JP3341866B2 - Electric vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extension pipe connected to a suction port by engaging a hook provided on the extension pipe or suction port with an engaging portion provided on the vacuum cleaner body. The present invention relates to a vacuum cleaner that can be leaned against a main body.

[0002]

2. Description of the Related Art Conventionally, a vacuum cleaner body provided with an electric blower, a hose connected to the vacuum cleaner body,
An extension pipe connected to the hose, a suction port body connected to a tip of the extension pipe, a rotary brush provided on the suction port body, and a rotary brush provided on a hand operation unit of the hose; 2. Description of the Related Art An electric vacuum cleaner having a setting switch for setting on / off of a blower and a driving state thereof has been known.

In this type of vacuum cleaner, a hook is provided on the extension tube, and an engaging portion with which the hook is provided is provided in the vacuum cleaner main body. In some cases, the extension pipe connected to the suction port body can be leaned against the main body of the vacuum cleaner by engaging with the engaging portion.

[0004]

By the way, in such a vacuum cleaner, an extension pipe connected to the suction opening body can be leaned against the main body of the vacuum cleaner when cleaning is temporarily stopped. It is necessary to stop the operation of the electric blower and the rotating brush by operating the hand operation unit for safety and prevention of wasteful power consumption. There was a problem that the rotating brush had to be operated, which was troublesome.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to stop the operation of an electric blower or the like without temporarily operating a hand operation unit when cleaning is temporarily stopped. It is to provide a vacuum cleaner which can restart the operation.

[0006]

SUMMARY OF THE INVENTION The present invention provides a vacuum cleaner body provided with an electric blower, a hose connected to the vacuum cleaner body, an extension pipe connected to the hose, and an extension pipe. A suction port body connected to the distal end, a setting switch provided on the hand operation unit of the hose to set the power of the electric blower is provided, and a hook is provided on the extension pipe or the suction port body. In the vacuum cleaner, the extension pipe connected to the suction opening body can be leaned against the vacuum cleaner main body by being engaged with the engaging portion provided in the vacuum cleaner main body, wherein the hook is attached to the engaging portion. a detection switch for detecting that the engaged, the detection Sui
Tie that starts timing when the switch detects hook engagement.
And Ma, when the detection switch detects the engagement of the hook
Memory for storing a power setting state of the electric blower
When the detection switch detects engagement of the hook, the operation of the electric blower is stopped, and the time counted by the timer is measured.
Before the predetermined time is reached, the detection switch
When the cancellation of the power is detected, the power stored in the memory is detected.
Stop / start to start the electric blower in the setting state of
Means, and after the time counted by the timer has passed a predetermined time.
The detection switch detects that the hook has been disengaged.
A prohibition unit for prohibiting the electric blower from being started by the stop / start unit .

[0007]

[Function] When the detection switch detects the hook engagement,
The operation of the dynamic blower is stopped, and the timer
Before the detection switch detects that the hook has been disengaged.
When it knows, the motor is driven by the power setting stored in the memory.
The blower is started, and the time measured by the timer elapses a predetermined time.
Detection switch detects hook disengagement after
And the start of the electric blower by the stop / start means is prohibited.
You.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vacuum cleaner according to the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 10 denotes a vacuum cleaner main body.
Inside the main body 10, an electric blower 11 and a dust filter 12 are provided.
Etc. are provided. Reference numeral 13 denotes a hose connected to the cleaner body 10, reference numeral 14 denotes a suction port connected to the hose 13 via an extension pipe 15, and the suction port 14 has a rotary brush (not shown) and a brush for rotating the rotary brush. Motor 1
6 and the like are provided.

The extension pipe 15 is provided with a hook 17. The hook 17 is engaged with an engagement hole (engaging portion) 18 provided at a rear portion of the cleaner body 10, so that the suction port body 14 is engaged. The connected extension tube 15 can be leaned against the cleaner body 10. Reference numeral 19 denotes a detection switch for detecting that the hook 17 has been engaged with the engagement hole 18.

This detection switch 19 is shown in FIGS.
As shown in FIG. 3, the contact switch 19a has a contact piece 19a projecting upward from the bottom 18a of the engagement hole 18. When the contact piece 19a is in the state shown in FIGS. 2 and 3, the detection switch 19 is off. When the hook 17 is engaged with the engagement hole 18, the contact piece 19a moves downward as shown in FIG.
Turns on.

The hose 13 is provided with a hand-operated part 20. As shown in FIG.
An off switch (setting switch) 21 for turning off the electric blower 11 from the hand side, an automatic switch (setting switch) 22 for automatically setting the power of the electric blower 11, and a strong and weak each time the power of the electric blower 11 is pressed. Power switch (setting switch) 23 that is set by switching alternately
And a brush switch (setting switch) 24 for operating the brush motor 16. 25 is a handle.

FIG. 6 is a block diagram showing the configuration of a control system provided in the vacuum cleaner main body 10. Reference numeral 31 denotes a triac that controls the current flowing through the electric blower 11, and 32 denotes the phase of the current flowing through the brush motor 16. A triac 40 for control is a control device for controlling the operation of each triac 31, 32, and E is an AC power supply.

The control device 40 is composed of a microcomputer or the like, and switches on and off the electric blower 11 and the brush motor 16 via the triacs 31 and 32 according to the operation of the switches 21 to 24 and the detection state of the detection switch 19. It controls power. Then, the control device 40 stops and activates the electric blower 11 to stop or start.
It has a function as a starting means and a function as a prohibiting means for prohibiting the start of the electric blower 11. Further, the control device 40 includes a current detecting means for reading a current input to the input terminal Q1. 6, R1 to R4 are resistors connected in series to the switches 21 to 24, respectively, and R5 is a resistor for detecting the connection of the hose 13.

When the hose 13 is connected, the control device 40
7 is set so that the current flowing through the input terminal Q1 becomes I1 as shown in FIG. 7. When the off switch 21 is pressed, a pulse P1 having a current of I2 is input to the input terminal Q1, and when the automatic switch 22 is pressed, the input terminal Q1 is input. A pulse P2 with a current of I3 is input to Q1, a pulse P3 of a current of I4 is input to the input terminal Q1 when the strength switch 23 is pressed, and a pulse P4 of a current I5 is input to the input terminal Q1 when the brush switch 23 is pressed. It is set to be. Also, I1 <I2 <I3 <I4 <I
Set to 5.

Next, the operation of the electric vacuum cleaner of the above embodiment will be described with reference to the flow charts shown in FIGS.

In step 1, the current value flowing through the input terminal Q1 is read by the current detecting means in the control device 40. In step 2, the hose 13 is connected to the vacuum cleaner main body 10 from the current value read by the current detecting means. It is determined whether it has been performed. If no, proceed to step 3 and the electric blower 1
If 1 is driven, the drive is stopped after one second and the process returns to step 1.

If the determination in step 2 is yes, the process proceeds to step 4, where it is determined whether or not the pulse P1 has been input to the input terminal Q1. That is, it is determined whether or not the off switch 21 has been pressed. If the determination is yes, the drive of the electric blower 11 is stopped in step 5 and the process returns to step 1.

If the determination in step 4 is NO, the process proceeds to step 6, where it is determined whether or not the pulse P2 has been input to the input terminal Q1. That is, it is determined whether or not the automatic switch 22 has been pressed. If the determination is affirmative, the process proceeds to step 7, where the power of the electric blower 11 is automatically set and driven. Then, the process returns to step 1.

If the determination in step 6 is NO, the process proceeds to step 8, where it is determined whether or not the pulse P3 has been input to the input terminal Q1. That is, it is determined whether or not the power switch 23 has been pressed. If the determination is yes, the process proceeds to step 9, and the electric blower 11 is driven with its power set to high or low. And step 1
Return to

Here, as shown in FIG. 7, when the strength switch 23 is pressed, the electric blower 11 is driven with the power set to weak. Then, when the strength switch 23 is pressed thereafter, the power is set to strong and the drive is performed.

If the determination in step 8 is NO, the process proceeds to step 10, where the pulse P4 is input to the input terminal Q1.
Is determined. That is, it is determined whether or not the brush switch 24 has been pressed. If yes, the process proceeds to step 11, where the brush motor 16 is driven to rotate the rotating brush. Then, the process returns to step 1.

If the determination in step 10 is NO, the process proceeds to a subroutine of step 12 for determining whether or not to temporarily stop.

FIG. 9 shows a subroutine for determining the presence or absence of a pause. In step 20 in FIG.
Is turned on. That is, the extension pipe 15
It is determined whether the hook 17 has been engaged with the engagement hole 18 and the extension tube 15 has been leaned against and the cleaning has been temporarily suspended.
If the determination is yes, the process proceeds to step 21.

In step 21, it is determined whether or not the time t of an internal timer (not shown) provided in the control device 40 is t> 0. Here, since the internal timer has not yet been counted, it is determined to be no and the process proceeds to step 22.

In step 22, the current position, that is, the power setting state of the electric blower 11 and the brush motor 16
Is turned on / off by a memory (not shown) of the controller 40.
Is stored.

In step 23, the internal timer discloses the time measurement from t = 0. In step 24, the driving of the electric blower 11 and the brush motor 16 is stopped. That is, when the hook 17 of the extension tube 15 is engaged with the engagement hole 18 when the cleaning is temporarily stopped, the driving of the electric blower 11 and the brush motor 16 is automatically stopped.

At step 25, it is determined whether or not the time t is less than 30 minutes, that is, whether or not the cleaning has not been interrupted for more than 30 minutes.

Then, in step 21, it is determined whether or not the counted time t is greater than "0". In this case, since the internal timer has already been timed, it is determined to be YES and the process proceeds to step S25. Then, the operations of steps 20, 21, and 25 are repeated until the clock time t has elapsed 30 minutes. When the clock time t has elapsed 30 minutes, that is, when the cleaning has been interrupted for 30 minutes or more, the operation proceeds from step 25 to step 26. The process proceeds to clear the position stored in the memory and returns to step 20.

When the hook 17 of the extension tube 15 is pulled out of the engagement hole 18 in order to resume cleaning, the detection switch 19 is turned off, and the determination at step 20 is NO, and the determination at step 27 is NO.
Proceed to. In step 27, it is determined whether the detection switch 19 has been turned off from on. That is, it is determined whether or not the hook 17 has not been engaged with the engagement hole 18.

If the hook 17 of the extension tube 15 has not been engaged with the engagement hole 18, the determination is no at step 20, the determination is no at step 27, and the process returns to step 1.

Here, since the hook 17 of the extension tube 15 is engaged with the engaging hole 18 and the hook 17 is pulled out of the engaging hole 18, it is determined to be YES in step 27 and the process proceeds to step 28. In step 28, the counted time t of the internal timer is reset to "0".

In step 29, it is determined whether or not the position is stored in the internal memory. If no, the process returns to step 1, and if yes, the process proceeds to step 30.

If the hook 17 of the extension tube 15 is pulled out of the engagement hole 18 when 30 minutes or more have elapsed since the start of the timing, the position stored in the internal memory is cleared at step 26. Therefore, in the step 29, it is determined to be no and the process returns to the step 1.

That is, when 30 minutes or more have elapsed since the start of the time measurement, in other words, when cleaning has been interrupted for 30 minutes or more, the switch of the hand operation unit 20 can be operated even if the hook 17 is removed from the engagement hole 18. The electric blower 11 and the brush motor 16 are not driven unless the operation of 21 to 24 is performed.

If the hook 17 of the extension tube 15 is pulled out of the engagement hole 18 within 30 minutes after the start of the clocking, that is, before the lapse of 30 minutes of the cleaning, the position is stored in the internal memory. Therefore, the determination in step 29 is YES.

In step 30, the position stored in the internal memory is read, and the electric blower 11 and the brush motor 16 are driven at that position.

That is, if the hook 17 of the extension pipe 15 is pulled out of the engagement hole 18 before the lapse of 30 minutes, the electric blower 1 is automatically turned on.
Since the brush motor 1 and the brush motor 16 are driven at the original positions, the cleaning can be restarted without operating the switches 21 to 24 of the hand operation unit 20, thereby improving the operability.

When 30 minutes or more have passed since the extension tube 15 was set up, the electric blower 11 and the brush motor 16 are operated even if the hook 17 is removed from the engagement hole 18 unless the switches 21 to 24 of the hand operation unit 20 are operated. Since it is not driven, if cleaning is temporarily interrupted and it is forgotten, safety will be ensured.

When the detection switch 19 is off, that is, when the hook 17 is not engaged with the engagement hole 18, the voltage Va is applied to the input terminal Q2 of the control device 40 as shown in FIG. , Is set so that the potential becomes zero when the engagement is released and turned on. The control device 40 determines whether the detection switch 19 is on or off based on the potential of the input terminal Q2.

However, when the hook 17 is removed from the engagement hole 18, the detection switch 19 may cause chattering as shown in FIG. For this reason, there is a possibility that the control device 40 malfunctions. In order to prevent the malfunction due to the chattering, the voltage of the input terminal Q2 is read after x seconds (100 ms) have elapsed from the fall of the voltage.

In the above embodiment, the hook 17 is connected to the extension pipe 15
However, it may be provided in the connection pipe 14a of the suction port body 14.

[0043]

As described above, according to the present invention, the hook is engaged with the engaging portion, and the extension tube is leaned.
Then, the detection switch detects the engagement of the hook and
The operation of the machine is stopped. And when cleaning again,
If the time measured by the timer is the predetermined time, the hook is
If it comes out, it will be electrically driven with the power setting stored in the memory
The blower is started. For this reason, the setting operation section of the hand operation section
Does not need to be operated, and operability is improved.

When a predetermined time or more has elapsed since the extension tube was set up, that is, the time measured by the timer is equal to or longer than the predetermined time.
After the elapse of, the electric blower is started by the stop / start means.
Because it is banned , safety is ensured if cleaning is suspended and forgotten. That is, operation by automatic return
It is possible to achieve both workability and safety.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an appearance of a vacuum cleaner according to the present invention.

FIG. 2 is a perspective view showing a detection switch and an engagement hole.

FIG. 3 is an explanatory diagram showing a detection switch and an engagement hole.

FIG. 4 is an explanatory view showing a state in which a hook is engaged with an engagement hole.

FIG. 5 is a perspective view showing a hand operation unit of the hose.

FIG. 6 is a block diagram showing a configuration of a control system.

FIG. 7 is a time chart showing a pulse signal obtained by operating each switch.

FIG. 8 is a flowchart showing the operation of the control device.

FIG. 9 is a flowchart showing the operation of the control device.

FIG. 10 is an explanatory diagram showing a voltage output by a detection switch.

FIG. 11 is an explanatory diagram showing chattering.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Vacuum cleaner main body 11 Electric blower 13 Hose 14 Suction port body 15 Extension pipe 19 Detection switch 21 ON / OFF switch (Setting switch) 22 Automatic switch (Setting switch) 23 Strength switch (Setting switch) 24 Brush switch (Setting switch) 40 control device

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-160391 (JP, A) JP-A-3-168117 (JP, A) JP-A-6-142022 (JP, A) 95651 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47L 9/28 A47L 9/00 105

Claims (1)

(57) [Claims] 1. A vacuum cleaner main body provided with an electric blower, a hose connected to the vacuum cleaner main body, an extension pipe connected to the hose, and a suction port connected to a tip of the extension pipe. And a setting switch provided on the hand operation unit of the hose to set the power of the electric blower, a hook provided on the extension pipe or the suction port body, and a hook provided on the vacuum cleaner main body. In an electric vacuum cleaner in which an extension pipe connected to a suction opening body can be set up against an electric vacuum cleaner main body by engaging with a joining portion, detecting that the hook is engaged with the engaging portion. A detection switch and a timer when the detection switch detects engagement of the hook.
A timer to be started and the electric power when the detection switch detects the engagement of the hook.
A memory for storing a setting state of the power of the dynamic blower, the operation of the electric blower is stopped when the detection switch detects the engagement of the hook, and the time measured by the timer is set to a predetermined value.
Before the fixed time is reached, the detection switch
When the release is detected, the power stored in the memory is
Stop / start means for starting the electric blower in a set state
And after the time counted by the timer elapses a predetermined time,
When the detection switch detects that the hook has been
A vacuum cleaner comprising prohibiting means for prohibiting activation of the electric blower by the stop / start means .