JP2007512884A5 - - Google Patents

Description

Method for driving vacuum cleaner having intake nozzle and vacuum cleaner having intake nozzle

A first aspect of the present invention is a driving method of a vacuum cleaner having an intake nozzle, wherein an intake air flow in which a reduced pressure is generated in the intake nozzle is generated by a motor in the vacuum cleaner, and the operation of the vacuum cleaner ( The present invention relates to a control method for measuring a stress load which occurs in an extrusion operation and / or a pull-back operation) and finally acts as a push-out resistance or a pull-back resistance on a user.

A prior art method is known from WO 97/26819 A2. This shows a method in which the movement direction at each time, that is, the traveling direction of the intake nozzle is acquired, and the pressure reduction obtained for control is changed accordingly. This solution is relatively high, especially in the carpet floor intake operation, where the reduced pressure, which in itself ultimately acts as a resistance to the user, is dominated by the portion of the inlet corresponding to the floor being cleaned. Derived from the knowledge that Due to the operation of the intake nozzle by the user, in principle, additional resistances appear that change along each direction of operation of the intake nozzle, for example by the use of a sturdy grip, such as an intake pipe or similar part. Depending on whether the intake nozzle is pushed or pulled by the operator, different contact conditions and operation conditions are generated for the intake nozzle.
WO97 / 26819 A2

The solution shown in the above WO application responds by controlling the low pressure according to the direction of movement of the intake nozzle. In view of the techniques described so far, the technical problem of the present invention is found as improving the conventional method in terms of operability.

This problem is approximated by the invention according to claim 1, that is, the invention in which, in each extrusion operation, the invention automatically suppresses each of the extrusion resistance of the vacuum cleaner according to the measured stress load. And basically solved. According to the present invention, continuous control of the stress load is performed, and the extrusion resistance is changed according to the measured value, so that the user is finally comfortably affected. Therefore, depending on the combination of floor and, if necessary, the device, the corresponding ventilation window is automatically adjusted, so that the user can always obtain the optimum cleaning result according to the floor, and the sliding stress can be reduced. It is configured not to raise unnecessarily. The essence of the invention is the detection of the intake nozzle slip load and the feedback to a dedicated device for adjusting the extrusion resistance.

Here, in each extrusion operation, the stress load is measured and the impact resistance is adjusted. Preferably, furthermore, in both the extrusion operation and the retraction operation, the stress load is measured and both the corresponding extrusion resistance and retraction resistance are adjusted to a substantially constant level. In this connection, an adjustment is made by changing the pressure reduction in the intake nozzle, and with regard to the pressure reduction control, there is an appropriate and constant stress load on the user, especially with an optimal cleaning result according to the floor. It is further proposed that the amount realized is evaluated. This manifests itself as an advantage, particularly in carpet cleaning, that only an optimal air flow is required for the type of carpet in order to optimally clean the carpet.

The stronger the air flow, the stronger the unpleasant slip or pull back stress is generated on the user. Continuous and automatic measurement of stress load enables continuous control of cleaning performance and stress load. In addition to the floor material to be cleaned, the type of intake nozzle and the operating conditions of the intake nozzle, and / or by the user Additional adjustable parameters may be introduced, such as the stress load applied to the intake pipe on the intake nozzle. The stress load that acts as a push or pull resistance on the user may be measured at a portion of the movable rod, such as a suction pipe or hand grip portion of a vacuum cleaner.

Therefore, a stress sensor is provided in a stress flow path such as between the hand grip of the vacuum cleaner in the hand vacuum cleaner or between the intake pipe and the intake nozzle in the floor vacuum cleaner. This stress sensor adjusts the slip stress in both pullback and extrusion operations. This measurement is useful, for example, as an input signal for controlling the suction nozzle depressurization so that the slip stress meets the above objective. Alternatively or in combination, the stress load in the intake nozzle may be measured. Furthermore, it is possible to measure the stress load at the connection between the vacuum cleaner and the intake nozzle, and it is also possible to use other portions of the vacuum cleaner or intake nozzle where the stress is controlled. .

In an intake nozzle having a rotary brush for floor cleaning that can be driven by an electric motor, it is proposed to evaluate the input current of the brush motor in addition to the stress load. This makes it possible to quickly and automatically detect short-term spikes in slip stress, in particular caused by floor surface transitions. The motor current changes very quickly when the floor changes, and the load is large on the carpet floor and relatively small on the hard floor. However, the fact that the motor current also depends on other parameters such as motor wear or contamination between the brush and the brush mounting opening is not the absolute value of the motor current, but rather the variation of these. Are evaluated so that a clear measurement signal is provided independently of the absolute value.

The pressure reduction control is performed in proportion to the measured compressive stress and / or the power of the brush motor. Alternatively, the pressure reduction control may be influenced in excess or insufficient proportion to the measured compressive stress and / or the power of the brush motor. Further, the vacuum cleaner may be provided with a dedicated servo motor that acts on the feedback amount, and may be configured to change the feedback amount in addition to changing the reduced pressure if necessary. Is possible. Correspondingly, depending on the floor configuration or the degree of soiling, the extrusion resistance and / or pullback resistance also drives the servo motor for floors to be cleaned with improved cleaning performance and improved vacuum. To an appropriate level for the user. Here, for example, the servo motor may be driven only by an extrusion operation.

More preferably, the pressure reduction control for adjusting the extrusion resistance and / or the pullback resistance is performed by controlling the auxiliary vent and / or controlling the rotational speed of the fan. Correspondingly, an auxiliary ventilation hole whose opening amount is increased or decreased corresponding to the measured stress load may be provided in the intake nozzle. Instead of this, or in combination with this, the pressure reduction is controlled by electrically controlling the motor power or the rotational speed of the fan that generates the intake air flow in accordance with the measured stress load. It's okay. Furthermore, instead of this, pressure reduction control may be performed by adjusting the cross-sectional area of the intake pipe, such as controlling the rotating plate in the intake pipe.

Further, the distance between the bottom of the intake nozzle and the floor to be cleaned may be adjusted for pressure reduction control. The method according to the invention greatly improves the operability of the vacuum cleaner. For different floors (carpets of different thickness, or hard floors), the intake power is kept constant during the extrusion and retraction operations, which further allows the user to automatically convert single and appropriate slip stress with an automatic function. Realized for. In addition, the physical quality present, or the installation of other measurement sensors such as vacuum sensors, may indirectly identify the quality of the floor, this parameter being added for extrusion resistance control if necessary. It may be introduced.

The present invention further includes a vacuum cleaner comprising an intake nozzle and a motor-driven fan that generates a reduced pressure in the intake nozzle, and finally the user in a vacuum cleaner such as a movable rod of the vacuum cleaner. A stress measuring device is proposed that measures the stress load that acts as an extrusion resistance or pullback resistance and is found as a compressive stress in each extrusion operation. The conventional vacuum cleaner is the above-mentioned WO97 /
No. 26819 A2. There is a sensor means in which a switching means is provided which responds to each movement direction (front and rear) of the intake nozzle and further changes the pressure reduction or the air flow in the intake nozzle portion according to the detected operation direction. A vacuum cleaner provided is described.

In order to improve the conventional vacuum cleaner to one with good operability, it is proposed that the slip resistance is automatically influenced according to each detected stress load. The present invention performs continuous control of the stress load, and the push resistance that ultimately acts comfortably on the user is changed according to the measured value. Therefore, depending on the combination of floor and, if necessary, the device, the corresponding ventilation window is automatically adjusted, so that the user can always obtain the optimum cleaning result according to the floor, and the sliding stress can be reduced. It is configured not to raise unnecessarily. The essence of the invention is the detection of the intake nozzle slip load and the feedback to a dedicated device for adjusting the extrusion resistance. Here, in each extrusion operation, the stress load is measured and the extrusion resistance is flattened.

Preferably, furthermore, the stress load is measured in both the extrusion operation and the retraction operation, and the extrusion resistance and the retraction resistance are controlled to be adjusted to a substantially constant level accordingly. In this connection, the control is performed by changing the pressure reduction in the intake nozzle, and for the low pressure control, the stress load appropriate and constant for the user realizes the optimum cleaning result according to the floor. It is further proposed that the value be evaluated. This clarifies the advantage that only a defined optimal air flow is needed for carpet cleaning of each carpet type in order to optimally clean the carpet.

The stronger the air flow, the stronger the unpleasant slip or pull back stress is generated on the user. Continuous and automatic measurement of stress load enables continuous control of cleaning performance and stress load. In addition to the floor material to be cleaned, the type of intake nozzle and the operating conditions of the intake nozzle, and / or by the user Additional adjustable parameters may be introduced, such as the stress load applied to the intake pipe on the intake nozzle. The stress load that acts as a push or pull resistance on the user may be measured at a portion of the movable rod, such as a suction pipe or hand grip portion of a vacuum cleaner. Therefore, a stress sensor is provided in a stress flow path such as between the hand grip of the vacuum cleaner in the hand vacuum cleaner or between the intake pipe and the intake nozzle in the floor vacuum cleaner. This stress sensor stores the slip stress in both the pull back operation and the extrusion operation.

The measured value is used as an input signal for control in the intake nozzle, such as adjusting the pressure reduction at the intake nozzle so as to satisfy the target value to which the slip stress is given. Alternatively or in combination, the stress load may be measured in the intake nozzle. Furthermore, it is possible to measure the stress load in the connection between the vacuum cleaner and the intake nozzle, and also at other stress adjustment positions in the vacuum cleaner or the intake nozzle part. The pressure reduction control is performed in proportion to the measured compressive stress. Alternatively, the pressure reduction control may be performed so as to be excessively or insufficiently proportional to the measured compressive stress. Further, the vacuum cleaner may be provided with a dedicated servo motor that acts on the feedback amount, and if necessary, the feedback amount may be automatically changed in addition to the pressure reduction control.

Correspondingly, depending on the floor configuration or the degree of soiling, the extrusion resistance and / or pullback resistance also drives the servo motor for floors to be cleaned with improved cleaning performance and improved vacuum. Therefore, it can be suppressed to an appropriate level for the user. Here, for example, the servo motor may be driven only by an extrusion operation. More preferably, the pressure reduction control for adjusting the extrusion resistance and / or the pullback resistance is performed by controlling the auxiliary vent and / or controlling the rotational speed of the fan. Correspondingly, an auxiliary ventilation hole whose opening amount is increased or decreased corresponding to the measured stress load may be provided in the intake nozzle. Instead of this, or in combination with this, the pressure reduction is controlled by electrically controlling the motor power or the rotational speed of the fan that generates the intake air flow in accordance with the measured stress load. It's okay.

Further, for example, the pressure reduction control may be performed by controlling the rotating plate in the intake pipe in order to adjust the diameter of the pipe. In a further specific embodiment, the pressure reduction control is performed by adjusting the distance between the bottom of the intake nozzle and the floor to be cleaned. The measurement of stress is first made in the direction of the handle or intake pipe or the corresponding operating direction. Regarding the measurement of stress, the stress may be measured parallel to the floor and used. As a measurement position, in principle, a movable rod of a vacuum cleaner in a hand vacuum cleaner, an intake pipe in a floor vacuum cleaner, a connection in an adapter, a connection in a vacuum cleaner, a connection nozzle in a vacuum cleaner, or Stress control positions within the adapter or intake nozzle are possible. The stress measuring device may comprise a strain measuring ribbon. Alternatively, the configuration of the stress sensor may be a capacitance sensor, a piezoresistive sensor, a Faraday sensor, or a pressure sensor.

The stress measuring device may also be constituted by a spring restoring system having a limit switch. Furthermore, in an alternative configuration, it is proposed that the load measuring device is constituted by a signal generator that pulls back. Further, it may be combined with a separate load measuring device. Therefore, the stress measurement may be performed by a strain measurement ribbon arranged on the plastic part of the connecting sleeve. Alternatively, the stress measurement may be performed on a metal plate provided in the plastic. In combination with the measurement of the stress in the main stress flow, if necessary, an auxiliary stress damper comprising, for example, a spring-driven flat plate may be arranged. Further, the spring restoration system may be a potentiometer or a limit switch, or may be an optical solution. The capacity sensor may be disposed, for example, between the intake nozzle and the ventilation duct. The optical sensor for stress measurement may be configured to measure a change in light power or a change in refractive index for measurement. In combination with the stress measurement, an auxiliary stress damper comprising, for example, a spring drive plate may be arranged in the main stress flow, if necessary. Further, the spring restoration system may be a potentiometer or a limit switch, or may be an optical solution. The capacity sensor may be disposed, for example, between the intake nozzle and the ventilation duct. An optical sensor for stress measurement is provided so that a change in light power or refractive index can be measured.

Path or stress detection may also be configured as a cam between the connection nozzle and the chassis using a spring restoration system. For springs, moments or stresses acting as sliding stress on the user may be absorbed. This route control may be performed accordingly. In addition to the compressive stress, the power consumption of the motor and / or the rotational speed of the rotating brush located in the intake nozzle may be evaluated. In connection with these adapters with carpeting brushes / or suction nozzles, these comprise a stop switch, which is used at least while the suction flow motor is in operation with the vacuum cleaner stopped. It is also known that brush drive motors are switched off for floor care. Such a stop switch may be removed through the configuration of the present invention. This stress measuring device detects a stationary position where no extrusion load or pullback load occurs.

The rotating brush is automatically switched accordingly. In general, no load on the system may be realized by using this stop switch. This outage is detected and evaluated and the weight of the vacuum cleaner housing, suction hose, and / or suction hose on the suction nozzle or adapter serves as the weight of the housing at no load. No load is also obtained at each other predetermined stationary position and by averaging the measurements for the forward or backward stroke. Depending on the detected stress and the return to the floor, the rotating brush may be controlled with respect to the number of rotations. Another advantage emerges that it is not always necessary to obtain an accurate measurement of the weight. The overall change with respect to the zero point of the system needs to be detected and evaluated. In addition, the associated vacuum cleaner can also detect for electrical coding in the intake nozzle where an adapter or vent window is required for optimal cleaning results.

The carpet floor type may also be detected using a rotating brush in the intake nozzle. Then, the number of rotations of the brush on the carpet floor, the motor input current related thereto, or the brush consumption may be introduced as a parameter. In this connection, in order to achieve high accuracy, parameters are measured in the free rotation state of the brush and on the floor, thereby calibrating the system. As a result, even if it is a hard floor, it is detected and evaluated on the condition that the rotary brush rotates freely. A single threshold value for different floors exists, for example, in a numeric table read into each adapter, and as a result controls the vacuum cleaner. In addition to the fully automatic operation for controlling the extrusion resistance so as not to make the user feel uncomfortable, it is also possible to control using the default. Here, the slip stress may be evaluated as a control variable for the user. For example, it is possible to adjust the slip stress for different user groups (age, frailty, etc.).

The driving method of the vacuum cleaner according to the present invention further measures the stress load at the movable rod portion.

In the driving method of the vacuum cleaner according to the present invention, the stress load is further measured at the intake nozzle 2.

In the driving method of the vacuum cleaner according to the present invention, the stress load is further measured at the connection 9 between the vacuum cleaner 1 and the intake nozzle 2.

In the driving method of the vacuum cleaner according to the present invention, the vacuum cleaner 1 further includes a unique servo motor for controlling the feedback amount.

The vacuum cleaner driving method according to the present invention is further added to the decompression control as necessary, and the feedback amount is automatically adjusted.

In the method of driving the vacuum cleaner according to the present invention, the pressure reduction is further controlled by changing the auxiliary vent 24 and / or changing the rotational speed of the fan wheel.

In the driving method of the vacuum cleaner according to the present invention, the pressure reduction is further controlled by changing the opening of the intake duct.

The vacuum cleaner according to the present invention is further performed by controlling the pressure reduction in the intake nozzle 2.

In the vacuum cleaner according to the present invention, a stress measuring device 17 is further arranged in the intake nozzle 2.

In the vacuum cleaner according to the present invention, the intake nozzle 2 is a part of the adapter.

In the vacuum cleaner according to the present invention, the adapter or the vacuum cleaner 1 further has a connection sleeve, and the stress measuring device 17 is arranged in the connection sleeve.

In the vacuum cleaner according to the present invention, the pressure reduction is further controlled by changing the rotation speed of the fan wheel.

Further, in the vacuum cleaner according to the present invention, the pressure reduction is controlled by changing the auxiliary vent 24.

In the vacuum cleaner according to the present invention, the pressure reduction is further controlled by changing the opening of the intake duct.

In the vacuum cleaner according to the present invention, the stress measuring device 17 is further constituted by a strain measuring ribbon 22.

In the vacuum cleaner according to the present invention, the stress measuring device 17 is further constituted by a stress sensor.

In the vacuum cleaner according to the present invention, the stress measuring device 17 is further constituted by a capacitance sensor.

In the vacuum cleaner according to the present invention, the stress measuring device 17 is further constituted by a piezoresistive sensor.

In the vacuum cleaner according to the present invention, the stress measuring device 17 is further constituted by a Faraday sensor.

In the vacuum cleaner according to the present invention, the stress measuring device 17 is further constituted by a pressure sensor 20.

In the vacuum cleaner according to the present invention, the stress measuring device 17 is further constituted by a spring restoring system 21 having a limit switch.

The vacuum cleaner according to the present invention further includes a signal output device in which the stress measuring device 17 operates continuously.

In the vacuum cleaner according to the present invention, in addition to the compressive stress, the input power of the motor 13 and / or the rotational speed of the rotary brush 15 located in the intake nozzle 2 are controlled.

By the solution of the present invention, a vacuum cleaner having improved operability is realized. For different floors (carpets of different thickness, or hard floors), the intake power is kept constant during the extrusion and retraction operations, which further allows the user to automatically convert single and appropriate slip stress with an automatic function. Realized for. In addition, the physical quality present, or the installation of other measurement sensors such as vacuum sensors, may indirectly identify the quality of the floor, this parameter being added for extrusion resistance control if necessary. It may be introduced.

Hereinafter, the present invention will be further clarified by the accompanying drawings in which embodiments are shown as a whole.
FIG. 1 shows a vacuum cleaner 1 of a hand vacuum cleaner type to which an intake nozzle 2 that is an adapter in terms of electrical technology and intake technology is assigned.
The intake nozzle 2 has an intake chamber 3 extending in the transverse direction with respect to the normal movement direction (r, r ′) and having the same configuration in the front portion of the intake nozzle 2 with respect to substantially the entire width in a normal manner. . The intake chamber 3 opens toward the floor 4 to be cleaned in the intake port 5.

An intake duct 6 extending from the intake chamber 3 facing outward to an attachment connector 7 assigned to the opposite end of the intake nozzle 2 extends. The attachment connector 7 is useful for connecting the intake nozzle 2 to the intake pipe 8 on the foot side of the vacuum cleaner 1. The attachment connector 7 has a connection part 9 in the intake nozzle 2 for individual angle adjustment from the vacuum cleaner 1 to the intake nozzle 2.

A reinforcing member 10 such as a brush ribbon type or a mounting washer type extending in parallel with the intake chamber 3 is arranged in the intake chamber 3 or the intake port 5 in front and rear of the normal movement direction (r, r ′). Has been. The reinforcing member 10 is movable upward in a known manner. Therefore, these are retracted toward the seal of the intake chamber 3 in the cleaning of a hard floor, and the bottom 11 of the intake nozzle rises from here on the floor 4 to be cleaned and substantially toward the seal system. With regard to cleaning the carpet floor, however, these reinforcing members 10 are standing.

Further, the intake nozzle 2 is disposed on the caster 12 in the leeward portion of the intake chamber 3. In the disclosed embodiment, a brush 15 that can be driven by an electric motor 13 provided in the intake nozzle 2 is disposed in the intake chamber 3. This is formed so as to be concentric with the intake chamber 3 and is formed as a brushed pipe that rotates around an axis adjusted in the extension direction of the intake chamber. The bristles of the brush 15 protrude from the bottom of the intake port 5 to the bottom 11 of the intake nozzle for brushing the floor of the carpet to be cleaned.

An intake motor and / or a blower motor 16 are provided in the vacuum cleaner 1 for generating an intake air flow. This operates a fan wheel (not shown) that is provided in the intake port 5 of the intake nozzle 2 and generates a reduced pressure. In the operation of the vacuum cleaner 1, a stress load caused by an operation (short-term operation in the arrow direction r and / or continuous operation in the arrow direction r ′) and finally acting as a push-out resistance or a pull-back resistance on the user, For active stress measurement and derived from it, in order to control the user to have a pull-back stress and / or slip stress, and for the other to ensure the optimum cleaning of the floor to be maintained. Effects on extrusion resistance are contemplated. The figure shows only one example of a possible stress measuring device 17.

And such a stress measuring device 17 may be arrange | positioned in the part of the movable rod 19 of the vacuum cleaner which has the hand grip 18. FIG. In this configuration, the stress measuring device 17 may be a normal pressure sensor 20. Instead of this, the stress measuring device 17 is also arranged in the part of the intake pipe 8, where, for example, a spring restoration system 21 like a limit switch or a continuously operating signal output device such as a potentiometer, for example. It may be provided in a configuration. Further, the stress measurement may be performed using a strain measurement ribbon 22 disposed on the plastic mounting connector 7 at the mounting connector 7 portion. Alternatively, the stress measurement may be performed on a metal plate inserted into the plastic.

The stress measurement may also be performed using a spring restoring system arranged as a cam between the attachment connector 7 for connection and the intake nozzle-housing. For a spring, a certain moment or stress may be consumed that acts as a sliding stress on the user. This path control may be performed correspondingly.
The stress measurement device 17 may also be provided at a stress control position portion in the intake nozzle 2.

As schematically shown in FIG. 3, the stress load value measured by the stress measuring device 17 is stored in the intake nozzle 2 in both the pushing operation in the direction of the arrow r and the pulling back operation in the direction of the arrow r ′. The arranged control device 23 is preferably measured and evaluated. This controls the extrusion resistance of the vacuum cleaner 1 through adjustment of the reduced pressure in the intake nozzle 2 or the intake chamber 3 in accordance with the measured stress load. This pressure reduction control may also be performed in the vacuum cleaner 1 via the intake motor and / or the blower motor 16. Instead of this, or in combination with this, the pressure reduction in the intake chamber 3 may be controlled by adjusting the auxiliary vent 24 of the intake nozzle 2. This control is performed by appropriate opening control such as slide control of the auxiliary vent 24, for example. Instead of this, or in combination with this, the pressure reduction control may also be performed by the control of the rotating plate 30 which is schematically shown in FIG. 4 and the opening control of the intake duct 6 is performed.

Further, with reference to FIG. 4, the pressure reduction control may also be performed by raising and lowering the intake nozzle 2 or the nozzle case 31. In this regard, the nozzle case 31 carrying the intake chamber 3, the brush 15, and the intake duct 6 may be movable relative to the chassis 32 carried by the caster 12 in the vertical direction. This stress measurement-dependent adjustment is performed in the disclosed embodiment by a pressure-opening bag 33 that rides on a carrier 34 supported upwardly on a chassis 32 and firmly connected to the nozzle case 31. This bag 33 is actively opened so that the rise of the nozzle case 31 and the distance between the intake port 5 and the floor 4 to be cleaned thereby increase. The vacuum is reduced.

The stress load equal to or greater than the predetermined threshold is performed by the control device 23 so as to reduce the pressure reduction, and the continuous control of the extrusion resistance and / or the pull back resistance of the vacuum cleaner 1 is performed by continuously measuring the stress load. This is done through adjustment of the pressure reduction in the intake chamber 3. In this connection, it is further proposed that if necessary, in addition to the pressure reduction control, the amount of feedback to the caster 12 is automatically determined in response to the measured pressure load. Under the switching operation of the electric motor for casters 12, the generated stress load is reduced to a value acceptable to the user.

Furthermore, the brush 14 arranged in the intake chamber 3 may be controlled with respect to the rotational speed and / or the rotational direction in accordance with the measured stress load.
The connected vacuum cleaner 1 can also detect with respect to electrical coding in the intake nozzle 2 which requires an adapter or a vent window for optimal cleaning results. In this connection, the adapter of the vacuum cleaner 1 stores an electrical detection signal. The module for electrical coding of the adapter is indicated in FIG.

The signal may include voltage, current, resistance, capacitance, pulse train, or a combination of these elements. The signal may also be replaced with that relating to self-inductance. Further, it may include a light signal connected to the control device 23 and a luminance signal used for the LED in the intake nozzle and the optical fiber in the subsequent stage.

As for carpet cleaning, the ventilation window is closed in principle. Only the maximum determined airflow is required for each carpet type in order to optimally clean the carpet. A strong air flow in the intake chamber 3 and a corresponding high pressure reduction are unavoidable (but this leads to an increase in slip stress that is not desired by the user). For example, the motor-driven caster 12 already described is automatically set. But you can.

The type of carpet floor may be detected by using the brush 14 rotating in the intake chamber 3 so that parameters such as the rotation speed and / or input current of the electric motor 13 rotating the brush 14 can be obtained. . For each required accuracy, the parameters are measured during no-load operation of the brush 14 and on the floor 4. In this way, the system may be calibrated. A single threshold value for different floors is set in the table 26 of each adapter, which is read out in the controller 23, whereby the vacuum cleaner 1 is controlled.
As a detection for the control of the extrusion resistance or as a further auxiliary variable thereof, a decompression measurement in the intake chamber 3 can also serve this.

All the disclosed features (by themselves) form a major part of the invention. In the disclosure of the present application, the disclosure content of the related and / or attendant priority application (a copy of the previous application), and the purpose and characteristics of these descriptions within the scope of the claims of the previous application, So it is completely included.

1 is a perspective view of a vacuum cleaner having an intake nozzle according to the present invention. FIG. 6 is a schematic cross-sectional view of an intake nozzle having various configurations of alternative or additional load measuring devices. 3 is a main circuit for explaining a method according to the present invention; FIG. 3 is a cross-sectional view consistent with FIG. 2 and relates to a further embodiment.

Claims (10)

A method for controlling a vacuum cleaner (1) having an intake nozzle (2), wherein an intake air flow is generated by a motor in the vacuum cleaner (1), thereby generating a reduced pressure in the intake nozzle (2). In addition, the stress load that occurs in the operation of the vacuum cleaner (1) (extrusion operation and / or pullback operation) and ultimately acts on the user as extrusion resistance or pullback resistance is measured, and each extrusion In operation, in a method in which the extrusion resistance of the vacuum cleaner (1) is automatically adjusted according to each measured stress load,
A method of driving a vacuum cleaner, characterized in that the stress load is measured in the intake nozzle (2). The adjustment is performed by changing the pressure reduction in the intake nozzle (2), and the vacuum cleaner (1) is equipped with a unique servo motor that affects the feedback amount. The method for driving a vacuum cleaner according to claim 1, wherein the feedback amount is automatically adjusted.   The method of driving a vacuum cleaner according to claim 1 or 2, characterized in that the adjustment is performed by changing the pressure reduction in the intake nozzle (2). A rotary brush (15) that can be driven by an electric motor is arranged in the intake nozzle (2), and in addition to the stress load, the input current of the brush motor (13) is evaluated. The driving method of the vacuum cleaner according to any one of claims 1 to 3. The vacuum cleaning according to any one of claims 2 to 4, wherein the pressure reduction control is performed in proportion to the measured compressive stress and / or the power of the brush motor. How to drive the machine. 6. The pressure reduction control is performed so as to be insufficiently proportional or excessively proportional to the measured compressive stress and / or the power of the brush motor. The driving method of the vacuum cleaner as described in 2. A vacuum cleaner (1) comprising an intake nozzle (2) and a fan wheel driven by a motor for generating an intake air flow that generates a reduced pressure in the intake nozzle (2), wherein the vacuum cleaner is movable Determining the stress load that acts on the part of the vacuum cleaner (1), such as the rod (19), which ultimately acts as a push-out resistance or pull-back resistance on the user and at which the compression stress is determined in each push-out operation; A stress measuring device (17) that automatically affects the extrusion resistance according to each measured stress load is provided,
A vacuum cleaner, characterized in that the stress measuring device (17) is arranged in the intake nozzle (2). The influence is performed by changing the pressure reduction in the intake nozzle (2), and the vacuum cleaner (1) further includes a unique servo motor for adjusting the feedback amount, and changes the pressure reduction as necessary. In addition, the vacuum cleaner is characterized in that the feedback amount is automatically changed. 9. A vacuum cleaner according to claim 7 or 8, characterized in that the vacuum cleaner (1) comprises a unique servo motor that influences the feedback amount. The vacuum cleaner according to any one of claims 7 to 9, wherein a feedback amount is automatically changed as needed in addition to the adjustment of the pressure reduction.