JPH11313789A - Controller for electric vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the power consumption by detecting the motion of cleaning work with a vibration acceleration sensor stopping the operation when no cleaning work is done. SOLUTION: This controller is constituted of an operation part 12 of an electric vacuum cleaner provided with a fan motor 10, the vibration acceleration sensor 13 for detecting the vibration acceleration of the operation part 12 and a drive control means 15 for adjusting the driving force of the fan motor 10 in response to a signal of the vibration acceleration sensor 13. Thus, when the vibration acceleration of the operation part 12 is reduced, the driving force of the fan motor 10 is stopped or lowered so as to reduce consumption.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a controller for a vacuum cleaner.

[0002]

2. Description of the Related Art Conventionally, a control device for a vacuum cleaner of this kind has
Japanese Patent Application Laid-Open No. 3-66345 has been known. Hereinafter, the contents will be described with reference to FIGS. 9 and 10.

As shown in FIG. 9, a cleaner body 2 having a fan motor 1 provided therein, a floor nozzle 4 connected to the cleaner body 2 through an air passage 3, and movement of the floor nozzle 4 by a wheel. Rotation speed detecting means 7 for detecting the rotation speed of the pulley 5 and the pulley 6
And control means 8 for stopping or reducing the rotation of the fan motor 1 when the floor nozzle is in a stationary state in response to a signal from the rotation number detecting means 7.

[0004]

However, in the above-mentioned prior art, the rotation speed detecting means 7 for detecting the speed of the floor nozzle 4 based on the rotation speed of the wheel 5 does not sufficiently reflect the action of the cleaning worker. Even if it moves at a constant speed, the wheels are rotating and the fan motor 1 does not stop. Therefore, there is a problem that the fan motor 1 cannot be stopped while the cleaner body 2 is moving.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention operates a main body of a vacuum cleaner having a fan motor, a nozzle for sucking dust, and operates the vacuum cleaner. An operation unit, vibration detecting means for detecting vibration acceleration of a predetermined portion of the vacuum cleaner, and drive control means for adjusting a driving force of a fan motor based on a signal from the vibration detecting means are provided.

According to the above invention, the vibration acceleration of a predetermined portion can be detected.
Since the vibration acceleration decreases, the driving force of the fan motor can be controlled to stop or decrease.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is directed to a vacuum cleaner having a fan motor, a main body, a nozzle for sucking dust, an operation unit for operating the vacuum cleaner, and an operation unit for the vacuum cleaner. Vibration detection means for detecting a vibration acceleration of a predetermined portion,
There is provided a drive control means for adjusting the drive force of the fan motor based on the signal of the vibration detection means. Then, the vibration acceleration of the predetermined portion can be detected. At that time, during the movement at a constant speed, the vibration acceleration becomes small, so that the driving force of the fan motor can be controlled to stop or decrease. .

[0008] The vibration detecting means is provided in the nozzle portion. And, by providing the nozzle portion, it is possible to accurately detect the movement of the nozzle located closest to the dust,
Drive control can be performed accurately.

[0009] The vibration detecting means is provided in the operation unit.
By providing the operation unit, the movement of the worker's hand can be accurately detected, and the drive control can be performed accurately.

[0010] The vibration detecting means is provided in the main body.
By providing the main body, the movement of the main body can be accurately captured, and since the distance to the drive control means is short, the vibration acceleration can be accurately detected without the influence of noise or disconnection.

The vibration detecting means is provided in a hose connecting the nozzle and the main body. And, by providing the hose portion, the movement of the operation of the operator can be accurately grasped, and the drive control can be accurately performed.

The vibration detecting means is configured to detect a three-dimensional vibration acceleration. Since the detection can be performed in three dimensions, the movement in any direction can be detected, and the movement of the worker is not missed.

[0013] Further, there is provided a level determination control means for stopping the number of revolutions of the fan motor when it is determined from the signal of the vibration detection means that the vibration is below a predetermined level. Then, by detecting vibration below a predetermined level, it is possible to determine that the worker has stopped working, so that the fan motor can be stopped to achieve power saving and noise reduction. .

Further, there is provided first rotation speed control means for lowering the rotation speed of the fan motor when it is determined from the signal of the vibration detection means that the vibration is below a predetermined level. Then, by detecting vibration below a predetermined level, it is determined that the worker has interrupted the work, and the rotation of the fan motor is reduced, whereby power saving and noise reduction can be realized. .

Further, a time judgment control means for stopping the number of revolutions of the fan motor when the time during which the vibration is equal to or less than the predetermined level has passed for a predetermined time has been provided. And, by detecting vibrations below a predetermined level continuously for a predetermined time, it is possible to accurately detect the work stoppage of the worker, and to stop or reduce the rotation of the fan motor only when necessary, Control malfunction can be prevented.

Further, a second rotation speed control means for increasing the rotation speed of the fan motor when it is determined from the signal of the vibration detection means that the vibration is equal to or higher than a predetermined level is provided. Then, when the vibration of a predetermined level or more is detected, it is determined that the worker is strongly performing the work, and the rotation speed of the fan motor is increased to perform the powerful suction work smoothly.

Also, a main body of the vacuum cleaner having a fan motor, a nozzle for sucking dust, an operation section for operating the vacuum cleaner, and a moving direction of a predetermined portion of the vacuum cleaner are described. A movement detecting means for detecting, and a moving means for moving the main body in a moving direction by a signal of the movement detecting means. By moving the main body in the direction of vibration according to the signal of the vibration detecting means, the main body can be pulled even if the arm strength of the worker is weak.

Further, a main body of the vacuum cleaner having a fan motor, a nozzle for sucking dust, an operation section for operating the vacuum cleaner, and detecting a moving direction of a predetermined portion of the vacuum cleaner. There is provided a movement detecting means, and a moving means for moving the nozzle portion in a moving direction according to a signal of the movement detecting means. Then, by moving the nozzle portion in the direction of the vibration by the signal of the vibration detecting means, the nozzle portion which has become heavier due to the suction force can be moved lightly.

Further, the movement detecting means is provided on the operation unit.
The direction and magnitude of the vibration are obtained from the signal of the vibration detecting means for detecting the vibration acceleration in the three-dimensional direction, and the direction and amount of movement are detected. By providing the operation unit with vibration detecting means for detecting vibration acceleration in the three-dimensional direction, the main body or the nozzle unit can be moved according to the movement of the hand of the operator, and the vibration is detected from the three-dimensional vibration acceleration. And the magnitude of the movement can be obtained as the direction and amount of movement.

The moving means operates when the level of the vibration acceleration detected by the movement detecting means is equal to or higher than a predetermined level. When the moving means operates at or above the predetermined level, the moving means can be prevented from moving with a slight vibration, thereby preventing a malfunction.

[0021]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a configuration diagram of a vacuum cleaner according to Embodiment 1 of the present invention. 1 and 2, 9 is a main body of a vacuum cleaner having a fan motor 10, 11 is a nozzle for sucking dust, 12 is an operation unit for operating the vacuum cleaner, and 13 is a vacuum cleaner. A vibration acceleration sensor 14 serving as vibration detection means for detecting vibration acceleration of the operation unit 12;
Is a level determination control means for synthesizing the signals of the respective vibration acceleration sensors and comparing them with a predetermined level;
Drive control means for adjusting the drive force of the fan motor 10 by the signal of No. 3. Here, the vibration acceleration sensor 13
A vibration acceleration sensor X16 for detecting vibration in the X direction;
It comprises a vibration acceleration sensor Y17 for detecting vibration in the direction and a vibration acceleration sensor Z18 for detecting vibration in the Z direction. The vibration acceleration sensors are installed so that the vibration detection directions are orthogonal to each other.

Next, the operation and operation will be described with reference to FIGS. As shown in FIG. 3, the control device for a vacuum cleaner of the present invention measures whether or not a state in which the vector composite value V of each of the vibration acceleration sensors X, Y, Z is equal to or less than a first predetermined value has elapsed for a predetermined time. 0 is input to initialize a time counter A and a time counter B for measuring whether or not a state in which the combined value V of each of the vibration acceleration sensors X, Y, and Z is equal to or greater than a second predetermined value has passed a predetermined time. I do.

When the vector composite value V of each of the vibration acceleration sensors X, Y, Z is equal to or greater than the first predetermined value, the fan motor 10 is operated. At this time, if the speed is equal to or more than the second predetermined value, the operation is controlled to high operation as the second rotation speed control means. To control. When the vector composite value V is less than the first predetermined value for a predetermined time, that is, when the counter A is equal to or more than the first count value, the fan motor is turned off as time determination control means. Further, after the vector composite value V becomes equal to or more than the second predetermined value, the state where the value is less than the second predetermined value is a predetermined time, that is, after the counter B becomes equal to or more than the second count value, the state of the fan motor 10 is changed. It was decided to control to a low operation state.

According to this control, even when the vector value V of the vibration acceleration becomes less than the predetermined value, the cleaning operation can be continued without being stopped immediately or in the low operation state. Also,
When the vector composite value V becomes equal to or more than the predetermined value, the operation can be immediately switched to the low operation or the high operation, and the cleaning operation can be performed efficiently.

As described above, the signal of the vibration acceleration sensor 13 provided in the operation unit 12 is used to control the fan motor 10 of the cleaner.
Can be controlled, and by rapidly moving the operation unit 12, large vibration acceleration is detected, and the fan motor 10 can be controlled from a stop to a low operation and a high operation. Since the vibration acceleration sensor 13 capable of detecting the vibration acceleration in the three-dimensional direction is used, even if the operation unit is operated in any direction, the vibration acceleration of the operation can be detected. The fan motor 10 can be controlled appropriately in response to the movement of the operation unit. Further, even when the cleaning operation is stopped or when the cleaner is moving at a constant speed, it is not a speed sensor, so that the vibration acceleration becomes equal to or less than a predetermined value and can be stopped, thereby saving power.

The case where the vibration acceleration sensor is installed on the operation unit has been described. However, when the vibration acceleration sensor is installed on the nozzle unit, the movement of the nozzle closest to the dust can be accurately detected, and the drive control is performed. Can be performed accurately. In addition, when provided in the operation unit, the movement of the worker's hand can be accurately detected.When provided in the main unit, the movement of the main unit can be accurately detected, and the distance to the drive control means can be reduced. Since they are close to each other, the vibration acceleration can be accurately detected without the influence of noise or disconnection.

Further, when the hose is provided, the movement of the operator's operation can be accurately grasped, the drive control can be accurately performed, and the same effect as that of the embodiment can be obtained. And, the case where it is provided in the operation unit is the most suitable because the movement of the operation of the hand can be accurately grasped. It is apparent that the same effect can be obtained even in a vacuum cleaner in which the nozzle portion and the main body portion are integrated. The same effect can be obtained by detecting the vibration acceleration in only one direction, but by detecting in three directions, the effect can be exerted without overlooking the movement of the operation.

(Embodiment 2) FIG. 5 is a configuration diagram showing the configuration of a vacuum cleaner according to Embodiment 2 of the present invention. Here, the same components as those in the first embodiment are denoted by the same reference numerals. The difference from the first embodiment is, as shown in FIG. 6, in the direction of the combined vector of the vibration acceleration sensor 13 installed in the operation unit 12, that is, the vibration acceleration sensor X16, the vibration acceleration sensor Y17, and the vibration acceleration sensor Z18. That is, a movement control means 19 for controlling the movement of the main body 9 and a motor 20 as a moving means are mounted on wheels 21 of the main body 9.

Next, the operation and operation will be described. By moving the operation unit 12 in the direction in which it is desired to move, the vibration acceleration of the operation unit is set in three directions.
Y and Z can be detected. When the vector composite value V3 of the vibration acceleration in three directions is equal to or higher than a predetermined level, the horizontal 2
The vector composite value V2 is detected from the level of the vibration acceleration in the direction, and the movement control means controls the motor of the wheel unit so that the main body can move in the direction of the horizontal composite vector V2. The movement amount is set to operate in accordance with the value of the vector composite value V3. The wheel 21 shown in FIG.
Is provided with a direction changing device 22 that changes the direction of the wheels so that the wheel can be driven in the front-rear direction and the left-right direction, and can be moved in any direction.

As described above, by moving the operation section, the main body can be moved in that direction, the cleaning operation can be performed with a small force, and it is possible even for elderly people. Further, by adding the second embodiment to the first embodiment, it is possible to realize both power saving and improvement in operability.

(Embodiment 3) FIG. 7 is a configuration diagram showing the configuration of a vacuum cleaner according to Embodiment 3 of the present invention. Here, the same components as those of the first and second embodiments are denoted by the same reference numerals. The difference from the second embodiment is that, as shown in FIG. 8, the direction of the combined vector of the vibration acceleration sensor 13 installed in the operation unit 12, that is, the vibration acceleration sensor X16, the vibration acceleration sensor Y17, and the vibration acceleration sensor Z18. Nozzle part 11
That is, a movement control means 19 for controlling the movement of the motor and a motor 20 as the movement means are installed on the wheels 23 of the nozzle unit 11.

Next, the operation and operation will be described. By moving the operation unit 12 in the direction in which it is desired to move, the vibration acceleration of the operation unit is set in three directions.
Y and Z can be detected. When the vector composite value V3 of the vibration acceleration in three directions is equal to or higher than a predetermined level, the horizontal 2
The vector composite value V2 is detected from the level of the vibration acceleration in the direction, and the movement control means controls the motor of the wheel unit so that the main body can move in the direction of the horizontal composite vector V2. The movement amount is set to operate in accordance with the value of the vector composite value V3. Note that the wheel 23 shown in FIG. 7 includes a direction changing device 22 that changes the direction of the wheel so that the nozzle portion 11 can be driven in the front-rear direction and the left-right direction, and can be moved in any direction. .

As described above, by moving the operation unit, the nozzle unit can be moved in that direction, so that the cleaning operation can be performed with a small force, and it is possible even for the elderly. Further, even if the suction force is increased, the operability is assisted by the electric motor force, so that the cleaning can be performed easily, and both the improvement of the cleaning performance and the improvement of the workability can be achieved. Further, by combining with the first embodiment, power saving can be obtained. Example 2 and Example 3
Has been described in the case where the vibration acceleration sensor is installed in the operation unit. However, similarly to the first embodiment, when the vibration acceleration sensor is installed in the nozzle unit, provided in the operation unit, provided in the main unit, and provided in the hose unit. In this case, the same effect can be obtained. And
The case where it is provided in the operation unit is most suitable because the movement of the operation of the hand can be accurately grasped. It is apparent that the same effect can be obtained even in a vacuum cleaner in which the nozzle portion and the main body portion are integrated. The same effect can be obtained by detecting the vibration acceleration in only one direction, but by detecting in three directions, the effect can be exerted without overlooking the movement of the operation.

[0035]

As is apparent from the above description, the vibration detecting device of the present invention has the following effects.

A drive control means for adjusting a drive force of the fan motor based on a signal of a vibration detection means for detecting a vibration acceleration of a predetermined portion of the vacuum cleaner stops the drive force of the fan motor in accordance with a work operation. In addition to the drive control such as a decrease, it is possible to eliminate a malfunction such as stopping while moving at a constant speed.
Also, by providing the vibration detection means in the nozzle portion, it is possible to accurately detect the movement of the nozzle being cleaned,
Drive control can be performed accurately. In addition, the provision of the vibration detection means in the operation section allows the movement of the worker's hand to be accurately detected, and the drive control to be performed accurately.

Further, since the vibration detecting means is provided in the main body, the movement of the main body can be captured, so that the completion of the work can be accurately detected.

Further, by providing the vibration detecting means in the hose section connecting the nozzle section and the main body section, the movement of the operation of the operator can be accurately grasped, and the drive control can be accurately performed.

Further, the vibration detecting means can detect the motion in any direction by detecting the vibration acceleration in the three-dimensional direction, so that the motion in any direction can be detected, and the motion of the worker is missed. There is no.

When the vibration is determined to be below a predetermined level based on a signal from the vibration detecting means, a level determination control means for stopping the rotation speed of the fan motor is provided. Since it can be determined that the worker has stopped working, the fan motor can be stopped to achieve power saving and low noise.

Further, when it is determined from the signal of the vibration detecting means that the vibration is equal to or lower than the predetermined level, the first rotation control means for lowering the rotation speed of the fan motor is provided, whereby the vibration lower than the predetermined level is detected. Thereby, it is possible to realize power saving and noise reduction by reducing the rotation of the fan motor by judging that the worker has interrupted the work.

[0042] Further, by providing time determination control means for stopping the number of revolutions of the fan motor when the time during which the vibration is below the predetermined level has passed for a predetermined time, the vibration below the predetermined level is continuously detected for a predetermined time. This makes it possible to accurately detect the worker's work stoppage, and to stop or reduce the rotation of the fan motor only when necessary, thereby preventing malfunction of the control.

When the vibration is determined to be equal to or higher than a predetermined level from the signal of the vibration detecting means, the second rotation control means for increasing the rotation speed of the fan motor is provided, whereby the vibration equal to or higher than the predetermined level is detected. As a result, it is determined that the worker is strongly performing the work, and the rotation speed of the fan motor is increased, so that the powerful suction work can be smoothly performed.

Further, by providing a moving means for moving the main body in the moving direction in accordance with a signal from the movement detecting means for detecting the moving direction of the predetermined portion of the vacuum cleaner, the main body is moved in accordance with the movement of the worker. Can assist workers with low strength.

Further, by providing a moving means for moving the nozzle in the moving direction in accordance with a signal from the movement detecting means for detecting the moving direction of the predetermined portion of the vacuum cleaner, the nozzle is moved in accordance with the movement of the worker. This makes it possible to lightly move the nozzle portion that has become heavy due to the suction force.

The movement detecting means obtains the direction and magnitude of the vibration from the signal of the vibration detecting means for detecting the three-dimensional vibration acceleration, and detects the moving direction and the moving amount.
The direction and the amount of movement can be obtained according to the movement of the worker's hand, and the main body or the nozzle portion can be accurately moved.

Further, when the movement means operates when the level of the vibration acceleration detected by the movement detection means is equal to or higher than a predetermined level, the movement means can be prevented from moving by a slight vibration, thereby preventing malfunction.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating a control device of a vacuum cleaner according to a first embodiment of the present invention.

FIG. 2 is a block diagram of the control device.

FIG. 3 is a flowchart showing the operation of the control device.

FIG. 4 is another flowchart showing the operation of the control device.

FIG. 5 is a configuration diagram illustrating a control device for a vacuum cleaner according to a second embodiment of the present invention.

FIG. 6 is a block diagram of the control device.

FIG. 7 is a configuration diagram illustrating a control device for a vacuum cleaner according to a third embodiment of the present invention.

FIG. 8 is a block diagram of the control device.

FIG. 9 is a block diagram illustrating a control device of a conventional vacuum cleaner.

FIG. 10 is a sectional view showing a state detecting means of the control device.

[Explanation of symbols]

 9 Vacuum cleaner body 10 Fan motor 11 Nozzle part 12 Operation part 13 Vibration acceleration sensor 14 Level judgment control means 15 Drive control means 16 Vibration acceleration sensor X 17 Vibration acceleration sensor Y 18 Vibration acceleration sensor Z 19 Movement control means 20 Motors 21, 23 Wheel

Claims (14)

[Claims] 1. A main unit of a vacuum cleaner having a fan motor, a nozzle unit for sucking dust, an operation unit for operating the vacuum cleaner, and detecting a vibration acceleration of a predetermined portion of the vacuum cleaner. A controller for a vacuum cleaner, comprising: a vibration detecting unit that performs the driving operation; and a drive control unit that adjusts a driving force of the fan motor based on a signal of the vibration detecting unit. 2. The method according to claim 1, wherein the vibration detecting means is provided in the nozzle portion.
A control device for the vacuum cleaner according to the above. 3. The control device for a vacuum cleaner according to claim 1, wherein the vibration detecting means is provided on the operation unit. 4. The control device for a vacuum cleaner according to claim 1, wherein the vibration detecting means is provided in the main body. 5. The control device for a vacuum cleaner according to claim 1, wherein the vibration detecting means is provided in a hose portion connecting the nozzle portion and the main body portion. 6. The control device for a vacuum cleaner according to claim 1, wherein the vibration detecting means detects a three-dimensional vibration acceleration. 7. A vacuum cleaner according to claim 1, further comprising a level determination control means for stopping the number of revolutions of the fan motor when the signal from the vibration detection means is determined to be lower than a predetermined level. Control device. 8. The apparatus according to claim 1, further comprising: first rotation speed control means for lowering the rotation speed of the fan motor when the signal from the vibration detection means is determined to be lower than a predetermined level. Control device for vacuum cleaner. 9. A vacuum cleaner according to claim 7, further comprising a time judgment control means for stopping the number of revolutions of the fan motor when a time from a signal from the vibration detection means which is equal to or less than a predetermined level elapses a predetermined time. Control device. 10. When the signal from the vibration detecting means is determined to be equal to or higher than a predetermined level, the rotation speed of the fan motor is increased.
7. The method according to claim 1, further comprising:
The control device for an electric vacuum cleaner according to any one of the preceding claims. 11. A main unit of a vacuum cleaner having a fan motor, a nozzle unit for sucking dust, an operation unit for operating the vacuum cleaner, and a moving direction of a predetermined portion of the vacuum cleaner. A controller for a vacuum cleaner, comprising: a movement detecting means for detecting; and a moving means for moving the main body in accordance with a signal from the movement detecting means. 12. A vacuum cleaner provided with a fan motor, a main body, a nozzle for sucking dust, an operation unit for operating the vacuum cleaner, and a moving direction of a predetermined portion of the vacuum cleaner. A control device for a vacuum cleaner, comprising: a movement detecting means for detecting; and a moving means for moving the nozzle portion based on a signal from the movement detecting means. 13. The movement detecting means has vibration detecting means for detecting vibration acceleration in a three-dimensional direction. The direction and magnitude of the vibration are determined by a signal from the vibration detecting means, and the direction and amount of movement are determined. The control device for a vacuum cleaner according to claim 11, wherein the control device detects the condition. 14. The control device for a vacuum cleaner according to claim 13, wherein the moving means operates when the level of the vibration acceleration detected by the movement detecting means is equal to or higher than a predetermined level.