CN113384184B - Electric vacuum cleaner - Google Patents
Electric vacuum cleaner Download PDFInfo
- Publication number
- CN113384184B CN113384184B CN202110028696.9A CN202110028696A CN113384184B CN 113384184 B CN113384184 B CN 113384184B CN 202110028696 A CN202110028696 A CN 202110028696A CN 113384184 B CN113384184 B CN 113384184B
- Authority
- CN
- China
- Prior art keywords
- switch
- secondary battery
- circuit
- vacuum cleaner
- charging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000428 dust Substances 0.000 abstract description 36
- 238000009791 electrochemical migration reaction Methods 0.000 abstract description 7
- 238000009413 insulation Methods 0.000 abstract description 6
- 230000009467 reduction Effects 0.000 abstract description 6
- 239000000758 substrate Substances 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 49
- 238000000926 separation method Methods 0.000 description 10
- 230000004913 activation Effects 0.000 description 6
- 230000009849 deactivation Effects 0.000 description 6
- 230000007704 transition Effects 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 230000004044 response Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010200 validation analysis Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L5/00—Structural features of suction cleaners
- A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
- A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
- A47L5/24—Hand-supported suction cleaners
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
- A47L9/2836—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means characterised by the parts which are controlled
- A47L9/2842—Suction motors or blowers
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
- A47L9/2857—User input or output elements for control, e.g. buttons, switches or displays
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
- A47L9/2868—Arrangements for power supply of vacuum cleaners or the accessories thereof
- A47L9/2884—Details of arrangements of batteries or their installation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Vacuum Cleaner (AREA)
Abstract
The invention provides an electric dust collector which can restrain the reduction of convenience even if the reduction of insulation resistance value caused by electrochemical migration occurs on a printed substrate in a switch. An electric vacuum cleaner (1) is provided with: an electric blower (18) which is driven by the power stored in the secondary battery (13) to generate a suction negative pressure in the suction air passage; a first circuit (35) to which a voltage is applied by the power stored in the secondary battery (13); switches (26a, 26b) provided in the first circuit (35) and configured to switch between energization and interruption of energization of the first circuit (35) and to receive an operation input; a power cut-off switch (51) that is provided in a first circuit (35) that connects the secondary battery (13) and the switches (26a, 26b), and that switches between conduction and interruption of conduction in the first circuit (35) in accordance with a predetermined event; and a main body control unit (21) that changes the operating state of the electric blower (18) when the first circuit (35) is energized by the switches (26a, 26 b).
Description
Technical Field
Embodiments of the present invention relate to an electric vacuum cleaner.
Background
There is known an electric vacuum cleaner in which an input of an electric blower is repeatedly switched ON (ON) and OFF (OFF) every time an operation switch is short-circuited. The operation switch is a switch that receives a pressing operation, and examples thereof include a tactile switch (touch switch) and a membrane switch (membrane switch).
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2007-268081
Disclosure of Invention
Problems to be solved by the invention
However, a printed circuit board is used in a contact switch and a membrane switch. In a printed circuit board, an event may occur in which a metal used as a wiring or an electrode moves on an insulator. This event is called electrochemical migration, or ion migration. In a printed circuit board in which electrochemical migration has occurred, the insulation resistance value between electrodes may decrease.
If the insulation resistance value between the electrodes on the printed circuit board in the switch is reduced, the switch may be irregularly short-circuited without depending on the intention of the user. If the switch is irregularly short-circuited, the electric blower may be inadvertently started to operate, or the electric blower may be inadvertently stopped, or the operation output of the electric blower may be accidentally changed, which is inconvenient. For example, in an electric vacuum cleaner provided with a secondary battery as a power source for an electric blower, there is a risk that the electric blower accidentally starts operating and the battery runs out. Such exhaustion of the battery, which is not dependent on the intention of the user, impairs the convenience of the electric vacuum cleaner.
Accordingly, an object of the present invention is to provide an electric vacuum cleaner capable of suppressing a reduction in convenience even when a reduction in insulation resistance value due to electrochemical migration occurs on a printed circuit board in a switch.
Means for solving the problems
In order to solve the above problem, an electric vacuum cleaner according to an embodiment of the present invention includes: a suction air path; a secondary battery; an electric blower driven by the electric power stored in the secondary battery and generating a suction negative pressure in the suction air passage; a circuit to which a voltage is applied by the power stored in the secondary battery; a first switch provided in the circuit, switching between energization and interruption of energization of the circuit, and accepting an operation input; a second switch provided in the electric circuit connecting the secondary battery and the first switch, the second switch switching between conduction and interruption of conduction in the electric circuit in accordance with a predetermined event; and a control unit that changes an operation state of the electric blower when the first switch energizes the circuit.
Drawings
Fig. 1 is a perspective view of an electric vacuum cleaner according to an embodiment of the present invention.
Fig. 2 is a configuration diagram of an input detection circuit and a charging path connection detection circuit of the electric vacuum cleaner according to the embodiment of the present invention.
Fig. 3 is a configuration diagram of another example of an input detection circuit of an electric vacuum cleaner according to an embodiment of the present invention.
Description of the reference numerals
1 … electric vacuum cleaner, 11 … handle, 12 … vacuum cleaner body, 13 … secondary battery, 15 … extension tube, 16 … suction inlet body, 17 … main body case, 17a … front half, 17b … rear half, 18 … electric blower, 19 … dust separation dust collection part, 21 … main body control part, 23 … main body connection port, 25 … charging connector, 26a … main switch, 26b … operation mode switch, 27 … suction inlet, 26 … input part, 28 … rotary cleaning body, 29 … motor, 31a … input detection circuit, 32 … charging path connection detection circuit, 35 … first circuit, 36 … first pull-up resistor, 37 … first protection resistor, 38 … resistor circuit, 39a, 39b … resistor, 45 second circuit, 46 … second pull-up resistor, 47 second resistor … protection resistor, 68548, … protection switch, … cut-off power supply plug-in, 61 … charging circuit.
Detailed Description
Embodiments of a suction port body and an electric vacuum cleaner according to the present invention will be described with reference to fig. 1 to 3.
Fig. 1 is a perspective view of an electric vacuum cleaner according to an embodiment of the present invention.
As shown in fig. 1, the electric vacuum cleaner 1 of the present embodiment is, for example, a stick type electric vacuum cleaner 1, and the electric vacuum cleaner 1 includes: a cleaner main body 12 having a handle 11 and capable of being handled by hand; a secondary battery 13 (also referred to as a battery, a rechargeable battery, and a rechargeable battery) that is attachable to and detachable from the cleaner body 12; an extension pipe 15 connected to the cleaner body 12; and a suction port body 16 connected to the extension pipe 15.
The electric vacuum cleaner 1 may be of a horizontal type, a vertical type, or a hand-held type. The electric vacuum cleaner 1 may be a cordless type including the secondary battery 13 as a power source, or a wired type in which electric power is obtained from a commercial ac power source through a power line.
The cleaner body 12 includes: a main body case 17 having a handle 11; an electric blower 18 housed in the main body case 17 and generating suction negative pressure; a dust separating and collecting part 19 detachably provided in the main body case 17; and a main body control unit 21 that mainly controls the electric blower 18.
The cleaner body 12 drives the electric blower 18 by the electric power stored in the secondary battery 13, and causes a negative pressure generated by the driving of the electric blower 18 to act on the extension pipe 15. The electric vacuum cleaner 1 sucks air containing dust (hereinafter, referred to as "dust-containing air") from a floor surface through the suction port body 16 and the extension pipe 15, separates the dust from the dust-containing air, collects and accumulates the separated dust, and exhausts the separated air.
The main body case 17 includes: a cylindrical front half portion 17a disposed on an extension line of the extension pipe 15 in a side view; and a rear half 17b bent from the front half 17a and gradually distant from the extension line of the extension pipe 15. A dust separating and collecting part 19 is provided above the front half 17a of the main body case 17. The rear half 17b of the main body casing 17 extends rearward in a use state (fig. 2) in which the suction port body 16 is disposed on the floor.
A main body connection port 23 is provided in a front portion of the main body case 17.
The main body connection port 23 is a joint to which the extension pipe 15 can be detachably attached. The main body connection port 23 projects from the cylindrical front half portion 17a of the main body case 17 toward the front. The main body connection port 23 is a fluid inlet of the cleaner main body 12, and fluidly connects the extension pipe 15 and the dust separation and collection part 19. By detaching the extension pipe 15 from the cleaner body 12, the body connection port 23 also functions as a suction port when the cleaner body 12 is used as a single body. That is, when the extension pipe 15 is detached from the cleaner body 12, the dust separating and collecting part 19 is an intake air passage from the electric blower 18 to the body connection port 23. When the extension pipe 15 is attached to the cleaner body 12, the suction opening body 16, the extension pipe 15, and the dust separation/collection part 19 are a suction air passage from the electric blower 18 to the suction opening 27.
The handle 11 is integrally provided to the main body case 17. The handle 11 is a portion to be held by a hand of a user for cleaning a floor surface with the electric vacuum cleaner 1. The handle 11 is arched toward the rear end of the main body case 17 from the vicinity of the rear end of the dust separating and collecting section 19. The handle 11 is arranged to intersect an extension line of the center line of the extension pipe 15.
An input unit 26 is provided near the handle 11, and the input unit 26 is disposed within a range in which a user holding the handle 11 moves his or her fingers.
The input unit 26 includes: a main switch 26a that receives an operation start operation and an operation stop operation of the electric blower 18; and an operation mode changeover switch 26b for receiving an operation of selecting the operation mode of the electric blower 18. The main switch 26a and the operation mode changeover switch 26b are electrically connected to the main body control unit 21. The input unit 26 may include a brush switch that receives a start operation and a stop operation of the power supply to the suction port body 16.
The user of the electric vacuum cleaner 1 can operate the input unit 26 to start or stop the electric blower 18. The main body control unit 21 starts the electric blower 18 when receiving an operation signal from the main switch 26a while the electric blower 18 is stopped. The main body control unit 21 stops the electric blower 18 when receiving an operation signal from the main switch 26a during operation of the electric blower 18.
The user of the electric vacuum cleaner 1 can select an operation mode of the electric blower 18 by operating the input unit 26. The main body control portion 21 switches the operation mode in the order of strong → medium → weak → … … each time it receives the operation signal from the operation mode switching switch 26 b. The input unit 26 may include a strong operation switch (not shown), a medium operation switch (not shown), and a weak operation switch (not shown) separately instead of the operation mode changeover switch 26 b.
The dust separating and collecting part 19 is disposed on the upper surface side of the cleaner body 12 and is detachable from the cleaner body 12. The dust separating and collecting section 19 separates, collects, and accumulates dust from the dust-containing air flowing into the cleaner body 12, and sends the clean air from which the dust has been removed to the electric blower 18. The dust separation/collection section 19 may be a centrifugal separation system for centrifugally separating dust from air by utilizing the difference in mass between the dust and the air sucked by the electric vacuum cleaner 1, or a filtration separation system having a filter for filtering out dust from air containing dust.
The electric blower 18 is driven by the electric power stored in the secondary battery 13. The electric blower 18 sucks air from the suction air duct to generate a negative pressure (suction negative pressure).
The main body control unit 21 includes a storage device for storing a microprocessor and various operation programs and parameters executed by the microprocessor. The storage device stores various settings (arguments) relating to a plurality of operation modes set in advance. A plurality of operating modes are associated with the output of the electric blower 18. Different input values (an input value of the electric blower 18, a target value of the current flowing through the electric blower 18) are set in each operation mode. Each operation mode is associated with an operation input received by the input unit 26. The main body control unit 21 selects an arbitrary operation mode corresponding to an operation input to the input unit 26 from a plurality of operation modes set in advance. The main body control unit 21 reads the setting of the selected operation mode from the storage unit, and operates the electric blower 18 in accordance with the read setting of the operation mode.
The secondary battery 13 stores electric power consumed by the electric blower 18 and the main body control unit 21. The secondary battery 13 may be fixed to the main body case 17 or may be detachable from the main body case 17. In other words, the electric vacuum cleaner 1 may or may not use the plurality of secondary batteries 13 instead as appropriate. When the charging rate of the secondary battery 13 detachably attached to the electric vacuum cleaner 1 decreases, the electric vacuum cleaner 1 can continue to operate by replacing the secondary battery 13 with the charged secondary battery 13. The cleaner body 12 is provided with a charging connector 25, and the charging connector 25 is detachably connected to a charger for charging the secondary battery 13. The charging connector 25 is, for example, a receptacle. A plug of the charging device is detachably inserted into the receptacle. When the plug is inserted into the outlet, the secondary battery 13 is charged.
The extension pipe 15 and the suction port body 16 suck dust on the floor surface together with air by a negative pressure applied from the electric blower 18 and guide the dust to the cleaner main body 12.
The extension pipe 15 is fluidly connected to the suction side of the electric blower 18 via the main body connection port 23 of the main body case 17 and the dust separation/collection part 19. The extension pipe 15 has a length substantially reaching the floor surface in a state where the user holds the handle 11 of the cleaner body 12. A joint structure that is detachable from the main body connection port 23 of the cleaner main body 12 is provided at one end of the extension pipe 15. The other end of the extension pipe 15 is provided with a joint structure to which the suction port body 16 of the cleaner body 12 is detachably attached. The extension pipe 15 may be retractable or not.
The suction port body 16 is capable of running or sliding on a floor surface such as a wooden floor or a carpet, and has a suction port 27 on a bottom surface facing the floor surface in a running or sliding state. The suction port body 16 further includes: a rotatable cleaning element 28 disposed at the suction port 27 to be rotatable; and a motor 29 as a drive source for driving the rotary cleaning element 28. A joint structure that is detachable from the other end of the extension pipe 15 is provided at one end of the suction port body 16. The intake port body 16 is fluidly connected to the intake side of the electric blower 18 via an extension pipe 15.
When the main switch 26a is operated, the electric vacuum cleaner 1 causes the electric blower 18 to start. For example, when the main switch 26a is operated in a state where the electric blower 18 is stopped, the electric vacuum cleaner 1 first causes the electric blower 18 to start in the strong operation mode. When the operation mode changeover switch 26b is operated, the electric vacuum cleaner 1 changes the operation mode of the electric blower 18 to the middle operation mode, and when the operation mode changeover switch 26b is operated again, the operation mode of the electric blower 18 is changed to the weak operation mode, and the following operations are repeated in the same manner. The strong operation mode, the medium operation mode, and the weak operation mode are a plurality of operation modes set in advance. The input value of the electric blower 18 in the strong operation mode is the largest, and the input value of the electric blower 18 in the weak operation mode is the smallest. The activated electric blower 18 sucks air from the dust separation and collection part 19 to make the inside of the dust separation and collection part 19 negative pressure.
The negative pressure in the dust separating and collecting section 19 passes through the main body connection port 23, the extension pipe 15, and the suction port body 16 in this order and acts on the suction port 27. The vacuum cleaner 1 sucks dust on a surface to be cleaned together with air by negative pressure acting on the suction port 27, and cleans the surface to be cleaned. The dust separating and collecting section 19 separates and accumulates dust from the dust-containing air sucked into the electric vacuum cleaner 1, and sends the air separated from the dust-containing air to the electric blower 18. The electric blower 18 discharges air sucked from the dust separation/collection part 19 to the outside of the cleaner body 12.
Next, a detection circuit of the input received by the input unit 26 of the electric vacuum cleaner 1 will be described in detail.
Fig. 2 is a configuration diagram of an input detection circuit and a charging path connection detection circuit of the electric vacuum cleaner according to the embodiment of the present invention.
As shown in fig. 2, the electric vacuum cleaner 1 of the present embodiment includes: an input detection circuit 31 for detecting an operation input received by the input unit 26; and a charging path connection detection circuit 32 that detects whether or not the charging device of the secondary battery 13 is connected to the secondary battery 13.
The input detection circuit 31 is connected to the secondary battery 13 via a control power supply unit that outputs a control voltage of, for example, 5 volts. The control power supply unit is a voltage regulator. That is, the voltage is applied to the first circuit 35 of the input detection circuit 31 by the power stored in the secondary battery 13. The control power supply unit can also output a control voltage by the electric power supplied from the charging device via the charging connector 25. In other words, the voltage is also applied to the first circuit 35 of the input detection circuit 31 by the power supplied from the charging device via the charging connector 25.
The input detection circuit 31 includes a first pull-up resistor 36, a first protection resistor 37, and a resistor voltage divider circuit 38 including a main switch 26a and an operation mode switching switch 26 b.
The first pull-up resistor 36 is provided in the first circuit 35 connecting the control power supply unit and the resistance voltage dividing circuit 38.
The first protection resistor 37 is provided in the first circuit 35 connecting the input detection circuit 31 and the main body control unit 21.
The resistance voltage-dividing circuit 38 includes a plurality of resistors 39a and 39b connected in series to the switches 26a and 26b, respectively. The resistor 39a is provided in the first circuit 35 connecting the first pull-up resistor 36 and the main switch 26 a. The resistor 39b is provided in the first circuit 35 connecting the first pull-up resistor 36 and the operation mode changeover switch 26 b. The combination of the resistor 39a and the main switch 26a and the combination of the resistor 39b and the operation mode changeover switch 26b are connected in parallel.
The resistance voltage divider circuit 38 changes the divided voltage value of the output voltage of the control power supply unit in response to the operation of the main switch 26a and the operation mode changeover switch 26 b. The divided value of the output voltage of the control power supply unit changed by the resistance voltage dividing circuit 38 is the operation signal received by the main body control unit 21. When the first circuit 35 is energized by the switches 26a and 26b, the main body control unit 21 changes the operation state of the electric blower 18. That is, when the first circuit 35 is energized by the main switch 26a, the main body control unit 21 starts or stops the electric blower 18. When the first circuit 35 is energized by the operation mode switching switch 26b, the main body control unit 21 switches the operation mode of the electric blower 18.
The switches 26a and 26b (first switches) are provided in the first circuit 35, and switch between conduction and interruption of conduction in the first circuit 35 to receive an operation input. The switches 26a, 26b are momentary switches. The switches 26a and 26b are preferably tactile switches or membrane switches having a click feeling when pressed. The switches 26a and 26b are closed to conduct the first electric path 35 when pressed, and are opened to interrupt the conduction of the first electric path 35 when the pressing force is lost.
The charging path connection detection circuit 32 is connected to the secondary battery 13 via a control power supply unit, similarly to the input detection circuit 31. That is, the voltage is applied to the second circuit 45 of the charging path connection detection circuit 32 by the electric power stored in the secondary battery 13.
The charging path connection detection circuit 32 includes a second pull-up resistor 46, a second protection resistor 47, and a plug detection switch 48.
The second pull-up resistor 46 is provided in the second circuit 45 connecting the control power supply unit and the package detection switch 48.
The second protection resistor 47 is provided in the second circuit 45 connecting the charging path connection detection circuit 32 and the main body control unit 21.
The plug detection switch 48 (third switch) is opened to interrupt the current flow of the second circuit 45 when the charging device is connected to the secondary battery 13, and is closed to conduct the current flow of the second circuit 45 when the charging device is detached from the secondary battery 13. The plug detection switch 48 is opened when pushed in by the plug of the charging device inserted into the charging connector 25 of the secondary battery 13, and is closed when the plug of the charging device is pulled out from the charging connector 25 of the secondary battery 13.
The input detection circuit 31 includes a power supply cut-off switch 51 (second switch), and the power supply cut-off switch 51 is provided in the first circuit 35 connecting the secondary battery 13 and the switches 26a and 26b, and switches between conduction and interruption of conduction in the first circuit 35 in accordance with a predetermined event.
The power supply cutoff switch 51 is a switching element, for example, a PNP transistor. The power shutoff switch 51 is provided in the first circuit 35 connecting the control power supply unit and the first pull-up resistor 36 of the input detection circuit 31. The emitter of the power shutoff switch 51 is connected to the control power supply unit. The base of the power cut-off switch 51 is connected to the second pull-up resistor 46 of the charging path connection detection circuit 32 and the second circuit 45 of the plug detection switch 48. The collector of the power shutoff switch 51 is connected to the first pull-up resistor 36 of the input detection circuit 31.
When the plug of the charging device is removed from the charging connector 25 of the secondary battery 13, the plug detection switch 48 is closed. Then, a base current flows from the emitter to the base of the power supply cutoff switch 51, and a collector current flows from the emitter to the collector of the power supply cutoff switch 51. That is, the power shutoff switch 51 is closed, and a voltage is applied to the resistance voltage divider circuit 38 of the input detection circuit 31. In this state, the input unit 26 can detect an operation input to the switches 26a and 26 b. Therefore, the main body control unit 21 operates the electric blower 18 in accordance with the operation input to the input unit 26.
On the other hand, when the plug of the charging device is inserted into the charging connector 25 of the secondary battery 13, the plug detection switch 48 is turned off. Then, the base current of the power source cut-off switch 51 is cut off, and the collector current of the power source cut-off switch 51 is cut off. That is, the power shutoff switch 51 is turned off, and no voltage is applied to the resistance voltage divider circuit 38 of the input detection circuit 31. In this state, the input unit 26 does not detect an operation input to the switches 26a and 26 b. Thus, the main body control unit 21 invalidates the operation input to the input unit 26.
In other words, the power cutoff switch 51 switches between the conduction of the first circuit 35 and the cutoff of the conduction of electricity in accordance with the event of whether or not the plug of the charging device is inserted into the charging connector 25 of the secondary battery 13. The power supply cutoff switch 51 is opened to cut off the current supply to the first circuit 35 when the plug of the charging device is inserted into the charging connector 25 of the secondary battery 13, and is closed to supply the current to the first circuit 35 when the plug of the charging device is not inserted into the charging connector 25 of the secondary battery 13. The input detection circuit 31 thus operated can prevent the electric blower 18 from accidentally starting operation, the electric blower 18 from accidentally stopping operation, or the operation output of the electric blower 18 from accidentally changing even when the switches 26a and 26b are irregularly short-circuited regardless of the intention of the user due to electrochemical transition on the printed circuit board in the switches 26a and 26b, and the plug of the charging device is inserted into the charging connector 25 of the secondary battery 13. When the plug of the charging device is inserted into the charging connector 25 of the secondary battery 13, the secondary battery 13 is in a state of being charged or in a state of waiting after completion of charging.
Next, another example of the input detection circuit 31 of the electric vacuum cleaner 1 according to the embodiment of the present invention will be described. In the input detection circuit 31A described in another example, the same components as those of the input detection circuit 31 are denoted by the same reference numerals, and redundant description thereof is omitted.
Fig. 3 is a configuration diagram of another example of an input detection circuit of an electric vacuum cleaner according to an embodiment of the present invention.
As shown in fig. 3, the power supply cutoff switch 51 of the input detection circuit 31A according to the present embodiment switches between the energization of the first circuit 35 and the cutoff of the energization in accordance with the event of whether or not the charging connector 25 of the secondary battery 13 is inserted into the plug of the charging device, and the charging voltage is applied to the secondary battery 13.
The secondary battery 13 has a charging circuit 61 that transmits a signal notifying application of a charging voltage to the main body control unit 21 when the charging voltage is applied from the charging device. When the charging voltage is no longer applied from the charging device, the charging circuit 61 stops transmitting the signal notifying the application of the charging voltage to the main body control section 21. The main body control unit 21 determines whether or not the charging voltage is applied to the secondary battery 13 based on the presence or absence of the signal.
The base of the power cutoff switch 51 is connected to the body control unit 21. The main body control unit 21 turns on/off the base current based on the presence/absence of application of the charging voltage of the secondary battery 13. The main body control unit 21 is connected to a charging circuit 61, and the charging circuit 61 can detect whether or not charging of the secondary battery 13 is completed by detecting the charging voltage of the secondary battery 13.
The main body control unit 21 turns off the base current when the secondary battery 13 is being charged and the charging voltage is applied to the secondary battery 13, fully charges the secondary battery 13, and causes the base current to flow when the charging voltage is not applied to the secondary battery 13. In other words, the main body control unit 21 opens the power supply cutoff switch 51 to cut off the current flow through the first circuit 35 connecting the secondary battery 13 and the switches 26a and 26b when the completion of charging of the secondary battery 13 is not detected, and closes the power supply cutoff switch 51 to current flow through the first circuit 35 connecting the secondary battery 13 and the switches 26a and 26b when the completion of charging of the secondary battery 13 is detected.
Therefore, when the secondary battery 13 is fully charged and no charging voltage is applied to the secondary battery 13, a base current flows from the emitter to the base of the power supply cutoff switch 51, and a collector current flows from the emitter to the collector of the power supply cutoff switch 51. That is, the power shutoff switch 51 is closed, and a voltage is applied to the resistance voltage divider circuit 38 of the input detection circuit 31A. In this state, the input unit 26 can detect an operation input to the switches 26a and 26 b. Therefore, the main body control unit 21 operates the electric blower 18 in accordance with the operation input to the input unit 26.
On the other hand, when the secondary battery 13 is being charged and the charging voltage is applied to the secondary battery 13, the base current of the power supply cut-off switch 51 is cut off, and the collector current of the power supply cut-off switch 51 is cut off. That is, the power shutoff switch 51 is turned off, and no voltage is applied to the resistance voltage divider circuit 38 of the input detection circuit 31A. In this state, the input unit 26 does not detect an operation input to the switches 26a and 26 b. Thus, the main body control unit 21 invalidates the operation input to the input unit 26.
In other words, the power shutoff switch 51 switches the conduction of the first circuit 35 and the shutoff of the conduction of the current in accordance with the event of whether or not the secondary battery 13 is being charged. The power supply cutoff switch 51 is opened to cut off the conduction of the first electric circuit 35 when the secondary battery 13 is being charged, and is closed to conduct the first electric circuit 35 when the secondary battery 13 is not being charged. The input detection circuit 31A thus operated can prevent the electric blower 18 from accidentally starting operation, the electric blower 18 from accidentally stopping operation, or the operation output of the electric blower 18 from accidentally changing even when the secondary battery 13 is being charged in a case where electrochemical transition occurs in the printed circuit board in which the switches 26a and 26b are present and the switches 26a and 26b are irregularly short-circuited without depending on the intention of the user.
The "predetermined event" for opening and closing the power shutoff switch 51 is not limited to the first event of whether or not the plug of the charging device is inserted into the charging connector 25 of the secondary battery 13 and the second event of whether or not the charging voltage is applied to the secondary battery 13. For example, the "predetermined event" may be an event related to the use state of the electric vacuum cleaner 1, such as a third event of whether the electric vacuum cleaner 1 is stored in the storage table or a fourth event of whether the handle 11 of the cleaner body 12 is gripped by the user.
When the third event is applied to an event of opening and closing the power shutoff switch 51, the electric vacuum cleaner 1 preferably includes, for example, a sensor or a switch capable of detecting that the cleaner body 12 is connected to the storage base.
When the cleaner body 12 is detached from the storage base, a base current flows from the emitter to the base of the power cut-off switch 51, and a collector current flows from the emitter to the collector of the power cut-off switch 51. That is, the power shutoff switch 51 is closed, and a voltage is applied to the resistance voltage divider circuit 38 of the input detection circuits 31 and 31A. In this state, the input unit 26 can detect an operation input to the switches 26a and 26 b. Therefore, the main body control unit 21 operates the electric blower 18 in accordance with the operation input to the input unit 26.
On the other hand, when the cleaner body 12 is stored in the storage base, the base current of the power cut-off switch 51 is cut off, and the collector current of the power cut-off switch 51 is cut off. That is, the power shutoff switch 51 is turned off, and no voltage is applied to the resistance voltage divider circuit 38 of the input detection circuit 31A. In this state, the input unit 26 does not detect an operation input to the switches 26a and 26 b. Thus, the main body control unit 21 invalidates the operation input to the input unit 26.
When the fourth event is applied to an event of turning on/off the power shutoff switch 51, the electric vacuum cleaner 1 preferably includes, for example, a sensor or a switch capable of detecting whether or not the handle 11 is being gripped.
When the handle 11 is being held, a base current flows from the emitter to the base of the power cut-off switch 51, and a collector current flows from the emitter to the collector of the power cut-off switch 51. That is, the power shutoff switch 51 is closed, and a voltage is applied to the resistance voltage divider circuit 38 of the input detection circuits 31 and 31A. In this state, the input unit 26 can detect an operation input to the switches 26a and 26 b. Therefore, the main body control unit 21 operates the electric blower 18 in accordance with the operation input to the input unit 26.
On the other hand, when the handle 11 is not held, the base current of the power cut-off switch 51 is cut off, and the collector current of the power cut-off switch 51 is cut off. That is, the power shutoff switch 51 is turned off, and no voltage is applied to the resistance voltage divider circuit 38 of the input detection circuit 31A. In this state, the input unit 26 does not detect an operation input to the switches 26a and 26 b. Thus, the main body control unit 21 invalidates the operation input to the input unit 26.
The switches 26a and 26b, to which the state of voltage application changes in response to a "predetermined event", may include at least one of the switches 26a and 26b, using the power cutoff switch 51. Further, it preferably includes at least a main switch 26 a.
The "predetermined event" for turning on/off the power shutoff switch 51 may include at least one of the first event to the fourth event. The "predetermined event" for turning on and off the power shutoff switch 51 may be a condition established by a logical product obtained by combining a plurality of events and a condition established by a logical sum obtained by combining a plurality of events.
As described above, the electric vacuum cleaner 1 of the present embodiment includes the power shutoff switch 51, and the power shutoff switch 51 is provided in the first electric circuit 35 connecting the secondary battery 13 and the switches 26a and 26b, and switches between the energization and the interruption of the energization of the first electric circuit 35 in accordance with a predetermined event. Therefore, the electric vacuum cleaner 1 can switch between validation and invalidation of the operation input to the switches 26a and 26b depending on whether or not a predetermined event has occurred. Therefore, even when the insulation resistance value is reduced by electrochemical migration on the printed circuit board in the switches 26a and 26b, the electric vacuum cleaner 1 can suppress a reduction in convenience caused by an accidental start of operation of the electric blower, an accidental stop of operation of the electric blower, or an accidental change in the operation output of the electric blower.
The electric vacuum cleaner 1 of the present embodiment includes a predetermined event during charging of the secondary battery 13 and during standby after charging of the secondary battery 13 is completed. Therefore, even when the main switch 26a is accidentally short-circuited due to, for example, electrochemical transition, the electric cleaner 1 does not waste electric power of the secondary battery 13 during charging of the secondary battery 13 or during standby after completion of charging.
The electric vacuum cleaner 1 of the present embodiment includes tactile switches as the switches 26a and 26 b. Since the tactile switch generally incorporates a printed circuit board, irregular short circuits due to electrochemical migration are likely to be conspicuous. However, since the electric vacuum cleaner 1 can appropriately switch between activation and deactivation of the switches 26a and 26b in accordance with a predetermined event, it is easy to reduce the cost by using an inexpensive tactile switch having insufficient electromigration resistance.
The electric vacuum cleaner 1 of the present embodiment is also provided with input detection circuits 31 and 31A to which a voltage is applied by the power supplied from the charging device through the charging connector 25. Therefore, even when the charging rate of the secondary battery 13 during charging is insufficient, the electric vacuum cleaner 1 can reliably switch the activation and deactivation of the switches 26a and 26b in response to a predetermined event.
The electric vacuum cleaner 1 of the present embodiment switches between activation and deactivation of the main switch 26a in accordance with a predetermined event. Therefore, even when the main switch 26a is accidentally short-circuited due to electrochemical transition, the electric vacuum cleaner 1 does not waste electric power of the secondary battery 13 during charging of the secondary battery 13 or during standby after completion of charging.
In addition, the electric vacuum cleaner 1 of the present embodiment switches between activation and deactivation of the main switch 26a in accordance with a predetermined event. Therefore, even when the operation mode changeover switch 26b is accidentally short-circuited due to the electrochemical transition, the electric vacuum cleaner 1 can easily prevent the previous operation mode selected by the user from being accidentally switched when the electric vacuum cleaner 1 is operated again.
In the electric vacuum cleaner 1 of the present embodiment, when the plug detection switch 48 is closed, the power supply cut-off switch 51 is closed to energize the first circuit 35 connecting the secondary battery 13 and the switches 26a and 26b, and when the plug detection switch 48 is opened, the power supply cut-off switch 51 is opened to interrupt energization of the first circuit 35 connecting the secondary battery 13 and the switches 26a and 26 b. Therefore, the electric vacuum cleaner 1 can easily detect the "predetermined event" by inserting and removing the plug of the charging device, and reliably switch the activation and deactivation of the switches 26a and 26 b.
In the electric vacuum cleaner 1 of the present embodiment, when the completion of charging of the secondary battery 13 is detected, the power supply cutoff switch 51 is closed to energize the first circuit 35 that connects the secondary battery 13 and the switches 26a and 26b, and when the completion of charging of the secondary battery 13 is not detected, the power supply cutoff switch 51 is opened to interrupt the energization of the first circuit 35 that connects the secondary battery 13 and the switches 26a and 26 b. Therefore, the electric vacuum cleaner 1 can easily detect the "predetermined event" by the charging voltage of the secondary battery 13, and reliably switch the activation and deactivation of the switches 26a and 26 b.
Therefore, according to the electric vacuum cleaner 1 of the present embodiment, even when the insulation resistance value is reduced by electrochemical migration on the printed circuit board in the switches 26a and 26b, the reduction in convenience can be suppressed.
Although several embodiments of the present invention have been described above, these embodiments are provided as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in other various ways, and various omissions, substitutions, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalent scope thereof.
Claims (8)
1. An electric vacuum cleaner is provided with:
a suction air passage;
a secondary battery;
an electric blower driven by the electric power stored in the secondary battery and generating a suction negative pressure in the suction air duct;
a circuit to which a voltage is applied by the power stored in the secondary battery;
a first switch provided in the circuit, switching between energization and interruption of energization of the circuit, and accepting an operation input;
a second switch provided in the electric circuit connecting the secondary battery and the first switch, the second switch switching between conduction and interruption of conduction in the electric circuit in accordance with a predetermined event; and
a control unit that changes an operation state of the electric blower when the first switch energizes the circuit;
the specified event is at least one of the following events: whether a plug of a charging device is inserted into a charging connector of the secondary battery, whether a charging voltage is applied to the secondary battery, whether the electric vacuum cleaner is stored in a storage table, and whether a handle of the electric vacuum cleaner is held by a user.
2. The electric vacuum cleaner according to claim 1,
the predetermined event includes charging of the secondary battery and waiting after charging of the secondary battery is completed,
the second switch is turned off during charging of the secondary battery to cut off the current supply to the circuit connecting the secondary battery and the first switch, and is turned off during standby after completion of charging of the secondary battery to cut off the current supply to the circuit connecting the secondary battery and the first switch.
3. The electric vacuum cleaner according to claim 1 or 2,
the first switch is a tactile switch.
4. The electric vacuum cleaner according to any one of claims 1 to 3,
the electric vacuum cleaner is provided with a connector which is detachably connected with a charging device for charging the secondary battery,
the circuit is also applied with a voltage by the power supplied from the charging device via the connector.
5. The electric vacuum cleaner according to any one of claims 1 to 4,
the first switch receives an operation start operation and an operation stop operation of the electric blower.
6. The electric vacuum cleaner according to any one of claims 1 to 5,
the first switch receives a switching operation of an operation mode of the electric blower.
7. The electric vacuum cleaner according to any one of claims 1 to 3, 5, and 6,
the electric vacuum cleaner is provided with:
a connector for detachably connecting a charging device for charging the secondary battery; and
a third switch that is open when the charging device is connected to the connector and is closed when the charging device is detached from the connector,
when the third switch is closed, the second switch is closed to energize the circuit connecting the secondary battery and the first switch, and when the third switch is open, the second switch is open to interrupt energization of the circuit connecting the secondary battery and the first switch.
8. The electric vacuum cleaner according to any one of claims 1 to 3, 5, and 6,
the electric vacuum cleaner includes a connector to which a charging device for charging the secondary battery is detachably connected,
when the completion of charging of the secondary battery is detected, the second switch is closed to energize the circuit connecting the secondary battery and the first switch, and when the completion of charging of the secondary battery is not detected, the second switch is opened to interrupt the energization of the circuit connecting the secondary battery and the first switch.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020043904A JP7466338B2 (en) | 2020-03-13 | 2020-03-13 | Vacuum cleaner |
| JP2020-043904 | 2020-03-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113384184A CN113384184A (en) | 2021-09-14 |
| CN113384184B true CN113384184B (en) | 2022-08-02 |
Family
ID=77616670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110028696.9A Active CN113384184B (en) | 2020-03-13 | 2021-01-11 | Electric vacuum cleaner |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7466338B2 (en) |
| CN (1) | CN113384184B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002034877A (en) * | 2000-07-27 | 2002-02-05 | Sanyo Electric Co Ltd | Charging type electric vacuum cleaner |
| CN1386471A (en) * | 2001-05-23 | 2002-12-25 | 东芝泰格有限公司 | Electric dust-remover |
| CN101119020A (en) * | 2007-09-12 | 2008-02-06 | 中兴通讯股份有限公司 | Terminal equipment charging overvoltage protective device and method |
| CN105531901A (en) * | 2014-02-28 | 2016-04-27 | 夏普株式会社 | Battery-driven electronic device |
| CN110049704A (en) * | 2017-06-22 | 2019-07-23 | 东芝生活电器株式会社 | Electric dust collector |
| CN110573052A (en) * | 2017-06-23 | 2019-12-13 | 东芝生活电器株式会社 | Electric dust suction device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007268081A (en) | 2006-03-31 | 2007-10-18 | Toshiba Corp | Vacuum cleaner |
| JP6812194B2 (en) | 2016-10-11 | 2021-01-13 | 株式会社マキタ | Electric work machine |
-
2020
- 2020-03-13 JP JP2020043904A patent/JP7466338B2/en active Active
-
2021
- 2021-01-11 CN CN202110028696.9A patent/CN113384184B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002034877A (en) * | 2000-07-27 | 2002-02-05 | Sanyo Electric Co Ltd | Charging type electric vacuum cleaner |
| CN1386471A (en) * | 2001-05-23 | 2002-12-25 | 东芝泰格有限公司 | Electric dust-remover |
| CN101119020A (en) * | 2007-09-12 | 2008-02-06 | 中兴通讯股份有限公司 | Terminal equipment charging overvoltage protective device and method |
| CN105531901A (en) * | 2014-02-28 | 2016-04-27 | 夏普株式会社 | Battery-driven electronic device |
| CN110049704A (en) * | 2017-06-22 | 2019-07-23 | 东芝生活电器株式会社 | Electric dust collector |
| CN110573052A (en) * | 2017-06-23 | 2019-12-13 | 东芝生活电器株式会社 | Electric dust suction device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2021142205A (en) | 2021-09-24 |
| JP7466338B2 (en) | 2024-04-12 |
| CN113384184A (en) | 2021-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5937418B2 (en) | Fluid device | |
| EP2113182A1 (en) | Vacuum cleaner control system | |
| WO2014112399A1 (en) | Cell-driven vacuum cleaner | |
| JP6442306B2 (en) | Fluid device | |
| JP6492282B2 (en) | Electric vacuum cleaner | |
| CN113384184B (en) | Electric vacuum cleaner | |
| JP4920779B2 (en) | Vacuum cleaner | |
| CN109640774B (en) | Electric vacuum cleaner | |
| JP6628300B2 (en) | Electric vacuum cleaner | |
| JP4967593B2 (en) | Electric vacuum cleaner | |
| KR20220071811A (en) | Cleaning device having vacuum cleaner and docking station and control method thereof | |
| JP7226965B2 (en) | vacuum cleaner | |
| JP6680575B2 (en) | Electric vacuum cleaner | |
| JP6711089B2 (en) | Vacuum cleaner | |
| JP6690975B2 (en) | Vacuum cleaner | |
| JP2006122463A (en) | Vacuum cleaner | |
| JP2004121583A (en) | Vacuum cleaner | |
| WO2023021733A1 (en) | Collection device for collecting dust from vacuum cleaner, and vacuum cleaner connectable to collection device | |
| CN111616644A (en) | Electric vacuum cleaner | |
| CN115702759A (en) | Electric vacuum cleaner | |
| CN118076275A (en) | Recovery device for recovering dust from dust collector and dust collector connected with recovery device | |
| JP5151860B2 (en) | Electric vacuum cleaner | |
| JP2003219997A (en) | Electric cleaner | |
| KR100352330B1 (en) | Over charge/over discharge portection circuit for rechargerble battery of vaccum cleaner | |
| JP2006141596A (en) | Chargeable vacuum cleaner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |