JP2014155668A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner capable of starting an electric motor by an inexpensive and compact power source device.SOLUTION: A vacuum cleaner comprises: an electric suction unit 110 including an electric motor 112; a secondary cell 140 to be mounted on the electric suction unit 110; a power source device 150 removably connected to the electric suction unit 110 and charging the secondary cell 140; a current detection unit 107 for outputting a current detection value based on a current flowing in the electric motor 112; and a power source changeover unit 108 for changing over an output to be supplied to the electric motor 112 into the output of the power source device 150 or the output of the secondary cell 140 in accordance with the amount of a current to be detected by the current detection unit 107 when the electric motor 112 is driven in a state where the power source device 150 is connected to the electric suction unit 110.

Description

  The present invention relates to a vacuum cleaner equipped with a secondary battery.

  A conventional rechargeable handy type vacuum cleaner, for example, as shown in Patent Document 1, a secondary battery is mounted on the main body of the vacuum cleaner, and the main body of the vacuum cleaner is placed on a charging stand. Recharge the secondary battery. After charging, the main body of the vacuum cleaner can be removed from the charging stand and cleaned only by the main body of the vacuum cleaner. However, in the conventional handy type vacuum cleaner, if the secondary battery charge amount decreases during cleaning and sufficient output cannot be supplied, cleaning cannot be continued without recharging. is there.

  In order to solve this problem, when the amount of charge of the secondary battery of the vacuum cleaner main body decreases, it is possible to continue cleaning by connecting a power supply device such as an AC adapter to the main body of the vacuum cleaner. Conceivable.

JP 2000-189367 A (FIG. 1)

  However, the motor used for the blower of a vacuum cleaner has a large starting torque, and it is necessary to flow a large current at the time of starting, and the current that can be flowed by an AC adapter for small home appliances is insufficient. In addition, AC adapters that can carry large currents require large transformers and rectifiers for generating DC output from commercial power supplies, resulting in expensive and heavy AC adapters, and handy-type electric cleaning Not suitable for the machine.

  The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to provide a vacuum cleaner capable of starting an electric motor for a blower with an inexpensive and small power supply device. That is.

  An electric vacuum cleaner according to an aspect of the present invention includes an electric suction portion including an electric motor, a secondary battery mounted on the electric suction portion, and a power source that is detachably connected to the electric suction portion and charges the secondary battery. A current detection unit that outputs a current detection value based on a current flowing through the motor, a current detection value, and the current detection unit that detects when the electric motor is driven in a state where the power supply device is connected to the electric suction unit And a power supply switching unit that switches the output supplied to the electric motor to the output of the power supply device or the output of the secondary battery according to the amount of current.

  According to this configuration, when starting the vacuum cleaner in a state where the power supply device is connected to the electric suction unit, the electric switch of the electric suction unit is started up by the output of the secondary battery by the power supply switching unit, and the power source is turned on after the start-up. Since it can continue to drive by switching to the output of the device, the vacuum cleaner can be driven for a long time with an inexpensive and small power supply device.

  An electric vacuum cleaner according to another aspect of the present invention includes an electric suction unit including an electric motor, a secondary battery mounted on the electric suction unit, and removably connected to the electric suction unit to charge the secondary battery. When the electric motor is driven in a state where the power supply device is connected to the electric power supply unit and the electric suction unit, the output of the secondary battery is supplied to the electric motor for a predetermined time from the startup of the electric motor, And a power supply switching unit that switches the output of the power supply device to be supplied to the electric motor after a predetermined time.

  According to this configuration, when starting the vacuum cleaner in a state where the power supply device is connected to the electric suction unit, the electric switch of the electric suction unit is started up by the output of the secondary battery by the power supply switching unit, and the power source is turned on after the start-up. Since it can continue to drive by switching to the output of the device, the vacuum cleaner can be driven for a long time with an inexpensive and small power supply device.

  According to the present invention, when starting the vacuum cleaner in a state where the power supply device is connected to the electric suction unit, the electric motor of the electric suction unit is started up by the output of the secondary battery by the power supply switching unit, and the power source is turned on after the start-up. Since it can continue to drive by switching to the output of the device, the vacuum cleaner can be driven for a long time with an inexpensive and small power supply device.

It is side surface sectional drawing which shows the structure of the vacuum cleaner which concerns on the 1st Embodiment of this invention. It is a schematic circuit diagram which shows the structure of the circuit of the vacuum cleaner which concerns on the 1st Embodiment of this invention. It is a timing diagram which shows operation | movement of the power supply switching part which concerns on the 1st Embodiment of this invention. It is a schematic circuit diagram which shows the structure of the circuit of the vacuum cleaner which concerns on the 2nd Embodiment of this invention. It is a timing diagram which shows operation | movement of the power supply switching part which concerns on the 2nd Embodiment of this invention.

Hereinafter, an embodiment of a vacuum cleaner will be described with reference to the drawings. In each figure referred to below, the same parts as those in the other figures will be described with the same reference numerals.
(First embodiment)
First, the structure of the vacuum cleaner which concerns on 1st Embodiment is demonstrated with reference to FIG. Drawing 1 is a side sectional view showing the composition of the vacuum cleaner concerning a 1st embodiment. As shown in FIG. 1, the electric vacuum cleaner includes a vacuum cleaner main body 100, an AC adapter 150 that is a power supply device, and a stand unit 200.

  The vacuum cleaner main body 100 includes an electric suction part 110, an extension pipe 120, and a nozzle part 130. The electric suction unit 110 has a handle 102 at the top, and a switch 104 is arranged at a position where the electric suction unit 110 can be operated with the handle 102 held. The electric suction unit 110 includes a circuit board 106, a secondary battery 140, a motor 112 that is an electric motor, a fan 114, and a dust collection chamber 116. A fan 114 is attached to the shaft of the motor 112, and a dust collection chamber 116 is provided opposite the fan 114. The electric suction unit 110 has a suction port 118 connected to the dust collection chamber 116. The extension pipe 120 has one end connected to the suction port 118 and the other end connected to the nozzle portion 130. A current detection unit 107 and a power supply switching unit 108 are mounted on the circuit board 106.

The AC adapter 150 is a power supply device configured by a transformer, a rectifier, or the like for outputting DC power from AC power of a commercial power source. The AC adapter 150 can be detachably connected to the cleaner body 100 or the stand unit 200. The AC adapter 150 is configured to supply power necessary for charging the secondary battery 140.
The stand unit 200 can stably stand the cleaner main body 100, and has a charging contact 202 at a position where the stand unit 200 and the cleaner main body 100 are in contact with each other. The vacuum cleaner main body 100 can charge the secondary battery 140 mounted on the electric suction unit 110 by leaning the vacuum cleaner main body 100 with the AC adapter 150 connected to the stand unit 200. The secondary battery 140 can supply an output required when the motor 112 for the vacuum cleaner is started. On the other hand, the AC adapter 150 can supply power necessary for charging the secondary battery 140, but is insufficient to supply power necessary for starting the motor 112 for the vacuum cleaner.

  Next, the circuit configuration of the vacuum cleaner according to the first embodiment will be described with reference to FIG. FIG. 2 is a schematic circuit diagram illustrating a configuration of a circuit of the electric vacuum cleaner according to the first embodiment. As shown in FIG. 2, a current detection unit 107 and a power supply switching unit 108 are mounted on the circuit board 106. The current detection unit 107 is connected between the negative terminal of the motor 112 and the ground potential, and outputs a current detection value IMOT based on the current flowing through the motor 112. The power supply switching unit 108 is connected to the output BATO from the secondary battery 140, the output ADPO from the AC adapter 150, the current detection value IMOT from the current detection unit 107, and the switch 104. Based on the current detection value IMOT, the power supply switching unit 108 switches between connecting the output BATO and the output OUT or connecting the output ADPO and the output OUT. The power supply switching unit 108 outputs the output OUT to the + terminal of the motor 112.

  Next, operation | movement of the vacuum cleaner which concerns on 1st Embodiment is demonstrated with reference to FIG. FIG. 3 is a timing chart showing the operation of the power supply switching unit according to the first embodiment. As shown in FIG. 3, when the switch 104 is turned on (from L level to H level) at time t0, the power supply switching unit 108 connects the output BATO and the output OUT and outputs the output OUT to the + terminal of the motor 112. Output.

The power supply switching unit 108 monitors whether or not the current detection value IMOT from the current detection unit 107 is below a predetermined threshold value Vth. The motor 112 requires the output BATO from the secondary battery 140 at the time of startup, but when the rotation of the motor 112 is stabilized after startup, the current detection value IMOT falls below a predetermined threshold value Vth at time t1.
The power supply switching unit 108 switches the connection between the output BATO and the output OUT to the connection between the output ADPO and the output OUT because the current detection value IMOT has fallen below the predetermined threshold value Vth at the time t1, and the motor 112 switches to the + terminal of the motor 112. Output OUT is output.

According to the first embodiment described above, the following effects can be obtained.
In the first embodiment, when starting the vacuum cleaner with the AC adapter 150 (power supply device) connected to the electric suction unit 110, the motor 112 (electric motor) of the electric suction unit 110 is turned on by the power supply switching unit 108. The secondary battery 140 is activated by the output BATO of the secondary battery 140, and can be continuously switched to the output ADPO of the AC adapter 150 after the activation, so that the vacuum cleaner can be driven for a long time by the inexpensive and small AC adapter 150. .

(Second Embodiment)
In the first embodiment, the current detection unit 107 outputs a current detection value IMOT based on the current flowing through the motor 112, and the power supply switching unit 108 outputs the output BATO and the AC adapter from the secondary battery 140 based on the current detection value IMOT Although it has been described that the output ADPO from 150 is switched, the current detection unit 107 may not be provided.

  Next, the structure of the circuit of the vacuum cleaner which concerns on 2nd Embodiment is demonstrated with reference to FIG. FIG. 4 is a schematic circuit diagram illustrating a configuration of a circuit of the vacuum cleaner according to the second embodiment. As shown in FIG. 4, a power supply switching unit 108 is mounted on the circuit board 106. The power supply switching unit 108 is connected to the output BATO from the secondary battery 140, the output ADPO from the AC adapter 150, and the switch 104. The power supply switching unit 108 switches from the connection between the output BATO and the output OUT to the connection between the output ADPO and the output OUT when a predetermined time elapses after the switch 104 is turned on. The power supply switching unit 108 outputs the output OUT to the + terminal of the motor 112. The predetermined time is set based on an oscillator (not shown) mounted on the circuit board 106.

Next, operation | movement of the vacuum cleaner which concerns on 2nd Embodiment is demonstrated with reference to FIG. FIG. 5 is a timing diagram illustrating an operation of the power supply switching unit according to the second embodiment. As shown in FIG. 5, when the switch 104 is turned on at time t <b> 0, the power supply switching unit 108 connects the output BATO and the output OUT, and outputs the output OUT to the + terminal of the motor 112.
The power supply switching unit 108 connects the output ADTO and the output OUT from the connection between the output BATO and the output OUT when a predetermined time (= t1−t0) necessary for the rotation of the motor 112 to stabilize after the startup. The output OUT is output to the + terminal of the motor 112.

According to the second embodiment described above, the following effects can be obtained.
In the second embodiment, when starting the vacuum cleaner with the AC adapter 150 (power supply device) connected to the electric suction unit 110, the motor 112 (electric motor) of the electric suction unit 110 is turned on by the power supply switching unit 108. The secondary battery 140 is activated by the output BATO of the secondary battery 140, and can be continuously switched to the output ADPO of the AC adapter 150 after the activation, so that the vacuum cleaner can be driven for a long time by the inexpensive and small AC adapter 150. .

(Modification 1)
In the first and second embodiments, the case where the power supply device is arranged in the AC adapter 150 and placed outside the electric suction unit 110 has been described. However, the power supply device is arranged inside the electric suction unit 110. You may do it. In this case, only the power cable need be connected to the cleaner body 100. The power supply switching unit 108 is connected to the output ADPO of the power supply device.

(Modification 2)
In the first embodiment and the second embodiment, the operation of the power supply switching unit 108 when starting the motor 112 with the AC adapter 150 connected is described. However, in a state where the AC adapter 150 is not connected (in the case of Modification 1, the power cable is not connected), when the output ADPO is 0, the power switching unit 108 outputs the output BATO and the output OUT. What is necessary is just to maintain the connected state.

  It should be noted that the scope of the present invention is not limited to the illustrated and described exemplary embodiments, but includes all embodiments that provide the same effects as those intended by the present invention. Furthermore, the scope of the invention is not limited to the combinations of features of the invention defined by the claims, but can be defined by any desired combination of particular features among all the disclosed features.

  INDUSTRIAL APPLICATION This invention can be utilized for the vacuum cleaner which mounts a secondary battery and can drive in the state which connected the power supply device.

DESCRIPTION OF SYMBOLS 100 Vacuum cleaner main body 102 Handle 104 Switch 106 Circuit board 107 Current detection part 108 Power supply switching part 110 Electric suction part 112 Motor 114 Fan 116 Dust collection chamber 118 Suction port 120 Extension pipe 130 Nozzle part 140 Secondary battery 150 AC adapter 200 Stand part 202 contacts

Claims (2)

An electric suction part including an electric motor;
A secondary battery mounted on the electric suction unit;
A power supply device removably connected to the electric suction unit and charging the secondary battery;
A current detection unit that outputs a current detection value based on a current flowing through the electric motor;
When the electric motor is driven in a state where the power supply device is connected to the electric suction unit, an output supplied to the electric motor according to the amount of current detected by the current detection unit or an output of the power supply device or the A power switching unit for switching to the output of the secondary battery;
A vacuum cleaner characterized by including. An electric suction part including an electric motor;
A secondary battery mounted on the electric suction unit;
A power supply device removably connected to the electric suction unit and charging the secondary battery;
When the electric motor is driven in a state where the power supply device is connected to the electric suction unit, the output of the secondary battery is supplied to the electric motor for a predetermined time from the start of the electric motor, and after the predetermined time Is a power supply switching unit that switches the output of the power supply device to be supplied to the electric motor,
A vacuum cleaner characterized by including.