JPH01232920A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To prevent a cleaner from being damaged due to a surge according to a static electricity by providing an element control means and a protecting means connected to this element control means in parallel and bypassing a current when a voltage higher than a set voltage is impressed to this element control means. CONSTITUTION:A power from a power source is controlled by a bidirectional power control element, and a bypassing means 274 for turning off a motor display means 271 and an insulation transfer means 272 is connected in parallel to the motor display means 271 and the insulation transfer means 272. A constant current means 275 for supplying a constant current is connected to the power source means 167 side of the insulation transfer means 272 and the bypassing means 274, a protecting means 276 for protecting a control means 130 from a surge or the like and having one end grounded is connected to a terminal A, and a terminal B is grounded. Thereby, when the voltage of an element control means 2 is higher than a set voltage, a current is bypassed, thereby, the element control means comparatively weak in a voltage resistance can be prevented from being damaged by the surge according to a static electricity.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a vacuum cleaner having an electric blower whose output can be varied.

(Prior Art) Conventionally, as this type of vacuum cleaner, for example, the configuration shown in FIG. 10 is known. In this vacuum cleaner, an electric blower R12 and a triac 13 for controlling the electric blower are connected in series to an AC power source 11. Further, a phototriac 14 is connected to the control terminal of the triac 13, an electrically insulated light emitting diode 15 is photocoupled to the phototriac 14, and the light emitting diode 15 is further connected to a control circuit 16. has been done.

Then, the control circuit 16 lights up the light emitting diode 15, controls the photo-coupled phototransac 14, controls the triac 13, and controls the electric transmission J! 112
The output is variable.

(Problems to be Solved by the Invention) In the vacuum cleaner shown in FIG.
4 becomes a bypass circuit for electrostatic surge voltage, and due to repeated surges exceeding the withstand voltage, the phototriac 14
has the problem of being destroyed.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a vacuum cleaner that is not destroyed even by surges caused by static electricity.

[Structure of the invention]

(Means for Solving the Problems) A vacuum cleaner of the present invention includes an electric blower and a control means for controlling input of the electric blower, and this control means:
a bidirectional power control element connected in series with the electric blower to a power source; and element control means for controlling the bidirectional +9 power control element, which comprises a light emitting element and a light operating element;
The protection means is connected in parallel to the element control means and bypasses the current when a voltage higher than a set voltage is applied to the element control means.

(Function) The present invention controls the power from a power supply using a bidirectional power consumption i-element to control the output of an electric blower.

When controlling the bidirectional power control element, the light operating element is controlled by the light emitting element of the element control means.

When a voltage higher than the set voltage is applied to the element control means, the protection means bypasses the current.

(Example) Hereinafter, one example of the vacuum cleaner of the present invention will be described with reference to the drawings.

In FIG. 7, reference numeral 101 denotes a vacuum cleaner body, which has a front handle 102 at the front of the vacuum cleaner body 101, and a cover unit 103 pivotably attached to the rear upper part thereof so as to be openable and closable.

A parts storage section 104 is provided inside the cover unit 103, and a hanging opening 105 and a round brush 106 are stored therein. Further, on the front side of this parts storage section 104, an indicator 110 is arranged to indicate the suction capacity of the electric feeder 107 provided inside the vacuum cleaner main body 1. Behind this indicator 110 are light emitting diodes 111, 112. for display purposes. 113. 114
is provided to constitute a level meter 115. Furthermore, a bumper 116 is provided on the circumferential surface of the vacuum cleaner main body 101.

In addition, a pair of wheels 117 and a turning ring are rotatably provided at the lower part of the vacuum cleaner main body 101 on the rear side of both sides and the front side of the lower surface, and a handle 117 is provided on the upper part.
8 is provided so that it can be rotated and stored. Further, a power cord 119 is provided at the rear lower end of the electric lifting machine main body 101, and the power cord 119 is wound and stored by pressing a cord reel button 120 provided at the rear upper end.

Further, a hose portion 12 is provided on the top surface of the vacuum cleaner main body 101.
One main body connecting portion 122 is rotatably and removably attached. A grip tube 125 to which an extendable extension tube 124 is removably inserted and connected is provided at the tip of the hose body 123 connected to the main body connection portion 122, and a hand operation portion 126 is provided in the grip tube 125. It is provided. A connection pipe 129 for a suction port body 128 having a built-in AC brush motor 125 as an electric motor is removably attached to the extension pipe 124.
can be used selectively and interchangeably with the vine mouth 105 or the round brush 106.

As shown in FIGS. 8 and 9, a circuit board 131 of a hand control means 130 is provided in the hand control section 12G, and the hand control section 126 has a cover pipe 132 connected to the hose body 123, It is provided in a connecting tube 133 connected between the grip tube 125 and a display plate 134 is attached to this connecting tube 133. and,
On this display board 134, for example, in the vicinity of the display of r strong 1, there is a strong operation for operating a normally open contact 141 with one circuit and one contact (for example, product name Takto Switch) as an operation switch for varying the output of the electric blower @ 107. A display 143 made of, for example, a light emitting diode is provided to display the button 142 and the operating position of the operation button 142.

Similarly, the normally open contact 14 for automatic is located near the "automatic" display.
4 operation button 145 and display 146, the operation button 148 and display 149 for the sofa's normally open contact 147 near the "weak" display, and the curtain's normally open switch near the "off" display. Operation buttons 151 for the contacts 150 are provided, respectively. Note that a display corresponding to the off operation button 151 is not provided. Further, on the circuit board 131, an operation button 152 for turning on the electric motor and an operation button 153 for turning off the electric motor, which are means for opening and closing the brush electric motor 125, are provided with an operation button 142 for strong operation and a display 143 for strong operation. It is located near the. Furthermore, the operating button 152 for turning on the electric motor and the operating button 153 for turning off the electric motor each have a normally open contact 154.
155 is provided, and a light emitting diode 156 for the motor as an electric VJ machine display means is provided near the operation button 153 for turning on the motor.

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

In FIG. 3, 161 is a commercial AC power source, and this commercial AC power source 161 is connected to a control means 162, and this control means 162 is connected to an electric blower @ 107, and the electric blower 1 is connected to the control means 162.
Controls the output of 07.

This control means 162 has a primary winding 164 of a step-down transformer 163 connected to a commercial AC power source 161.
A rectifying means 16G for rectifying alternating current into a pulsating current is connected to the secondary winding 165 of 63, and a hand power source means 167 for converting the alternating current into a constant voltage of a different voltage value is connected to each of the 11 means 16G.
and constant voltage means 168 are connected. For example, this hand ii'F power supply means 167 is connected to a terminal A for supplying current to the hand control means 130. terminal A,
A protection means 170 for protecting the hand control means 130 is connected to Bfi, a current detection means 171 for detecting the current from the hand control means 130 is connected to the terminal B, and the central processing unit 1 is composed of a microcomputer.
72.

Further, the hand power source means 167 is connected to a constant current means 173 that maintains a constant current value, and this constant current means 1γ3 is
Air path detection means 174 that detects the pressure or flow rate in the air path of the vacuum cleaner main body 101 and this air path detection means 174
The detection means 176 is connected to a detection means 176 consisting of a conversion means 175 for converting the detected value of 1 to an electrical output. This detection means 176 is connected to the central processing unit 172 via amplification means 177 that amplifies the output of this detection means 176. Since the constant voltage means 168 drives the central processing unit Iff 172, it is directly connected to this central processing unit 172, and also serves as an initializing means 1 for returning the program progress 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 78.

Furthermore, the primary winding 165 of the transformer 163 has a commercial power current 11! Detecting 161 zero volts and 5
A zero-crossing detection means 179 for frequency identification of 011z and 60112 is connected, and this zero-crossing detection means 179 is connected to the central processing unit 172. The handheld power source means 167 is also connected to a display means 181 for displaying the output of the electric blower 107 or the operating position of the handheld control means 13G via the current limiting means 180, and this display means 181 is connected to the central processing 1i 1172. . Further, a sounding means 183 is connected to the central processing unit 172 via a sounding driving means 182 to notify abnormalities such as clogging.

Then, the central processing unit @ 172, the driving means 184, the element 11 consisting of the light emitting element 185 and the light receiving operation element 18G.
i1Jtl1 means 187 and this element control means 187
The output control means 189 is connected to a bidirectional power control element 190 connected between the commercial AC power supply 161 and the electric blower @ 107 with a protection means 188 connected in parallel to the output control means 189 . ing.

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

Zero cross detection means 179 is zero cross input means 191
The initializing means 178 connects the current detecting means 171 and the amplifying means 177 via the initializing manual means 192.
Through the A/D conversion means 194 which is connected to the input switching means 193 which alternately switches the input from and digitizes,
It is connected to a data transport means 195 that reads and reads each data. Display means 181
is connected to display opening/closing means 196 that turns on and off this display.

The data transfer means 195 is connected to a storage means 199 consisting of a data storage means 197 and a temporary storage means 198. It stores data that is converted into an output corresponding to the force and stored. The data transfer means 195 is connected to a calculation processing means 200 that calculates the outputs from the first stage of manual switching 193 and the storage means 199 to a set suction capacity. From the data conveyance means 195, a display output means 201 connected to the display opening/closing means 196 to move the display opening/closing means 196, a sound outputting means 202 connected to the sounding driving means 182 and driving the sounding driving means 182, and an output control Output means 203 are connected to the drive means 184 of the means 202 and actuate the drive means 184, respectively.

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

In FIG. 4, reference numeral 211 is a blower III opening/closing means whose one end is grounded, and this blower opening/closing means 211 is connected to the electric blower 1.
07 operation stage, cut blower amplification means 212 for off selection, automatic blower opening/closing means 213 for automatic selection, weak blower I51 opening/closing means 214 for station selection, and strong blower I51 opening/closing means 214 for station selection. It consists of a blower opening/closing means 215. Further, 216 is a motor opening/closing means whose end is grounded, and this motor opening/closing means 216 is a brush electric l1112.
This selects the operation stage 5, and the brush electric motor 125
Cutting motor opening/closing means 217 for selection of off, drive motor opening/closing means 2 for drive selection of brush electric lfi 125
It consists of 18.

Then, the blower opening/closing means 211 and the electric motor opening/closing means 2
16 is connected to a logic processing means 219, and this logic processing means 219 sets mutual interlocking or non-interlocking operations according to the operation stage set by the blower opening/closing means 't11 and the operation stage set by the motor opening/closing means 216. This logic processing means 219 processes the cutting feed I! from the cutting motor opening/closing means 216 as shown in FIG. A diode 220 is connected to the four-air rtfl flywheel means 212, and a diode 221 is connected from the automatic blower opening/closing means 213 to the drive motor opening/closing means 218.

Further, the logic processing means 219 includes the logic processing means 2
Logic processed sending J at 19! A blower signal load means 222 that generates a signal output corresponding to the blower opening/closing output from the blower opening/closing means 211 is connected, and this blower signal load means 222 is a cut-off blower signal load that sets the electric blower 107 to turn off. Means 223, automatic blower signal load means 224 for setting automatic operation of electric blower TA107, bale blower signal load means 225 for setting weak operation of electric blower 107, and strong blower for setting strong operation of electric blower ill 107 It consists of signal loading means 226.

The blower signal load means 222 includes a blower signal load means 2.
A blower amplifying means 227 is connected to the blower amplifying means 227 for amplifying the signal output from the cutting blower signal loading means 223, and the blower amplifying means 227 is connected to the cutting blower signal loading means 223 and is a cutting blower amplifying means for amplifying the output of the cutting blower signal loading means 223. means 228,
This automatic blower I! is connected to the automatic blower signal load means 224. Automatic blower amplification means 229 that amplifies the output of the In signal load means 224, weak feed +! This weak transmitter signal load means 225 is connected to the I signal load means 225.
The air blower amplifying means 230 is connected to the blower signal loading means 226 for strong use and is connected to the blower signal loading means 226 for strong use to amplify the output of the blower signal loading means 226 for strong use. I sent this! The IIR amplification f stage 221 is connected via a blower mutual reset means 232 to a blower IJa machine storage means 233 that stores the output of the blower signal load means 222 . A cut-off blower amplification means 234 and an automatic blower signal load means 22 for storing the output of the
The automatic blower storage means 235 stores the output of 4, and the weak blower J! stores the output of the bale blower signal load means 225.
I machine storage means 236 and strong blower signal loading means 22
It is composed of a strong feed ff1l storage means 237 that stores the output of 6. Then, when any signal of the blower signal load means 222 is re-inputted into any of the blower storage means 233, mutual reset is performed by the blower Jllll mutual setting means 232.

A blower output buffer 7 means 238 whose one end is grounded is connected to the blower storage means 233, and this blower output buffer means 238 is connected to an automatic blower output buffer means 239 connected to the automatic blower storage means 235, a low blower It is composed of individual blower output buffer 7 means 240 connected to storage means 236 and strong blower JJa II buffer door means 241 connected to strong blower storage means 237. Note that when the output of the cut-off motor storage means 234 is not used, the output buffer 7 means corresponding to the cut-off storage means 234 may not be provided as shown in the embodiment.

The blower output buffer 7 means 238 includes the blower output buffer 7 means 238.
A current variable means 246 that outputs a current corresponding to the output of 33 to the current detection means 171 of the vacuum cleaner main body 101 is connected, and this current variable means 246 outputs a current corresponding to the output of the automatic air blowing mode storage means 239. automatic current variable means 247 that outputs a current of
48 and a strong current variable means 249 that outputs a strong current corresponding to the output of the strong blower storage means 241, and these current variable means 246 are connected to the terminal A.

Further, the logic processing means 219 includes the logic processing means 2
A motor signal load means 251 that generates a signal output corresponding to the motor opening/closing output from the current variable means 21G subjected to logic processing in step 19 is connected, and this motor signal load means 251 sets the brush motor 125 to be turned off. It is composed of a cut-off motor storage means 252 and a drive motor load means 253 for setting the drive of the brush electric motor 3125.

The motor signal load means 251 includes the motor signal load means 2
A motor amplifying means 254 for amplifying the signal output from the cutting motor signal loading means 251 is connected to the cutting motor amplifying means 254 for amplifying the signal output from the cutting motor signal loading means 252 . means 255,
The driving motor amplifying means 256 is connected to the driving motor signal loading means 253 and amplifies the output of the driving type VJ machine signal loading means 253. This motor amplification means 254 is connected to a motor storage means 258 via a motor mutual reset means 251, and this motor storage means 258 includes a cut-off motor storage means 259 that stores the output of the cut-off motor signal load means 252, and The drive motor storage means 260 stores the output of the drive motor load means 253. And motor storage means 2
When any signal of the electric motor f4 direction means 251 is re-inputted to any of the signals 58 and 58, the transmission l! Until mutual reset means 257 performs mutual reset.

The cut-off motor storage means 259 of the motor storage means 258 includes a cut-off motor output buffer 7 means 261 whose one end is grounded.
is connected. Note that the drive motor storage means 260
No motor output buffer means is connected to the motor output buffer means.

In addition, the air blowing depth display means 242 includes electric brush brush vs.
A motor display means 271 for displaying the drive of the brush motor 125 and an insulated transmission means 212 for controlling the brush motor 125 are connected in series to the terminal A.

This insulation transmission means 272 is connected to a brush motor control means 273 that controls the electric power of the brush molds 111! It is connected to the control unit 162 of the machine body 101 and also to one end of the brush motor 125 via the terminal F, and the other end of this brush motor 125 is connected to the terminal E and the terminal C.
It is connected to the control section 162 of the vacuum cleaner main body 101 via.

Furthermore, electric motor display means 271 and insulation transmission means 27
2, a motor display means 271 and an insulated transmission means 2
Bypass means 274 is connected to turn off the motor output buffer 7 means 2.
61 is connected.

Further, the constant current means 2 supplies a constant current to the hand power source means 167 side of the insulated transmission means 212 and the bypass means 274.
75 is connected.

Furthermore, a protection means 276 that protects the hand control means 130 from surges, etc., whose one end is grounded is connected to the terminal A.
Terminal B is grounded.

Next, a specific circuit of the above embodiment will be explained with reference to FIGS. 3 and 6.

A triac 190 as a bidirectional power control element of the control means 162 and an electric blower @ 107 are connected in series to the commercial power supply 11i 161 via a fuse 281, and the triac 190 is connected to a resistor 283 and a capacitor. A snubber circuit 285 for protecting the TRIAC 190 consisting of TRIAC 190 is connected thereto. Further, terminals C and D are provided at both ends of the commercial AC power supply 161. In addition,
Electric fan @ 107 has this one! A capacitor 286 is Δ-connected to both ends of the commercial AC power supply 161 via the dynamic blower 107 and the fuse 281. A noise prevention circuit 289 for noise prevention consisting of 287°288 is connected.

A primary winding 164 of a transformer 163 is connected to the commercial AC power supply 161 via a fuse 281, and this - secondary winding 164 is connected to the commercial AC power supply 161 via a fuse 281.
4 is a protective fuse 291 connected in parallel and series.
and varistor 292 are connected.

The secondary winding 165 of the transformer 163 includes a diode 295 as a rectifying means 166. 296. 297. 298
A diode bridge 299 consisting of
For example, a three-terminal regulator 301 for a constant voltage of 12 V of the m means 167 is connected. One end of this three-terminal regilter 301 and the diode bridge 299
A smoothing electrolytic capacitor 302 and a capacitor 303 connected in parallel are connected between the negative electrode of the diode bridge 299 and an electrolytic capacitor 304 and a capacitor 303 connected in parallel.
5 are connected to each other.

Further, a three-terminal regulator 306 for a constant voltage of, for example, 5V of the constant voltage means 168 is connected to the DC output side of the diode bridge 299, and this three-panel regulator 306 is connected to the DC output side of the diode bridge 299.
I between one end of 306 and the negative pole of diode bridge 299
! A capacitor 307 is connected to (2), and a smoothing electrolytic capacitor 308 and a capacitor 309 are connected between the other end of the 3I dollar regulator 306 and the negative electrode of the diode bridge 299. , # diode bridge 2
The collector of an NPN type transistor 312 having a bias resistor 311 between the emitter and base is connected to the positive output side of the transistor 99, and the base of this transistor 312 is connected to the
NP with bias resistor 313 between emitter and base
An N-type transistor 314 is connected, and the emitter of this transistor 314 is connected to the negative side of the diode bridge 299. Further, the base of the transistor 312 and the collector of the transistor 314 are connected to the resistor 31.
5 to the three-terminal regulator 301, and the base of the transistor 314 to the central processing unit 1 via a resistor 316.
72. 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. The negative electrode of the diode bridge 299 is connected to a terminal via a varistor 321, a capacitor 322, and a toroidal coil 323 connected in parallel to the protection means 170, and a varistor 324, a capacitor 325, and a toroidal coil 32G connected in parallel. It is connected to terminal B via. A resistor 171 as a current detection means is connected between this terminal B and the negative electrode of the diode bridge 299.
A resistor 325 is connected between them.

The three-terminal regilter 306 and the diode bridge 2
99, a smoothing electrolytic capacitor 331 is connected. Further, the three-panel regulator 306 is connected to an inverting input terminal of an operational amplifier 173 serving as a constant current means, and a resistor 332 is connected to a normal input terminal. Further, a detection means 176 is connected between the output terminal of the operational amplifier 173 and the resistor 332, and this detection means 176 is made of a semiconductor such as silicon diffused, and equivalently has resistors 333, 334, 335. It constitutes a resistor bridge consisting of 336 resistors. Of these, resistor 333 and resistor 3
A variable resistor 337 as an offset gain for gain adjustment is connected between 34 and the slider of this variable resistor is connected to the non-inverting input terminal of an operational amplifier 339 of the amplifying means 177 via a resistor 338. The connection point of the resistor 336 is connected to the inverting input terminal of the operational amplifier 339 via the resistor 340, and the resistor 34 is connected between the inverting input terminal and the output terminal.
1 is connected. Further, a resistor 343 is connected to the normal input terminal of the operational amplifier 339, which is connected from the inverting input terminal of the operational amplifier 173 to the output terminal of an operational amplifier 342 forming a voltage follower circuit. Also,
The output terminal of the operational amplifier 339 is connected to the inverting input terminal of the operational amplifier 345 via a resistor 344, and the non-inverting input terminal is connected to the output terminal of the operational amplifier 342 via a resistor 346.

A resistor 347 and a semi-fixed resistor 348 for amplification adjustment 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 connected to a diode bridge via a resistor 349. It is connected to the negative pole of 299.

Further, the three-terminal regulator 30B is connected to the negative electrode of the diode bridge 299 via a resistor 331, a Zener diode 352, and a resistor 353 of the initializing means 178. An NPN transistor 35 is connected to the connection point between the cathode of the Zener diode 352 and the resistor 353.
The base of transistor 354 is connected to the three-terminal regulator 301 of first constant voltage means 167 via resistor 355, and the collector of transistor 354 is connected to the three-terminal regulator 301 of first constant voltage means 167.
The emitter of transistor 54 is connected to the base of NPN type transistor 356, the collector of this transistor 356 is connected to the positive pole of diode bridge 29 through central processing unit 172 and resistor 357, and the emitter of transistor 356 is connected to the negative pole of diode bridge 299, respectively. has been done. Furthermore, a light emitting diode 362 . 363 are connected, and these light emitting diodes 362 . A phototransistor 364 is photocoupled to 363.

The collector of this transistor 364 is the constant voltage means 16
The emitter of this transistor 364 is connected to the central processing unit 172 and the resistor 3 to the three-terminal regulator 306 of 8.
65 to the negative electrode of the diode bridge 299. One end of a resistor [0 as a current limiting means] is connected to the three-terminal regulator 301, and the other end is a light emitting diode 111, 112, 113 connected in parallel to the display means 181.
．． 114, and these light emitting diodes 111. 112. 113. The cathode of 114 is connected to the central processing bag @172. Sound drive means 1
One end of the resistor 371 of 82 is connected to the central processing unit 172, and the other end is connected to the base of a transistor 373 having a bias resistor 372 between the emitter and base, and the emitter of this transistor 373 is connected to the diode bridge 29.
9, the collector of this transistor 373 is connected to a buzzer 376 of the sounding means 183 having a resistor 375 in parallel, and a three-terminal regulator of the hand power source 161.
301.

Further, a capacitor 381 . 382 is connected, and a resistor 383 and a central processing bag I! ! ! The emitter 384 for the clock of the device 172 is connected in parallel.

Furthermore, the central processing unit 112 is connected via a resistor 391 of the output control means 189 to a transistor 393 having a bias resistor 392 between its emitter and base, and the emitter of this transistor 393 is connected to the diode bridge 2.
The collector of this transistor 393 is connected to the negative terminal of the transistor 99 and the light emitting diode 18 as a light emitting element of the insulating means 187.
5. It is connected to the three-terminal regulator 301 of the handheld power supply means 167 via a resistor 395.

The light emitting diode 185 is electrically insulated and connected to a phototriac 186 as a light receiving operation element by photocoupling, and the phototriac 186 connects the triac 190 and the electric blower 137 via the gate of the triac 190 and a resistor 391. connected to a connection point. Further, a surge protector 399 consisting of a discharge gear element as a protection means 188 is connected in parallel to the phototriac 186, and a diode 398 is connected in antiparallel to the light emitting diode 185.

Next, a specific circuit of the hand control means 130 shown in FIG. 4 will be explained with reference to FIG. 6.

Zener diode 4 connected in parallel between terminals A and B
00, a protection means 27G consisting of a capacitor 401 for removing one high frequency sound and an electrolytic capacitor 402 for removing low frequency noise such as electric blower l1a137 is connected.

Terminal A is connected to a cut-off blower signal load means 223 consisting of a load resistor 404 having a noise prevention capacitor 403 in parallel.
, a load resistor 4 with a noise prevention capacitor 405 in parallel
One end of each of the automatic blower signal load means 224 consisting of 06, the wound blower signal 4 listening means 225 consisting of a load resistor 408 having a noise prevention capacitor 407 in parallel, and the load resistor 410 having a noise prevention capacitor 409 in parallel. It is connected. Between the other end of the load resistor 404 of the cut-off blower signal load means 223 and the terminal B, there is a cut-off blower opening/closing means 212 consisting of a normally open contact 150 having a parallel resistor 411 for preventing malfunction in parallel. , Automatic delivery I! An automatic blower opening/closing means 213 and a partial blower signal loading means 226 are connected between the other end of the load resistor 406 of the In signal load means 224 and the terminal B, and are composed of a normally open contact 144 having a parallel resistor 412 for preventing malfunction in parallel. Between the other end of the load resistor 406 and the terminal B, there is a normally open contact 147 having a parallel resistor 413 for preventing malfunction in parallel. Between the other end of 410 and terminal B, there is a strong power transmission I! consisting of a normally open contact 141 having a parallel resistor 414 for preventing malfunction in parallel. ll! ! 1 time closing means 215 is connected. In addition, the cutting method ff1 machine opening means 212
An initializing capacitor 415 is connected in parallel with the parallel resistor 411 and the normally open contact 152.

In addition, a capacitor 421 for noise prevention is connected to terminal A in parallel.
It is connected to one end of a cutting motor signal load means 252 consisting of a load resistor 422 having a load resistor 422 and a drive motor signal load means 253 consisting of a load resistor 424 having a capacitor 423 for noise prevention in parallel. Between the other end of the cut-off motor signal load means 252 and the terminal B, there is a normally open contact 1 having a bypass resistor 425 connected in parallel to prevent malfunction.
55 is connected, and between the other end of the drive motor signal load means 253 and the terminal B, a normally open contact 154 having a bypass resistor 426 connected in parallel for preventing malfunction is connected. Furthermore, a load resistor 428 having a capacitor 427 for noise prevention in parallel and a resistor 429 for preventing malfunction are connected in series from terminal A to terminal B.

431 and 432 are integrated circuits (ICs), and these ICs
431 and 432 are sent! i1 machine amplification means 227, blow source mutual reset means 232, blow mode storage means 233, blower output buffer means 238, motor amplification means 254, motor mutual reset means 257, electric line storage means 258 and motor output buffer 7 means 261. It has a function. And 1C431 terminal ■, terminal ■, terminal ■
, terminal ■, terminal ■ of IC432, and terminal ■ are connected to terminal A and capacitor 43 for initialization.
3 to terminal B, and terminals ■ and I of IC431.
Terminals ■ and ■ of C432 are connected to terminal B. The connection point between the load resistance 284 of the cut-off blower signal load means 223 and the normally open contact 150 of the cut-off blower i opening/closing means 212 is the terminal ■ of IC431, the load resistance 406 of the automatic use Jl1 machine signal load means 224 and the automatic blower Opening/closing means 213
The connection point with the normally open contact 144 is the terminal ■ of IC431, and the connection point between the load resistor 408 of the partial blower signal load means 225 and the normally open contact 147 of the weak blower opening/closing means 214 is the IC431 terminal
The terminal [phase] of 431, the connection point between the load resistor 410 of the strong blower signal load means 226 and the normally open contact 141 of the strong blower opening/closing means 215 is connected to the terminal ■ of IC431, respectively, 252 load resistance 422
The connection point between the normally open contact 155 of the cut-off motor opening/closing means 271 is the terminal ◎ of 1c432, and the drive motor signal load means 2
The connection point between the load resistor 42G of 53 and the normally open contact 154 of the driving motor opening/closing means 218 is connected to the terminal (2) of the IC 432. Also, the terminal [phase] of IC431 and IC43
2 terminal ■ is connected, and IC431 terminal ■ and IC4
32 terminal ■ is connected, IC431 terminal ■ and IC
Diode 435 and IC431 are connected between terminal 432 and terminal ■.
Diode 43 is connected between terminal 0 of IC432 and terminal ■ of IC432.
G is connected.

Furthermore, the normally open contact 150 of the blower opening/closing means 212 for cutting and the method for cutting J! Load resistance 4 of lta signal load means 223
04 connection point and the normally open contact 1 of the cut-off motor opening/closing means 217
55 and the load resistance 4 of the cut-off motor signal load means 252
A diode 220 is connected between the connection point 22 and the normally open contact 144 of the automatic blower opening/closing means 213.
and load resistance 40 of automatic blower signal load means 224
6 connection point and the normally open contact 1 of the drive motor opening/closing means 218
A diode 221 is connected between the drive air blower 54 and the connection point of the load resistor 424 of the return signal load means 253, and the diode 220 and the diode 221 constitute the logic processing means 219.

An automatic display means 243 consisting of a light emitting diode 14G having a compensation resistor 441 in series is connected to the terminal ■ of the 1C431.
, a weak display means 244 consisting of a light emitting diode 149 having a compensation resistor 442 in series with the terminal ■, and a light emitting diode 143 with a compensation resistor 443 connected in series with the terminal ■.
A strong display means 245 consisting of these light emitting diodes 143 . 146 and 149 are connected to a light emitting diode 271 as a current detection means and a light emitting diode 444 of an insulated transmission means 272. Furthermore, a phototriac 445 is photocoupled to the light emitting diode 272 of the insulated transmission means 212. This phototriac 445 is connected via a resistor 446 to one end and gate of a triac 273 serving as current detection means. The triac is connected to the vacuum cleaner main body 101 via a terminal, and is also connected to the - end of the brush electric blower 125 via a terminal F.
The other end of the brush mold initial feed f@JR125 is connected to the vacuum cleaner main body 101 via terminals E and C.

A resistor 249 as a force current variable means is connected to the terminal (■) of the IC432, and a resistor 24 is connected to the terminal (■) as a wound current variable means.
8 are connected, and these resistors 249 . 248 is connected to terminal A. Note that in this embodiment, the automatic current variable means 247 is not specially provided, and the light emitting diode 1 of the automatic transmitter display means 243 is used as the automatic current variable means 247.
46 and a compensation resistor 441 are used.

In addition, the terminal 4 of the IC432 is connected to the bias resistor 4 between the base and emitter of the bypass means 274 via the resistor 451.
52 and light emitting diodes 271, 272
A PNP type transistor 453 whose emitter and collector are connected is connected to both ends of the transistor.

Further, two so-called constant current diodes (for example, Ishizuka Electronics Model 2E) connected in parallel are connected to the anode of the light emitting diode 272 and the emitter of the transistor 453.
-452) 461. Constant current means 2 consisting of 462
75 and a transistor driving resistor 463 connected in parallel to the constant current means 275.

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

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, then made into a constant voltage by the constant voltage means 168, and then by the central processing Ig'I device by the initializing means 118. Initialize the contents of 172.

Further, the voltage is made constant by the handheld power supply means 167, and outputted to the handheld control means 130 via the transmission line. Then, when the phase angle of the commercial AC power supply 161 is Oo or 180°, the voltage zero volt is detected by the pyrocross detection means 179, and the output of the current detection means 171 is sent to A via the input switching means 193.
/D conversion means 194, and the outputted current values are averaged and stored in temporary storage means 198. When it is determined that this current value is set to "F strong", the trigger time of the triac 190 is set to "strong", and the trigger time of the triac 190 is set to a value corresponding to the output of "strong", and when it is determined that this current value is set to "weak", the triac 190 is set to "strong". The trigger time is set to a value corresponding to the output of "weak" and "1". Also, when it is determined that it is set to "off", the triac 190 is not triggered.

Further, when it is determined that the automatic setting is set, the average value of the output voltage from the air path detection means 174 is set, and this average value is compared with the data in the data storage means 197, and the calculation processing means 200 Process the cylinder.

Then, the output control means 189 outputs a trigger according to each set triac trigger time.

In addition, the hand control means 130 also controls the electric blower 1, for example.
If you want to set the output of 07 to "strong", press the firing operation button 142 and press the firing button 142. ! After the opening/closing means 215 is activated to activate the strong blower signal loading means 226 and the signal is amplified by the strong blower amplifying means 231, the previous memory is reset by the blow source mutual resetting means 232 and stored in the strong blower storage means 237. .

Then, the output made constant by the constant current means 215 lights up the light emitting diode 143 of the hand operation section 126, and the level meter of the electric eliminator main body 101 is turned on.
115 is a light emitting diode 111°112,
113. 114 are all lit to indicate that it is "strong".

Further, when the individual operation button 148 is pressed, the electric blower 107 outputs a weak output in a similar manner, the individual light emitting diode 149 of the hand operation unit 126 lights up, and the electric h1 remover main body 101 lights up. Level meter 115 is r
Only one light emitting diode 111 indicating "weak" is turned on. In this embodiment, especially the automatic current variable means 2
47 is not provided, and the current detection means 171 detects the current set by the constant current means 215 and automatically sets the current.

When setting the output of the first electric power feeder Ju1 unit 137 to automatic, press the automatic operation button 145 to set it to automatic, the automatic display 146 on the hand operation section 126 lights up, and the vacuum cleaner main body 101 light emitting diode 111.
112. 113. 114 blinks in accordance with the output of the first electric transmitter m unit 107.

Further, when turning on the brush motor 125, 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 diode 221 of the logic processing means 219 outputs an automatic blower signal. The loading means 224 is activated. When the drive motor signal load means 253 operates, the drive motor signal is amplified by the drive motor amplification means 256 and the motor mutual reset means 2
51, the brush motor 1 is stored in the drive motor storage means 260.
At the same time, the stored contents of the cut-off motor storage means 259 are reset, the base current of the transistor 453 of the bypass means 274 is stopped, and the current bypassed by the bypass means 274 is transferred to the brush motor 1.
25 is being driven, and the light emitting diode 444 of the insulated transmission means 272.

Note that this light emitting diode 271 and the insulated transmission means 2
The current flowing through 72 or bypass means 274 is made constant by constant current means 275 and always takes a constant current value. Then, the photo-coupled phototriac 445 turns on, turning on the triac 273 and driving the brush motor 125. In addition, automatic feed 1
When the noise signal loading means 224 is driven, the electric blower 107 is driven in an automatic state.

On the other hand, to turn off the brush motor 125, close the operation button 153 of the cut-off electric m opening/closing means 217 to turn off the cut-off electric motor! 1tlla signal loading means 252 is activated.

By operating the cutting motor signal load means 252,
The cut-off motor amplification means 255 amplifies the output, and the motor mutual reset means 257 stores in the cut-off motor storage means 259 that the brush motor 125 is to be turned off, and also resets the memory contents of the drive motor storage means 260 to set the motor output. The current flowing through the light emitting diode 271 and the light emitting diode 454 of the insulated transmission means 212 is outputted by the buffer means 261, and the base N current is applied to the transistor 453 of the bypass means 274, indicating that the brush motor 125 is being driven. Bypass means 274. Then, the light-emitting diode 444 of the insulated transmission means 272 is turned off, the photo-triac 445 is not triggered, the triac 273 is turned off, the brush motor 125 is turned off, and the light-emitting diode 444 is turned off and the brush motor 125 is turned off. Indicates that the light is off.

When the off operation button 151 is pressed, the off air blower opening/closing means 212 is activated, and the off air blow*signal loading means 22 is activated.
3 is operated, and the diode 220 of the logic processing means 219 operates the cutting motor signal load means 252. As a result, the electric blower 107 stops, the brush electric motor 125 stops, and the electric blower 1
The display means 181 indicating the drive of the brush motor 12
The light emitting diode 211 indicating the drive of No. 5 is also turned off.

In addition, when a surge occurs due to static electricity in the vacuum cleaner body 101 or hose portion 121, the toroidal coil 323. 326 absorbs surge.

When a high voltage higher than the set voltage set to a voltage value lower than the withstand voltage of the phototriac 186 due to this surge etc. is applied to the phototriac 186, the N current is bypassed to the length protector 399 and the reverse current is applied to the light emitting diode 185. When high voltage is applied, diode 3
98 to protect the phototriac 186 and light emitting diode 185.

Note that since there is no leakage current in the discharge gap, there is no malfunction or R influence on the circuit.

If clogging or the like occurs, the sound generation drive means 182 drives the buzzer 316 of the sound generation means 13.

Further, as the protective hand rQ18B, an element such as a Zener diode or a varistor connected in series in the opposite direction can be used as long as it has a low capacitance and leakage current is extremely small.

〔Effect of the invention〕

According to the present invention, by providing the protection means in parallel with the element control means and bypassing the current when the voltage of the element control means is higher than the set voltage, the element control means having a relatively weak withstand voltage can also be protected against surges caused by static electricity. Therefore, it is possible to prevent damage caused by surges of static electricity.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram of an electric vacuum cleaner according to an embodiment of the present invention; Fig. 2 is a block diagram showing the central processing unit of the same;
The figure is the circuit diagram of the vacuum cleaner body, and Figure 4 is the manual control l.
5 is a circuit diagram showing the same logic processing means, FIG. 6 is a circuit diagram showing the upper permission control section,
FIG. 7 is a perspective view showing the vacuum cleaner body, FIG.
FIG. 0 is a block diagram of a conventional vacuum cleaner. 107...Electric feed 1i, 161...Power supply, 162
...Control means, 185.. Light emitting diode as a light emitting element, 186.. Phototriac as a light receiving operation element, 188.. Protection means, 190.. Triac as a bidirectional power control element.

Claims (1)

[Claims] (1) An electric blower and a control means for controlling the input of the electric blower, the control means including a bidirectional power control element connected in series with the electric blower to a power source, a light emitting element and a light operating element. an element control means for controlling the bidirectional power control element, and a protection means connected in parallel to the element control means to bypass the current when a voltage higher than a set voltage is applied to the element control means. A vacuum cleaner with this feature.