JPH0738841B2 - Vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Industrial field of application) The present invention automatically detects the output of an electric blower for dust collection built in an electric vacuum cleaner body by sensor output such as clogging of a filter. The present invention relates to an electric vacuum cleaner that can be used with a constant suction capacity after being corrected to.

(Prior Art) As a conventional electric vacuum cleaner of this type, for example, the configurations shown in FIGS. 14 and 15 are known.

In FIG. 14, reference numeral 1 denotes an electric vacuum cleaner main body, and inside the electric vacuum cleaner main body 1, a dust collecting part (not shown), an electric blower 2,
A control unit 3 for controlling the output of the electric blower 2 and the like are provided. A changeover switch 4 for switching the output of the electric blower to “strong”, “automatic”, and “weak” is provided at the upper rear end of the electric vacuum cleaner body 1, and the hose portion 6 of the hose portion 6 is provided at the opening 5 of the inclined surface. The main body connecting portion 7 is connected.

The body connecting portion 7 is connected to a hose body having a transmission line therein, and the hose body 8 is connected to a connecting pipe 9.
This connection pipe 9 has a hand control unit 10, and the hand control unit 10 is provided with an on / off switch 11. An extension pipe 12 is connected to the connection pipe 9, and a suction port body 13 is connected to the extension pipe 12.

Next, a block diagram of the electric vacuum cleaner will be described with reference to FIG. Reference numeral 21 is an AC power supply, and this AC power supply 21 is connected to the electric blower 2 via the control unit 3.

The AC power supply 21 also, via the voltage step-down transformer 21,
It is connected to a rectifying means 23 for rectifying alternating current into a pulsating flow, and this rectifying means 23 is connected to an opening / closing means 24 for turning on / off a power source
The opening / closing means 24 is connected to a constant voltage means 25 for making the pulsating flow a constant voltage. Further, the constant voltage means 25 is connected to the ON / OFF switch 11 of the hand control unit 10 via the resistor 26 and is connected to the current detection means 27, and the current detection means 27 turns ON / OFF the ON / OFF switch. Comparison circuit 28 for detecting
It is connected to the opening / closing means 24 via.

The constant voltage means 25 is a manual setting means 31 for manually setting the output of the electric blower 2, a flow rate detecting means 32 for detecting the flow rate of the wind in the air passage, and an electrical output of the flow rate detecting means 32. It is connected to the detection means 34 which is composed of the conversion means 33 for converting into. Then, the detection means 34 via the amplification means 35
Is connected with the manual setting means 31 to the manual switching means 36 including the changeover switch 4 for switching between manual and automatic,
The manual switching means 36 is connected to the trigger means 37 together with the zero-cross detecting means 38 connected to the secondary winding of the transformer 22, and is connected between the AC power supply 21 and the electric blower 2 via the insulating means 39. It is connected to the power control means 40.

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

The voltage from the AC power source 21 is stepped down by the transformer 22, and the rectifying means 23
Rectify with. In the opening / closing means 24, comparing means 28 for judging the state of the on / off switch 11 detected by the current detecting means 27.
Power is turned on and off by the output of. Then, the pulsating current is made constant by the constant voltage means 25, and the constant voltage is supplied to each means.

Further, the manual switching means 36 switches between manual and automatic, with a constant input in the case of the manual setting means 31, and in the case of automatic, the flow rate detecting means 32 detects the flow rate in the air passage and this is electrically output by the converting means 33. And is amplified by the amplifying means 35 so that the wind has a constant pressure or flow rate, and each is triggered by the trigger means 37. At this time, the zero-cross detector 38 detects zero volt. Then, the power of the AC power supply 21 is controlled by controlling the input of the electric blower 2 by providing the trigger output to the electric power control means 40 by insulating with the insulating means 39 to control the suction force of the electric blower 2. It is a thing.

(Problems to be Solved by the Invention) However, in the conventional vacuum cleaner described above, the circuit in the vacuum cleaner body 1 is a control circuit that is a combination of analog circuits, and a deviation in the control width and timing of the trigger is likely to occur. Especially, since it takes time for the electric blower 2 to start up and become stable, even if the reading of the sensor is fast, the output of the sensor becomes unsuitable for control, and the operation becomes unstable at the beginning of movement.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an electric vacuum cleaner whose operation is stable from the beginning even when the output of the electric blower is controlled by the detection means.

[Structure of Invention]

(Means for Solving Problems) An electric vacuum cleaner according to the present invention includes a dust collector, an electric blower, a detection unit that detects the suction capacity of the electric blower, and a control unit that controls the output of the electric blower. And a hose portion detachably connected to the electric vacuum cleaner body, wherein the detection means detects the pressure or the flow rate in the air path of the electric blower. And a conversion means for converting the output of the air path detection means into an electrical output, and the hose portion includes a hand permission control means for controlling the electric blower, the hand permission control means and the vacuum cleaner body. A hose body including a transmission line to be connected, wherein the control means detects a current output from the hand control means, and an output corresponding to a suction force set with respect to the output of the detection means. Recorder to convert and memorize A stage, an arithmetic processing means for arithmetically processing an output from the storage means to a set suction capacity, and an output means for outputting an electric blower according to the output of the arithmetic processing means. When the blower operates according to the output of the detection means, the output means drives the electric blower with a constant output signal within the control range during the time until the operation of the detection means rises after the power is turned on. Is.

(Operation) In the present invention, the air passage detecting unit detects the pressure or flow rate in the air passage of the electric blower, and the converting unit converts the output from the pressure detecting unit into an electrical output.

Then, when the electric blower operates according to the output of the air passage detecting means of the detecting means, the output means is within the control range during the time until the operation of the air passage detecting means of the detecting means rises after the power is turned on. The electric blower is driven by a constant output signal of.

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

In FIG. 4 and FIG. 5, 41 is a vacuum cleaner main body, which is a main body case 43 having an opening 42 formed in an upper front portion thereof, and a lid whose rear end is axially attached to the main body case 43 to open and close the opening 42. It consists of body 44. The main body case 43 is composed of a lower main body case member 45 and an upper main body case member 46 that is fixedly coupled to the upper side of the lower main body case member 45.
A front handle 47 is provided at a front portion of the main body case 43, and a cover body 48 is rotatably and axially attached to a rear upper portion of the upper main body case member 46. Inside the cover body 48, a component storage section 49 is provided, and the hanging mouth 50 and the round brush 60 are stored,
The cover body 48 is adapted to be locked by a locking piece 52.
Further, a display window 54 of an indicator 53 showing the suction capacity is arranged on the front side of the component storage section 49. Then, behind the display window 54, for example, display light emitting diodes 55, 56, 57, 58 are provided to form a level meter 59. Further, a bumper 64 is held on the peripheral surface of the main body case 43 by the main body case members 54 and 55.

The inside of the main body case 43 is divided into front and rear by a partition wall 66 having a communication port 65 formed in a substantially central portion thereof, and an electric blower is provided in a space portion behind the partition wall 66.
67 is provided and is protected and fixed by an elastic member 68. Furthermore, a circuit board 69 is provided above the electric blower 67, and a communication pipe 71 is provided between the circuit board 69 and the air passage 70 on the negative pressure side on the front side of the electric blower 67. A space part in front of the partition wall 66 serves as a dust collecting part 72 having the opening 42 on the upper surface and located on the negative pressure side of the electric blower 67. Further, an exhaust port 73 communicating with the pressure-increasing side of the electric blower 67 is formed on the rear surface of the main body case 43. Further, a cord reel located inside the main body case 52 and located behind the electric blower 67 for winding and storing a power cord 74.
75 is rotatably provided. The cord reel 75 winds the power cord 74 by pressing the cord reel button 77 protruding from the button opening 76 of the cover body 57. Further, a pair of wheels 78 and a turning wheel 79 are rotatably provided on the lower side of the main body case 43 on the rear side of both side surfaces and the front side of the lower surface thereof.

The lid 44 is formed in a thin box shape having an open lower surface, and a body clamp 81 urged by a spring 80 is pivotally attached to a front end portion of the lid 44. Then, the main body clamp 81 is disengageably engaged with a locking portion 82 formed at the upper end of the front surface of the main body case 43, and the lid body 44 is held in the closed state. Also, the lid 44 and the main body case 43
A handle 83 is rotatably housed near the joint with the.

The front side of the upper surface of the lid 44 is formed as an inclined surface 84 that descends toward the front, and a circular opening 85 is formed in this inclined surface 84. An inner wall 86 is joined and fixed to the lower surface side of the lid body 44 substantially parallel to the upper surface of the lid body 44, and a substantially cylindrical support body 87 is provided between the inclined surface 84 and the inner wall 86. Is fixed.

Reference numeral 88 denotes a rotating body, which is located between the inclined surface 84 and the inner wall 86 and is rotatably supported by the supporting body 87. Further, on the bottom surface of the rotating body 88, for example, a pair of high-voltage terminal rings 89 for supplying electric power to the brush motor are fixed.
These high-voltage terminal rings 89 are slidably contacted with a pair of contacts 90 fixed to the inner wall 86. On the other hand, on the outer peripheral surface of the rotating body 88, a pair of low-voltage terminal rings 91 are fixed side by side in the axial direction,
These low-voltage terminal rings 91 are slidably controlled by a pair of contacts fixed to the support 87 or the like.

Further, a lid 94 which is opened by inserting the main body connecting portion 93 of the hose portion 92 is pivotally attached to the rotating body 88. Further, a flexible sliding cover body 95 for opening and closing the opening 85 is provided between the inclined surface 84 of the lid body 44 and the rotating body 88 so as to be slidably accommodated.

The hose portion 92 is attachable to and detachable from the electric vacuum cleaner main body 41, and the base end of the flexible hose main body 96 having a power supply line and a two-wire transmission line is attached to the main body connecting portion 93. When the hose portion 92 is connected, the power supply line is electrically connected to the pair of high voltage terminal rings 89, and the transmission line is electrically connected to the pair of low voltage terminal rings 91.

Further, at the tip of the hose body 96, a grip pipe 98 to which an extendable extension pipe 97 is inserted and detachably connected is provided, and a hand operation unit 99 is provided at the grip pipe 98. And
As shown in FIG. 6 and FIG. 7, a circuit board 101 of the hand permission control means 100 is provided in the hand permission operating portion 99, and the hand permission operating portion 99 has a cover pipe 102 connected to the hose body 96 and a grip pipe. It is provided in the connecting pipe 103 between 98 and this connecting pipe 1
A display plate 104 is attached to 03. Then, in the vicinity of the display of, for example, “strong” on the display board 104, the electric blower 6
As an operation switch for varying the output of 7-circuit-a contact normally open contact (for example, a product name tact switch) 111, an operation button 112 for strong operation and an operation position of this operation button 112 are displayed, for example, from a light emitting diode. A display 113 is provided. Similarly, in the vicinity of the "automatic" display, the operation button 115 and the indicator 116 of the automatic normally open contact 114 are provided, and in the vicinity of the "weak" display, the normally open contact 1 for the sofa is provided.
17 operation buttons 118 and a display 119, and operation buttons 121 of the curtain normally open contact 120 are arranged in the vicinity of the display of "OFF". No display corresponding to the operation button 121 for cutting is provided.

Further, the connecting pipe 123 of the suction port body 122 having the built-in brush electric motor is detachably attached inside the extension pipe 97, and
The suction port body 122, the mouthpiece 59, and the round brush 60 can be selectively exchanged and used.

Next, a block diagram of the above embodiment will be described.

In FIG. 1, reference numeral 131 denotes a commercial AC power supply, which is connected to a control means 132, which is connected to an electric blower 67 to control the output of the electric blower 67.

This control means 132 uses a commercial AC power supply 131 for a step-down transformer 13
3 primary windings 134 connected, this transformer 133 secondary winding 1
A rectifying means 136 for rectifying an alternating current into a pulsating current is connected to 35,
The rectifying means 136 is connected with first and second constant voltage means 137, 138 for converting into constant voltages of different voltages. For example, the first constant voltage means 137 which supplies current to the hand permission control means 100 has a hand permission control means 1 when an abnormality occurs.
An opening / closing means 139 for opening / closing the power source of 00 is connected to the terminal A. A protection means 140 for protecting the hand permission control means 100 is connected between the terminals A and B, and a hand permission control means 1 from the terminal B.
The current detection means 141 for detecting the current from 00 is connected to the central processing unit 142 which is composed of a microcomputer. The first constant voltage means 137 is connected to a constant current means 143 that holds a constant current value, and the constant current means 143 detects the pressure or flow rate in the air passage 70 and the air passage detection means 144. It is connected to the detection means 146 which is composed of the conversion means 145 for converting the detection value of the wind path detection means 144 into an electric output. The detecting means 146 is connected to the central processing unit 142 via the amplifying means 147 which amplifies the output of the detecting means 146. The second constant current means 138 is directly connected to the central processing unit 142 for driving the central processing unit 142, and at the time of turning on the power again, the central processing unit 142.
It is connected to the central processing unit 142 via an initializing means 148 for initializing the progress of the program.

Further, the secondary winding 135 of the transformer 133 is connected to the commercial AC power supply 131.
A zero cross detecting means 149 for detecting zero volt and discriminating frequencies of 50 Hz and 60 Hz is connected, and the zero cross detecting means 149 is connected to the central processing unit 142. The first constant voltage means 137 is also connected via the current limiting means 150 to the display means 151 for displaying the output of the electric blower 67 or the operating position of the hand control means 100, which display means 151 is the central processing unit 142. Connected to. Further, a sound generating means 153 for notifying an abnormality such as clogging is connected from the central processing unit 142 via a sound generating driving means 152.

Then, the central processing unit 142 is connected to the output means 156 including the driving means 154 and the insulating means 155.
156 is connected to a power control unit 157 connected between the commercial AC power supply 131 and the electric blower 67.

Here, the central processing unit 142 will be described.

The zero-cross detecting means 149 is via the zero-cross input means 161, and the initializing means 148 is the initializing input means 1
The current detection means 141 and the amplification means 17 are connected via 62 to the input switching means 163 that alternately switches the inputs from the current detection means 141 and the amplification means 147, and via the A / D conversion means 164 for digitization. And is connected to the data carrying means 165 for reading and reading the respective data. The display means 151 is a display opening / closing means 166 for turning on / off the display.
It is connected to the. Further, the data transfer means 165 is connected to a storage means 173 composed of a data storage means 171 and a temporary storage means 172, and this storage means 173 is connected to the current detection means 14.
The data to be converted and stored into the output corresponding to the suction force set for the output of 1 and the output of the conversion means 145 is stored. Further, the data transfer means 165 has an input switching means 163.
And the arithmetic processing means 174 for calculating the output from the storage means 173 to the set suction capacity is connected. Further, from the data transfer means 165, a display output means 175 which is connected to the display opening / closing means 166 and operates the display opening / closing means 166, a sound output means 176 which is connected to the sound output driving means 152 and operates the sound output driving means 152, is driven. Output means 177, which are connected to the means 154 and actuate the drive means 154, are respectively connected.

Next, the permission control means 100 will be described with reference to FIG.

In FIG. 2, terminals A and B of the hand control means 100 are connected to the control means 132 of the vacuum cleaner body, respectively. A protection means 181 for protecting the hand permission control means 100 from a surge or the like is connected between the terminals A and B of the hand permission control means 100.

182 is an opening / closing means.
3. Opening / closing means 184 for automatic operation, opening / closing means 185 for weakness and opening / closing means 186 for cutting, and these opening / closing means 183, 184, 18
5,186 are respectively connected to the heavy load means 188, the automatic load means 189, the weak load means 190 and the off load means 191 of the load means 187 for setting the load resistance. The load means 188, 189, 190, 191 are respectively connected to the terminal A, and the amplification means 193, the automatic amplification means 194, and the weak amplification means 193 of the amplification means 192 for amplifying the output of the load resistance value of the load means 188, 189, 190, 191 are amplified. The means 195 and the cut-off amplification means 196 are connected to each other, and the cut-off amplification means 196 is connected to reset means 197 for resetting to off when the power is disconnected. And each amplification means 193, 194, 1
Reference numeral 95, 196 denotes an abusive storage means 20 which is a storage means of the storage means 201 for storing the operation contents of the opening / closing means 183, 184, 185, 186.
2, automatic storage means 203, weak storage means 204, is connected to a mutual reset means 206 for mutually setting and resetting the storage contents of the off storage means 205, the mutual reset means 206 respectively storage means 202,203,204,205. Connected to each of these storage means 202, 203, 204, 205 is a power supply backup means 207 for protecting the stored contents of the storage means 202, 203, 204, 205 from short-term power supply opening.

Then, each of the storage means 202, 203, 204 is connected to the strong display means 212, the automatic display means 213 and the weak display means 214 of the display means 211 for displaying the operated contents, and the current value to the control means 132. Is connected to the strong current changing means 216, the automatic current changing means 217, and the weak current changing means 218 of the current changing means 215, and is connected to the terminal B of the hand control means 100. The display means 211 and the current varying means 216 are not connected to the storage means 205 for cutting.

Next, a specific circuit of the above embodiment will be described with reference to FIGS. 8 and 9.

Via the fuse 221 to the commercial AC power supply 131, the triac 2 which is the bidirectional control element of the power control means 157 of the control means 132.
22 and the electric blower 67 are connected in series, and the triac 222 is connected to a snubber circuit 225 for protecting the triac 222, which is composed of a resistor 223 and a capacitor 225.
In addition, the electric blower 67 has a fuse and a fuse.
A noise prevention circuit 2 for preventing noise, which is composed of capacitors 226, 227, 228 Δ-connected to both ends of a commercial AC power supply 131 via 221.
29 is connected.

A primary winding 134 of a transformer 133 is connected to a commercial AC power supply 131 via a fuse 221, and a protective fuse 231 and a varistor 232 connected in series in parallel to the primary winding 134.
Are connected. A diode bridge 239 composed of diodes 235, 236, 237, 238 as a rectifying means 136 is connected to the secondary winding 135, and a DC output side of the diode bridge 239 is connected to the first constant voltage means 137, for example, a 3V for a constant voltage of 12V. The terminal regulator 241 is connected. The smoothing electrolytic capacitor 242 and the capacitor 243 connected in parallel are connected between one end of the three-terminal regulator 241 and the negative electrode of the diode bridge 239, and the other end of the three-terminal regulator 241 and the diode bridge 239 are connected. An electrolytic capacitor 244 and a capacitor 245 are connected between the negative electrode and the negative electrode, respectively. Further, the DC output side of the diode bridge 239 is connected to a three-terminal regulator 246 for the constant voltage of, for example, 5V of the second constant voltage means 138, and between one end of the three-terminal regulator 246 and the negative electrode of the diode bridge 239. Is connected to a capacitor 247, and a smoothing electrolytic capacitor 248 and a capacitor 249 are connected between the other end of the three-terminal regulator 246 and the negative electrode of the diode 239. Opening / closing means 1 on the positive output side of the diode bridge 239
NPN with bias resistor 251 between 39 emitter and base
-Type transistor 252 is connected to the collector, the base of the transistor 252 is connected to an NPN-type transistor 254 having a bias resistor 253 between the emitter and the base, and the emitter of the transistor 254 is connected to the negative side of the diode bridge 239. Has been done. Also, the base of transistor 252 and the collector of transistor 254 are resistors.
Transistor 25 to 3-terminal regulator 255 via 255
The base of 4 is connected to the central processing unit 142 via a resistor 256. Further, a smoothing electrolytic capacitor 257 and a capacitor 258 are connected in parallel between the emitter of the transistor 252 and the emitter of the transistor 254. The negative electrode of the diode bridge 239 is connected to the terminal A via the varistor 261 and the capacitor 262 connected in parallel to the protection means 140, and is connected to the terminal B via the varistor 263 and the capacitor 264 connected in parallel. ing. A resistor 141 as a current detecting means is connected between the terminal B and the negative electrode of the diode bridge 239, and a resistor 265 is connected between the terminal B and the central processing unit 142.

An electrolytic capacitor 271 for smoothing is connected between the three-terminal regulator 241 and the diode bridge 239. The three-terminal regulator 241 is connected to the inverting input terminal of the operational amplifier 143 as a constant current power source, and the forward input terminal is connected to the resistor 272. Further, between the output terminal of the operational amplifier 143 and the resistor 272, a semiconductor such as silicon as the detecting means 146 is diffused and the resistors 273 and 27 are equivalently formed.
It forms a resistive bridge consisting of 4,275,276. A variable resistor 277 serving as an offset gain for gain adjustment is connected between the resistors 273 and 274, and a slider of the variable resistor is connected via a resistor 278 to a normal input terminal of an operational amplifier 279 of the amplifying means 147. The connection point of the resistors 275 and 276 is connected to the inverting input terminal of the operational amplifier 279 via the resistor 280, and the resistor 281 is connected between the inverting input terminal and the output terminal. Further, the non-inverting input terminal of the operational amplifier 279 is connected to the resistor 283 connected from the inverting input terminal of the operational amplifier 143 to the output terminal of the operational amplifier 282 forming the voltage follower circuit. The output terminal of the operational amplifier 279 is connected to the inverting input terminal of the operational amplifier 285 via the resistor 284, and the non-inverting input terminal is connected to the output terminal of the operational amplifier 282 via the resistor 286. A resistor 287 is placed between the inverting input terminal and the output terminal of this operational amplifier 285.
Is connected to a semi-fixed resistor 288 for adjusting the amplification degree, the output terminal is connected to the central processing unit 142, and is connected to the negative electrode of the diode bridge 239 via the resistor 289.

Also, from the three-terminal regulator 241 to the initialization means 1
It is connected to the negative electrode of the diode bridge 239 through the resistor 291, the Zener diode 292 and the resistor 293 of 48.
NP is connected to the connection point of the cathode of Zener diode 292 and resistor 293.
The base of an N-type transistor 294 is connected, and the collector of this transistor 294 is connected via a resistor 295 to a three-terminal regulator 241 of the first constant voltage means 137.
The emitter of 4 is connected to the base of NPN transistor 296, the collector of this transistor 296 is connected to the positive pole of diode bridge 239 via central processing unit 142 and resistor 297, and the emitter of this transistor 296 is connected to the negative pole of diode bridge 239. Has been done. Further, light emitting diodes 302 and 303 connected in anti-parallel to the zero cross detection means 149 are connected to both ends of the secondary winding 135 of the transformer 133 via a resistor 301, and a phototransistor 304 is connected to these light emitting diodes 302 and 303 by a photocapacitor 304. It is ringed. The collector of the transistor 304 is connected to the three-terminal regulator 245 of the second constant voltage means 138, and the emitter of the transistor 304 is connected to the negative electrode of the diode bridge 239 via the central processing unit 142 and the resistor 305. One end of the resistor 150 as the current limiting means is connected to the three-terminal regulator 241, and the other end is connected to the display means 151 in parallel with the light emitting diodes 55, 56, 5
These light emitting diodes 55,5 connected to the anode of 7,58
The cathodes of 6,57,58 are connected to the central processing unit 142. One end of the resistor 311 of the sound generation driving means 152 has a central processing unit 14
Bias resistor 3 between the emitter and the base
12 is connected to the base of a transistor 313 having the emitter of this transistor 313 to the negative pole of the diode bridge 239 and the collector of this transistor 313 in parallel with the resistor 3
It is connected to the buzzer 316 of the sounding means 153 having 15 and is connected to the three-terminal regulator 241 of the first constant voltage means 137. Further, resistors 321 and 322 are connected in parallel between the central processing unit 142 and the negative electrode of the diode bridge 239, and a resistance is provided between the connection point between the central processing unit 142 and the resistance 321 and the connection point between the central processing unit 142 and the resistance 322. 323, a clock oscillator 324 of the central processing unit 142, and a resistor 325 are connected in series.
Further, a transistor 333 having a bias resistor 332 between the emitter and the base via the resistor 331 from the central processing unit 142.
The emitter of the transistor 333 is connected to the negative electrode of the diode bridge 239, and the collector of the transistor 333 is connected to the light emitting diode 334 of the insulating means 155 and the three-terminal regulator of the first constant voltage means 137 via the resistor 335. ing. Light-emitting diode 334 is a phototriac 3
The phototriac 336, which is photocoupled with 36 and electrically insulated, is connected to the gate of the triac 222 and the connection point of the triac 222 and the electric blower 67 via the resistor 337.

Next, a specific circuit of the hand permission control means 100 shown in FIG. 2 will be described with reference to FIG.

A capacitor 341 is connected between the terminals A and B, and a resistor 343, a Zener diode 344, and an electrolytic capacitor 345 that are connected in parallel as a protection unit 181 are connected via a backflow prevention diode 342. The anode of the backflow prevention diode 343 is further connected to the cathode of the diode 342, and the resistor 351 and the capacitor 352 of the power supply backup means 207 are connected in parallel between the cathode of the diode 343 and the terminal B. From the connection point of the cathode of the diode 342 and the anode of the diode 343, a resistor 356 and a light emitting diode 113 for heavy duty connected in series having a resistor 216 as a heavy duty current varying means in parallel, and an automatic current varying means for parallel. Resistor 3 in series with resistor 217 as
57 and a light emitting diode 116 for automatic use, a resistor 358 connected in series with a resistor 218 as a weak current varying means in parallel.
And the weak light-emitting diode 119 are connected to the integrated circuit 360 having the functions of the amplification means 192, the mutual reset means 206, and the storage means 201, respectively. No light emitting diode for cutting is provided. Also, the diode 34
From the cathode of 3, pull-up resistor as load means 187
188, 189, 190, 191 are connected, and the pull-up resistors 188, 189, 190, 191 are connected to the integrated circuit 360, and the pull-up resistor 188 for heavy use is the heavy-duty switch 183 as the open / close means for heavy-duty use, and the pull-up resistor 189 for automatic use is the open-close means for automatic use. Switch for automatic use 184, pull-up resistor for weak 190
Is connected to a weak switch 185 serving as a weak opening / closing means, and a cutting pull-up resistor 191 connected to a cutting switch 186 serving as a cutting opening / closing means. A capacitor 197 as a reset means is connected between the connection point of the switching switch 186 and the switching pull-up resistor 191 and the terminal B.

Next, the operation of the above embodiment will be described with reference to the flowcharts shown in FIGS.

First, when the power is turned on (step), the control means 13
The content of the central processing unit 142 is initialized by the second initialization means 148, the power of the hand permission control means 100 is temporarily turned off by the opening / closing means 139, and the content of the storage means 201 is reset by the reset means 197 of the hand permission control means 100 ( Step). When the AC power supply 131 shown in FIG. 13 has a phase angle of 0 ° or 180 °, the zero cross detection means 149 detects the voltage Zelvolt (step) (point a), and the output of the current detection means 141 is changed to the input switching means 163. It is output to the A / D conversion means 164 via (step), and the output current value is averaged and stored in the primary storage means 172 (step). It is judged whether or not this current value is a current value of a first predetermined value which is slightly lower than the current value when it is set to "strong" (step), and when the current value is the first predetermined value or more, a triac is set. The trigger time of 222 is set to a [ms] corresponding to “strong” output (step), and the current value is “weak” when the current is less than the first predetermined value.
It is judged whether the current value is slightly higher than the second predetermined value which is slightly higher than the current value when set to (step). If the current value is not higher than the second predetermined value, the current value when set to "weak" is used. If the current value is lower than a certain third predetermined value (step), the electric blower 67 is turned off (step), and if the current value is higher than the third predetermined value, the trigger time of the triac 222 is set to "weak". Set bms corresponding to the output (step). When the current value is the second predetermined value or more, the electric blower
It is judged whether or not 67 is within a predetermined time, for example, 2.0 [S] after starting (step), and if it is not within the predetermined time, the previous triac trigger time is read (step), and if it is within the predetermined time, it is detected. In order to prevent the operation from becoming unstable by operating according to the output of the wind path detecting means 144 of the means 146, the triac trigger time which is a constant output signal is set to C [ms]. Then, the output unit 177 outputs the trigger at the set triac trigger time (step) (period b). afterwards
The output data from the airway detecting means 144 read by the A / D converting means 164 is read (step (section C), and the average value (SENAV) of the output voltage from the airway detecting means 144 is set (step)). Then, the average value (SENAV) is compared with the data (SENDA1) in the data storage means 171 and the arithmetic processing means 174 performs arithmetic processing (period d), that is, data (SEN).
When the average value (SENAV) is smaller than DA1) (step), the triac trigger time is set to d [ms] (step), and the average value (SENAV) is more than data (SENDA1) (step) and less than data (SENDA2) If so (step), the triac trigger time is set to e [ms] (step). Similarly, the average value (SENAV) is the data (SENV).
DA2) or more (step) and less than data (SENDA3) (step), set the triac trigger time to f [m
s] (step), and the average value (SENAV) is the data (SE
When NDA3) or more (step) and less than data (SENDA4) (step), set the traac trigger time to g [m
s] (step), data (SENDA4) or more (step), when data (SENDA5) is less than (step), triac trigger time is h [ms] (step), data (SENDA5) or more (step) data When it is less than (SENDA6) (step), the triac trigger time is set to i [ms] (step). When the data (SENDA6) or more (step) and less than the data (SENDA7) (step), the triac trigger time is j. [Ms] (step), data (SENDA7) or more (step), when data (SENDA8) is less than (step), triac trigger time is k [ms] (step), data (SENDA8) or more (step) , If it is less than the data (SENDA9) (step),
Set the triac trigger time to 1 [ms] (step), and if the average value (SENAV) is more than the data (SENDA9) (step), set the triac trigger time to m [m
s] (step). Thus, ten triac trigger times are set, and any one of these triac trigger times is stored in the temporary storage means 172 (step). That is, after the triac trigger,
The data is taken out from the A / D conversion means 164 (period C) and the triac trigger time is arithmetically processed by the arithmetic processing means 174 (period D) (period E).

Specifically, the voltage of the commercial AC power supply 131 is stepped down by the transformer 133 and rectified by the rectification means 136, then made constant by the first constant voltage means 137 and output to the hand permission control means 100 via the transmission line.

Then, for example, when the output of the electric blower 67 is set to "strong", the operation button 112 for high power is pressed, the opening / closing means 183 for heavy power is operated, and the load means 188 for heavy power is operated, and the amplification means 193 for strong power is used. After the amplification, the mutual storage means 206 resets the previous memory and stores it in the overuse memory means 202.

In the heavy-duty storage means 202, the heavy-duty display means 212 is activated to light up the heavy-duty indicator 113, and the heavy-duty current varying means 216 is activated. Then, again via the transmission line, the control means 132
Then, the control means 132 inputs the current from the current detection means 141 to the central processing unit 142 to detect that it is strong, and stores it in the data storage means 171. Output means 177 with "strong" data
Then, the power control means 157 outputs “strong” electric power from the driving means 154 to the electric blower 67 via the insulating means 155 to strongly drive the electric blower 67. At this time, the level meter 59 of the vacuum cleaner main body 41 is, for example, the light emitting diodes 55, 56,
57 and 58 are all lit to indicate that they are “strong”.

Also, when the weak operation button 118 is pressed, the electric blower 67 outputs a weak output by the same operation, the weak display 119 of the manual operation unit 99 lights up, and the level of the electric vacuum cleaner body 41 is increased. The meter 59 indicates “weak”.

A case where the output of the electric blower 67 is automatically set will be described.

When the automatic operation button 115 is pressed to make it automatic, the automatic display 116 of the automatic display means 213 lights up, the automatic current varying means 217 is operated, and the electric vacuum cleaner body 41 is transmitted through the transmission path.
Is transmitted to the control means 132. Then, the electric blower 67 is driven according to the pressure or flow rate of the air passage 70. At this time, the light emitting diodes 55, 56, 57, 58 of the display means 151
Blinks according to the output of the electric blower 67.

Further, when the transmission line is cut off for a short time, the power supply backup means 207 holds the storage of the storage means 201, and after the backup is completed, the reset means 197 resets the storage and sets it to off.

According to the above-described embodiment, the trigger can be performed by the central processing unit 142 composed of a microcomputer, and the fine control can be made inexpensive.

〔The invention's effect〕

According to the present invention, when operating according to the output of the detection means, the output means drives the electric blower with a constant output signal during the time until the operation of the detection means rises after the power is turned on. Thus, even when controlling the output of the electric blower, the operation can be stabilized from the beginning of movement.

[Brief description of drawings]

FIG. 1 is a block diagram showing a vacuum cleaner main body of an embodiment of the present invention, FIG. 2 is a block diagram showing a hand operation unit of the same, FIG. 3 is a block diagram showing a central processing unit of the same, and FIG. 5 is a perspective view showing the same electric vacuum cleaner main body, FIG. 5 is a vertical sectional view of the same as above, FIG. 6 is a plan view showing the hand operation part of the same above, FIG. 7 is a vertical sectional view of the same above, and FIG. Fig. 9 is a circuit diagram showing the hand operation unit of the same as above. Fig. 10 to Fig. 12 are flow charts. Fig. 13 is a timing chart of the same as above. Fig. 14 is a perspective view of the same vacuum cleaner body. FIG. 15 is a block diagram showing a conventional example. 41 …… Vacuum cleaner body, 67 …… Electric blower, 70 …… Air passage, 72 …… Dust collection part, 92 …… Hose part, 96 …… Hose body, 100 …… Hand control means, 132 …… Control Means, 141 ……
Resistance as current detecting means, 144 ... Wind path detecting means, 145
...... Conversion means, 146 ...... Detection means, 173 ...... Storage means, 17
4 ... Arithmetic processing means.

Claims (1)

[Claims] 1. A vacuum cleaner body having a dust collector, an electric blower, a detection means for detecting the suction capacity of the electric blower, and a control means for controlling the output of the electric blower, and the vacuum cleaner. A hose portion that is detachably connected to the main body, wherein the detection means detects the pressure or the flow rate in the air passage of the electric blower, and the output of the air passage detection means is electrically output. And a hose body having a hand control unit for controlling the electric blower, and a hose body including a transmission line connecting the hand control unit and the electric vacuum cleaner body, The control means includes a current detection means for detecting an output from the permission control means, a storage means for converting and storing an output corresponding to a suction force set for the output of the detection means, and the storage means. Set the output of And an output means for controlling the electric blower according to the output of the calculation processing means, and the electric blower operates according to the output of the detection means. At this time, in the time until the operation of the detection means rises after the power is turned on, the output means drives the electric blower with a constant output signal within the control range.