235 for storing the output of the automatic blower signal load means 224, and the weak blower signal load means 225 It comprises a weak blower storage means 236 for storing the output, and a strong blower storage means 237 for storing the output of the strong blower signal load means 226. Then, when any one of the signals from the blower signal load means 222 is re-input to any of the blower storage means 233, the mutual reset is performed by the blower mutual reset means 232.

Further, a blower output buffer means 238 having one end grounded is connected to the blower storage means 233, and the blower output buffer means 238 is connected to the automatic blower output buffer means 239 connected to the automatic blower storage means 235. Air blower output buffer means 240 connected to air blower storage means 236
And the 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, the output buffer unit corresponding to the cutting fan storage unit 234 may not be provided as shown in the embodiment.

Further, to the blower output buffer means 238, a current variable means 246 for outputting a current corresponding to the output of the blower storage means 233 to the current detecting means 171 of the vacuum cleaner main body 101 is connected. The current varying means 246 includes an automatic current varying means 247 that outputs an automatic current corresponding to the output of the automatic blower storage means 235, and a weak current corresponding to the output of the weak blower storage means 236. Output current varying means
248, and a strong current variable means 249 that outputs a strong current corresponding to the output of the strong blower storage means 237,
These current varying means 246 are connected to terminal A.

Also, the logic processing means 219
The motor signal loading means 251 for generating a signal output corresponding to the motor opening / closing output from the motor opening / closing means 216 which has been subjected to the logic processing is connected. The motor signal loading means 251 includes a cutting motor signal loading means 252 for setting the cutting of the brush motor 127 and a driving motor signal loading means 253 for setting the driving of the brush motor 127.

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. The motor amplifying means 254
The cutting motor signal loading means 252 is connected to the cutting motor signal loading means 252 and amplifies the output of the cutting motor signal loading means 252, and the driving motor signal loading means 253 is connected to the driving motor signal loading means 253. And 253 a drive motor amplifying means 256 for amplifying the output. The motor amplifying means 254 includes a motor mutual resetting means 257.
Is connected to the electric motor storage means 258 via the. The motor storage unit 258 includes a cutting motor storage unit 259 that stores the output of the cutting motor signal loading unit 252, and a driving motor storage unit 2 that stores the output of the driving motor signal loading unit 253.
It consists of 60. Then, the motor storage means 258
When any of the signals from the motor signal loading means 251 is re-input to any of the above, the mutual reset is performed by the motor mutual reset means 257.

On the other hand, the cutting motor storage means 259 of the motor storage means 258 has a cutting motor output buffer means 261 having one end grounded.
Is connected. Note that the motor output buffer means is not connected to the drive motor storage means 260.

Further, the blower display means 242 is connected in series with a motor display means 271 for displaying the drive of the brush motor 127 and an insulation transmission means 272 for controlling the brush motor 127, and is connected to the terminal A. And this insulation transmission means 272
Is connected to a brush motor control means 273 for controlling the electric power of the brush motor 127 in accordance with the output of the insulation transmission means 272. The brush motor control means 273 controls the vacuum cleaner main body 101 via a terminal D. The brush motor 127 is connected to one end of a brush motor 127 via a terminal F, and the other end of the brush motor 127 is connected to a control means 162 of the vacuum cleaner main body 101 via a terminal E and a terminal C. Have been.

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 side of the power supply means 167 of the insulation transmitting means 272 and the bypass means 274.

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.

In FIG. 1, the portion surrounded by the two-dot chain line is the blower signal processing means 277.

Further, the logic processing means 219 includes a hand-side reset means 278 which provides the blower signal processing means 277 with a reset signal for holding the selection operation of the blower opening / closing means 211 at the off position for a certain period of time after power is applied to the blower signal processing means 277.
Is connected. And this hand-side reset means 27
The reset time of 8 is set to be longer than the reset time of the main body reset means 205, that is, set to be equal to or longer than the reset time of the main body reset means 205.

Next, a specific circuit configuration of the above embodiment will be described with reference to FIG. 5 and FIG.

Control means is connected to the commercial AC power supply 161 through a fuse 281.
The triac 282 and the electric blower 107, which are bidirectional control elements of the power control means 187 of 162, are connected in series.
The triac 282 includes a snubber circuit 285 for protecting the triac 282 having a resistor 283 and a capacitor 284.
Is connected. Further, terminals C and D are provided at both ends of the commercial AC power supply 161. In the electric blower 107, capacitors 286, 287, and 288 are connected to both ends of the commercial AC power supply 161 via the electric blower 107 and the fuse 281 by Δ (delta).
The connected noise prevention circuit 289 for noise prevention is connected.

On the other hand, the primary winding 164 of the transformer 163 is connected to the commercial AC power supply 161 via the fuse 281. The primary winding 164 is connected to a protection fuse 291 and a varistor 292 connected in series in parallel. The secondary winding 165 of the transformer 163 has a diode bridge 299 having diodes 295, 296, 297 and 298 as rectifiers 166.
Is connected. And this diode bridge 29
The three-terminal regulator 301 for a constant voltage of, for example, 12 V of the hand-held power supply means 167 is connected to the DC output side 9. In addition, 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.
Further, an electrolytic capacitor 304 and a capacitor 305 are connected between the other end of the three-terminal regulator 301 and the negative electrode of the diode bridge 299, respectively. A three-terminal regulator 306 for a constant voltage of, for example, 5 V of the constant voltage means 168 is connected to the DC output side of the diode bridge 299. A capacitor 307 is connected between one end of the three-terminal regulator 306 and a negative electrode of the diode bridge 299. Further, 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. Furthermore, on the positive output side of the diode bridge 299,
The collector of an NPN transistor 312 having a bias resistor 311 between the emitter and base is connected. The base of the transistor 312 is an NPN transistor having a bias resistor 313 between the emitter and the base.
The emitter of the transistor 314 is connected to the negative side of the diode bridge 299. Also,
The base of the transistor 312 and the collector of the transistor 314 are connected to the three-terminal regulator 301 via the resistor 315, and the base of the transistor 314 is connected to the central processing unit 17 via the resistor 316.
Connected to two. Further, a smoothing electrolytic capacitor 317 and a capacitor 318 are connected in parallel between the emitter of the transistor 312 and the emitter of the transistor 314. On the other hand, the negative electrode of the diode bridge 299 is connected to the varistor 321 and the capacitor 322 connected in parallel with the protection means 170.
Is connected to a terminal A via a varistor 323 and a capacitor 324 connected in parallel. The terminal B and the diode bridge 29
A resistor 171 as a current detecting means is connected between the negative electrode 9 and the negative electrode 9, and a resistor 325 is connected between the terminal B and the central processing unit 172.

In addition, three-terminal regulator 306 and diode bridge 2
An electrolytic capacitor 331 for smoothing is connected between the capacitor and the capacitor 99. Further, the three-terminal regulator 306 is connected to an inverting input terminal of an operational amplifier 173 as a constant current means, and a 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.
Is connected. The detecting means 176 is formed by diffusing a semiconductor such as silicon.
A resistance bridge having 333, 334, 335, 336 is configured. Among these, a variable resistor 337 as an offset gain for adjusting gain is connected between the resistor 333 and the resistor 334. The slider of the variable resistor 337 is connected to the non-inverting input terminal of the operational amplifier 339 of the amplifying means 177 via the resistor 338, and the connection point between the resistor 335 and the resistor 336 is connected to the resistor 340.
And an inverting input terminal of the operational amplifier 339, and a resistor 341 is connected between the inverting input terminal and the output terminal. A non-inverting input terminal of the operational amplifier 339 has a resistor 343 connected from an inverting input terminal of the operational amplifier 173 to an output terminal of an operational amplifier 342 forming a voltage follower circuit.
Is connected. 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 output terminal of the operational amplifier 342 via the resistor 346. Further, 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 a diode is connected via the resistor 349. It is connected to the negative electrode of bridge 299.

On the other hand, from the three-terminal regulator 306 to the first reset unit 1
It is connected to the negative electrode of a diode bridge 299 via a resistor 351, a zener diode 352 and a resistor 353.
NP is connected to the connection point between the anode of the Zener diode 352 and the resistor 353.
The base of an N-type transistor 354 is connected. The collector of the transistor 354 is connected to the three-terminal regulator 301 of the power supply means 167 via the resistor 355, the emitter of the transistor 354 is connected to the base of the NPN transistor 356, and the collector of the transistor 356 is connected to the central processing unit 172 and The positive terminal of the diode bridge 299 is connected to the positive terminal of the diode bridge 299 via the resistor 357, and the emitter of the transistor 356 is connected to the negative terminal of the diode bridge 299. Also,
Light-emitting diodes 362 and 363 connected in anti-parallel to the zero-crossing detecting means 179 are connected to both ends of the secondary winding 165 of the transformer 163 via a resistor 361, and these light-emitting diodes 362 and 363
Is photocoupled with a phototransistor 364. The collector of the phototransistor 364 is connected to the three-terminal regulator 306 of the constant voltage means 168, and the emitter of the phototransistor 364 is connected to the negative terminal of the diode bridge 299 via the central processing unit 172 and the resistor 365. One end of a resistor 180 serving as current limiting means is connected to the three-terminal regulator 301, and the other end is connected to the anodes of the light emitting diodes 111, 112, 113, and 114 connected in parallel to the display means 181.
The cathode of 4 is connected to the central processing unit 172. Further, one end of the resistor 371 of the sound drive unit 182 is connected to the central processing unit 17.
2 and the other end is bias resistor 3 between emitter and base.
The emitter of this transistor 373 is connected to the negative terminal of a diode bridge 299, and the collector of this transistor 373 is connected in parallel with a resistor 3
It is connected to the buzzer 376 of the sounding means 183 having 75 and to the three-terminal regulator 301 of the power supply means 167.
Capacitors 381 and 382 are connected in parallel between the central processing unit 172 and the negative electrode of the diode bridge 299, and a resistor is provided between the connection point between the central processing unit 172 and the capacitor 381 and the connection point between the central processing unit 172 and the capacitor 382. 383 and a clock oscillator 384 of the central processing unit 172 are connected in parallel. Further, a bias resistor 392 is connected between the emitter and base from the central processing unit 172 via the resistor 391 of the output control means 186.
The emitter of the transistor 393 is connected to the negative electrode of the diode bridge 299, and the collector of the transistor 393 is connected to the light-emitting diode 394 of the insulating means 185 and the power supply means 167 via the resistor 395.
Connected to terminal regulator 301. Further, the light emitting diode 394 is electrically insulated and connected to the photo triac 396 by photo coupling, and the photo triac 396 is connected to the connection point of the triac 282 and the electric blower 107 via the gate of the triac 282 and the resistor 397. ing.

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

Zener diode 400 connected in parallel between terminals A and B
And protection means 276 having electrolytic capacitors 401 and 402 are connected.

A terminal A has a cutting blower signal load means 223 having a load resistor 404 having a noise prevention capacitor 403 in parallel.
And a load resistor 406 having a noise prevention capacitor 405 in parallel.
Automatic blower signal load means 224 having a load resistance 408 having a noise resistance capacitor 407 in parallel with the weak blower signal load means 225, and a noise prevention capacitor 409 in parallel
Heavy-duty blower signal loading means 2 with load resistance 410 having
26 and one end are connected respectively. And, between the other end of the load resistor 404 of the cutting blower signal load means 223 and the terminal B, a cutting blower opening / closing means 212 having a normally open contact 150 having a parallel resistance 411 for preventing malfunction in parallel is provided. It is connected. Further, between the other end of the load resistance 406 of the automatic blower signal load means 224 and the terminal B, an automatic blower opening / closing means 213 having a normally open contact 144 having a parallel resistance 412 for preventing malfunction in parallel is provided. It is connected. Further, between the other end of the load resistor 408 of the weak blower signal load means 225 and the terminal B, a weak blower opening / closing means 214 having a normally open contact 147 having a parallel resistance 413 for preventing malfunction in parallel is provided. It is connected. In addition, between the other end of the load resistor 410 of the heavy blower signal load means 226 and the terminal B, a strong blower opening / closing means 215 having a normally open contact 141 having a parallel resistance 414 for preventing malfunction in parallel is provided. It is connected.

Note that an initialization capacitor 278 as a hand-side reset unit is connected in parallel with the parallel resistor 411 and the normally open contact 150 of the cutting blower opening / closing unit 212. The capacitance of the capacitor 278 is determined by the reset time determined by the charging time of the capacitor 278.
It is set to be longer than the reset time of 205.
However, it is necessary to consider the selection of an appropriate value that does not affect the internal circuit in terms of capacity, the advantage in terms of space, and the decrease in capacity due to temperature.

A terminal 42 is connected in parallel with a capacitor 42 for preventing noise.
Cutting motor signal loading means with load resistor 422 having 1
252 and one end of a drive motor signal load means 253 having a load resistor 424 having a capacitor 423 for preventing noise in parallel. Further, the cutting motor signal loading means 252
A normally open contact 155 having a bypass resistor 425 for preventing malfunction is connected in parallel between the other end and the terminal B. A normally open contact 154 having a bypass resistor 426 for preventing malfunction is connected in parallel between the other end of the driving motor signal load means 253 and the terminal B.
Further, a load resistor 428 having a capacitor 427 for preventing noise and a resistor for preventing malfunction are connected in parallel from the terminal A to the terminal B.
429 are connected in series.

On the other hand, 431 and 432 are integrated circuits (ICs).
Means blower amplification means 227, blower mutual reset means 232,
It has functions as a blower storage unit 233, a blower output buffer unit 238, a motor amplification unit 254, a motor mutual reset unit 257, a motor storage unit 258, and a cutting motor output buffer unit 261. The terminal of IC431, the terminal, the terminal and the terminal of IC432 are connected to the terminal A and the capacitor for initialization.
It is connected to terminal B via 433. Furthermore, the terminal of IC431 and the terminal of IC432, the terminal and the terminal
It is connected to the. In addition, the cutting blower signal load means 223
Load resistance 404 and the normally open contact 150 of the blower opening / closing means 212
Is connected to the terminal of IC431. further,
A connection point between the load resistance 406 of the automatic blower signal load means 224 and the normally open contact 144 of the automatic blower opening / closing means 213 is connected to a terminal of the IC 431. In addition, the weak blower signal loading means 22
5 load resistance 408 and normally open contact 147 of weak blower opening / closing means 214
Is connected to the terminal of IC431. And
A connection point between the load resistance 410 of the heavy blower signal load means 226 and the normally open contact 141 of the strong blower opening / closing means 215 is connected to a terminal of the IC 431. The connection point between the load resistance 422 of the cutting motor signal loading means 252 and the normally open contact 155 of the cutting motor opening / closing means 217 is connected to the terminal of the IC 432, and is connected to the load resistance 424 of the driving motor signal loading means 253. Motor opening and closing means 218
The connection point with the normally open contact 154 is connected to the terminal of the IC 432. Also, the terminal of IC431 is connected to the terminal of IC432,
The terminal of 431 is connected to the terminal of IC432, the terminal of IC431 is connected to the terminal of IC432 via a diode 435, and the IC
The terminal of 431 and the terminal of IC432 are connected via a diode 436.

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 A diode 220 is connected between the connection point of the resistor 422. The normally open contact 144 of the automatic blower opening / closing means 213 and the automatic blower signal loading means
Connection point of load resistance 406 of 224 and drive motor opening / closing means 218
A diode 221 is connected between the normally open contact 154 and the connection point of the load resistor 424 of the driving blower signal load means 253. The diode 220 and the diode 221 constitute a logic processing unit 219.

On the other hand, an automatic display means 243 having a light emitting diode 146 having a compensation resistor 441 in series is connected to the terminal of the IC 431, and a weak display means 244 having a light emitting diode 149 having a compensation resistor 442 in series at the terminal. Is connected to the terminal, and an overuse display means 245 provided with a light emitting diode 143 having a compensation resistor 443 in series. These light emitting diodes 143, 146, 149 are connected to the light emitting diode 271 as the motor display means and the light emitting diode 444 of the insulation transmitting means 272. In addition, a phototriac 445 is photocoupled to the light emitting diode 444 of the insulating transmission means 272. This photo triac 445
Is connected via a resistor 446 to one end and a gate of a triac 273 as brush motor control means.
The triac 273 is connected to the main body 101 of the vacuum cleaner via the terminal D and connected to one end of the brush motor 127 via the terminal F. The other end of the brush motor 127 is connected via the terminals E and C. Connected to the vacuum cleaner main body 101.

A resistor 249 is connected to a terminal of the IC 432 as a current varying means for strong use, a resistor 248 is connected to a terminal of the IC 432 as a current varying means for weak use, and these resistors 249 and 248 are connected to a terminal A. In this embodiment, the automatic current variable means 247 is not specially provided, and the light emitting diode 146 and the compensation resistor 441 of the automatic blower display means 243 are used as the automatic current variable means 247.

Further, the terminal of the IC 432 has a bias resistor 452 between the base and the emitter of the bypass means 274 and a PNP transistor 453 having an emitter and a collector connected to both ends of the light emitting diodes 271 and 444 via a resistor 451. I have.

The anode of the light emitting diode 444 and the emitter of the transistor 453 are connected to two so-called constant current diodes (for example, Model E-45 manufactured by Ishizuka Electronics Co., Ltd.) connected in parallel.
2) a constant current means 275 having 461 and 462;
75 is connected to a transistor driving resistor 463 connected in parallel.

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

When power is applied, that is, when the plug of the power supply cord 119 is inserted into the outlet of the commercial AC power supply 161, the voltage of the commercial AC power supply 161 is reduced by the transformer 163,
After the rectification, the voltage is made constant by the constant voltage means 168. After the start of power supply, the power supply voltage output by the constant voltage means 168 for the central processing unit 172 rises after a certain period of time.
When the voltage exceeds the set voltage set by the Zener diode 352, the Zener diode 352 and the transistors 354, 3
56 conducts, and a current flows to the reset input means 192 of the central processing unit 172 as a reset release signal. Conversely, the absence of this current becomes a reset signal. As described above, when the reset release signal is output, the initialization is performed by the second reset unit 204 in the central processing unit 172. That is, a program for controlling the electric blower 107 and the like is set to an initial state, and as shown in (c) of FIG. 12, the execution of this program starts about 70 ms after the start of power supply. That is, a fixed time from the start of power supply to the control means 162 to the start of execution of the program,
For example, for 70 ms (reset time of the main body side reset means 205), the operation of the control means 162 for controlling the electric blower 107 and the like is prohibited. Note that the second reset unit 204 is actually an initialization program written in the read-only memory.

At the same time, after the voltage of the commercial AC power supply 161 is stepped down by the transformer 163 and rectified by the rectifier 166,
Is set to a constant voltage. After the start of power supply, hand-held power supply means 167
The power supply voltage output from the power supply rises to a predetermined reference voltage, for example, 15 V after a certain time, for example, 100 ms.
Then, if the hose unit 121 is connected to the cleaner main body 101, the output voltage of the hand power unit 167 is applied to the hand control unit 130 of the hose unit 121. After the plug of the power cord 119 is inserted into the outlet, that is, after the output of the hand-held power supply means 167 reaches 15 V and becomes stable,
When the hose portion 121 is connected to the vacuum cleaner, the voltage applied to the hand control means 130 rises rapidly, but when the plug is inserted into the outlet while the hose portion 121 is connected to the cleaner body 101, or when the plug is When a switch such as a breaker connected to the plugged-in outlet is turned on, the voltage applied to the hand control means 130 rises substantially in response to the rise of the power of the hand power supply means 167.

Thus, when the voltage applied to the hand control means 130 rises, as shown in FIG. 12 (d), the charging voltage of the capacitor 278 as the hand-side reset means gradually increases. Until the charging voltage exceeds a predetermined reference value Vc, it is the same as closing the normally open contact 150 in parallel with the capacitor 278.
The selection operation of 1 is held in the off position. This holding or resetting to the off position continues until the output voltage of the hand-held power supply means 167 reaches 15 V and the rise of the power supply ends. That is, after the start of the power supply and after a reset time of, for example, 120 ms, the selection operation of the blower starting means 211 becomes possible. Since the reset time is equal to or longer than the reset time of the main body-side reset means 205, the blower opening / closing means 211 is started only after the execution of the control program such as the electric blower 107 of the central processing unit 172.
Can be selected, and an input signal corresponding to the ON position is input from the blower signal processing means 277 of the hand control means 130 to the control means 162.

Therefore, when the control unit 162 of the cleaner main body 101 does not operate, the signal output corresponding to the ON position from the blower signal processing unit 277 of the hand control unit 130 is output to the control unit 162.
Is not input to the
After the power supply voltage supplied from the 1 side to the hose section 121 side reaches the steady stable area, the operation of the blower opening / closing means 211 becomes possible for the first time, so that the operation of the hand control means 130 is unstable. The signal output corresponding to the ON position is not input from the hand control unit 130 to the control unit 162, and the signal output is always performed in a stable state, thereby preventing malfunction.

Further, for example, when the plug of the power cord 119 is unplugged from the outlet and immediately inserted again, the rise of the power supply such as the constant voltage means 168 becomes faster than when the plug is inserted after a sufficient time has passed. As described above, the rise time during which the power supply reaches the normal range differs between the initial rise of the power supply and when the power is turned on again.
Although the reset time of 5 is also different, in any case, after the initialization of the central processing unit 172 is completed, the holding of the blower opening / closing means 211 at the position is released. However, when the power is turned on again, the charging voltage of the capacitor 278 becomes equal to the reference value Vc.
In other words, the reset time of the main body-side reset unit 205 at the time of the initial rise of the power supply may be shorter.
Therefore, the stop time of the selection operation of the blower opening / closing means 211 is not unnecessarily long, and the usability is good.

Next, control of the electric blower 107 and the like during cleaning will be described.

When the phase angle of the commercial AC power supply 161 is 0 ° or 180 °, zero-cross detection means 179 detects zero voltage, and the output of the current detection means 171 is output to the A / D conversion means 194 via the input switching means 193. The output current values are averaged and stored in the temporary storage unit 198. When it is determined that this current value is set to “strong”, the trigger time of the triac 282 is set to a value corresponding to the output of “strong”, and when it is determined that the current value is set to “weak”, the trigger time of the triac 282 is set. The trigger time is set to a value corresponding to the output of “weak”. Also,
If it is determined to be set to "Off", the triac
Do not trigger 282.

When it is determined that the setting is automatic, the average value of the output voltage from the air flow path detecting means 174 is set, and this average value is compared with the data in the data storage means 197 and calculated by the arithmetic processing means 200. 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, for example, when the output of the electric blower 107 is set to "strong", the strong operation button 142
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 light emitting diode 143 of the manual operation unit 126 is turned on by the output converted to a constant current by the constant current means 275, and the level meter 115 of the vacuum cleaner main body 101 turns on all the light emitting diodes 111, 112, 113, 114, for example, and turns on "
Is shown.

Also, when the weak operation button 148 is pressed, the electric blower 107 outputs a weak output by the same operation, and the hand operation unit 126
The weak light emitting diode 149 is turned on, and only one light emitting diode 111 indicating that the level meter 115 of the vacuum cleaner main body 101 is "weak" is turned on. Note that, in this embodiment, the automatic current varying means 247 is not particularly provided,
The current set by the constant current unit 275 is detected by the current detection unit 171 and set automatically.

On the other hand, when the output of the electric blower 107 is set to be automatic, when the automatic operation button 145 is pressed to be automatic, the automatic light emitting diode 146 of the hand operation unit 126 is turned on, and the vacuum cleaner main body 101 is turned on. Light emitting diodes 111, 112, 1
13,114 blinks according to the output of the electric blower 107.

When the brush motor 127 is turned on, when the operation button 152 of the drive motor opening / closing means 218 is closed, the drive motor signal load means 253 is activated, and the automatic blower signal load is controlled by the diode 221 of the logic processing means 219. Activate the means 224. When the drive motor signal load means 253 operates, the drive motor amplification means 256
Then, the fact that the brush motor 127 is to be driven is stored in the drive motor storage means 260 by the motor mutual reset means 257, and the storage contents of the cutting motor storage means 259 are reset, and the base of the transistor 453 of the bypass means 274 is reset. The light emitting diode 271 indicating that the brush motor 127 is driving the current which is stopped by stopping the current and bypassing the bypass means 274, and the light emitting diode 44 of the insulation transmitting means 272.
Pour into 4. The current flowing through the light emitting diode 271 and the insulation transmitting means 272 or the bypass means 274 is converted to a constant current by the constant current means 275, and always takes a constant current value. Then, the photocoupled phototriac 445 is turned on, the triac 273 is turned on, and the brush motor 127 is driven. 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 127 is turned off, when the operation button 153 of the cutting motor opening / closing means 217 is closed, the cutting motor signal loading means 252 is operated. When the cutting motor signal loading means 252 operates, the cutting motor amplification means 2
Amplify at 55, and store the fact that the brush motor 127 is turned off in the cutting motor storage means 259 by the motor mutual reset means 257, and reset the storage contents of the drive motor storage means 260, and use the output buffer means 261 for the motor. The current flowing through the light emitting diode 271 and the light emitting diode 444 of the insulating transmission means 272 indicating that the brush motor 127 is being driven is given to the bypass means 274 by outputting a base current to the transistor 453 of the bypass means 274 to indicate that the brush motor 127 is being driven. . Then, the light emitting diode 444 of the insulating transmission means 272 is turned off, and the triac 273 is turned off without triggering the phototriac 445 to turn off the brush motor 127, and the light emitting diode 444 is turned off to stop the brush motor 127. Indicates that

Next, when the cutting operation button 151 is pressed, the cutting blower opening / closing means 212 is operated, the cutting blower signal loading means 223 is operated, and the cutting motor signal loading is performed by the diode 220 of the logic processing means 219. The means 252 is operated. As a result, the electric blower 107 stops and the brush electric motor 127 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 127 are turned off.

When clogging or the like occurs, the sound generation driving means 182
Drives the buzzer 376 of the sounding means 183.

As in the above embodiment, the reset time of the hand-side reset means is set to be equal to or longer than the reset time of the main body-side reset means 205 by simply setting the capacity of the initialization capacitor 278 and the like to an appropriate value. It is easy to set, but if a highly integrated circuit configuration such as monolithic IC or hybrid IC is possible, configure a timer with transistors and operational amplifiers to find a more demanding one. Is also possible.

Next, another embodiment of the present invention will be described with reference to FIG. 10 and FIG.

In the embodiment shown in FIGS. 10 and 11, the hand-side reset means 501 of the hand control means 130 is
A reset control unit 502 for holding the first selection operation in the off position for a certain period of time and a reset time varying unit 503 for switching the reset time of the reset control unit 502 are provided. And this reset time variable means 503
When the power of the constant voltage means 168 rises, the reset time is set to be equal to or longer than the reset time of the main body reset means 205, and when the reset time has already elapsed in the main body reset means 205, the reset time is set to the reset time at the time of power rise. It is shorter than that.

Then, the reset control means 502 controls the normally open contact 150 for disconnection.
And two capacitors 504 and 505 of different containers selectively connected between the intermediate point of the resistor 404 and the terminal B. The reset time varying means 503 is connected to the power terminal A
Voltage comparison means 506 and timer means 507 connected to
A logic processing unit 508 connected to the voltage comparison unit 506 and the timer unit 507 and a switching unit 509 connected to the logic processing unit 508 and switching the connection between the capacitors 504 and 505 are provided.

Further, the voltage comparing means 506 compares the output voltage of the manual power supply means 167 applied to the manual control means 130 with a fixed reference value V _0, and outputs the comparison result to the logic processing means 508. The timer means 507 outputs a signal to the logic processing unit 508 when the elapsed predetermined time t ₀ after the power application start to the hand control unit 130. Note that t ₀ is the main body side reset means 205
Is sufficiently shorter than the reset time. Further, the logic processing unit 508, when a signal input from the timer means 507, and controls the switching means 509 based on input from the voltage comparison means 506, if the voltage greater than or equal _to V ₀ normally open contacts 150 and a resistor 404 Connect capacitor 504 to the midpoint of
If it is smaller than V _{0, the} capacitor 505 is connected.

Then, when the plug of the power cord 119 is inserted into the outlet while the hose section 121 is connected to the cleaner body 101, the first
3 As shown in FIG. 3 (a), the voltage applied to the hand control means 130 corresponding to the hand power supply means 167 passes through a time of about 100 ms.
It gradually rises to 15V. On the other hand, when the hose portion 121 is connected to the cleaner main body 101 with the plug inserted in the outlet, that is, in a state where power is already applied to the hand-held power supply means 167, as shown in FIG. 13 (b), The voltage applied to the hand control means 130 rises rapidly to 15 V after a shorter time. Therefore, the hose section 121
Voltage V ₂ but voltages V ₁ reached at time t ₀ when the is connected to the first, which reached at the time t ₀ when connecting a hose 121 for later
Less than. Since V ₀ is set to satisfy the relationship of V ₁ <V ₀ <V ₂ , when the hose portion 121 is connected first, the hose portion 121 is switched to the condenser 505 and the hose portion 121
Is connected to the capacitor 504 later.

Then, the capacity of the condenser 505 is larger than the capacity of the condenser 504, and when the condenser 505 is switched to the condenser 505, a time longer than a reset time of the main body side reset means 205 (hereinafter, referred to as a first reset time), and a blower opening / closing means.
The selection operation of 211 is held in the off position. on the other hand,
When switching to the capacitor 504 is performed, the selecting operation of the blower opening / closing means 211 is held at the off position for a time shorter than the first reset time (hereinafter, referred to as a second reset time).

As described above, the main body reset means 20 has already been set.
5 After the initialization by 5 is completed,
When no is connected, no malfunction occurs. Therefore,
In this case, the reset time of the near-side reset means 501 does not need to be long, but in this embodiment, the second reset
Since the reset time is shorter than the first reset time,
The selection operation of the blower opening / closing means 211 is not held at the off position for an unnecessarily long time, the stop time of the selection operation is short, and the system is quickly shifted to an operable system, thereby improving usability.

In particular, the first reset time should be set in consideration of product variations.
Although it may be necessary to increase the length to about 0.5 to 1.5 s, in such a case, shortening the second reset time is more effective.

In each of the above embodiments, the control unit 162 has the central processing unit 172 including a microcomputer.
The control means may be configured without using a microcomputer.

(Effect of the Invention) According to the vacuum cleaner of the first aspect, after the power is applied to the blower signal processing means by the hand control means, the selection operation of the blower opening / closing means is held at the off position for a certain period of time. Since the time is set longer than the reset time of the main body-side reset means for prohibiting the operation of the control means for a certain time after the power is applied to the control means of the cleaner main body, when the control means does not operate, the power supply at the time of rising of the power supply is set. A signal output corresponding to the on-position caused by instability or the like is not input from the hand control unit to the control unit, so that malfunction can be prevented.

According to the vacuum cleaner of the second aspect, in addition to the effect of the vacuum cleaner of the first aspect, the resetting means for changing the reset time of the local resetting means is provided in the local resetting means. It is easy to use because it is not held in the on position unnecessarily long when needed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing hand control means according to one embodiment of the present invention, FIG. 2 is a circuit diagram showing logic processing means same as above, FIG. 3 is a circuit diagram of the same vacuum cleaner main body, and FIG. FIG. 5 is a block diagram showing a central processing unit, FIG. 5 is a circuit diagram showing the same controller, FIG. 6 is a circuit diagram of the vacuum cleaner main body, FIG. 7 is a perspective view showing the same vacuum cleaner main body, and FIG. FIG. 9 is a front view showing the hand control unit, FIG. 9 is a sectional view of the hand control unit, FIG. 10 is a circuit diagram showing hand control means of another embodiment, FIG. FIG. 12 is a graph showing the operation of the reset means, and FIG. 13 is a graph showing the operation of another embodiment. 101 ... vacuum cleaner body, 107 ... electric blower, 121 ...
Hose part, 130 ... hand control means, 162 ... control means, 16
7 ... power supply means, 171 ... current detection means, 186 ... output control means, 187 ... power control means, 205 ... body-side reset means, 211 ... blower opening / closing means, 277 ... blower signal processing means .., 278: Hand-side reset means, 501: Hand-side reset means, 503: Reset time variable means.

Claims (2)

(57) [Claims] An electric blower includes a vacuum cleaner main body having a control means for controlling an output of the electric blower, and a hose connected to the control means and having a hand control means for controlling an output of the electric blower. A control power supply means for supplying power to the hand control means, a current detection means for detecting a current of the hand control means, and a power control means for driving an electric blower according to an output of the current detection means. Output control means for controlling;
Main body-side reset means for giving a reset signal for prohibiting the operation of the control means to the control means for a certain period of time after power is applied to the control means, and the hand control means comprises a blower opening / closing apparatus for selecting an operation position of the electric blower. Means, a blower signal processing means for generating a signal output corresponding to the blower opening / closing output from the blower opening / closing means, and a selection operation of the blower opening / closing means being held at an off position for a predetermined time after power is applied to the blower signal processing means And a hand-side reset means for supplying a reset signal to the blower signal processing means to the blower signal processing means, wherein the reset time of the hand-side reset means is set to be longer than the reset time of the main body side reset means. 2. The vacuum cleaner according to claim 1, wherein the hand-side reset means has a reset time variable means for changing a reset time of the hand-side reset means.