JPH0137144B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a vacuum cleaner, and relates to a hand-held control operation unit of a hose connected to the vacuum cleaner body to rotate a dust suction electric blower built into the vacuum cleaner body. This invention relates to a control device that can be switched to manual or automatic control.

[Conventional technology]

Conventionally, this type of vacuum cleaner is equipped with an electric blower control section on the hand operation section on the tip side of the suction hose connected to the vacuum cleaner body, and the control section of the electric blower is arranged in a manner that corresponds to the control position of the operating body of the control section. A configuration has been adopted in which the electric blower is controlled by adjusting a control signal input to the main control section of the electric blower using a variable resistor.

As shown in FIG. 24, this conventional vacuum cleaner has a control device that controls this electric blower, and includes a bidirectional thyristor 2 connected in series with the electric blower 1, and a control circuit that controls this bidirectional thyristor 2. 3
This control circuit 3 has a main control section 4 that triggers the bidirectional thyristor 2, a charging control section 5, and a power supply circuit 6, and the charging control section 5 has a variable power supply circuit connected to a charging capacitor. It has a charging resistor circuit 8 provided with a resistor 7, and the control operating body of the control operating unit formed on the grip of the hose connected to the vacuum cleaner body can be used to clean a cleaning area, for example, a vacuum cleaner.
When moved according to the tatami, sofa, curtain, etc., the variable resistor 7 of the charging resistance circuit 8 of the charging control section 5
The resistance value of the capacitor is changed, the charging cycle of the capacitor is changed, the timing of the turn-on operation of the main control unit 4 is changed, the bidirectional thyristor 2 is turned on, and the input of the electric blower 1 is maintained until the voltage between its terminals decreases. The rotation of the electric blower 1 is adjusted and controlled.

As shown in FIGS. 25 to 27, a grip portion 11 at the end of the hose 10 is connected to the main body of the vacuum cleaner.
The resistance value of the variable resistor 7 provided in the control operation part 12 is changed by the sliding operation of the control operation body 13, and when the control operation body 13 is moved toward one end on the hose side, the resistance value of the variable resistance 7 changes. When the voltage increases, the time constant of the charging control section 5 becomes large, the trigger phase of the main control section 4 is delayed, the input of the electric blower 1 becomes low, and the switching section turns off the charging resistance circuit 8 at one end of the variable resistor 7. A non-patterned portion 15, which is 14, is formed.

Conventionally, for vacuum cleaners, a device has been proposed that detects the pressure or flow rate in the suction air path of the vacuum cleaner body and automatically controls the rotation of the electric blower 1, but this device does not have a manual control operation section. A configuration has been adopted in which a control operation section is provided at the end of the hose, an automatic control operation section is provided at the cleaner body, and switching between manual control and automatic control is performed on the cleaner body side.

[Problem that the invention seeks to solve]

Conventional vacuum cleaners have a manual control operation section on the end of the hose and an automatic control operation section on the vacuum cleaner body, so switching between manual control and automatic control must be done on the vacuum cleaner itself. Because it doesn't happen,
There was a problem with poor workability during switching operations.

The present invention was made in view of the above problems, and it is possible to perform manual control using the hand control unit of the hose connected to the vacuum cleaner body, and also to switch between automatic control and switch between manual control and manual control on the vacuum cleaner body. To provide a vacuum cleaner that does not require manual operation.

[Means for solving problems]

The vacuum cleaner of the present invention has a dust collecting section formed in the vacuum cleaner body, an electric blower built into the vacuum cleaner body, a control circuit for controlling the electric blower, and a pressure control circuit in the suction air path of the vacuum cleaner body. Alternatively, the vacuum cleaner body is provided with a detection body that operates according to the flow rate, and a converter that operates in conjunction with the detection body and converts the amount of displacement of the detection body into an output of an electric quantity, and is connected to the dust collecting section in the vacuum cleaner body. The control circuit has a hose connected to the electric blower and having a control operation part, and the control circuit identifies and sets a resistance value of a main control part that controls the rotation of the electric blower and a variable resistance part provided in the control operation part. and a remote control section that inputs the output of the converter to the main control circuit when the resistance value is within the range other than the set value, and inputs an input change corresponding to the change in the resistance value to the main control section when the resistance value is in a range other than the set value. , the control operation section is
The operating body has an operating body that changes the resistance value of the variable resistance section, and this operating body has an off position where the operation of the electric blower is stopped, a maximum resistance value position where the electric blower is operated at a low input, and a maximum resistance value position where the electric blower is operated at a low input, and from this low input operating position to a maximum input operation. The present invention is characterized in that it can be selectively set to a variable resistance value position where the resistance value is sequentially changed and a set resistance value position where the input of the electric blower is changed in accordance with the output of the converter.

[Effect]

In the vacuum cleaner of the present invention, when the operating body is operated by the control operating unit on the tip side of the hose connected to the vacuum cleaner body so as to communicate with the dust collection unit, and the operating body is moved from the off position, the resistance of the variable resistance unit is identify the value with the remote control,
When this resistance value is other than the set resistance value, the main control section is operated according to the resistance value to control the input of the electric blower, and when the resistance value of the variable resistance section is the set resistance value, the vacuum cleaner main body is controlled. The main control section is operated via the converter by the amount of displacement of the detection body which operates according to the pressure or flow rate of the suction air passage, and the input to the electric blower is controlled.

〔Example〕

Next, the configuration of an embodiment of the present invention will be explained with reference to FIGS. 1 to 3.

In FIG. 3, 20 is a vacuum cleaner main body, and the electric blower 21 shown in FIG.
A control circuit 22 for controlling the rotation of the vacuum cleaner body 20 is built-in, and a dust collection case 23 that forms a dust collection section in which a dust collection filter is removably attached is detachably attached to the front part of the cleaner body 20. . This dust collection case 2
A suction port 25 to which a suction hose 24 can be inserted and connected in a detachable manner is opened at the front of the housing 3 . A connecting pipe portion 26 is provided at the base end of the hose 24 and is connected to the suction port 25 by insertion, and a connector (not shown) provided adjacent to the suction port 25 is connected to the connecting pipe portion 26 for electrical connection. A plug 27 to be connected to the main body is provided. A hand-operated handle 28 is integrally provided at the tip of the hose 24 to which an extension tube or the like can be inserted and connected in a removable manner, and this grip 28 is provided with a control operation part 29 . An operating body 30 is slidably provided on the control operating section 29.

As shown in FIG. 1, the electric blower 21 and the bidirectional thyristor 32 are
The first anode side electrodes on the gate side are connected in series.

Next, the control circuit 22 has a main control section 33 and a remote control section 34 for triggering the bidirectional thyristor 32.

This main control section 33 controls the bidirectional thyristor 3.
The electric blower 2
1 is connected in parallel. That is, the main control section 33 is connected to a power supply circuit 35 of a full-wave rectifier circuit connected to the AC power supply 31. Further, the remote control section 34 connected to this power supply circuit 35 has a resistance value identification circuit 36 and a switching circuit 37, and this resistance value identification circuit 36 includes a safety resistor 3 as shown in FIG.
8, 39 to the control operating section 2 of the hose 24.
A variable resistance section 41 having a switch 40 function provided at 9 is connected. The resistance value identification circuit 36 identifies and outputs the resistance value of the variable resistance section 41, and detects the vicinity of the lowest resistance value of the variable resistance section 41 according to the pressure or flow rate of the suction air path of the vacuum cleaner main body 20. The variable resistance unit 41 determines whether the resistance value is the set resistance value for automatic control to operate.
When the voltage is input to the voltage comparator circuit 43 via the voltage amplification circuit 42, the voltage comparator circuit 43 discriminates the voltage, and if it is within the set resistance value range, the voltage comparator circuit 43 sends the switching circuit 37 to the set value range. The switching circuit 37 is operated to switch, and the control signal input to the main control section 33 is input to the variable resistance section 41.
The input according to the resistance change is switched to the input according to the pressure or flow rate of the suction air path of the cleaner main body 20. Further, when the resistance value of the variable resistance section 41 is higher than the set resistance value, the voltage comparison circuit 43 inputs a signal outside the set value range to the switching circuit 37, and this switching circuit 37 is operated to switch, and the main control section 33 The control signal input to is switched from the input corresponding to the pressure or flow rate of the suction air path of the cleaner main body 20 to the input corresponding to the resistance change of the variable resistance section 41. Further, when the resistance value of the variable resistance section 41 is lower than the set resistance value, the switching circuit 37 is opened and the output of the main control circuit is turned off. Note that this resistance value identification circuit 36 is connected to a power supply circuit 35 via a constant current circuit 44 such as a Zener diode.

Further, 45 is a detection object, which is the main body 20 of the vacuum cleaner.
The displacement of the detector 45 is input to the converter 46 and converted into an electrical output.

Then, the output of the converter 46 or the output corresponding to the input change of the variable resistance section 41 is input from the switching circuit 37 to the main control section 33, and the trigger phase of the bidirectional thyristor 32 is controlled.

Further, 47, 48, and 49 are noise prevention capacitors.

Next, as shown in FIG. 6, a variable resistance section 41 is formed with a variable resistance pattern of a printed low antibody on a circuit board 56 (FIGS. 4 and 5) provided in the control operation section 29 of the hose 24. , this variable resistance pattern continues from the non-patterned part 50 and the maximum resistance part of the low input through the variable resistance part 52 to the lowest resistance part 53 of the maximum input and the end of this lowest resistance part 53. A set resistance value section 54 having a lower resistance value than the resistance value section 53 is formed. A slider 55 that slides on this variable resistance pattern is connected to an operating body 30 that is slidably provided on the control operating section 29 of the tip grip section 28.

Further, as shown in FIGS. 7 and 8, display characters 57 for input to the electric blower 21 are formed along the movement range of the operating body 30 on the control operation section 29 of the hose 24, and the magnitude of the input is also displayed. A display figure 58 is formed.

Next, the operation of this embodiment will be explained.

When cleaning by gripping the grip part 28 of the hose 24 connected to the vacuum cleaner main body 20, the operating body 30 is moved in the longitudinal direction of the grip part 28 depending on the area to be cleaned, such as a rug, tatami mat, sofa, curtain, etc. When moved, the slider 55 comes into contact with the variable resistance pattern,
The resistance value of the variable resistance section 41 is changed, and the control circuit 2
The electric blower 2 input to the remote control circuit 34 of 2
1 is changed, and the rotation of the electric blower 21 is adjusted and controlled. Display characters 57 and display figures 5 formed on both sides of the movement position of the operating body 30
By checking the off position, variable resistance position, and set resistance position at step 8, the control state of the electric blower 21 can be checked and determined.

Then, when the slider 55 comes into contact with the variable resistance pattern from the OFF position of the non-patterned part 50 by operating the operating body 30 of the grip part 28 of the hose 24, the switch 40 is turned on, and the AC power supply 31 is fully supplied to the power supply circuit 35. The current that has been rectified and made constant by a constant current circuit 44 such as a Zener diode is passed through a safety resistor 38,
Variable resistance pattern of variable resistance section 41, safety resistor 3
9 to the resistance value identification circuit 36, the voltage is amplified by the voltage amplification circuit 42 of the resistance value identification circuit 36, and the voltage is input to the voltage comparison circuit 43. This voltage comparator circuit 43 changes the resistance value of the variable resistor 41 by inputting the output of the converter 46 to the main controller 33.The voltage comparison circuit 43 inputs the output of the converter 46 to the main controller 33. 33 and inputs the identification signal to the switching circuit 37. This switching circuit 37 switches the main control unit 33 when the resistance value identification circuit 36 determines that the resistance value is higher than the set resistance value at the variable resistance value position where the operating body 30 is located.
A DC output voltage corresponding to the resistance value of the variable resistance section 41 is input to the main control section 33, and the trigger phase is controlled by the main control section 33 with a time constant corresponding to the resistance value to control the phase of the bidirectional thyristor 32, thereby controlling the electric blower. 21 is rotated under control. Then, when the slider 55 is set to the position of the set resistance value by operating the operating body 30 of the hose 24, the resistance value identification circuit 36 identifies the resistance value, operates the switching circuit 37, and the main controller 33 The amount of displacement of the detection body 45 according to the pressure or flow rate of the air path of the vacuum cleaner main body 20 is converted into an amount of electricity by the converter 46 and inputted to the main control unit 33. The rotation of the electric blower 21 is automatically controlled in accordance with the rotation speed.

In the configuration of this embodiment, the operating body 30 changes from the off position to the minimum input position and the maximum input position, and the changing state is natural, and furthermore, an automatic control position can be set as necessary, and the vacuum cleaner is mainly operated by manual control. It is advantageous for

Next, the configurations of other embodiments are shown in drawings 9 to 11.
The diagram will be explained.

In the configuration of the embodiment described above, the variable resistance pattern of the circuit board 56 forming the variable resistance section 41 forms the OFF position of the non-patterned section 50a adjacent to the automatic control setting resistance value position. In this configuration, the off position is located at both ends, and the off position can be set to immediately stop the electric blower 21 from automatic control.
When the electric blower 21 is inadvertently sucked in while it is operating, when the floor brush becomes clogged, or when the floor brush sticks to the vinyl resin tile, the electric blower 21 can be immediately stopped.

Further, the configurations of other embodiments are shown in FIGS. 12 to 14.
The diagram will be explained.

The configuration of this embodiment is such that the variable resistance section 41 is in the OFF position, the automatic control set resistance value position formed by the conductive pattern section 54a, and the manual control from the low input maximum resistance value position to the maximum input minimum resistance value position. Arrange in the order of variable resistance value positions.

In the configuration of this embodiment, the electric blower 21 can be automatically stopped at one off position and the electric blower 21 can be immediately stopped under automatic control. When moving the floor brush with the floor brush lifted off the floor, the low input sides of the automatic control and manual control are adjacent to each other, so there is little difference between the low input of the automatic control and manual control, making it easy to switch to manual control. It is intuitively smooth and suitable for vacuum cleaners that switch from automatic control to manual control as necessary.

Further, the configurations of other embodiments are shown in drawings 15 to 1.
Figure 7 will be explained.

The configuration of this embodiment is as follows: the variable resistance section 41 is placed in the OFF position, the set resistance value position is set for automatic control, and the variable resistance value position is arranged in the order from the lowest resistance value position for maximum and lowest input to the maximum resistance value position for minimum input for manual control. Arrange in.

In the configuration of this embodiment, in a vacuum cleaner that mainly cleans carpet surfaces, etc., it is used on the maximum input side of the manual control, and the wooden floor surface is cleaned by automatic control with good running performance, and then the vacuum cleaner is used to clean the floor surface. There is little head difference when switching to manual when cleaning.

The configuration of another embodiment will be explained with reference to FIGS. 18 to 20. The variable resistance section 41 is moved from the set resistance value position for automatic control, the OFF position, and the maximum resistance value position for the minimum input for manual control to the minimum resistance value position for the maximum input. Arrange in the order of variable resistance value positions leading to resistance value positions.

In this configuration, the off position is centrally located and is suitable for vacuum cleaners that are frequently used with both automatic and manual control, allowing for even use, and especially the ability to immediately switch to the off position from the lowest input of automatic and manual control.

Further, the configuration of another embodiment will be explained with reference to FIGS. 21 to 23.

In this configuration, the variable resistance section 41 is placed in the OFF position, the variable resistance value position from the minimum resistance value position for manual control to the minimum resistance value position for maximum input, the OFF position, and the set resistance value position for automatic control. Arrange.

In this configuration, the separation between automatic control and manual control is clear, there is no risk of erroneous operation, and the manual control is located on the hose 24 side where it is easy to operate. The electric blower 21 can be immediately stopped when cleaning curtains or the like under automatic control.

〔Effect of the invention〕

According to the present invention, there is provided a control circuit that controls an electric blower, a detection body that operates according to the pressure or flow rate of the suction air path of the vacuum cleaner body, and a detection body that operates in conjunction with the detection body and detects the displacement of the detection body. a converter for converting into an output of electrical quantity, and the control circuit identifies and sets a resistance value of a variable resistance section provided in a main control section that controls rotation of the electric blower and a variable resistance section provided in the control operation section. a remote control unit that inputs the output of the converter to the main control circuit when the resistance value is within the set value, and inputs an input change corresponding to the resistance value change to the main control unit when the resistance value is in a range other than the set value; Become,
The control operation section of the hose has an operation body that changes the resistance value of the variable resistance section, and this operation body has an off position where the operation of the electric blower is stopped, a maximum resistance value position where the electric blower is operated at low input, and a maximum resistance value position where the electric blower is operated at low input. The electric blower It is possible to switch between manual control and automatic control using the hand control section of the hose, and unlike conventional vacuum cleaners, there is no need to switch between manual control and automatic control on the vacuum cleaner main body side, improving operability.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram of a vacuum cleaner showing an embodiment of the present invention, and FIG. 2 is a circuit diagram of the same resistance value identification circuit.
Figure 3 is a perspective view of the vacuum cleaner, Figure 4 is a partially cutaway plan view of the control section of the hose;
Figure 5 is a longitudinal sectional front view of the same as the above, Figure 6 is an explanatory diagram of the variable resistance part of the same as the above, Figure 7 is a plan view of the control operation part of the same as the above hose, Figure 8 is a front view of the same as the above, and Figure 9 is another implementation. FIG. 10 is a front view of the same as the above, FIG. 11 is an explanatory diagram of the variable resistance section of the above, and FIG. 12 is a plan view of the control and operation section of the hose showing another embodiment. , FIG. 13 is a front view of the same as above, FIG. 14 is an explanatory diagram of the variable resistance part of same as above, FIG. 15 is a plan view of a control operation part of a hose showing another embodiment, FIG. 16 is a front view of same as above, and The figure is an explanatory diagram of the variable resistance section same as above, FIG. 18 is a plan view of the control operation section of the hose showing another embodiment, FIG. 19 is a front view of the same as above, FIG. 20 is an explanatory diagram of the variable resistance section same as above, Fig. 21 is a plan view of a control operation section of a hose showing another embodiment, Fig. 22 is a front view of the same as above, Fig. 23 is an explanatory diagram of a variable resistance section of same as above, and Fig. 24 is a control circuit of a conventional vacuum cleaner. Figure 25 is an explanatory diagram of the variable resistor section of the same, Figure 2 is the circuit diagram of
Figure 6 is a plan view of the control operation section of the same hose, No. 27.
The figure is a front view of the same as above. 20...Vacuum cleaner main body, 21...Electric blower, 22...Control circuit, 23...Dust collection case of dust collection unit, 24...Hose, 29...Control operation unit, 3
0... Operating body, 31... AC power supply, 32... Bidirectional thyristor, 33... Main control unit, 34... Remote control circuit, 36... Resistance value identification circuit, 41...
Variable resistance section, 45...detection body, 46...conversion body.

Claims (1)

[Claims] 1 A dust collecting section is formed in the vacuum cleaner body, and an electric blower is built into the vacuum cleaner body, and a control circuit for controlling the electric blower is operated according to the pressure or flow rate of the suction air path of the vacuum cleaner body. Comprising a detection body and a converter that operates in conjunction with the detection body and converts the amount of displacement of the detection body into an output of an electrical quantity,
The vacuum cleaner body has a hose connected to the dust collection part in communication and having a control operation part, and the control circuit includes:
Identifying the resistance value of the variable resistance section provided in the main control section for controlling the rotation of the electric blower and the control operation section, and inputting the output of the converter to the main control circuit when the resistance value is set, and inputting the output of the converter to the main control circuit. and a remote control section that inputs an input change corresponding to the change in resistance value to the main control section when the resistance value is in a range other than the set value, and the control operation section is configured to perform an operation for varying the resistance value of the variable resistance section. The operating body has an off position where the operation of the electric blower is stopped, a maximum resistance value position where the electric blower is operated at a low input, and a variable resistance value position where the resistance value is sequentially changed from the low input operation position to the maximum input operation. A vacuum cleaner characterized in that the input of the electric blower can be selectively set to a set resistance value position that changes the input according to the output of the converter.