JPH0910149A - Vacuum cleaner - Google Patents

Abstract

PURPOSE: To provide a vacuum cleaner protecting a wall, furniture and a suction port main body by simple constitution. CONSTITUTION: The electromotive blower 11 arranged in a vacuum cleaner main body 1 and an electrometer 12 arranged in a suction port main body are connected to a commercial AC power source E through triacs Tr1, Tr2 and a control means 25 is connected to the triacs Tr1, Tr2. The operation means 3b of this side operation part of a hose, the impact switch of an impact detection means 7 arranged to an extension pipe and the display means 6b arranged in the suction port main body are connected to the control means 25. The impact detection means 7 outputs voltage different in value correspondingly to the clearance of the extension pipe by the detection element of the impact switch detecting the clearance of the connection part of the extension pipe. When the suction port main body collides against a wall or furniture during cleaning, the control means 25 lowers the input of the electromotive blower 11 to inform that an impact is applied to a worker by the enhancement of operability and the lowering of a drive sound.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner which detects an impact applied to a suction port main body during cleaning and controls driving of an electric blower.

[0002]

2. Description of the Related Art Heretofore, various electric vacuum cleaners having a suction port body in which an electric motor for rotating a rotary blade as a rotating body is arranged are known.

In these conventional electric vacuum cleaners, the main body of the electric vacuum cleaner is connected to the main body of the suction port through a hose, and various operation buttons provided on a manual operation portion of the hose are operated to provide the main body of the electric vacuum cleaner. In addition to driving the electric blower, the electric motor installed in the suction port body is driven to rotate the rotating blade, and the suction blade body is driven on the floor surface to rotate while rotating to rotate the rotating blade to scrape out dust and drive it. A structure is adopted in which dust is sucked together with air by a negative pressure of a blower to perform cleaning.

[0004]

However, in the above conventional vacuum cleaner, when the wall surface or the floor surface of furniture is cleaned, the suction port body collides with the wall or furniture, and the wall, furniture, or suction port body. Alternatively, there is a problem that the circuit board or the like in the suction port body may be damaged. Normally, the furniture is cleaned so as not to give a large impact to the furniture as per the user's sense, but the above-mentioned problem occurs because this sense varies from person to person. In particular, since the user does not recognize the fixing strength of the element fixed on the circuit board in the suction port body, the circuit board is likely to be damaged.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an electric vacuum cleaner which protects a wall, furniture, and a main body of a suction port with a simple structure.

[0006]

An electric vacuum cleaner according to claim 1, wherein the electric vacuum cleaner body has a built-in electric blower, and a suction port main body having an intake port communicating with the electric blower through an air passage. And a shock detecting means for detecting a shock applied to the suction port body, and a notifying means for notifying that the shock detecting means has detected a shock applied to the suction port body and having a predetermined value or more. .

According to a second aspect of the present invention, there is provided the electric vacuum cleaner according to the first aspect, wherein the notifying means gives a notification by changing an input of the electric blower.

[0008]

In the electric vacuum cleaner according to the first aspect of the present invention, when the impact detection unit applies a shock of a predetermined value or more to the suction port main body, the notification unit notifies the user that the suction port main body or furniture is likely to be damaged. To do.

According to the second aspect of the present invention, there is provided the vacuum cleaner according to the first aspect.
In the electric vacuum cleaner described above, the notification means notifies by changing the input of the electric blower, that is, the change in operability due to the suction force of the suction port body against the floor surface and the change in the driving sound of the electric blower. Therefore, the electric blower, which is an indispensable constituent part of the electric vacuum cleaner, is used without providing a dedicated notification means, so that the structure can be simplified.

[0010]

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

In FIG. 2, reference numeral 1 is a vacuum cleaner body, and the vacuum cleaner body 1 has an electric blower 11 built therein.

A hose 2 forming an air passage is connected to the inside of the electric blower 11 and a hand operation portion 3 is provided at the tip of the hose 2. The hand operation section 3 is provided with an operation means 3b including various operation buttons 3a for setting the drive states of the electric blower 11 and the electric motor 12. Further, at the tip of the hose 2, an impact state applied to the electric motor 12 and the suction port main body 5 via the extension pipes 4 and 4 forming the air passage is notified, for example, a light emitting diode that emits green light and a red light is emitted. A connecting pipe 5a of a suction port body 5 having a built-in display means 6b as a notification means having a display portion 6a made of a light emitting diode is connected and attached. Further, the suction port body 5 has a built-in circuit board on which a large number of circuit elements (not shown) are fixed and which controls the electric motor 12.

As shown in FIGS. 3 and 4, the extension tube 4 is provided with setting signals from the power terminal 4a for supplying power to the electric motor 12 from the vacuum cleaner body 1 and the operating means 3b at one end. A control terminal 4b for transmitting is provided, and a connection terminal (not shown) to which the power terminal 4a and the control terminal 4b are respectively connected is provided at the other end. Further, at one end of the extension tube 4, an impact switch 20 which constitutes the impact detection means 7 is provided.

As shown in FIGS. 4 to 6, the impact switch 20 has a tip that abuts against the end of the other extension pipe 4 or the end of the connecting pipe 5a of the suction port body 5 and is movable back and forth. Has 21. The detector 21 is biased by a spring 22 in the protruding direction. Also, the shock switch 20
It has a switch SW for switching the terminals a, b, and c according to the advance / retreat of the detector 21.

As shown in FIG. 4, the extension pipes 4 and 4 are connected to each other and when the suction port body 5 is run on the floor surface by pushing or pulling the manual operation portion 3, the extension pipes 4 and 4 may be different from each other due to a clearance or the like. There is a slight gap. Further, in this state, the detector 21 of the shock switch 20 is
Protrudes in a state of being connected to the terminal a. Further, when the suction port body 5 collides with a wall or furniture during cleaning, the gap between the extension pipes 4 and 4 becomes short, the detector 21 is retracted against the bias of the spring 22, and the switch SW is connected to the terminal b. , C.

Then, the impact detecting means 7 has the detector 21.
When the switch SW is switched in response to the advance / retreat of the voltage, the output terminal A outputs different voltage values, for example, the voltages shown in Table 1.

[0017]

[Table 1] Next, the circuit configuration of the above embodiment will be described with reference to FIGS.

In FIG. 1, an electric blower 11 provided in the vacuum cleaner body 1 and an electric motor 12 provided in the suction port body 5 are a triac Tr1 for power control,
It is connected to the commercial AC power supply E via Tr2. The control means 25 incorporated in the electric vacuum cleaner body 1 is connected to the gates of the triacs Tr1 and Tr2. Further, the control means 25 includes the operation means 3b of the hand operation portion 3 of the hose 2 and the impact detection means 7 arranged on the extension tube 4.
The impact switch 20 and the display means 6b having the display portion 6a arranged in the suction port body 5 are connected. Further, the control means 25 is composed of the impact detection means 7 and the electric blower 11 as an informing means 6c, that is, the impact detection means 7 changes the input of the electric blower 11 when an impact of a predetermined value or more is detected. Are configured.

As shown in FIG. 6, the shock detecting means 7 has a switch SW of the shock switch 20 connected to a constant voltage of, for example, 5 V through a resistor R1, and switches in response to the forward / backward movement of the detector 21. The resistor Rb is connected to the terminal b
A resistor Rc having a resistance value larger than the resistor R is connected to the.

Next, the operation of the above embodiment will be described with reference to the current value waveform chart shown in FIG.

At the time of cleaning, power is supplied by a power cord (not shown), and the hose 2, extension tube 4 and suction port body 5 are supplied.
Is connected to the vacuum cleaner body 1, and the hand operation part 3 of the hose 2 is connected.
Operate the operating means 3b of the electric blower 11 and the electric motor 12
Driving the hose 2 to a predetermined driving state, and the hand operation part 3 of the hose 2
Push and pull to run the suction port body 5 on the floor and clean it.

In the normal state, a gap is formed in the connecting portion of the extension tubes 4 and 4, so that the detector of the shock switch 20 is detected.
Reference numeral 21 projects in a state where the switch SW is connected to the terminal a. In this state, the output terminals A to 5 of the impact detection means 7
A voltage of V is output, and this voltage is detected by the control means 25, and the drive state of the electric blower 11 set by the operation means 3b is maintained as it is.

If the suction port body 5 collides with a wall or furniture during cleaning, the gap between the extension pipes 4 and 4 becomes short, and the detector 21 is retracted against the bias of the spring 22 and the switch SW. Switches to terminals b and c. Then, in the case of a weak impact in which the switch SW is switched to the terminal b, the impact detection means 7
A voltage of, for example, 2.5 V is output from the output terminal A of the above, and in the case of a strong shock in which the switch SW is switched to the terminal c, a voltage of, for example, 0 V is output from the output terminal A of the shock detecting means 7.

When the control means 25 detects the voltage output from the impact detection means 7, as shown in FIG.
The control means 25 raises or lowers the input of the electric blower 11 to change the suction force of the suction port main body 5 with respect to the floor surface, that is, the operability and the driving sound, so that the operator receives an impact on the suction port main body 5. Notify that you have joined. Further, as the input of the electric blower 11 decreases, the control means 25
When a voltage of 2.5 V is detected, it is determined that a weak impact is applied to the suction port body 5, and a green light emitting diode (not shown) of the display unit 6a of the display means 6b is caused to emit light, and a voltage of 0 V is detected. Judges that a strong shock has been applied to the suction port body 5, and causes a red light emitting diode (not shown) of the display portion 6a of the display means 6b to emit light to notify the operator. In addition, when the notification is given by increasing the input of the electric blower 11, there is an effect that the cleaning property of a corner portion such as a wall is improved simultaneously with the notification.

Next, the operation of the control means will be described with reference to the flow charts shown in FIGS. 7 and 8 and the waveform diagrams of the current values shown in FIGS. 9 and 10.

First, in the notification means 6c, the control means 25
As shown in FIG. 7, it is determined whether or not electric power is supplied and the electric blower 11 is driven by the operation of the operation means 3b (step 1). When it is determined that the electric blower 11 is not driven, the process returns to step 1 again to recognize the drive of the electric blower 11, and when it is determined that the electric blower 11 is driven, the impact detection means 7 4V from the output terminal A of
It is determined whether or not a voltage of 5 V or more is output (step 2).

When it is detected that a voltage of 4 V or more and less than 5 V is output from the output terminal A of the impact detecting means 7, the suction port main body 5 collides with a wall or furniture and the impact is applied. Instead, the input of the set electric blower 11 is maintained as it is, and the process returns to step 1.

The output terminals A to 4 of the impact detecting means 7
When it is detected that the voltage less than V is output, it is determined that the impact is applied to the suction port body 5 and the detector 21 of the impact switch 20 is retracted, and the switch SW is switched to the terminal b or the terminal c. As shown in FIG. 10, the electric blower 25
Input is increased or decreased by a predetermined time t1 (step 3), and the process returns to step 1.

Further, when the shock is applied again within a predetermined time t1 when the input of the electric blower 11 is reduced, as shown in FIG. 10, a predetermined time is elapsed from the time when the last shock is detected.
t1 Increases or decreases the input of the electric blower 11.

On the other hand, the display means 6b, as shown in FIG.
The electric blower 11 is supplied with electric power and operated by the operation means 3b.
It is determined whether or not is driving (step 11). Then, when it is determined that the electric blower 11 is not driven, the process returns to step 11 again to recognize the drive of the electric blower 11,
When it is determined that the electric blower 11 is driven, it is determined whether or not a voltage of 4 V or more and less than 5 V is output from the output terminal A of the impact detection means 7 (step 12).

When it is detected that a voltage of 4 V or more and less than 5 V is output from the output terminal A of the shock detecting means 7, the suction port main body 5 collides with a wall or furniture and a shock is applied. Instead, the set input of the electric blower 11 is maintained as it is, and the process returns to step 11.

The output terminals A to 4 of the impact detection means 7
When it is detected that a voltage of V or more and less than 5 V is not output, that is, a voltage of less than 4 V is output from the output terminal A of the impact detecting means 7, 1 V or more and 4 V or more from the output terminal A of the impact detecting means 7. It is determined whether or not a voltage lower than the output voltage is output (step 13).

When it is detected that a voltage of 1 V or more and less than 4 V is output from the output terminal A of the shock detecting means 7, a weak shock is applied to the suction port main body 5 and the shock switch.
It is judged that the detector 21 of 20 is retracted and the switch SW is switched to the terminal b, and as shown in FIG. 10, the green light emitting diode of the display portion 6a is made to emit t2 for a predetermined time (step
14) and return to step 11.

Further, in step 13, it is detected that the output terminal A of the impact detecting means 7 does not output a voltage of 1 V or more and less than 4 V, that is, the output terminal A of the impact detecting means 7 outputs a voltage of less than 1 V. In that case, it is judged that the weak impact is applied to the suction port main body 5 and the detector 21 of the impact switch 20 is retracted, and the switch SW is switched to the terminal c, and as shown in FIG. The light emitting diode is made to emit t2 for a predetermined time (step 15), and step 11
Return to

When a shock is applied to the suction port body 5 again while the light emitting diode of the display section 6a emits light, as shown in FIG. 10, the shock received lastly depends on the strength of the shock. Then, the light emitting diode t2 is caused to emit light for a predetermined time.

Therefore, according to the above-described embodiment, when the impact detection means 7 detects an impact applied to the suction port body 5 of a predetermined value or more, the input of the electric blower 11 is changed for a predetermined time, and the light emitting diode emits light. To let you know,
It is possible to inform the operator not to perform an operation in which a further impact is applied to the suction port body 5, and it is possible to prevent damage to the suction port body 5, the wall, the furniture, and the like.

Since this notification is made by visual notification using a light emitting diode, auditory notification by a change in driving sound of the electric blower 11, and notification by a change in operating force, the user can be surely notified. be able to. of course,
The notification may be made only by the light emitting diode by the display means 6b, or may be made only by the input change of the electric blower 11 which is an essential component of the electric vacuum cleaner. In the latter case, it is not necessary to provide any special notification means, so the structure can be simplified.

Further, the operator sets the electric blower 11 to the original input state in order to return the input state of the electric blower 11 to the original input state before the increase or decrease of the input after raising or lowering the input of the electric blower 11 for a predetermined time. Workability can be improved without the need for rework.

Further, the structure in which the shock is detected by the shock switch 20 which detects the clearance of the connecting portion of the extension pipes 4 and 4 in the extension pipe 4 has been described, but the shock detection means 7 is not limited to this structure and the suction port. Any structure that detects an impact applied to the main body 5 can be used.

Furthermore, when a shock is applied to the suction port body 5, the suction fan body 5 is controlled together with the control of the drive of the electric blower 11.
In addition, the traveling wheels and the rotating blades that are rotationally driven by the electric motor 12 are driven so as to rotate in the opposite direction to the traveling direction of the suction port body 5, and the drive of the electric motor 12 is controlled so as to reduce the traveling performance. The operator may be informed.

[0041]

According to the electric vacuum cleaner of the first aspect, when the impact detecting means applies an impact of a predetermined value or more to the suction port main body, the informing means informs that the suction is performed when an impact of a predetermined value or more is applied. It is possible to inform the user that the mouth body, furniture, etc. are likely to be damaged.

According to the electric vacuum cleaner of the second aspect, in addition to the electric vacuum cleaner of the first aspect, the notification means gives an alarm by changing the input of the electric blower, that is, the suction on the floor surface of the suction port body. Since the notification is given by the change in operability caused by the force and the change in the driving sound of the electric blower, the electric blower, which is an indispensable constituent part of the electric vacuum cleaner, can be used without providing a dedicated notifying means.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a vacuum cleaner according to the present invention.

FIG. 2 is a perspective view showing an appearance of the same electric vacuum cleaner.

FIG. 3 is a front view showing an end portion of the above extension tube.

FIG. 4 is an explanatory diagram showing a connection state of the extension pipes.

FIG. 5 is a plan view showing the same impact switch.

FIG. 6 is a circuit diagram showing the impact detection means of the above.

FIG. 7 is a flowchart illustrating the operation of the control unit.

FIG. 8 is a flow chart for explaining the operation of the above control means.

FIG. 9 is a graph showing the relationship between the impact switch and the input of the electric blower.

FIG. 10 is a graph illustrating the operation of the above control means.

[Explanation of symbols]

 1 Vacuum cleaner main body 5 Suction port main body 6b Display means as notification means 6c Notification means 7 Impact detection means 11 Electric blower

Claims (2)

[Claims] 1. An electric vacuum cleaner body having a built-in electric blower, a suction port body that opens a suction port that communicates with the electric blower through an air passage, and a shock detection that detects a shock applied to the suction port body. An electric vacuum cleaner comprising: a means and a notifying means for notifying that the shock detecting means has detected a shock applied to the suction port body and having a predetermined value or more. 2. The electric vacuum cleaner according to claim 1, wherein the notifying means makes a notification by changing an input of the electric blower.