Patent Description:
At present, after the existing floor scrubber cleans a floor, a water path portion will remain dirt. Moreover, the dirt will stink after a period, bringing bad experience to a user. In order to prevent a pipeline from being smelly, the floor scrubber has added a self-cleaning function, which is capable of automatically rinsing the pipeline and a rolling brush. In the related technical solutions, the floor scrubber has a self-cleaning button on a handle. After the user presses the button to start a self-cleaning mode, the system flushes the pipeline and the rolling brush for self-cleaning. However, when the floor scrubber is placed against a corner of wall, the manual operation becomes very inconvenient. Moreover, after the user fills a clean water tank with water, his(her) hand is wet. At this time, when the user presses the self-cleaning button with his(her) hands, the water may flow into an interior of the floor scrubber along with the press of the self-cleaning button. In this way, other functions of the floor scrubber are influenced to affect use of the floor scrubber. In view of the above, there are no effective solutions so far how to make the self-cleaning operation of the floor scrubber more convenient and faster. A control device according to the preamble of claim <NUM> is already known e.g. from <CIT>.

In order to solve the existing technical problems, embodiments of the present disclosure provide a control device for self-cleaning of a floor scrubber and a floor scrubber.

To this end, technical solutions of the embodiments of the present disclosure is realized as follows.

The embodiments of the present disclosure provide a control device for self-cleaning of a floor scrubber. The control device comprises an excitation portion and a sensing portion. The excitation portion is disposed in a base portion of the floor scrubber, and transmits a sensing signal when being operated. The sensing portion is disposed in a main machine portion of the floor scrubber, and receives the sensing signal and trigger the main machine portion to perform a self-cleaning action when the sensing signal satisfies a predetermined condition.

In an optional embodiment of the present disclosure, the excitation portion comprises an exciter and a pedaling member. The exciter is disposed at a first side of the pedaling member, and a second side of the pedaling member extends beyond the base portion. When the pedaling member is operated at the second side of the pedaling member, the first side of the pedaling member can be controlled to move in a first direction, enabling the exciter to move towards the sensing portion.

In an optional embodiment of the present disclosure, the sensing portion triggers the main machine portion to perform the self-cleaning action when a strength of the received sensing signal reaches a predetermined threshold.

In an optional embodiment of the present disclosure, the exciter is disposed at a first surface of the pedaling member, and a second surface of the pedaling member is connected to a stretchable member fixed to the base portion. The pedaling member controls the first side of the pedaling member to move in a second direction through stretching of the stretchable member, enabling the exciter to move away from the sensing portion.

In an optional embodiment of the present disclosure, the excitation portion transmits the sensing signal when an object is detected within a predetermined distance range.

The embodiments of the present disclosure provide a floor scrubber. The floor scrubber comprises a main machine portion, a base portion carrying the main machine portion, and any one of the above control devices of the floor scrubber.

In an optional embodiment of the present disclosure, the main machine portion comprises a clean water tank for storing clean water, a clean water pipeline, a water pump, and a rolling brush. The water pump is disposed at the clean water pipeline. The clean water pipeline has an end connected to the clean water tank, and a water outflowing direction at another end of the water pipeline faces towards the rolling brush. The water pump is started, when the main machine portion performs the self-cleaning action, to guide the clean water in the clean water tank to the rolling brush through the clean water pipeline, enabling the rolling brush to be cleaned by the clean water.

In an optional embodiment of the present disclosure, the main machine portion further comprises a water suction fan, a sewage pipeline, and a sewage tank for storing sewage. A water inflowing direction at an end of the sewage pipeline faces towards the rolling brush, and another end of the sewage pipeline is connected to the sewage tank. The water suction fan is started, when the main machine portion performs the self-cleaning action, to perform suction to collect the sewage generated by cleaning the rolling brush to the sewage tank through the sewage pipeline.

With the control device for the self-cleaning of the floor scrubber and the floor scrubber according to the embodiments of the present disclosure, the control device comprises the excitation portion and the sensing portion. The excitation portion is disposed in the base portion of the floor scrubber, and the sensing portion is disposed in the main machine portion of the floor scrubber. The excitation portion transmits the sensing signal when being operated. The sensing portion receives the sensing signal and trigger the main machine portion to perform the self-cleaning action when the sensing signal satisfies the predetermined condition. The technical solutions of the embodiments of the present disclosure enable the excitation portion to transmit the sensing signal when being operated, and enable the sensing portion to receive the sensing signal and trigger the floor scrubber to perform the self-cleaning action when the sensing signal satisfies the predetermined condition. Therefore, the operation is more convenient and faster, and the user experience is better.

In order to clearly explain technical solutions of the embodiments of the present disclosure or in the related art, accompanying drawings used in the description of the embodiments or the related art are briefly described below. Obviously, the accompanying drawings as described below are merely some embodiments of the present disclosure. Based on structures illustrated in these drawings, other accompanying drawings may be obtained by those skilled in the art without creative effort.

<FIG> is a schematic diagram of a control device for self-cleaning of a floor scrubber according to an embodiment of the present disclosure.

In order to make the objects, technical solutions, and advantages of the present disclosure more apparent and clearer, specific technical solutions of the present disclosure will be described in further detail below in combination with accompanying drawings of the embodiments of the present disclosure. The embodiments described below are for illustrative purposes only, and are not intended to limit the scope of the present disclosure thereto.

The present disclosure will be further described in detail below in combination with the following specific implementations and the accompanying drawings.

The embodiments of the present disclosure provide a control device for self-cleaning of a floor scrubber. <FIG> is a schematic diagram of a control device for self-cleaning of a floor scrubber according to an embodiment of the present disclosure. As illustrated in <FIG>, the control device for the self-cleaning of the floor scrubber comprises an excitation portion and a sensing portion <NUM>. The excitation portion is disposed in a base portion <NUM> of the floor scrubber, and is configured to transmit a sensing signal when being operated. The sensing portion <NUM> is disposed in a main machine portion <NUM> of the floor scrubber. The sensing portion <NUM> is configured to receive the sensing signal and trigger the main machine portion <NUM> to perform a self-cleaning action when the sensing signal satisfies a predetermined condition.

The floor scrubber is any type of floor scrubber that may be used in daily life, such as a hand-propelled floor scrubber and an electric floor scrubber. The embodiment of the present disclosure is not limited to the type of the floor scrubber.

The excitation portion may be disposed in the base portion <NUM> of the floor scrubber, and the sensing portion <NUM> may be disposed in the main machine portion <NUM> of the floor scrubber. The base portion <NUM> of the floor scrubber is configured to carry the main machine portion <NUM> of the floor scrubber to maintain upright support of the main machine portion <NUM>. The main machine portion <NUM> may comprise main components of the floor scrubber.

In some optional embodiments, the excitation portion continuously transmits the sensing signal. Moreover, when a user's foot acts on the excitation portion, a position and/or signal strength of the excitation portion changes, which enables the sensing portion <NUM> to receive the sensing signal with varying signal strengths. When a strength of the sensing signal reaches a predetermined threshold, it is indicated that the sensing portion <NUM> receives a sensing signal satisfying the predetermined condition, and the main machine portion <NUM> is further triggered to start performing the self-cleaning action based on the sensing signal. In other optional embodiments, when the user's foot performs an action on the excitation portion, the excitation portion transmits the sensing signal, enabling the sensing portion <NUM> to receive the sensing signal. Accordingly, when the sensing portion <NUM> receives the sensing signal, it is indicated that the sensing portion <NUM> receives the sensing signal satisfying the predetermined condition, and further triggers the main machine portion <NUM> to start performing the self-cleaning action based on the sensing signal.

The change in the position of the excitation portion corresponds to change in the strength of the signal received by the sensing portion <NUM>. In an embodiment, when the user's foot does not act on the excitation portion, the excitation portion is furthest away from the sensing portion <NUM>. Accordingly, the strength of the signal received by the sensing portion <NUM> is minimum. When the user's foot acts on the excitation portion, a distance between the excitation portion and the sensing portion <NUM> gradually decreases until it is minimum. When the distance between the excitation portion and the sensing portion <NUM> is minimum, the strength of the signal received by the sensing portion <NUM> is maximum.

In this embodiment, in some optional examples, the sensing signal may be a sensing signal generated by a specific physical characteristic of a substance. In an example, the excitation portion comprises a magnetic material, such as a magnet. The magnet has a magnetic field. Since magnetic field intensities corresponding to different distances between the magnets are different, the sensing signal may be induced by the magnetic field of the magnet. Accordingly, the sensing portion receives a magnetic field intensity (or magnetic induction intensity) induced by the magnetic field of the magnet. In other optional embodiments, the sensing signal may be an electrical signal transmitted by an electronic component, and/or an optical signal transmitted by an optical component, etc..

In some optional embodiments, the excitation portion comprises an exciter <NUM> and a pedaling member <NUM>. The exciter <NUM> is disposed at a first side of the pedaling member <NUM>, and a second side of the pedaling member <NUM> extends beyond the base portion <NUM>. The pedaling member <NUM> is configured to be operated at the second side of the pedaling member <NUM> to control the first side of the pedaling member <NUM> to move in a first direction, enabling the exciter <NUM> to move towards the sensing portion <NUM>.

In some embodiments, the sensing portion <NUM> is configured to trigger the main machine portion to perform the self-cleaning action when a strength of the received sensing signal reaches a predetermined threshold.

The predetermined threshold may be configured as values suitable for the current condition by the user in advance based on different usage conditions, e.g., different excitation devices, or may be configured with a corresponding numerical value before the floor scrubber device leaves the factory. When the usage condition changes, the predetermined threshold may be reset.

In this embodiment, the pedaling member <NUM> is a pedal or a foot lever. An end (i.e., the second side) of the pedaling member <NUM> is located outside the base portion <NUM>, and another end (i.e., the first side) of the pedaling member <NUM> is located inside the base portion <NUM>. Based on lever principle, when the user applies a force to the pedaling member <NUM> at the second side of the pedaling member <NUM>, i.e., by stepping on the pedal with the foot, the exciter <NUM> located at the first side of the pedaling member <NUM> moves in the first direction along with movement of the second side of the pedaling member <NUM> in a second direction. For example, with reference to <FIG>, the first direction refers to a downward direction, and the second direction refers to an upward direction. As an example, the exciter <NUM> is made of a magnetic material. An intensity of a magnetic field detected by the sensing portion <NUM> increases with reduction in a distance between the exciter <NUM> and the sensing portion <NUM> of the main machine portion <NUM>. When the intensity of the magnetic field received by the sensing portion <NUM> in the main machine portion <NUM> is greater than a predetermined value, the main machine portion <NUM> is triggered to start performing the self-cleaning action. In this way, it is possible to keep clean and sanitary of a rolling brush and a pipeline of the floor scrubber. Moreover, the rolling brush is prevented from smudging, breeding bacteria, generating odor, or the like. Therefore, the user does not have to worry about inconvenient operation, for example, a user's inability to start a self-cleaning mode due to limitation of a placement position when the floor scrubber is placed at a corner of wall, user's inconvenience for pressing a self-cleaning button when user's hands have water, or the like. In this case, the user's hands are liberated, and convenience of user's operation is improved.

In some optional embodiments, the pedaling member <NUM> has a first surface and a second surface at the first side of the pedaling member. The exciter <NUM> is disposed at the first surface of the pedaling member <NUM>, and the second surface of the pedaling member <NUM> is connected to a stretchable member <NUM> fixed to the base portion <NUM>. The pedaling member <NUM> is configured to control the first side of the pedaling member <NUM> to move in the second direction through stretching of the stretchable member <NUM>, enabling the exciter <NUM> to move away from the sensing portion <NUM>.

In this embodiment, the exciter <NUM> may be an electrical sensor, a magnetic sensor, an optical sensor, or other sensors, which is not limited herein. The pedaling member <NUM> may be a pedal or a foot level. In order to complete a pedaling action, a support member <NUM> is required to provide a support function. The support member <NUM> is fixed in the base portion <NUM>, and is equivalent to a fulcrum of a lever. The support member <NUM> supports the pedaling member <NUM> in a position close to the second side of the pedaling member <NUM> or in a middle position of the pedaling member <NUM>. In this way, a displacement of the first side of the pedaling member <NUM> moving in the first direction is smaller than or equal to a displacement of the second side of the pedaling member <NUM> moving in the second direction. Therefore, a small movement range of the user's foot can make the exciter <NUM> move in a greater range. The exciter <NUM> is located right above the first side of the pedaling member <NUM>, i.e., the first surface of the pedaling member <NUM>. The stretchable member <NUM> is further disposed below the first side of the pedaling member <NUM>, i.e., the second surface of the pedaling member <NUM>. As an example, the stretchable member <NUM> may be a retractable component, such as a spring. In this way, when the user's foot removes an action from the second side of the pedaling member, the exciter <NUM> can move away from the sensing portion <NUM> through stretching control of the stretchable member <NUM>, enabling the exciter <NUM> to move to an initial position.

In an optional embodiment of the present disclosure, the excitation portion is configured to transmit the sensing signal when an object is detected within a predetermined distance range.

In this embodiment, the excitation portion may be disposed at an edge of the base portion <NUM>, and a sensing member of the excitation portion is located outside the base portion <NUM> and has a sensing direction towards the outside of the base portion <NUM>. In an example, the excitation portion comprises a photoelectric sensor, and a sensing member of the photoelectric sensor is located outside the base portion <NUM>. When the user approaches the photoelectric sensor to a predetermined distance, the photoelectric sensor detects an object within the predetermined distance range and transmits the sensing signal. The sensing portion <NUM> triggers the main machine portion <NUM> to perform the self-cleaning action after receiving the sensing signal.

In this embodiment, the sensing portion <NUM> has an execution function and a function of receiving a signal or detecting a signal. In an example, the function of receiving a signal or detecting a signal may be implemented by a sensor or a sensing chip, and the execution function may be implemented by a controller or a control chip. Under normal conditions, the main machine portion <NUM> has a main control board for controlling the floor scrubber therein. Moreover, the controller or the control chip may be a controller or a control chip separately provided by the sensing portion <NUM>, or may be implemented by the main control board of the floor scrubber.

In this embodiment, after the exciter <NUM> moves in the first direction, the exciter <NUM> and the sensing portion <NUM> may be in a contact or non-contact relationship.

The technical solutions of the embodiments of the present disclosure enables the sensing portion to receive the sensing signal through an action of the foot on the excitation portion, in which the sensing signal satisfies the predetermined condition and is transmitted by the excitation portion. In this way, the floor scrubber starts to perform the self-cleaning action. Therefore, the operation is more convenient and faster, and the user experience is better.

Based on the above embodiments, the embodiments of the present disclosure further provide a floor scrubber. The floor scrubber comprises a main machine portion, a base portion configured to carry the main machine portion, and any one of the above control devices of the floor scrubber.

In an embodiment, the main machine portion comprises a clean water tank for storing clean water, a clean water pipeline, a water pump, and a rolling brush. The water pump is disposed at the clean water pipeline. The clean water pipeline has an end connected to the clean water tank, and a water outflowing direction at another end of the water pipeline faces towards the rolling brush. When the main machine portion performs the self-cleaning action, the water pump is started and guides the clean water in the clean water tank to the rolling brush through the clean water pipeline, enabling the rolling brush to be washed by clean water.

In some optional embodiments, the main machine portion further comprises a amend, a sewage pipeline, and a sewage tank for storing sewage. A water inflowing direction at an end of the sewage pipeline faces towards the rolling brush, and another end of the sewage pipeline is connected to the sewage tank. When the main machine portion performs the self-cleaning action, the water suction fan is started to perform suction to collect the sewage generated by cleaning the rolling brush to the sewage tank through the sewage pipeline.

During the self-cleaning of the floor scrubber, the water pump of the floor scrubber uniformly sprays the clean water in the clean water tank on the rolling brush through the clean water pipeline. Meanwhile, the rolling brush rotates at a predetermined rotational speed, and the rotational speed and a duration of the rotation are sufficient to throw much, especially most, of the sewage from the rolling brush by a centrifugal force. Further, the water suction fan operates synchronously to form a negative pressure at the sewage pipeline. In this way, most of the sewage caused by flushing the rolling brush, especially the sewage thrown out by the centrifugal effect, is suctioned into the sewage tank to complete cleaning of the rolling brush.

It should be noted that, the floor scrubber may further include other components, such as a main control board, a button display board, and a rolling brush electrode.

Claim 1:
A control device for self-cleaning of a floor scrubber, the control device comprising:
an excitation portion disposed in a base portion (<NUM>) of the floor scrubber, the excitation portion transmitting a sensing signal when being operated; characterized in that the control device comprises
a sensing portion (<NUM>) disposed in a main machine portion (<NUM>) of the floor scrubber, the sensing portion (<NUM>) receiving the sensing signal and trigger the main machine portion (<NUM>) to perform a self-cleaning action when the sensing signal satisfies a predetermined condition.