KR20190117173A - Cleaner and controlling method - Google Patents

Abstract

The present invention relates to a vacuum cleaner and a control method therefor. The vacuum cleaner comprises: a suction device including a brush disposed at a suction port for sucking dust, and an operating part; and a main body connected to the suction device by means of a hose so as to collect the dust sucked through the suction device, and thus the present invention sets suction intensity in correspondence to the input of the operating part, varies operating power applied according to the suction intensity so as to change the rotational speed of the brush, thereby enabling the rotational speed of the brush to be easily controlled, and controls the rotation of the brush so as to allow a foreign material on the floor to be in an easily sucked-up state, thereby greatly improving the sucking effect on the foreign material.

Description

Cleaner and controlling method

The present invention relates to a cleaner and a method of controlling the same, and relates to a cleaner and a method of controlling the same, which move according to the movement of a handle and control suction force on foreign substances.

A vacuum cleaner is a device that sucks in dust from the floor. In general, the vacuum cleaner includes a suction device having a suction port for intake air, and a main body connected to the suction device through a hose forming an intake flow path. The main body is provided with an intake fan for forming a negative pressure so that the air can be sucked through the inlet, the suction device or the main body is provided with a dust collecting portion collecting dust introduced through the hose.

The suction device incorporates a brush or the like into the suction port to effectively suck foreign substances.

As the suction force is generated, the brush located at the suction port rotates to assist the foreign matter on the bottom surface to be sucked more effectively.

The brush rotates in response to the key input of the handle. The brush is provided with a drive for a separate rotation.

However, the brush does not change the degree of rotation in accordance with the strength of the suction force, there is a problem of simple rotation.

In order to control the rotational speed of the brush in response to this problem, there is a problem in that a means for adjusting the speed on the suction device side should be further provided.

In addition, since there is a possibility of heat generation from the means for adjusting the speed, various components must be additionally configured in the narrow suction mechanism, such as a heat dissipation design for this purpose, and an improvement is needed because it may malfunction due to noise in the circuit.

A cleaner and a control method thereof according to the present invention provide a cleaner and a method of controlling the same, which control a suction force in response to an input of a handle and control a brush rotation of a suction mechanism.

Cleaner according to an embodiment of the present invention is connected to the suction device and the suction device and the suction device including a suction nozzle disposed in the suction port for suctioning dust and a brush that rotates, the operation portion for adjusting the suction strength And a main body for collecting dust sucked from the suction device, wherein the main body is configured to apply an operating power of a first voltage to the suction nozzle according to a suction strength set corresponding to an input of the operation unit; And a second driving unit configured to apply an operating power of a second voltage to the suction nozzle, wherein the suction nozzle has a first speed or a second speed depending on the operating power applied by any one of the first driving unit and the second driving unit. The brush is rotated at two speeds.

And a power supply unit for supplying operating power to the main body and the suction device, wherein the first driving unit and the second driving unit apply a feedback signal to the power supply unit, and the power supply unit is any one of the first driving unit and the second driving unit. The first voltage or the second voltage is provided to the suction nozzle according to a feedback signal input from one.

The suction nozzle further comprises a nozzle motor for providing a rotational force to the brush, the nozzle motor is characterized in that it operates in accordance with the size of the operating power source.

The main body further includes a control unit for setting the suction strength in response to an input of the operation unit, wherein the control unit causes the first driving unit to operate when the suction strength is less than a set value, and the suction strength is greater than or equal to the set value. The second driving unit is characterized in that for operating.

The main body may move in accordance with the suction mechanism in response to the movement of the suction mechanism.

In addition, the present invention, a suction nozzle including a brush disposed in the suction port for suctioning dust and assists the suction of foreign matter through a rotation operation, and an operation unit for adjusting the suction strength, and the suction mechanism and the hose A main body configured to collect dust sucked from the suction mechanism, the main body including a suction force providing unit for forming a negative pressure for dust suction, and suction for dust suction through the suction port in response to an input of the operation unit; A control unit for setting the strength and controlling the negative pressure of the suction force providing unit and a nozzle driving unit for changing the rotational speed of the brush in response to the suction strength.

The brush may be rotated at a first speed or a second speed in correspondence with the voltage level of the operating power applied from the nozzle driver.

The suction nozzle further comprises a nozzle motor for providing a rotational force to the brush, the nozzle motor is characterized in that it operates in accordance with the size of the operating power applied from the nozzle driver.

The nozzle driver includes a first driver for applying an operating power of a first voltage to the suction nozzle and a second driver for applying an operating power of a second voltage to the suction nozzle in response to the suction strength.

The controller applies a first signal to the first driver when the suction strength is less than a set value, and applies a second signal to the second driver when the suction strength is greater than or equal to the set value.

In addition, the control method of the present invention, the step of setting the suction strength for the dust suction in accordance with the input of the operation unit formed in the handle, the suction force is generated in response to the suction strength and the dust sucked through the suction mechanism is collected in the main body Step, when the brush disposed in the suction mechanism corresponding to the suction strength is rotated at a first speed and the suction strength is increased by the operation unit, the brush is rotated at a second speed faster than the first speed Steps.

Applying an operating power source of a first voltage to a nozzle motor providing a rotational force to the brush in response to the suction strength and rotating the brush at the first speed by the operating power source of the first voltage; do.

When the suction intensity is increased, applying an operating power of a second voltage to a nozzle motor providing a rotational force to the brush and rotating the brush at the second speed by the operating power of the second voltage. Include.

The cleaner and the control method of the present invention, by controlling the suction force through the suction mechanism in accordance with a signal input from the handle of the suction mechanism of the cleaner and by controlling the rotation of the brush installed in the suction mechanism, the cleaning performance by the brush is improved There is.

The present invention can easily change the rotational speed of the brush by varying the operating power for operating the brush, except for unnecessary configuration.

According to the present invention, the foreign matter on the bottom surface is easily inhaled through the rotation of the brush, and the suction effect on the foreign matter is greatly improved.

1 is a perspective view showing the configuration of a cleaner according to an embodiment of the present invention.
2 is a perspective view showing the configuration of the suction mechanism of FIG.
3 is a diagram illustrating a configuration for supplying power to the suction device of FIG. 1.
4 is a block diagram schematically illustrating a control configuration of a cleaner according to an embodiment of the present invention.
5 is a block diagram showing a control configuration for controlling the suction nozzle according to an embodiment of the present invention.
FIG. 6 is a diagram illustrating a first embodiment of the nozzle driver of FIG. 5.
FIG. 7 is a diagram illustrating a second embodiment of the nozzle driver of FIG. 5.
8 is a flowchart illustrating a control method of a cleaner according to an embodiment of the present invention.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout. In addition, the control unit and each unit of the present invention may be implemented by one or more processors, may be implemented by a hardware device.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing the configuration of a cleaner according to a first embodiment of the present invention.

As shown in FIG. 1, the cleaner of the present invention includes a suction device 100 that is movable and sucks dust, collects dust sucked by the suction device 100, and moves the main body 200. Include. The main body 200 runs while following the suction device 100.

The suction device 100 and the main body 200 are connected through the hose 300, and the air sucked by the suction device 100 flows into the main body 200 through the hose 300. The main body 200 may include a dust collecting container 219 for collecting dust floating in the air introduced through the hose 300.

The suction device 100 is formed with an intake port (not shown) through which the outside air is sucked, and the main body 200 may provide a suction force through the hose 300 to allow the outside air to be sucked through the suction port. The suction device 100 is moved along the floor by the user's operation.

The suction mechanism 100 includes a suction nozzle 120 having a suction port through which dust is sucked, an intake pipe 130 extending from the suction nozzle 120 to form a passage through which the dust sucked through the suction port moves, It may include a handle 140 disposed on the upper portion of the engine 130. The suction device 100 may be moved by pushing or pulling while the user grips the handle 140. The suction nozzle 120 is moved in the state in which the suction port toward the bottom of the cleaning area, thereby sucking the dust on the floor.

The intake pipe 130 forms a passage through which the air sucked through the suction nozzle 120 is moved. The intake pipe 130 may include a lower pipe 131 connected to the suction nozzle 120, and an upper pipe 132 provided to be able to slide with respect to the lower pipe 131. As the upper tube 132 slides along the lower tube 131, the entire length of the intake pipe 130 may be changed. Handle 140 is preferably located higher than the user's waist during cleaning, in this embodiment was provided in the upper tube (132).

The hose 300 is introduced into the air through one end connected to the intake pipe 130, and the discharge is made through the other end connected to the main body 200. The hose 300 may be bent according to the movement of the suction device 100 by having flexibility. Therefore, the position of the suction device 100 with respect to the main body 200 may vary according to the user's operation, but because the movement of the suction device 100 is made within the length of the hose 300, the suction device 100 ) May not be further away from the main body 200 by a predetermined distance.

The hose 300 includes a body connection part 320 connected to the body 200. The body connection part 320 is integrally moved with the body 200 as a rigid body. The main body connector 320 may be detachably coupled to the main body 200.

The main body 200 may include a case 211 forming an appearance and at least one wheel 212 and 213 rotatably installed on the case 211. The main body 200 may be changed in direction as well as going straight by the wheels 212 and 213. In the present embodiment, left and right wheels 213 and left and right wheels 213 are provided on the left and right sides of the case 211, respectively, and the direction is changed according to the difference in the rotational speed of the left wheel 212 and the right wheel 213.

The main body 200 may include a driving unit 250 for rotating the left wheel 212 and the right wheel 213, and the driving unit 250 may include at least one motor. According to an embodiment, a pair of motors for driving the left wheel 212 and the right wheel 213 may be provided. Alternatively, one motor and the driving force of the motor may be provided to the left wheel 212 and the right wheel 213. It may include a power transmission means for transmitting. In the former case, the direction change of the main body 200 is made according to the rotational speed difference of each motor, and in the latter case, it is made according to the rotational speed difference of the left wheel 212 and the right wheel 213 by the power transmission means. have. In addition, the driving unit 250 may include a clutch for transmitting the driving force of the motor to the wheels (212, 213).

The main body 200 may include a suction force providing unit 240. The suction force providing unit 240 forms a negative pressure so that the suction mechanism 100 can suck the outside air, and may include a fan motor (not shown) and a fan (not shown) rotated by the fan motor. The fan motor may be driven by the control of the suction controller 234 of the controller 230. The suction force providing unit 240 may be provided in the case 211, and in addition, a dust collecting container 219 collecting dust sucked through the hose 300 may be disposed in the case 211.

The suction device 100 may include an operation unit 110. The operation unit 110 receives various control commands from the user, and in particular, it is possible to control the operation of the suction force providing unit 240 through the operation unit 110. The operation unit 110 is preferably arranged in such a position that can be manipulated by the user's thumb holding the handle 140, in this aspect, in the embodiment is disposed on the handle 140, but is not limited thereto. It does not have to be. According to a control command input through the operation unit 110, the suction control unit 234 may control the operation of the suction force providing unit 240.

The main body 200 follows the suction mechanism 100 to travel.

The main body 200 may travel by following the suction mechanism by analyzing the tension of the hose 300 and the direction of the hose to calculate the position of the suction mechanism.

The main body 200 includes an image acquisition unit (not shown) to capture a marker (not shown) irradiated from the suction device 100, thereby analyzing the position and shape of the marker to estimate the position of the suction device 100. Therefore, the suction device can be driven following the suction device.

In addition, the main body 200 may receive the position signal transmitted from the suction device 100 to calculate the position of the suction device, and may follow the suction device to travel. The suction device transmits a position signal through signals in the form of UWB, infrared, ultrasonic, and laser, and the main body 200 follows the suction device by calculating the position and distance of the suction device based on the received position signal. I can drive.

The main body 200 may travel by following the suction device by combining any one or a plurality of following methods, and may also travel by following the suction device by applying various methods not specified.

2 is a perspective view showing the configuration of the suction mechanism of FIG.

As shown in FIG. 2, the suction device 100 includes a suction nozzle 120 forming a suction port.

The suction nozzle 120 includes a nozzle case 121 forming an appearance, a brush 123 disposed in the suction nozzle and provided in the nozzle case 121, and a nozzle motor 124 rotating the brush.

The nozzle case 121 has a suction nozzle formed at a lower portion thereof, and protects the brush 123 provided therein from external impact. In addition, the nozzle case 121 forms a space for the brush 123 to rotate.

The nozzle case 121 may be formed of a transparent material so that a portion of the upper surface thereof is exposed so that the shape of the brush 123 disposed therein is exposed.

The nozzle case 121 may be opened by any one side is separated. The nozzle case is opened as the fixing part provided on one side is released, and a brush disposed therein may be separated from the nozzle case.

The brush 123 rotates in the nozzle case and allows foreign substances on the bottom surface to move to the suction nozzle. The brush 123 rotates around the rotation shafts formed on the left and right sides of the nozzle case.

The brush 123 may be a brush brush provided with a plurality of brushes made of a parent material, or a melt brush equipped with a fusion fabric.

As the brush 123 rotates, the foreign substance is moved to the suction port by sweeping the foreign substance to the bottom surface, so that the foreign substance is collected into the dust collecting part by the suction force. In addition, the brush 123 may form an air flow in the nozzle case 121 through a centrifugal force acting on the brush as the brush 123 rotates. Accordingly, the suction force can be increased by the airflow generated by the centrifugal force in addition to the physical force caused by the rotation of the brush.

The brush 123 may be separated from the nozzle case.

The nozzle motor 124 is formed on any one side of the left side or the right side of the nozzle case 121 in which the rotating shaft of the brush is formed. If necessary, the nozzle motor may be provided on both sides of the nozzle case. do. The nozzle motor is operated by operating power supplied from the main body, and operates or stops in response to the key input of the handle.

The nozzle motor 124 is configured to rotate the brush as the drive shaft (not shown) is coupled to the brush and the drive shaft rotates. The nozzle motor may have a variable rotational speed in response to the suction force set by the handle.

3 is a diagram illustrating a configuration for supplying power to the suction device of FIG. 1.

As shown in FIG. 3, the hose 300 connects the suction device 100 and the main body 200.

The hose 300 allows foreign substances such as dust sucked from the suction device 100 to flow into the main body 200. The hose 300 may be bent according to the movement of the suction device 100 by having flexibility. The hose 300 is in the form of a corrugated pipe, it can be extended or reduced a certain distance within the hose length.

The hose 300 is provided with a power line 321 for supplying power to the suction mechanism therein. At least two power lines 321 are provided.

The power line 321 may be inserted therein to rotate the outer diameter of the hose along the corrugated pipe of the hose 300. As the power line is disposed to rotate along the outer diameter of the lake, the power line may be arranged so as not to be disconnected even if the hose is stretched or bent. In some cases, the power line 321 may be inserted into the power case, including a power case (not shown) to prevent disconnection by external impact.

The power line 321 supplies power to the operation portion of the handle. In addition, power may be supplied to the nozzle motors 124 and 150 installed at the suction port of the suction device.

The main body 200 supplies operating power for the operation of the operation unit 110, the position information transmitting unit 190, and the sensor unit 180 of the handle, and also supplies the operating power of the nozzle motor 150 through a power line. Supply. The nozzle motor 150 may be connected to at least two power lines, and may operate at different speeds according to operating power of different voltages. The operation of the brush 123 is variable in response to the operation speed of the nozzle motor.

Therefore, the position of the suction device 100 with respect to the main body 200 may vary according to the user's operation, but because the movement of the suction device 100 is made within the length of the hose 300, the suction device 100 ) May not be further away from the main body 200 by a predetermined distance.

The hose 300 includes a body connection part 320 connected to the body 200. The body connection part 320 is integrally moved with the body 200 as a rigid body. The body connection part 320 may be detachably coupled to the body 200.

4 is a block diagram schematically illustrating a control configuration of a cleaner according to an embodiment of the present invention.

As shown in FIG. 4, the cleaner includes a suction device 100 and a main body 200.

The suction device 100 includes a position information transmitter 190, a sensor unit 180, an operation unit 110, and a nozzle motor 150.

The operation unit 110 receives various control commands from the user, and in particular, includes a switch for setting the suction force. The operation unit 110 transmits an input control command to the control unit 230, and accordingly, the control unit 230 controls the operation of the suction force providing unit 240 according to the control command. The operation unit 110 is preferably arranged so that the position can be operated by the thumb of the user holding the handle 140.

For example, the operation unit 110 may be composed of a sliding key or a plus key and a miner ski. In the case of the sliding key, the suction strength is set according to the position of the sliding key. In addition, when the plus key and the minus ski is provided, the suction strength increases in proportion to the number of presses of the plus key, and the suction strength may decrease according to the number of presses of the minus ski.

The sensor unit 180 includes a plurality of sensors to detect the movement of the suction device 100. The sensor unit 180 detects whether the handle is moved and whether the handle is gripped by the user. In addition, the sensor unit 180 detects a change in the inclination of the intake device 100, in particular, the inclination of the intake pipe 130 as the intake device 100 is operated by a user, and inputs it to the controller 230.

The position information transmitting unit 190 transmits a position information signal indicating the position of the suction mechanism 100. The location information transmitter 190 may transmit one or a plurality of location information signals.

The location information transmitter 190 may transmit the location information signal to the infrared, ultrasonic, laser, or UWB.

The position information transmitter 190 may transmit the position information signal at predetermined time intervals, and may also transmit the position information signal in response to the position change and the movement of the suction mechanism 100.

In addition, the position information transmitter 190 may output a marker as a position information signal in a predetermined form as needed. The technology that the main body 200 follows the movement of the suction device 100 is not limited thereto, and various methods may be applied.

The main body 200 may receive the position information signal to determine the movement of the suction device 100, and may follow the movement of the suction device to move.

The main body 200 includes a position information receiver 220, an obstacle detecting unit 260, a driving unit 250, a suction force providing unit 240, a nozzle driving unit 280, and a power supply unit 290, and controls overall operations. It includes a control unit 230.

In addition, the main body 200 may further include a storage unit (not shown) in which data for calculating and following the position of the suction device 100 based on the position information signal or data sensed through the sensor unit is stored. .

The storage unit records various types of information necessary for controlling the cleaner, and the storage unit stores data for calculating an operation mode of the cleaner, data sensed while driving, a moving distance according to the cleaner driving, and a position. The storage unit may include a volatile or nonvolatile recording medium. The recording medium stores data that can be read by a microprocessor, and includes a hard disk drive (HDD), a solid state disk (SSD), a silicon disk drive (SDD), a ROM, a RAM, a CD-ROM, a magnetic Tapes, floppy disks, optical data storage devices, and the like.

The driving unit 250 controls the main body 200 to move by rotating the left wheel 212 and the right wheel 213. The driving unit 250 includes at least one motor to control its operation.

The suction force providing unit 240 forms a negative pressure so that the suction mechanism 100 can suck the outside air. The suction force providing unit 240 may include a fan motor (not shown) and a fan (not shown) rotated by the fan motor.

The obstacle detecting unit 260 detects an obstacle located in a moving direction of the main body and inputs it to the controller. In this case, the obstacle detecting unit 260 may detect an obstacle by using an ultrasonic wave, a laser, or a pattern light.

The power supply unit 290 charges the battery with commercial power, and supplies operating power of a predetermined size to each unit from the charged battery. The power supply unit 290 may include an SMPS for supplying a constant voltage required by each unit.

The nozzle driving unit 280 changes the operating power supplied from the power supply unit 290 according to the setting of the operation unit 110 and supplies it to the nozzle motor 150.

The nozzle driver 280 applies voltages of different magnitudes to the nozzle motor in response to the setting of the operation unit 110, in particular, the suction strength. The nozzle driver 280 divides the suction strength into a plurality of stages, and applies a voltage having a predetermined magnitude to the nozzle motor 150 according to the stage.

Accordingly, the brush 123 connected to the nozzle motor 150 operates at different rotational speeds according to the suction strength.

The control unit 230 based on the position information signal received by the position information receiving unit 220, in accordance with the change of the position of the suction mechanism 100, the main body 200 to follow the suction mechanism 100 to run the traveling unit ( 250). In addition, the controller 230 controls the suction force providing unit 240 so that dust is collected by the suction mechanism 100, and the main body changes the moving direction in response to the detection result of the obstacle detecting unit 260.

The controller 230 includes a position setting unit 231, a driving operation setting unit 232, a driving control unit 233, a suction control unit 234, and a suction nozzle control unit 235.

The location information receiver 220 receives the location information signal transmitted from the location information transmitter 190 of the suction mechanism 100. The location information receiver 220 may be provided in one or a plurality. When a plurality of location information receivers 220 are provided, the plurality of location information receivers may receive one signal transmitted from the location information transmitter.

The location information receiver 220 includes a reception module for receiving at least one location information signal of an infrared ray, an ultrasonic wave, a laser, and a UWB in response to the location information transmitter 190.

The position setting unit 231 calculates the position of the suction device by analyzing the position information signal received through the position information receiver 220.

For example, the position setting unit 231 is one of the position information receiver 220 is transmitted from the position information transmitter 190 based on the installation position and the installation interval of the position information receiver 220 when a plurality of position information receivers 220 are provided. When the signal is received by the plurality of position information receivers, the distance may be calculated through the received signal, and the distance to the suction mechanism and the relative position of the suction mechanism may be calculated based on the installation position of the position information receiver.

The distance between the suction mechanism and the main body is the distance from the positional information transmitter of the suction mechanism to the main body. In addition, when one location information receiver is provided, the distance to the location information receiver may be the center point.

The position setting unit 231 applies the calculated position of the suction mechanism to the driving operation setting unit 232.

The driving operation setting unit 232 sets the driving direction and the driving path so that the main body travels by following the suction mechanism based on the position of the suction mechanism calculated by the position setting unit 231. The driving operation may be a distance to which the main body 200 moves and / or a direction to move based on the distance information and / or direction information.

In addition, the driving operation setting unit 232 is a driving operation or driving path that the main body 200 can follow the suction mechanism 100 by avoiding the obstacle based on the obstacle information obtained by the obstacle detecting unit 260. Set.

The driving operation setting unit 232 inputs the setting for the driving operation of the main body 200 to the driving control unit 233.

The travel controller 233 controls the travel unit 250 according to the set travel operation, and accordingly, the main body 200 follows the suction mechanism 100.

As the driving unit 250 is controlled by the driving control unit 233, the main body 200 follows the suction mechanism 100 while moving in accordance with the set driving operation or switching the moving direction.

Here, the movement of the main body 200 does not have to be made until the suction device 100 is reached. Since the user is typically located between the main body 200 and the suction device 100, the main body 200 only needs to move to a position spaced a predetermined distance from the suction device 100. For example, when the length of the hose 300 is 1 meter (m), the main body 200 may be stopped after moving to a position 40 to 60 centimeters (cm) away from the suction device 100. The distance between the main body 200 and the suction device 100 is based on the measurement on the floor, and this distance may be obtained based on the position of the suction device calculated from the location information signal.

When the operation start command is input by the operation unit 110, the suction control unit 234 operates the suction force providing unit 240 to generate the suction force. In addition, the suction control unit 234 controls the suction force providing unit 240 so that the suction force is changed when the suction strength (level) is changed by the operation unit 110.

The suction nozzle controller 235 changes the rotational speed of the brush connected to the nozzle motor in response to the suction strength set by the operation unit 110.

The suction nozzle controller 235 divides the set suction strength into a plurality of steps, and applies a control signal to the nozzle driver 280 step by step.

The nozzle driving unit 280 includes a plurality of driving units to apply a voltage having a predetermined magnitude to the nozzle motor 150 in response to a control signal applied from the suction nozzle control unit 235.

For example, the suction nozzle controller 235 applies the first signal to the nozzle driver 280 when the suction force is less than the predetermined value, and applies the second signal to the nozzle driver 280 when the suction force is more than the predetermined value. Accordingly, the nozzle driving unit operates one of the driving units according to the control signal so that the operating power of the first voltage or the second voltage corresponding thereto is applied to the nozzle motor 150.

The nozzle driver 280 may apply a first voltage in response to the first signal and apply a second voltage to the nozzle motor in response to the second signal. In this case, the first voltage and the second voltage applied to the nozzle motor are just examples, and according to a step, a third voltage or a fourth voltage may be applied. The nozzle driver 280 applies a different feedback signal to the power supply unit 290 according to the control signal of the suction nozzle control unit 235 so that the operating power of the first voltage or the second voltage is supplied from the power supply unit to the nozzle motor.

5 is a block diagram showing a control configuration for controlling the suction nozzle according to an embodiment of the present invention.

As shown in FIG. 5, the nozzle driving unit 280 is connected to the power supply unit 290, and converts the operating power supplied from the power supply unit 290 according to the control signal of the suction nozzle control unit 235 to supply a voltage having a predetermined magnitude. Through the power output terminal (VO) to be applied to the nozzle motor 150.

The nozzle driver 280 includes a plurality of drivers that output different voltages, respectively.

The nozzle driver 280 includes a first driver 281 that outputs a first voltage to the nozzle motor 150, and a second driver 282 that outputs a second voltage. The second voltage is higher than the first voltage.

Hereinafter, the nozzle driver 280 will be described with an example including the first and second drivers, but may further include a third driver or a fourth driver according to the magnitude of the voltage applied to the nozzle motor. Specifies that

The suction nozzle controller 236 applies the first signal S1 or the second signal S2 to the nozzle driver 280 in response to the suction strength set by the operation unit 110.

When the first signal S1 is applied, the first driver 281 operates to output the operating power of the first voltage to the nozzle motor 150, and when the second signal S2 is applied, the second driver 282. Is operated to output the operating power of the second voltage to the nozzle motor.

The nozzle driving unit 280 may convert the operating power of the power supply unit 290 to be applied to the nozzle motor. In addition, the nozzle driver 280 may apply a predetermined signal to the power supply unit so that the operating power of the first voltage or the second voltage is output from the power supply unit 290.

The nozzle driver 280 may be provided in the feedback circuit of the power supply unit to apply the feedback signal FS to the power supply unit 290.

Accordingly, the nozzle motor 150 is operated by the operating power of the first voltage or the second voltage. The brush 123 rotates at the first speed by the first voltage and rotates at the second speed by the second voltage. The second speed is a rotational speed higher than the first speed.

The nozzle driver 280 may be configured as shown in FIGS. 6 and 7.

FIG. 6 is a diagram illustrating a first embodiment of the nozzle driver of FIG. 5.

The nozzle driver 280 includes a first switch TR1, a second switch TR2, a plurality of resistors R1 to R6, a diode S4, and a capacitor C1 connected to the power supply unit 290. In addition, the nozzle driver 280 may further include a photodiode D5 for applying a feedback signal FS to the power supply unit 290 at a connection point connected to the power supply unit 290. A circuit composed of a plurality of resistors and capacitors may be further provided between the photodiode D5 and the power supply unit 290.

According to the first embodiment, the first driver 281a includes a first switch TR1, a first resistor R1, a third resistor R3, and a fourth resistor R4.

The second driver 282a according to the first embodiment includes a second switch TR2, a second resistor R2, a third resistor R3, and a fourth resistor R4.

The third resistor, the fourth resistor, and other resistors, diodes, and capacitors are commonly applied to the first driver 281a and the second driver 282a.

The first switch TR1 is operated by the first signal S1 applied from the suction nozzle controller 235. The first resistor R1 is connected to one end of the first switch, and the third resistor R3 and the fourth resistor R4 are connected to the other end of the first switch.

One end of the second switch TR2 is connected to the second resistor R2 and the other end is connected to the third resistor R3 and the fourth resistor R4.

The fourth resistor is connected to the capacitor C1. One end of the third and fourth resistors is connected to the diode D4, respectively. Diode D4 is a zener diode. The diode D4 has an anode connected to ground and a third resistor, and a cathode connected to a sixth resistor R6 and a capacitor C1.

The first resistor R1 and the second resistor R2 are connected to the power output terminal VO of the power supply unit 290.

When the first signal S1 is applied, the first switch is turned on so that a current flows from the first resistor R1 to the third resistor R3, and the first resistor R1 and the third resistor R3 are turned on. The current is applied according to the resistance ratio.

By the operation of the first switch TR1, a signal for outputting the first voltage by operating the photodiode D5 by the applied current is applied to the power supply unit 290 as the feedback signal FS, and accordingly The operating power of the first voltage is supplied from the power supply unit 290 to the nozzle motor through the power output terminal VO.

When the second signal S2 is applied, the second switch TR2 is turned on so that a current flows from the second resistor R2 to the third resistor R3, and the resistance of the second resistor and the third resistor is applied. Depending on the ratio, a current is applied.

The current applied by the first driver and the second driver operates the photodiode D5 connected to the power supply unit 290, and as the feedback signal FS is applied to the power supply unit, the second voltage from the power supply unit 290 is applied. Operating power is supplied to the nozzle motor through the power output stage (VO).

The nozzle driver 280 operates the photodiode D5 by a current applied according to the resistance ratio of the first resistor and the third resistor, and the resistance ratio of the second resistor and the third resistor, so that the feedback signal FS having a different magnitude. As is applied to the power supply unit 290, it is possible to output a different magnitude of voltage to the suction nozzle.

The magnitudes of the feedback signals FS applied to the power supply unit 290 by the first driver and the second driver are different, and thus operating power of the first voltage or the second voltage may be output to the nozzle motor.

FIG. 7 is a diagram illustrating a second embodiment of the nozzle driver of FIG. 5.

The nozzle driver 280 according to the second exemplary embodiment may include an eleventh switch TR11, a twelfth switch TR12, an eleventh resistor R11 to a twelfth resistor R12, an eleventh diode ZD1, and a twelfth diode. (ZD2), the thirteenth diode (D3).

The first driver 281b of the nozzle driver according to the second embodiment includes an eleventh switch TR11, an eleventh diode ZD1, an eleventh resistor R11, and a twelfth resistor R12.

The second driver 282b includes a twelfth switch TR12, a twelfth diode ZD2, an eleventh resistor R11, and a twelfth resistor R12.

The thirteenth diode D3, the eleventh resistor R11, and the twelfth resistor R12 are commonly applied to the first and second drivers.

One end of the eleventh switch TR11 is connected to the eleventh diode ZD1, and the other end thereof is connected to the eleventh resistor R11. One end of the eleventh diode ZD1 is connected to the eleventh switch TR11 and the other end thereof is connected to the thirteenth diode D3.

One end of the twelfth switch TR12 is connected to the twelfth diode ZD2, and the other end thereof is connected to the eleventh resistor R11. One end of the twelfth diode ZD2 is connected to the twelfth switch TR12 and the other end thereof is connected to the thirteenth diode D3.

One end of the eleventh resistor R11 is connected to the eleventh switch TR11 and the twelfth switch TR12, and the other end thereof is connected to the twelfth resistor R12 and the power supply unit 290. One end of the twelfth resistor R12 is connected to the eleventh resistor and the other end thereof is connected to the power supply unit 290. A plurality of resistors, capacitors, and diodes may be further connected between the eleventh resistor and the twelfth resistor and the power supply unit.

When the first signal S1 is applied from the suction nozzle controller to the nozzle driver, the eleventh switch TR11 is activated (ON), and through the eleventh or twelfth resistor depending on whether the eleventh diode ZD1 is turned on, The feedback signal FS is applied to the power supply unit.

In addition, when the second signal S2 is applied from the suction nozzle control unit to the nozzle driving unit, the twelfth switch TR12 is turned on to apply the eleventh or twelfth resistor depending on whether the twelfth diode ZD12 is turned on. Through this, the feedback signal FS is applied to the power supply unit.

The eleventh diode ZD1 and the twelfth diode ZD2 are Zener diodes having different magnitudes of a conductive voltage. The eleventh diode ZD1 and the twelfth diode ZD2 have an anode connected to the switch and a cathode connected to the cathode of the thirteenth diode D3.

That is, when the eleventh switch or the twelfth switch is turned on, a voltage is applied in the reverse direction from the thirteenth diode to the eleventh diode ZD1 or the twelfth diode ZD2.

The eleventh diode ZD1 and the twelfth diode ZD2 are conducted when the voltage applied in the reverse direction is greater than the set breakdown voltage, so that current flows from the thirteenth diode to the eleventh resistor. Since the eleventh diode ZD1 and the twelfth diode ZD2 have different magnitudes of the conducted voltage (breakdown voltage), different feedback signals may be applied to the power supply unit.

The nozzle driver may change the magnitude of the feedback signal FS by the eleventh diode ZD1 and the twelfth diode ZD2 by operating the eleventh or twelfth switch according to the control signal. In response to the feedback signal, the power supply unit provides an operating power source of the first voltage or the second voltage to the nozzle motor of the suction nozzle.

8 is a flowchart illustrating a control method of a cleaner according to an embodiment of the present invention.

As shown in FIG. 8, the power supply unit supplies operation power to each unit of the cleaner by the operation unit 110, and the cleaner starts operation (S310).

By the setting of the operation unit 110, the suction intensity of the suction port through the suction mechanism is input (S320). The suction strength may be set according to the sliding degree of the operation unit, the number of key presses of the operation unit, and the type of key selected by the operation unit according to the structure of the operation unit.

For example, when the operation unit is composed of a plus key and a miner ski, the suction strength may increase in proportion to the number of pressing of the plus key, and the suction strength may decrease according to the number of pressing of the minus key.

The suction control unit 234 controls the suction force providing unit 240 according to the input of the operation unit 110. The suction force providing unit 240 forms a negative pressure, and the suction mechanism 100 sucks the outside air through the suction port.

In addition, by the input of the operation unit 110, the suction nozzle control unit 235 operates the nozzle driving unit 280 in response to the suction strength. The nozzle driver 280 applies a voltage according to the suction strength to the nozzle motor 150.

Accordingly, the nozzle motor 150 of the suction nozzle 120 rotates at a predetermined speed according to the applied voltage, and the brush 123 rotates by the operation of the nozzle motor (S330).

At this time, the suction nozzle controller 235 applies the second signal to the nozzle driver when the suction strength is greater than or equal to the set value (S340), and applies the first signal to the nozzle driver when the suction strength is less than the set value.

The nozzle driver applies a first voltage to the nozzle motor by the first signal, and the nozzle driver applies a second voltage to the nozzle motor by the second signal.

The nozzle motor rotates at the first speed when the first signal is applied (S350), and rotates at the second speed when the second signal is applied (S360).

In response to the suction strength set by the operation unit, the brush 123 rotates at a predetermined rotational speed and allows foreign substances on the floor to be sucked at the same time as suction of the outside air.

Therefore, the present invention can control the rotational speed of the brush of the suction nozzle in response to the suction force is changed in accordance with the setting of the operation unit while the main body follows the suction mechanism. As the rotation speed of the brush is changed, the inhalation of foreign substances becomes easy.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention.

100: suction mechanism 110: operation unit
120: suction nozzle 123: brush
124, 150: nozzle motor 200: main body
220: location information receiver 230: controller
231: position setting unit 232: driving operation setting unit
233: driving control unit 234: suction control unit
235: suction nozzle control unit 240: suction force providing unit
250: driving unit 260: obstacle detecting unit
280: nozzle drive unit

Claims (16)

A suction mechanism including a suction nozzle disposed at a suction port for sucking dust and a brush which rotates, and an operation unit to adjust suction strength; And
A main body connected to the suction device and a hose to collect dust sucked from the suction device,
The main body,
According to the suction strength set corresponding to the input of the operation unit
A first driver configured to apply an operating power of a first voltage to the suction nozzle; And
A second driver configured to apply an operating power of a second voltage to the suction nozzle,
The suction nozzle,
And the brush rotates at a first speed or a second speed according to an operating power applied by any one of the first driving part and the second driving part. The method of claim 1,
And a power supply unit for supplying operating power to the main body and the suction device.
The first driver and the second driver applies a feedback signal to the power supply unit,
And the power supply unit provides the first voltage or the second voltage to the suction nozzle according to a feedback signal input from one of the first driving unit and the second driving unit. The method of claim 1,
The suction nozzle further comprises a nozzle motor for providing a rotational force to the brush,
The nozzle motor is a cleaner, characterized in that to operate in accordance with the size of the operating power source. The method of claim 1,
The main body further includes a control unit for setting the suction strength in response to the input of the operation unit,
And the control unit causes the first driving unit to operate when the suction strength is less than a set value, and to operate the second driving unit when the suction strength is above the set value. The method of claim 4, wherein
The first driving unit and the second driving unit comprises a first switch and a second switch which is operated by a control signal applied from the control unit, characterized in that the cleaner comprises a plurality of resistors. The method of claim 2,
The first driving unit includes a first switch operated by a first signal among control signals for operation,
The second driving unit may include a second switch operated by a second signal among the control signals.
The first driving unit and the second driving unit, a cleaner including a plurality of resistors connected to the first switch or the second switch. The method of claim 6,
The first driver and the second driver,
When any one of the first switch and the second switch is turned on according to the control signal, a resistance ratio formed by a plurality of resistors included in the first driver and the second driver is changed to a predetermined size. Cleaner, characterized in that the feedback signal by the current is applied to the power supply. The method of claim 2,
The first driving unit may include a first switch operating according to a first signal among control signals for operation; And
A first diode connected to the first switch; Including,
The second driving unit may include a second switch operating according to a second signal of the control signals; And a second diode connected to the second switch. Including;
The first driving unit and the second driving unit, a cleaner including a plurality of resistors connected to the first switch or the second switch. The method of claim 8,
The first driver and the second driver,
When one of the first switch and the second switch is turned on according to the control signal, the first diode or the second diode is operated so that a feedback signal according to a current having a predetermined magnitude is fed back to the power supply unit. Cleaner characterized in that. The method of claim 2,
And the power supply unit provides operating power to the suction nozzle through a plurality of power lines inserted into the hose according to the feedback signal input from one of the first driving unit and the second driving unit. The method of claim 10,
The power supply line, the cleaner, characterized in that disposed to rotate along the outer diameter of the hose. Setting suction strength for dust suction according to an input of an operation unit formed on the handle;
Generating suction force corresponding to the suction strength to collect dust sucked through the suction mechanism in the main body;
Rotating the brush disposed at the suction mechanism at a first speed corresponding to the suction strength; And
And when the suction intensity is increased by the operation unit, rotating the brush at a second speed faster than the first speed. The method of claim 12,
Applying an operating power of a first voltage to a nozzle motor providing a rotational force to the brush in response to the suction strength; And
And rotating the brush at the first speed by the operating power of the first voltage. The method of claim 12,
Applying an operating power of a second voltage to a nozzle motor providing a rotational force to the brush when the suction strength increases; And
And controlling the brush to rotate at the second speed by the operating power of the second voltage. The method of claim 12,
And when the suction strength is set, any one of a first driver and a second driver of the nozzle driver for operating the brush. The method of claim 15,
Inputting a feedback signal to a power supply unit by any one of the first driver and the second driver of the nozzle driver; And
And supplying an operating power source of a first voltage or a second voltage to the nozzle motor in response to the feedback signal.

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