JP3532928B2 - Central cleaner - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a central cleaner which is used by inserting a hose unit into a hose insertion port connected to a cleaner body.

[0002]

2. Description of the Related Art In recent years, a central cleaner in which a hose unit is inserted into a hose insertion port connected to a cleaner body has been widely used because of its good operability and low noise.

Conventionally, this type of central cleaner is shown in FIG.
And the structure as shown in FIG. 6 was general. Less than,
The configuration will be described.

As shown in the figure, a fan motor 1 is built in a cleaner body (hereinafter referred to as body) 4 together with a control circuit 2 and a filter 3 for filtering sucked dust, and a body 4
Is installed outdoors or under the stairs, and its suction port 5 side is connected to the hose insertion ports 6, 7, 8 of each room by connecting a pipe 9 to one of these hose insertion ports 6, 7, 8 The hose unit 10 is connected, and the extension pipes 11 and 12 and the floor nozzle 13 are connected to the tip of the hose unit 10. Also, the hose outlets 6, 7,
The conductive wire 14 from 8 is connected in parallel to the control circuit 2 in the main body 4, and is constructed so that the exhaust air is exhausted outdoors or under the floor of the house.

To explain the operation of the above structure, the user inserts the hose unit 10 into the hose insertion port 7,
When the hand switch of the hose unit 10 is turned on, the control circuit 2 drives the fan motor 1 to move the floor nozzle 13,
Cleaning is performed by suctioning dust from the intake port 5 through the extension pipes 12 and 11, the hose unit 10, the hose insertion port 7 and the pipe 9. A piano wire embedded in the hose also functions as a signal line that conveys the fact that the hand switch is turned on.

[0006]

In such a central cleaner, the number of three-story houses has been increasing in recent years,
In order to save the trouble of carrying the hose units 10, one hose unit 10 is provided on each floor, and each hose unit 10 is inserted for cleaning when necessary (one main body). However, in this case, forgetting to pull out the hose unit 10 often occurs. For example, after cleaning the first floor, turn off the hand switch of the hose unit 10, and go up to the second floor to use the hose unit 10 placed on the second floor to clean the hose unit 10 on the first floor by inserting the hose. When the hand switch of the hose unit 10 on the second floor is turned on with the hose unit 10 still in the mouth,
Since the hose units (first floor and second floor) 10 that are plugged in are sucked and the hose unit (second floor) 10 in the ON state has a reduced suction force, there is a problem that sufficient cleaning cannot be performed. Was. Further, since the hose unit (first floor) 10 in the off state is also inhaled, there is a problem that an unexpected thing is inhaled and a danger occurs to a person.

The present invention is to solve the above-mentioned problems. When a plurality of hose units are inserted, an indication is displayed on the display to inform the user and the cause of the decrease in suction force is notified. It is intended to provide a central cleaner that has excellent usability and safety by prohibiting suction from unloaded hose units.

[0008]

In order to achieve the above-mentioned object, the present invention comprises a cleaner body, a hose insertion port connected to the cleaner body, and a hose unit inserted into the hose insertion port. The hose unit includes a switch for turning on and off a fan motor, and a fixed resistor connected to a circuit independent of the switch, and the cleaner body includes a fan motor and a fixed resistor. A voltage signal input section for inputting a signal, a reference voltage generation section for generating a plurality of reference voltages corresponding to the number of inserted hose units, and an output from the voltage signal input section and the reference voltage generation section are compared. The comparison unit and the number determination unit for determining the number of hose units in the insertion state based on the output signal of the comparison unit, and the number determination unit for insertion
It was determined that there were multiple hose units
The first problem solving means is to stop the operation of the fan motor at times.

The hose unit of the first means for solving the problems is a display for indicating that a plurality of hose units are inserted, in addition to a switch and a fixed resistor for setting ON / OFF of the fan motor. According to a second problem solving means, the display device is driven and stopped by a display device driving unit that operates according to an output signal of the number determination unit.

[0010]

According to the first means for solving the above problems, the present invention provides:
When a plurality of hose assemblies have been inserted is determined by the number determining unit, for full Anmota stops, there is no suction from the hose unit that is not being used, inhale the unnecessary, harm to people No more giving.

In addition, the second problem solving means provides a plurality of
When the hose unit is plugged in, the fan motor will stop, so there will be no suction from the hose unit that is not in use, so that unnecessary things will not be sucked in or harm to people will be prevented. The user can easily know that another hose unit is inserted.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. The same components as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted.

As shown in the figure, the hose unit 15 is
It incorporates a switch 16 for driving the fan motor 1 and an optional fixed resistor 17. A plurality of such hose units 15 are used so that they can be inserted into the hose insertion port 18. In addition, the reference voltage generator 19
A voltage corresponding to the number of inserted hose units 15 is generated, and in this embodiment, resistors R1, R2, R are used.
3 is configured so that Va = 4V and Vb = 2V. The voltage signal input unit 20 uses the resistor R4 to
It is connected to a fixed resistor 17 in the hose unit 15 and converts the number of hose units 15 into a voltage. When the number of hose units 15 is 0, it is 0 V, when it is 1, it is 3 V, and 2 or more. Is set to 5 V or higher. The comparison unit 21 compares the output signals of the reference voltage generation unit 19 and the voltage signal input unit 20, and OP
It is composed of amplifiers 21a and 21b. The number determination unit 22 determines the number of the hose units 15 inserted based on the output signal of the comparison unit 21, and uses a general-purpose NOR gate. Fan motor drive unit 23
Drives the fan motor 1 by the output of the number determination unit 22. These reference voltage generator 19, voltage signal input unit 2
0, the comparison unit 21, the number determination unit 22, and the fan motor drive unit 23 are built in the main body 24 together with the fan motor 1.

In the above structure, FIGS. 2 (a) to 2 (d)
The operation will be described with reference to FIG.
Is not inserted at all, the voltage signal input unit 20
Since the voltage of 0 is 0V, the output of the comparison unit 21 is low level (hereinafter, L) of the OP amplifier 21a and high level (hereinafter, H) of the OP amplifier 21b, and the output of the number determination unit 22 is L. And the fan motor drive unit 23
Is off. Therefore, the fan motor 1 is off. Similarly, when the number of the hose unit 15 is one, the voltage of the voltage signal input unit 20 is 3V, and therefore the output of the comparison unit 21 is L for the OP amplifier 21a and 2 for the OP amplifier 2.
1b becomes L, the output of the number determination unit 22 becomes H, and the fan motor drive unit 23 is turned on. Therefore,
The fan motor 1 is turned on.

Next, when the number of hose units 15 is two or more, the voltage of the voltage signal input section 20 is 5 V or more, and therefore the output of the comparison section 21 is H and OP by the OP amplifier 21a.
The amplifier 21b becomes L, the output of the number determination unit 22 becomes L, and the fan motor drive unit 23 is turned off. Therefore, the fan motor 1 does not turn on.

As described above, according to the central cleaner of the embodiment of the present invention, the fan motor 1 is not turned on when a plurality of hose units 15 are inserted.

Next, another embodiment of the present invention will be described with reference to FIG. The same components as those in the above embodiment are designated by the same reference numerals, and the description thereof will be omitted.

As shown in the figure, the hose unit 25 is
In addition to the switch 16 and the fixed resistor 17, a display 26 for indicating that a plurality of hose units 25 are inserted is provided, and the display 26 is provided by the output signal of the number determination unit 28 provided in the main body 27. Display drive unit 29 that operates
Drive and stop by. The number determination unit 28 includes a general-purpose AND gate 28a and a NOR gate 28
b and the AND gate 28a has a display driver 29
The NOR gate 28b outputs a signal to the fan motor drive unit 23.

The operation of the above structure will be described with reference to FIGS. 4 (a) to 4 (e). When the hose unit 25 is not inserted at all, as in the above embodiment,
The fan motor drive unit 23 is off. Therefore, the fan motor 1 is off. Further, since the input of the display drive unit 29 is L, the output thereof is L and the display 26 does not light. When the number of the hose unit 25 is one, the fan motor drive unit 23 is turned on as in the above embodiment, but the output to the display drive unit 29 is L, so the fan motor 1 is turned on. The display 26 does not light up, either. However, when the number of hose units 25 is two or more, the voltage of the voltage signal input section 20 is 5 V or more, and the output of the comparison section 21 is H and OP by the OP amplifier 21a.
The amplifier 21b becomes L, and the output of the number determination unit 28 is A
The ND gate 28a becomes H, the NOR gate 28b becomes L, the display drive unit 29 is turned on, and the fan motor drive unit 23 is turned off. Therefore, the display 26
Lights up, but the fan motor 1 turns off.

As described above, according to the central cleaner of the embodiment of the present invention, it is possible to easily know that the plurality of hose units 25 are inserted by the indicator 26 provided at the proximal portion of the hose unit 25, At the same time, the fan motor 1 does not turn on.

[0021]

As is apparent from the above embodiments, according to the present invention, it comprises a cleaner body, a hose insertion port connected to the cleaner body, and a hose unit inserted into the hose insertion port. The hose unit includes a switch for turning on and off a fan motor, and a fixed resistor, and the cleaner body has a fan motor and a voltage signal input unit for inputting a signal from the fixed resistor. A reference voltage generation unit that generates a plurality of reference voltages corresponding to the number of inserted hose units, a comparison unit that compares outputs from the voltage signal input unit and the reference voltage generation unit, and an output signal of the comparison unit Equipped with a hose number judgment unit for judging the number of hose units in the inserted state ,
Therefore, there are multiple hose units that are plugged in.
When it is determined that the fan motor is stopped
As a result, there is no suction from an unused hose unit, no unnecessary substances are sucked in, no harm is done to people, and safety can be improved.

Further, the hose unit indicates that a plurality of hose units are inserted in addition to a switch for turning on / off the fan motor and a fixed resistor connected to a circuit independent of the switch. It includes a display for said indicator, driven by display driver for operating the output signal of the number determining unit, <br/> whether we were to perform the stop, can stop the fan motor, not used There is no suction from the hose unit, no unnecessary things are inhaled, no harm to people, safety can be improved, and at the same time, the user can easily insert another hose unit by the indicator. You can know that and improve usability.

[Brief description of drawings]

FIG. 1 is a circuit diagram of a central cleaner according to an embodiment of the present invention.

2A to 2D are explanatory views of the operation of the central cleaner.

FIG. 3 is a circuit diagram of a central cleaner according to another embodiment of the present invention.

4 (a) to (e) are explanatory views of the operation of the central cleaner.

FIG. 5 is a block diagram of a conventional central cleaner.

FIG. 6 is a circuit diagram of the central cleaner.

[Explanation of symbols]

1 fan motor 15 Hose unit 16 switch 17 Fixed resistor 18 Hose outlet 19 Reference voltage generator 20 Voltage signal input section 21 Comparison Department 22 Number judgment section 23 Fan motor drive 24 Vacuum cleaner body

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) A47L 5/38

Claims (2)

(57) [Claims] 1. A cleaner main body, a hose insertion port connected to the vacuum cleaner main body, and a hose unit inserted into the hose insertion port, wherein the hose unit is a switch for setting ON / OFF of a fan motor. And a fixed resistor connected to a circuit independent of the switch, the cleaner body includes a fan motor, a voltage signal input unit for inputting a signal from the fixed resistor, and a hose inserted. A reference voltage generation unit that generates a plurality of reference voltages corresponding to the number of units, a comparison unit that compares outputs from the voltage signal input unit and the reference voltage generation unit, and is in a plugged state by an output signal of the comparison unit. and a number determination unit for determining the number of hose assemblies, pointed by the number determination unit
It is determined that the number of hose units that are
A central cleaner configured to stop the operation of the fan motor when it is turned on . 2. The hose unit includes, in addition to a switch for setting on / off of a fan motor and a fixed resistor, an indicator for indicating that a plurality of hose units are inserted, and the indicator includes: 2. The central cleaner according to claim 1, wherein the central cleaner is driven and stopped by a display driving unit which operates according to an output signal of the number determining unit.