JPS6352690A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To eliminate an electrical stepping in the resistance value at the start of a motor to secure a sure start, by connecting a correction resistance always to a resistance pattern. CONSTITUTION:A first slider 58 and a second slider 63 are permitted to slide and move from the start of non-contact. By the first slider 58, a resistance pattern 56 is connected to a first conductive pattern 57 to be short-circuited, and by the second slider 63, a second conductive pattern 61 is connected to a third conductive pattern 62 to be short-circuited. In this case, when the second conductive pattern 61 and the third conductive pattern 62 are permitted to come in contact with each other by the second slider 63 before the resistance pattern 56 and the first conductive pattern 57 are permitted to come in contact with each other by the first slider 58, then the patterns come in contact with a correction resistance 60 connected to the resistance pattern 56 always in parallel with each other, via the resistance pattern 56 through the second conductive pattern 61. Accordingly, a device starts certainly after it comes in contact with the resistance pattern 56 without being connected to the correction resistance only, thereby an electrical stepping is not generated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a vacuum cleaner, and particularly to input control of an electric dust suction FG1 machine built into a vacuum cleaner body.

(Prior art) In conventional vacuum cleaners of this type, for example,
Control of an electric blower as described in Publication No. 32653 I! The device is known. This conventional control m+ device connects an electric blower and a bidirectional control element in series with a power supply, and connects a charging circuit and a trigger circuit having a trigger element to the bidirectional control 7II element. The charging circuit is composed of a charging power source, a charging capacitor, a charging resistor, etc. The charging resistor is a variable resistor, and the resistance value can be changed by disposing a switch such as a slider on the hand control unit or the vacuum cleaner body. let By changing the resistance value in this way, changing the charging time of the charging capacitor, and changing the trigger time (Q phase control is performed to control the input power to the electric transmission machine, the output of the electric transmission machine can be controlled A changing configuration is adopted.

However, since variable resistors have an error of around 20% of the total resistance value due to good production, a fixed resistor for correction is connected in parallel to the variable resistor, and the variable resistor part is replaced with a fixed resistor with a relatively low resistance value and low tolerance. By combining the variable resistor and the fixed resistor through a parallel circuit with the variable resistor and the variable resistor, the error can be reduced to
I try to keep it around 3% of 177th place.

(Problems to be Solved by the Invention) However, the electric transmission I! In the configuration of one control equipment, as shown in FIGS. 9 and 10, the end of the resistor pattern 1 in the direction in which the resistance value of the resistor pattern 1 increases, and the second end connected to the fixed resistor for correction. The ends of the RTa patterns 2 are located at approximately the same length. For this reason, electricity 4.71hf,
When Il is changed from OFF to weak operation, the resistance value becomes variable resistance due to mechanical errors in the first slider 3 and second slider 4, and pattern deviations in the resistance pattern 1 and the second conductive pattern 2. A correction fixed resistor of about 1710 contacts the second conductive pattern 2 and the third conductive pattern 6 with the slider 4 before the resistor pattern 1 and the first conductive pattern 5 come into contact with the slider 3. In this case, the resistance value at the lowest input is lower than when the variable resistor and the correction fixed resistor are connected in parallel, and the first slider 3 and the second slider are turned on. When the input of the vacuum cleaner is changed by sliding the mover 4, there is an electrical step in the resistance value, so the output of the vacuum cleaner also becomes a step, which is uncomfortable.

Furthermore, if driven only by the auxiliary resistor, the electric blower may not start, and in this case, if the operation position is left fixed, voltage will remain applied to the Ma blower, causing the electric blower to heat up. There is.

The present invention was made in view of the above problem, and the resistance value can be changed steplessly from the minimum input input without being turned on due to the minimum design input being lowered, and the electric h ) intended to provide weight relief.

[Structure of the invention]

(Means for Solving the Problems) The vacuum cleaner of the present invention connects an electric transmission J[ and a bidirectional thyristor in series to an AC power source, and connects the gate of the bidirectional thyristor to a gate trigger circuit. The gate trigger circuit has a charging circuit and a trigger element, the charging circuit has a charging power source, a charging capacitor, and a variable resistance section for varying the charging period, and the variable resistance section includes a variable resistor and a variable resistance section for changing the charging period. The variable resistor has a correction resistor connected in parallel with the resistor, and the variable resistor includes a resistor pattern, a first conductive pattern for taking out the resistance output of the resistor pattern, and a correction resistor in the direction of increasing the resistance value of the resistor pattern. a second conductive pattern to which a resistor is connected and also connected to the resistor pattern; and a third conductive pattern for taking out the output of the second conductive pattern.
A first slider slidingly connects the conductive pattern, the resistor pattern and the first conductive pattern, connects and slides the second conductive pattern and the third 4 m pattern, and slides the resistor pattern and the first conductive pattern. It is equipped with a first sliding cutter and a second sliding cutter that responds.

(Function) The vacuum cleaner of the present invention has a resistance pattern that is a variable resistance of a variable resistance section and a second
The first slider is brought into contact with the conductive pattern, and the second conductive pattern is connected to a correction resistor connected in parallel to the variable resistor.
By bringing the second slider into contact with the conductive pattern of Slide off the slider No. 2. In this way, the resistance value of the variable resistor section is varied, the charging cycle is changed, the charging capacitor is charged, and the trigger element is activated to trigger the gate of the bidirectional thyristor and control the phase of the bidirectional thyristor. Reduce the error! i Control the output of the dynamic fan.

Furthermore, even if the second slider contacts the second conductive pattern and the third conductive pattern before the first slider contacts the resistance pattern and the first conductive pattern, the second Since the current flows from the conductive pattern through the resistive pattern, it is not connected only to the correction resistor, but always contacts the resistive pattern before starting.

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

In Fig. 4, reference numeral 11 denotes a vacuum cleaner-like main body, in which an electric blower 12, a bidirectional thyristor triac 13, a gate trigger circuit 14, etc. are built-in.
A dust collection case 15 forming a dust collection section in which a dust collection filter is removably mounted is removably attached to the front part. The front part of this dust collection case 15 contains a gate trigger circuit 14 of the electric cleaning main body 11 and a manual control operation part 16.
A suction port 18 is opened to which a suction hose 17 having a transmission path consisting of 24 wires and two reinforcing wires is detachably inserted and connected, and a connector is provided adjacent to this suction port 18. There is.

A connecting tube portion 20 is provided at the base end of the boss 17 and is connected to the suction port 18 by insertion, and this connecting tube portion 20 has an insertion plug 2 that is electrically connected to the connector 19.
A grip tube 23 is provided at the tip of the hose 17 to which an extension tube 22 etc. can be inserted and connected in a removable manner, and this grip tube 23 is provided with a manual control operation section 1G. In addition, a suction port body 2 is provided at the tip of the extension pipe 22.
5 is detachably provided.

As shown in FIGS. 5 to 7, a handle is provided on the handle 24 of the grip tube 23 at the tip of the hose 17. If
The il operation section 16 is provided with a cursor 31 for turning on/off and setting cleaning surface conditions. The output is performed by changing the resistance value of the variable resistor section 32 regarding the on/off operation of the cursor 31 and the selection setting of the cleaning surface condition.

The variable resistance section 32 is connected to the suction port 18 of the vacuum cleaner main body 11 via a conductive wire disposed on the hose 17 by an insertion plug 21 connected to a connector 19 installed adjacent to the suction port 18 of the vacuum cleaner main body 11. The resistance value of the variable resistance section 32 is off when it is open, and the larger the resistance value is, the lighter the load is.
Sofa - 1 floor / Tatami range, and conversely, the smaller the resistance value, the more load is required. The resistance value is set by aligning the cursor 31 of the manual control operation unit 16 with the display 34 of the display board 33.

The circuit diagram of the above embodiment has the configuration shown in FIG.

A triac 13 as a bidirectional thyristor having a snubber circuit 40 for preventing false ignition and absorbing surges consisting of a capacitor +J 38 and a resistor 39 and an electric blower 12 are connected in series to a commercial AC power supply 3G via a fuse 37. ing. Further, from this electric blower 12, a fuse 3
A noise prevention capacitor, $1.42.43, is connected to both ends of the AC power supply 36 including the AC power supply 36. Further, at both ends of the power supply 36 including the fuse 37, for example,
The primary winding of a step-down transformer 44 that steps down the voltage to about 20V is connected, and the secondary winding is a diode 45.4G, 47.
It is connected to the input terminal of a diode bridge 49 for high frequency rectification consisting of 48.

A resistor 5 is connected to the positive output side terminal of this diode bridge 49.
0 is connected, and a Zener diode 51 whose rectified waveform is a rectangular wave is connected between this resistor 50 and the negative output side terminal of the diode bridge 49 to constitute a charging power source 52.

A resistance pattern 56 and a first conductive pattern 57 are connected from the connection point between the resistor 50 and the Zener diode 51 via the connector 19 and the plug 21, and the transmission line inside the hose 17.
, these resistance patterns 5G and first conductive patterns 57
A variable resistor 59 consisting of a first slider 58 in sliding contact with
+1i D', the resistor 60 is connected to the second conductive pattern 61, and the second conductive pattern 61 and the third conductive pattern 62 are in active contact. However, it is connected via a second slider 63 that responds to the eleven sliders 58. Further, the end of the resistance pattern 56 where the resistance value becomes high is connected to one end of the second conductive pattern 61, and the first conductive pattern 57 and the third conductive pattern 62 are connected at one end. The variable resistance section 32 is composed of the variable resistance 59, the correction resistance 60, and the like.

Further, the above configuration is represented by an equivalent circuit shown in FIG. 3, in which the correction resistor 60 is always connected in parallel with the resistor pattern 56,
The second conductive pattern 61 and the third conductive pattern 62 act as a switch 73 by contacting the second slider 63 .

One end of the first conductive pattern 57 and the third conductive pattern 62 is connected to a resistor 64 via the transmission line of the hose 17, the plug 21, and the connector 19, and the resistor 64 and the diode bridge 49
A charging capacitor 65 is connected between the negative output side of the . A charging circuit 66 is constituted by the charging power source 52, the variable resistance section 32, the charging capacitor 65, and the like.

A resistor 07 and a resistor 68, which are connected in series and determine the trigger voltage, are connected in parallel with the Zener diode 51, and from the connection point of these resistors 67 and 68, the gate of a PUT 69 as a trigger element is connected to the anode of this PUT 69. is connected to the connection point between the resistor 64 and the capacitor 65, its cathode is connected to one end of the primary winding of a pulse transformer 70, and the other end of this pulse transformer 70 is connected to the negative output side of the diode bridge 49. Further, a resistor 71 and a diode 72 are connected to one end of the secondary winding of the pulse transformer 70 to control the output from the pulse transformer 70 and prevent malfunctions and overcurrents, and are connected to the gate of the triac 13. The other end is connected to the power source 3G via a fuse 37. In addition, PUT 69 as a trigger element and charging circuit 6
6 and the like constitute the gate trigger circuit 14.

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

When cleaning by grasping the grip tube 23 of the hose 17 connected to the cleaning main body 11, it is possible to
Depending on the type of Tatami, sofa, curtain, etc.
When the cursor 31 of the iIl operation section 1G is moved in the longitudinal direction of the hand operation section 24, the first
The slider 58 and the second slider 63 move, and the first slider 58 slides on the resistance pattern 56, so that the resistance value of the variable resistor 59 changes, and the charging capacitor 6
5 is also changed, and the gate i of PUT69 is changed.
~The output of the electric feeder 12 is controlled by changing the trigger control angle and changing the operating time of the triac 13.

When the cursor 31 is displayed as OFF, that is, when the first slider 58 and the second slider 63 are not in contact with each other, when the first slider 58 and the second slider 63 are moved, the first 1ff
l i) The J connector 58 contacts and short-circuits the resistive pattern 56 and the first conductive pattern 57, and the second resistor also contacts and short-circuits the second conductive pattern 61 and the third conductive pattern 62, and further VI to cursor 31! When n is turned on, it turns on and charges the charging capacitor 65.

Further, the first slider 58 contacts the resistive pattern 56 and the first conductive pattern 57 with the second slider 6.
3 is a second conductive pattern 61 and a third conductive pattern 62
Even if the second conductive pattern 61 contacts the correction resistor 60, which is always connected in parallel to the resistance pattern 56, the second conductive pattern 61 contacts the correction resistor 60, which is always connected in parallel to the resistance pattern 56. Since it starts after contacting the pattern 56, no electrical step occurs.

On the other hand, if only the first slider 58 makes contact, the total resistance value of the resistance pattern 5G is added, and the resistance value becomes much higher than the resistance value when the correction resistor 60 is connected in parallel, so the charging capacitor 65 is not charged and electric fan 1j132
is not turned on.

When the switch is turned on as described above, the AC power supply 36 is converted to voltage by the transformer 44, then full-wave rectified by the diode bridge 49, converted into a square wave by the Zener diode 51, and regulated to a constant voltage. The charging cycle is controlled by a charging circuit 66 including an auxiliary resistor 60 and a resistor 64, and a charging capacitor 65 is charged. When the voltage across this capacitor 65 reaches the reference voltage set by resistors 67 and 68, P U'T 69 turns on +'+'b, and capacitor 6
A charge of 5 is transferred from the anode side electric field of PtJTG9 to the cathode side electrode, and from the cathode side electrode of this PIJT69 via the pulse transformer 70 to the triac 13.
A trigger current flows through the gate of the triac 13, and the triac 13 is turned on. When this triac 13 turns on,
The 7Ji flow flows through the triac 13 and controls the electric blower 12. When the cursor 31 is moved to the jutan side, the resistance values of the five variable resistors become lower and the charging capacitor 65
The charging cycle becomes shorter, the number of triggers increases, and the output of the electric reverse puller 12 increases.

FIG. 8 is a comparison diagram of a case where only the conventional variable resistor 59 is used and a case where an auxiliary resistor 60 is connected in parallel with the variable resistor 59.

The resistance value is 14.7 (KO3) for the combined resistor and 210 (KO3) for the variable resistor only, and the combined resistor is about 1/15 of the value for the variable resistor only.

Also, regarding the error, if only variable resistor is used, Δ is approximately 20%.
On the other hand, in the case of composite resistance, B has a fairly low value of 5% and is stable.

According to the above embodiment, the second conductive pattern 61 connected to the correction resistor 60 has the second r1! Even if the mover 63 contacts, the correction resistor 60 is always connected in parallel with the resistance pattern 56, and the connection to the correction resistor 60 is not made by one mover 58.63, so when the electric blower t112 is controlled 'dl1 There is no electrical step in the resistance value from the minimum input, and stable control is possible, and the electric blower 12 is not driven below the minimum input value of the design value, and the electric blower 12 is reliably activated.

Furthermore, by simply changing the connection of the correction resistor 60 without changing the resistance pattern 56, the output of the electric blower 12 can be controlled without electrical steps.

〔Effect of the invention〕

According to the vacuum cleaner of the present invention, since the correction resistor is always connected to the resistance pattern, there is no electrical step in the resistance value when controlling the start of the electric blower n, so that the vacuum cleaner can be stably υIII! If possible, and the electric blower is not driven below the minimum input value of the printing setting value, and the electric blower is reliably activated.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram of an electric vacuum cleaner showing an embodiment of the present invention, Fig. 2 is an explanatory diagram of the position of the resistor pattern as described above, Fig. 3 is an explanatory diagram of the same as the variable resistor section as described above, and Fig. 4 is an overall perspective view of the same vacuum cleaner, FIG. 5 is a perspective view of the upper permission control operation section,
Figure 6 is a front view of the same as the above, Figure 7 is a side view of the same as the above, Figure 8 is a comparison diagram of the variable resistance value and the combined resistance value of the same as the above, and Figure 9 is the position and resistance value of the resistance pattern of the conventional electric shock rejection. Relationship diagram, 1st
FIG. 0 is an explanatory diagram of the variable resistance section same as above. 12. Electric blowing method, 13. Triac as bidirectional thyristor, 14. Gate trigger circuit, 32.
・Variable resistance section, 36... AC power supply, 52... Charging power supply,
56...Resistance pattern, 57...First conductive pattern,
58...first 12! Mover, 59... Variable resistance, 60...
- Correction resistor, 61... Second conductive pattern, 62... Third conductive pattern, 63... Second slider, 65... Charging capacitor, 66... Charging circuit. Doman

Claims (1)

[Claims] (1) An electric blower and a bidirectional thyristor are connected in series to an AC power source, the gate of the bidirectional thyristor is connected to a gate trigger circuit, and the gate trigger circuit has a charging circuit and a trigger element; The charging circuit includes a charging power source, a charging capacitor, and a variable resistance section for varying the charging cycle, and the variable resistance section includes a variable resistor and a correction resistor connected in parallel with the variable resistance. The resistor includes a resistor pattern, a first conductive pattern that takes out the resistance output of the resistor pattern, and a second conductive pattern connected to the resistor pattern and a correction resistor connected in the direction in which the resistance value of the resistor pattern increases.
a third conductive pattern that takes out the output of the second conductive pattern; a first slider that connects and slides the resistor pattern and the first conductive pattern; and a second conductive pattern. A vacuum cleaner comprising a second slider that connects and slides the pattern and the third conductive pattern and responds to the first slider.