Floor brush and cleaning apparatus

Abstract

The utility model provides a kind of floor brush and cleaning equipment, floor brush includes rolling brush and is suitable for being arranged in the scraping strip component of rolling brush side, scraping strip component includes scraping strip body, scraping strip body can be close to or away from rolling brush along first direction, to form the gap of different size between with rolling brush, first direction and the reference plane suitable for rolling brush work have constant angle of inclusion.The scraping strip body of the utility model can be close to rolling brush or away from rolling brush, change the distance between the front end of scraping strip body and rolling brush, adjust the cross-sectional area of the gap between the front end of scraping strip body and rolling brush, so that the gap between scraping strip body and rolling brush can adapt to various working scenarios, avoid the problem that cleaning equipment appears dirt blockage and insufficient suction, improve the cleaning efficiency of cleaning equipment.

Description

Technical Field

[0001] This utility model belongs to the field of cleaning equipment technology, specifically relating to a floor brush and cleaning equipment. Background Technology

[0002] In household cleaning equipment such as vacuum cleaners and floor scrubbers, floor brushes have a roller brush and a scraper located behind the roller brush. The position of the scraper is fixed.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0004] To achieve high negative pressure and airflow velocity around the suction inlet, existing floor brushes have a relatively small gap between the front end of the scraper blade and the rear side of the roller brush. When encountering larger solid debris (such as soybeans, pet food, crumbs, etc.), this debris cannot pass through the narrow gap between the scraper blade and the roller brush, easily becoming clogged. This not only instantly blocks airflow, causing the cleaning equipment to stop working, but also requires the user to manually remove the solid debris to restore operation, severely impacting the smoothness of the user experience and the reliability of the cleaning equipment.

[0005] To alleviate the aforementioned clogging problem, some designs increase the gap between the scraper and the roller brush. However, this results in a larger cross-sectional area of ​​the airflow channel. With the fan power remaining constant, the airflow velocity through this area will decrease accordingly, weakening the suction force and affecting the ability to remove attached dirt and the wastewater recovery rate, leading to water stains.

[0006] Therefore, no matter what value is set for the distance between the scraper and the roller brush, it cannot meet the performance requirements of cleaning equipment in various working scenarios.

[0007] The purpose of this utility model is to provide a floor brush that solves the problem that the distance between the roller brush and the scraper cannot meet the performance requirements of cleaning equipment in various working scenarios.

[0008] To achieve the above objectives, a specific embodiment of the present invention provides a floor brush, which includes a roller brush and a scraper assembly suitable for being disposed beside the roller brush. The scraper assembly includes a scraper body, which can move closer to or further away from the roller brush along a first direction to form gaps of different sizes with the roller brush. The first direction has a constant angle with a reference plane suitable for the operation of the roller brush.

[0009] In one or more embodiments of this utility model, the angle between the first direction and the reference plane suitable for the operation of the roller brush is 0°.

[0010] In one or more embodiments of this utility model, the scraper assembly further includes a power mechanism, which includes a power source and a transmission system connecting the scraper body and the power source. The transmission system is used to convert the motion state of the power source output end into a linear reciprocating motion state of the scraper body along a set direction.

[0011] In one or more embodiments of this utility model, the power source is set as an electric motor, and the transmission system includes a lead screw, a moving part threaded with the lead screw, and an anti-rotation structure that restricts the rotation of the moving part. The moving part is connected to the scraper body for driving the scraper body to reciprocate linearly along a first direction.

[0012] In one or more embodiments of this utility model, the transmission system is used to convert the motion of the moving member along the second direction into the motion of the scraper body along the first direction, and there is an angle between the first direction and the second direction.

[0013] In one or more embodiments of the present invention, the transmission system includes a transmission groove and a transmission pin. The recessed direction of the transmission groove is perpendicular to a first direction and a second direction. The extension direction of the transmission groove has an angle with the first direction and the second direction. The transmission pin is slidably connected in the transmission groove. One of the transmission groove and the transmission pin is formed in the scraper body, and the other is formed in the moving part.

[0014] In one or more embodiments of this utility model, the moving member includes a first moving part that is threadedly engaged with a lead screw and a second moving part that is connected to the scraper body. The anti-rotation structure includes a first anti-rotation plane formed on the peripheral wall of the first moving part and a second anti-rotation plane formed on the second moving part and abutting against the first anti-rotation plane. The second moving part has a first stop surface and a second stop surface that are disposed opposite to each other along a second direction. The first moving part is restricted between the first stop surface and the second stop surface.

[0015] In one or more embodiments of this utility model, the second moving part is provided with a receiving groove, and the corresponding groove wall of the receiving groove forms a first stop surface, a second stop surface and a second anti-rotation plane, respectively, and the first moving part is at least partially located in the receiving groove.

[0016] In one or more embodiments of the present invention, the second moving part is formed with a through hole through which the lead screw passes and through the receiving groove.

[0017] In one or more embodiments of this utility model, the scraper body has a guide groove recessed in the vertical direction, and the scraper assembly also includes a guide member that is fixed in position and slidably connected in the guide groove. The length of the guide groove in the first direction is greater than the length of the guide member in the first direction, and the two groove walls of the guide groove that are arranged opposite to each other in the second direction are in contact with the peripheral wall of the guide member.

[0018] In one or more embodiments of this utility model, the scraper assembly further includes an angle detection mechanism, which is used to detect the rotation angle of the motor output shaft in real time to determine the distance between the scraper body and the roller brush.

[0019] In one or more embodiments of this utility model, the scraper body has a first working position, a second working position, and a third working position with the distance from the roller brush increasing sequentially; the scraper assembly also includes a position detection mechanism, which can obtain the position information of the scraper body when the scraper body moves to the first working position and / or the third working position.

[0020] In one or more embodiments of this utility model, the scraper assembly further includes a dirt detection component and a controller. The dirt detection component is used to detect the particle size of solid dirt on the surface to be cleaned, and the controller is used to control the distance between the scraper body and the roller brush based on the particle size of the solid dirt on the surface to be cleaned.

[0021] In one or more embodiments of this utility model, the dirt detection component includes an infrared emitter and an infrared receiver disposed on the front side of the roller brush and arranged opposite to each other along the roller brush axis, wherein the infrared emitter is used to emit horizontal infrared light to the infrared receiver.

[0022] In one or more embodiments of the present invention, the dirt detection assembly includes a telescopic arm for carrying an infrared transmitter or an infrared receiver, and a second elastic member abutting against the top of the telescopic arm. The telescopic arm can extend and retract in the vertical direction to change its height, and the second elastic member is used to provide a downward resetting force to the telescopic arm.

[0023] In one or more embodiments of this utility model, the dirt detection component includes a low-level dirt detection component and a high-level dirt detection component arranged in layers.

[0024] In one or more embodiments of this utility model, the scraper body includes a scraping part located near one end of the roller brush; the target particle size detection threshold T1 of the low-level dirt detection component is set to 3 mm; and the target particle size detection threshold T2 of the high-level dirt detection component is set to 5 mm.

[0025] In one or more embodiments of the present invention, the floor brush includes a first elastic member abutting against the scraper body on the side near or away from the roller brush. When the scraper body moves away from the roller brush, the first elastic member is configured to provide a force to the scraper body that causes the scraper body to return to its original position.

[0026] On the other hand, a specific embodiment of this utility model provides a cleaning device, which includes the aforementioned floor brush.

[0027] Compared with the prior art, the scraper body of this utility model can be close to or far from the roller brush, changing the distance between the front end of the scraper body and the roller brush, and adjusting the cross-sectional area of ​​the gap between the front end of the scraper body and the roller brush. This allows the gap between the scraper body and the roller brush to adapt to various working scenarios, avoiding problems such as dirt blockage and insufficient suction in the cleaning equipment, and improving the cleaning efficiency of the cleaning equipment. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a three-dimensional structural diagram of the floor brush in one embodiment of the present invention;

[0030] Figure 2 This is a side view of the floor brush in one embodiment of the present invention;

[0031] Figure 3 This is a three-dimensional structural view of the scraper assembly and the roller brush in one embodiment of the present invention;

[0032] Figure 4 This is an exploded view of the scraper assembly in one embodiment of the present invention;

[0033] Figure 5 This is a partial structural diagram of the scraper assembly in one embodiment of the present invention;

[0034] Figure 6 This is an exploded structural diagram of the scraper body and guide member in one embodiment of the present invention;

[0035] Figure 7 This is an exploded view of the detection mechanism in one embodiment of the present invention;

[0036] Figure 8 This is a diagram showing the working state of the detection mechanism in one embodiment of the present invention;

[0037] Figure 9 This is a flowchart illustrating the control method in one embodiment of the present invention.

[0038] Explanation of main reference numerals in the attached drawings: 1. Scraper assembly; 11. Scraper body; 111. Drive pin; 112. Guide groove; 113. Scraping part; 12. Power mechanism; 121. Power source; 122. Lead screw; 123. Moving part; 1231. First moving part; 1232. Second moving part; 1233. Drive groove; 1234. Receiving groove; 1235. Through hole; 13. Guide part; 14. Angle detection mechanism; 2. Detection mechanism; 21. Infrared transmitter; 22. Infrared receiver; 23. Telescopic arm; 24. Second elastic element; 3. Roller brush. Detailed Implementation

[0039] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0040] In the description of this utility model, it should be understood that the terms "top", "bottom", "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] Furthermore, the "first direction" can be referenced. Figures 3 to 5 The X-axis direction in the diagram; the "second direction" can be referenced. Figures 3 to 5 The Y-axis direction in the figure, the "third direction" can be referred to Figures 3 to 5 The Z-axis direction in the equation.

[0042] Furthermore, the term "first" is used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] In one embodiment, reference is made to Figures 1 to 4As shown, this application provides a floor brush, which includes a scraper assembly 1 and a roller brush 3. The scraper assembly 1 is adapted to be installed radially beside the roller brush 3, particularly suitable for being located in the bottom area behind the roller brush 3, for contacting or approaching the surface to be cleaned. The scraper assembly 1 includes a scraper body 11 and a power mechanism 12, which is connected to the scraper body 11. The scraper body 11 can move closer to or further away from the roller brush 3 along a first direction to form gaps of different sizes between it and the roller brush, so that the gap between the two can adapt to various cleaning scenarios. The first direction has a constant angle with a reference plane suitable for the operation of the roller brush 3, which is generally parallel to the surface to be cleaned.

[0044] Specifically, in practical applications, when there are large solid particles in front of the roller brush 3, the scraper body 11 can be driven away from the roller brush 3, increasing the distance between them. This allows the large solid particles to pass smoothly through the gap between the scraper body 11 and the roller brush 3, preventing solid particles from clogging between them. When there are small solid particles or no solid particles in front of the roller brush 3, the scraper body 11 can be driven closer to the roller brush 3, decreasing the distance between them. This results in greater suction around the suction inlet, improving cleaning efficiency.

[0045] In one embodiment, reference is made to Figure 4 and Figure 5 As shown, the power mechanism 12 adopts an active driving mode for the scraper body 11 to move. The angle between the first direction and the reference plane suitable for the operation of the roller brush 3 is 0°, that is, the first direction is parallel to the reference plane, or it can also be understood as the first direction being on the reference plane. The power mechanism 12 includes a power source 121 and a transmission system. The output end of the power source 121 is connected to the input end of the transmission system, and the output end of the transmission system is connected to the scraper body 11. The transmission system can transmit the power output from the power source 121 to the scraper body 11, thereby converting the motion state of the output end of the power source 121 into the linear reciprocating motion state of the scraper body 11, driving the scraper body 11 to move closer to or away from the roller brush 3 along the first direction.

[0046] Furthermore, the power source 121 is a motor, which outputs a certain torque. The transmission system converts the torque output by the motor into a force along a first direction and applies this force to the scraper body 11, driving the scraper body 11 to reciprocate along the first direction. The transmission system includes a lead screw 122, a moving part 123, and an anti-rotation structure. The lead screw 122 is directly connected to the output of the motor or connected to the output of the motor through components such as a reducer. The moving part 123 is threadedly connected to the lead screw 122 and has a transmission connection with the scraper body 11. The anti-rotation structure is connected to the moving part 123 to restrict the moving part 123 from rotating around the central axis of the lead screw 122. When the motor drives the lead screw 122 to rotate, the moving part 123 cannot rotate synchronously with the lead screw 122 due to the restriction of the anti-rotation structure. Therefore, the moving part 123 can move along the central axis of the lead screw 122, and its direction of movement depends on the rotation direction of the lead screw 122. Furthermore, since the moving part 123 and the scraper body 11 have a transmission connection, the moving part 123 can transmit the force and motion state to the scraper body 11, thereby driving the scraper body 11 to reciprocate linearly along the first direction.

[0047] It should be noted that using the lead screw 122 to transmit force in the above embodiments is only one of the options available for practical applications. In other embodiments, the transmission system can also transmit the motor torque through mechanisms such as gears, cams, and crank-connecting rods, and convert the torque into a force that drives the scraper body 11 to move in the first direction.

[0048] As a first example, the transmission system can use meshing gears and racks. The gears are connected to the output end of the motor, and the racks are fixedly connected to the scraper body 11. When the gears rotate, they can drive the racks and scraper body 11 to move synchronously.

[0049] As a second example, the transmission system can use a cam and a spring. The cam is connected to the output end of the motor. The tip of the cam and the spring abut against the two opposite sides of the scraper body 11. The cam provides a force to the scraper body 11 to move toward the spring, and the spring provides a force to the scraper body 11 to move toward the cam. This scheme can also drive the scraper body 11 to perform reciprocating linear motion.

[0050] As a third example, the transmission system can adopt a cam and frame structure. The cam is connected to the output end of the motor, and the frame structure is connected to the scraper body 11 or the two are integrally formed. The cam is located inside the frame structure, and two opposing abutment surfaces are formed inside the frame structure. When the tip of the cam contacts one of the abutment surfaces, it can drive the scraper body 11 to move forward. When the tip of the cam contacts the other abutment surface, it can drive the scraper body 11 to move in the opposite direction. This scheme can also drive the scraper body 11 to perform reciprocating linear motion.

[0051] As a fourth example, the transmission system can adopt a crank-connecting rod mechanism. The core function of the crank-connecting rod mechanism is to convert the rotational motion of the crankshaft into the linear reciprocating motion of the piston. The crankshaft of the crank-connecting rod mechanism is connected to the output end of the motor, and the piston of the crank-connecting rod mechanism is connected to the scraper body 11, which can also drive the scraper body 11 to perform reciprocating linear motion.

[0052] The above are several examples of transmission systems that convert the rotational motion of the motor output shaft into the reciprocating linear motion of the scraper body 11. Any adaptive adjustments made to the specific structure of the transmission system by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0053] Furthermore, it should be noted that in the above embodiments, the power source 121 being configured as a motor to drive the scraper body 11 to move is only one of the options available for practical applications. In other embodiments, the power source 121 can also be configured as a linear drive device such as a cylinder, hydraulic cylinder, electric cylinder, or linear motor. These linear drive devices can be directly connected to the scraper body 11 to drive the scraper body 11 to perform reciprocating linear motion.

[0054] In one embodiment, reference is made to Figure 4 As shown, the scraper body 11 and the moving member 123 move in different directions. The scraper body 11 moves along a first direction, and the moving member 123 moves along a second direction. There is an angle between the first direction and the second direction, and both are approximately parallel to the horizontal plane. At this time, the structure of the transmission system is relatively complex, which can convert the movement of the moving member 123 along the second direction into the movement of the scraper body 11 along the first direction.

[0055] Furthermore, the transmission system includes a transmission groove 1233 and a transmission pin 111. The transmission groove 1233 is formed on the moving member 123, and the recessed direction of the transmission groove 1233 is perpendicular to the first direction and the second direction. The transmission groove 1233 has a certain extension length on the plane where the scraper body 11 is located, and the extension direction of the transmission groove 1233 forms an angle with the first direction and the second direction. The transmission groove 1233 can be regarded as an inclined groove. The transmission pin 111 is formed on the scraper body 11, and the transmission pin 111 extends into the transmission groove 1233 and maintains a sliding connection with the transmission groove 1233. When the power source 121 drives the moving member 123 to move along the second direction, a relative movement occurs between the transmission groove 1233 and the transmission pin 111, thereby driving the scraper body 11 to move along the first direction to move closer to or further away from the roller brush 3, adjusting the gap size between the scraper body 11 and the roller brush 3.

[0056] Furthermore, the scraper body 11 has a guide groove 112 recessed in the vertical direction. The scraper assembly 1 also includes a guide member 13 fixed in position and slidably connected within the guide groove 112. The two groove walls of the guide groove 112, which are arranged opposite each other in the second direction, fit against the peripheral wall of the guide member 13, thereby restricting the movement of the scraper body 11 in the second direction. The length of the guide groove 112 in the first direction is greater than the length of the guide member 13 in the first direction, so that the guide groove 112 and the guide member 13 can move relative to each other in the first direction, guiding and limiting the scraper body 11, so that the scraper body 11 can only move along the first direction under the drive of the moving member 123.

[0057] Furthermore, multiple transmission grooves 1233 and transmission pins 111 are provided in a one-to-one correspondence, and the multiple transmission grooves 1233 and multiple transmission pins 111 are arranged at intervals along the second direction, so that there are multiple interaction points between the scraper body 11 and the moving part 123, ensuring that each part of the scraper body 11 is evenly stressed.

[0058] It should be noted that the positions of the transmission groove 1233 and the transmission pin 111 in the above embodiments are only one of the options available in actual applications. In other embodiments, the positions of the transmission groove 1233 and the transmission pin 111 can also be adjusted, with the transmission groove 1233 set on the scraper body 11 and the transmission pin 111 set on the moving part 123. This solution can also achieve the same or similar technical effects as the above embodiments.

[0059] In one embodiment, reference is made to Figure 5 As shown, the moving part 123 includes a first moving part 1231 and a second moving part 1232. The first moving part 1231 is generally constructed as a block structure and is threadedly connected to the lead screw 122. The second moving part 1232 is generally constructed as a plate structure or a portion thereof is constructed as a plate structure. The second moving part 1232 is connected to the scraper body 11 and is connected to the first moving part 1231 via an anti-rotation structure. The anti-rotation structure includes a first anti-rotation plane and a second anti-rotation plane. The first anti-rotation plane is formed on the peripheral wall of the first moving part 1231, and the second anti-rotation plane is formed on the second moving part 1232 and fits against the first anti-rotation plane to restrict the rotation of the first moving part 1231. The second moving part 1232 is formed with a first stop surface and a second stop surface arranged opposite to each other along the second direction. The first moving part 1231 is restricted between the first stop surface and the second stop surface, thereby restricting the first moving part 1231 from separating from the second moving part 1232 during movement, so that the second moving part 1232 and the scraper body 11 connected thereto can move synchronously with the first moving part 1231.

[0060] Furthermore, a block-shaped protrusion structure is formed on the second moving part 1232, and a receiving groove 1234 is provided on the block-shaped protrusion structure. The two groove walls of the receiving groove 1234, which are arranged opposite each other in the second direction, respectively form a first stop surface and a second stop surface. The two groove walls of the receiving groove 1234, which are arranged opposite each other in the first direction, and the bottom of the groove form three second anti-rotation planes. These three second anti-rotation planes cooperate with the three corresponding first anti-rotation planes on the first moving part 1231 to improve the anti-rotation effect.

[0061] Furthermore, the second moving part 1232 is formed with a through hole 1235, which passes through the receiving groove 1234 along the second direction. The through hole 1235 is used to avoid the lead screw 122 so that the lead screw 122 can pass through, thereby reducing the difficulty of combining the first moving part 1231 and the second moving part 1232.

[0062] In one embodiment, the floor brush does not employ active drive components such as motors or cylinders. Without relying on the power source 121 (i.e., the power source 121 requiring electrical drive), the floor brush is configured to provide a force to the scraper body 11 that approaches the roller brush 3. When the scraper body 11 is impacted by solid dirt on the surface to be cleaned, the scraper body 11 can overcome the force exerted on it by the power mechanism 12 and move away from the roller brush 3, thereby passively adjusting the distance between the scraper body 11 and the roller brush 3.

[0063] Furthermore, the floor brush includes a first elastic element connected to the scraper body 11. The first elastic element can be constructed as a component with a certain elastic capacity, such as a spring. The first elastic element can be disposed on the side of the scraper body 11 near or away from the roller brush 3.

[0064] When the first elastic element is located on the side of the scraper body 11 near the roller brush 3, it is in a normal or stretched state when not subjected to impact, at which point the distance between the scraper body 11 and the roller brush 3 is minimal. When the scraper body 11 is impacted by dirt, it experiences a force moving away from the roller brush 3. This force, once sufficient, causes the scraper body 11 to move away from the roller brush 3, overcoming the force generated by the stretching of the first elastic element and increasing the distance between the scraper body 11 and the roller brush 3. When the scraper body 11 is no longer impacted by dirt, the first elastic element returns to its original state and drives the scraper body 11 to reset.

[0065] When the first elastic element is positioned on the side of the scraper body 11 away from the roller brush 3, the scraper body 11 is not impacted by dirt or other components. The first elastic element is in its normal or compressed state, providing a force to the scraper body 11 that approaches the roller brush 3. At this time, the distance between the scraper body 11 and the roller brush 3 is minimal. When the scraper body 11 is impacted by dirt, it experiences a force that moves it away from the roller brush 3. Once this force reaches a certain level, it allows the scraper body 11 to overcome the force applied by the first elastic element, thus moving it away from the roller brush 3 and increasing the distance between them. When the scraper body 11 is no longer impacted by dirt, the first elastic element returns to its original state and drives the scraper body 11 to reset.

[0066] Of course, when the scraper body 11 is driven by a passive drive, a guide structure and a limiting mechanism can also be set to precisely control the direction of movement of the scraper body 11.

[0067] In one embodiment, reference is made to Figure 5 As shown, the scraper assembly 1 also includes an angle detection mechanism 14. The angle detection mechanism 14 is used to detect the rotation angle of the motor output shaft in real time, so that the user can grasp the rotation angle of the motor output shaft in real time. The user can obtain the position of the scraper body 11 by the motor rotation angle and determine whether the scraper body 11 has moved to the specified position.

[0068] Furthermore, the angle detection mechanism 14 can be a Hall plate.

[0069] Furthermore, on the moving trajectory of the scraper body 11, the scraper body 11 has a first working position, a second working position, and a third working position. The distance between these three working positions and the roller brush 3 increases sequentially, and they correspond one-to-one with the corresponding working modes of the cleaning equipment.

[0070] As a first example, when the scraper body 11 is in the first working position, the cleaning device is in the small particle dirt cleaning mode, and the distance between the scraper body 11 and the roller brush 3 is basically at its minimum value, which can be set to 2mm. At this time, the suction around the suction port of the cleaning device behind the scraper body 11 is basically at its maximum, and small particle solid dirt and sewage with a particle size of less than 2mm on the surface to be cleaned can be quickly sucked away.

[0071] As a second example, when the scraper body 11 is in the second working position, the cleaning device is in the medium-particle dirt cleaning mode. This cleaning mode can generally be used as the default working mode (or regular working mode) after the cleaning device is started. At this time, the distance between the scraper body 11 and the roller brush 3 is set to an intermediate value, which can be set to 4mm. At this time, the suction around the suction port of the cleaning device is moderate, and the sewage and medium-particle solid dirt with a particle size of less than 4mm on the surface to be cleaned can be quickly removed.

[0072] As a third example, when the scraper body 11 is in the third working position, the cleaning device is in the large particle dirt cleaning mode, and the distance between the scraper body 11 and the roller brush 3 is basically at its maximum value, which can be set to 8mm. At this time, although the suction around the suction port of the cleaning device is relatively small, it can still ensure that the cleaning device works normally, and the sewage and large solid particles with a particle size of less than 8mm on the surface to be cleaned can still be quickly sucked away.

[0073] It should be noted that the specific values ​​of the distance between the scraper body 11 and the roller brush 3 in the above examples (2mm, 4mm and 8mm) are only one of the options available in actual applications. Those skilled in the art can adapt the above values ​​according to actual needs. Therefore, the above values ​​should not be regarded as a limitation on the technical solution of this application.

[0074] In one embodiment, the scraper assembly 1 further includes a position detection mechanism. The position detection mechanism can obtain the position information of the scraper body 11 when it moves to the first working position and the third working position. The user can use the position detection mechanism to determine whether the scraper body 11 has reached the first working position and the third working position, thereby accurately determining whether there are any abnormalities such as blockage or stall around the scraper body 11.

[0075] Furthermore, the position detection mechanism may use two limit switches. One limit switch is set at the position of the scraper body 11 or the position of the second moving part 1232 when the scraper body 11 moves to the first working position. The other limit switch is set at the position of the scraper body 11 or the position of the second moving part 1232 when the scraper body 11 moves to the third working position.

[0076] Furthermore, the position detection mechanism can work in conjunction with the angle detection mechanism 14 to improve the accuracy of detecting the position of the scraper body 11. When the detection results of both the angle detection mechanism 14 and the position detection mechanism indicate that the scraper body 11 has moved into place, it means that the cleaning equipment is operating normally. However, when the detection results of one or both of the angle detection mechanism 14 and the position detection mechanism indicate that the scraper body 11 has not moved into place, it means that the cleaning equipment is not operating normally, and there may be problems such as blockage or stalling. In this case, the user can clean around the scraper body 11 to restore the cleaning equipment to normal operation.

[0077] In one embodiment, reference is made to Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 8As shown, the scraper assembly also includes a dirt detection component 2 and a controller. The dirt detection component 2 is used to detect the particle size of solid dirt on the surface to be cleaned, and the controller is used to control the distance between the scraper body 11 and the roller brush 3 based on the particle size of solid dirt on the surface to be cleaned. The scraper assembly 1, the dirt detection component 2 and the controller work together to automatically adjust the position of the scraper body 11 based on the particle size of solid dirt on the surface to be cleaned, thereby achieving adaptive adjustment of the scraper body 11.

[0078] Furthermore, the dirt detection component 2 is installed on the front side of the roller brush 3. The dirt detection component 2 includes an infrared emitter 21 and an infrared receiver 22 arranged opposite each other along the axial direction of the roller brush 3. There is a certain height difference between the infrared emitter 21 and the infrared receiver 22 and the surface to be cleaned. The dirt detection component 2 determines the particle size of solid dirt on the surface to be cleaned by the electrical signal output by the infrared receiver 22. When there is no solid dirt on the surface to be cleaned, or the particle size of the solid dirt is too small to block the infrared rays emitted by the infrared emitter 21, the infrared receiver 22 can normally receive the detection signal (i.e., infrared rays) and outputs a corresponding electrical signal, indicating that there is no solid dirt on the surface to be cleaned, or the particle size of the solid dirt is too small. After receiving the electrical signal output by the infrared receiver 22, the controller sends a corresponding control command to the power mechanism 12, causing the power mechanism 12 to move the scraper body 11 to a position relatively close to the roller brush 3. Conversely, if the infrared receiver 22 cannot normally receive the detection signal, the power mechanism 12 moves the scraper body 11 to a position relatively far from the roller brush 3.

[0079] Furthermore, the contaminant detection component 2 includes a low-level contaminant detection component and a high-level contaminant detection component arranged in layers. The low-level contaminant detection component has a pair of independently operating infrared emitters 21 and infrared receivers 22, and the high-level contaminant detection component has another pair of independently operating infrared emitters 21 and infrared receivers 22. The low-level and high-level contaminant detection components have independent operating states. The low-level and high-level contaminant detection components are arranged in layers in the height direction, with the high-level contaminant detection component located above the low-level contaminant detection component. The two components have different ground clearances, which allows for more accurate detection of the particle size of solid contaminants.

[0080] As an example, the ground clearance of the low-level dirt detection component can be set to 3mm, meaning the distance between the infrared rays emitted by the low-level dirt detection component and the bottom of the scraping part 113 in a third-order direction is 3mm. In this case, the target particle size detection threshold T1 of the low-level dirt detection component is 3mm, and the low-level dirt detection component is used to determine whether the target particle size has reached 3mm. The ground clearance of the high-level dirt detection component can be set to 5mm, meaning the distance between the infrared rays emitted by the high-level dirt detection component and the bottom of the scraping part 113 in a third-order direction is 5mm. In this case, the target particle size detection threshold T2 of the high-level dirt detection component is 5mm, and the high-level dirt detection component is used to determine whether the target particle size has reached 5mm. The third-order direction is perpendicular to the reference plane where the roller brush 3 works.

[0081] Reference Figure 8 As shown in (a), when the infrared rays of both the low-level dirt detection component and the high-level dirt detection component are not blocked, it indicates that there are no solid dirt or the particle size of the solid dirt is less than 3 mm on the surface to be cleaned. At this time, the controller sends a control command to the power mechanism 12 to adjust the distance between the scraper body 11 and the roller brush 3 to about 2 mm, which can basically ensure that most solid dirt (such as dust) with a particle size of less than 3 mm can pass smoothly through the gap between the scraper body 11 and the roller brush 3.

[0082] Reference Figure 8 As shown in (b), when the infrared rays of the low-level dirt detection component are blocked while the infrared rays of the high-level dirt detection component are not blocked, it indicates that there are solid dirt particles with a diameter between 3mm and 5mm on the surface to be cleaned. At this time, the controller sends a control command to the power mechanism 12 to adjust the distance between the scraper body 11 and the roller brush 3 to about 4mm. This can basically ensure that most solid dirt particles with a diameter between 3mm and 5mm (such as rice and mung beans) can pass smoothly through the gap between the scraper body 11 and the roller brush 3.

[0083] Reference Figure 8 As shown in (c), when the infrared rays of both the low-level and high-level dirt detection components are blocked, it indicates that there are solid dirt particles larger than 5 mm on the surface to be cleaned. At this time, the controller sends a control command to the power mechanism 12 to adjust the distance between the scraper body 11 and the roller brush 3 to about 8 mm. This can basically ensure that most solid dirt particles larger than 5 mm (such as soybeans and peanuts) can pass smoothly through the gap between the scraper body 11 and the roller brush 3. In addition, the particle size of solid dirt particles larger than 5 mm is mostly between 5 and 10 mm.

[0084] In one embodiment, reference is made to Figure 7As shown, the dirt detection assembly 2 includes a telescopic arm 23 for carrying an infrared transmitter 21 or an infrared receiver 22, and a second elastic member 24 abutting against the top of the telescopic arm 23. The second elastic member 24 can be constructed as a component with a certain elasticity, such as a spring. After being impacted by an obstacle in front, the telescopic arm 23 can extend and retract vertically to change its height, thus avoiding the obstacle and preventing deformation or breakage of the telescopic arm 23 after impact. The second elastic member 24 provides a downward force to the telescopic arm 23, helping it to return to its original position after passing the obstacle.

[0085] Furthermore, each telescopic arm 23 is equipped with two second elastic elements 24, and each second elastic element 24 is provided with a guide post to limit the compression and tension direction of the second elastic element 24.

[0086] Furthermore, the dirt detection component 2 also includes a stop, and the stop and the telescopic arm 23 include wings protruding along the left and right sides, with the bottom surface of the wings abutting against the bottom surface of the stop, thereby limiting the ground clearance of the telescopic arm 23.

[0087] In one embodiment, reference is made to Figure 1 and Figure 2 As shown, this application provides a floor brush, which includes a scraper assembly and a roller brush 3 as described in any of the above embodiments. The scraper assembly 1 of the scraper assembly is disposed on the rear side of the roller brush 3, and the dirt detection assembly 2 of the scraper assembly is disposed on the front side of the roller brush 3.

[0088] In one embodiment, this application provides a cleaning device that includes the floor brush described in the above embodiment. The cleaning device can be configured as a common household cleaning device such as a floor scrubber, vacuum cleaner, or robot vacuum cleaner.

[0089] In one embodiment, reference is made to Figure 9 As shown, this application provides a control method applied to the cleaning equipment in the above embodiments. The control method includes: obtaining the particle size of solid dirt on the surface to be cleaned through the dirt detection component 2, and transmitting the particle size information to the controller in the form of an electrical signal. After receiving the electrical signal transmitted by the dirt detection component 2, the controller sends a corresponding control command to the power mechanism 12. The power mechanism 12 adjusts the distance between the front end of the scraper body 11 and the roller brush 3 based on the control command.

[0090] Furthermore, when the cleaning equipment is in its initial working state (generally the default working state when the cleaning equipment is first started), the distance between the scraper body 11 and the roller brush 3 is B. The value of B should generally meet the performance requirements of the cleaning equipment in most working scenarios. Considering that the particle size of common solid dirt is generally 3~5mm, the value of B can generally be set between 3~5mm. However, for the sake of cleaning efficiency, an intermediate value can be selected as the specific value of B within the above range. Therefore, B can be approximately set to 4mm. In this case, the distance between the scraper body 11 and the roller brush 3 is moderate, the suction force of the cleaning equipment at the suction inlet is moderate, and it can ensure that the cleaning equipment can normally suck up most of the solid dirt.

[0091] Furthermore, for the target particle size detection threshold T1 of the low-level contaminant detection component, T1 should be less than B. For the target particle size detection threshold T2 of the high-level contaminant detection component, B should be less than T2.

[0092] Furthermore, as the cleaning equipment moves along the surface to be cleaned, it is determined whether the low-level dirt detection component and the high-level dirt detection component receive a detection signal (i.e., infrared rays), and the distance between the scraper body 11 and the roller brush 3 is adjusted accordingly based on the detection results of the low-level dirt detection component and the high-level dirt detection component.

[0093] When neither the infrared receiver 22 of the low-level dirt detection component nor the infrared receiver 22 of the high-level dirt detection component receives a detection signal, it indicates that the particle size of the solid dirt on the surface to be cleaned is relatively small or there is no solid dirt. The controller sends a control command to the power mechanism 12 to reduce the distance. Based on the control command, the power mechanism 12 drives the scraper body 11 to move closer to the roller brush 3, adjusting the distance between the scraper body 11 and the roller brush 3 to A, where A < B. For cleaning efficiency, the distance A between the scraper body 11 and the roller brush 3 should be appropriately smaller than the target particle size detection threshold T1 of the low-level dirt detection component, i.e., A < T1. Considering that the particle size of common small solid dirt particles is generally below 3 mm, the value of A can generally be set below 3 mm. Preferably, A can be set to approximately 2 mm.

[0094] When both the low-level and high-level dirt detection components receive detection signals from their infrared receivers 22, it indicates that the particle size of the solid dirt on the surface to be cleaned is relatively large. The controller then sends a control command to the power mechanism 12 to increase the distance between them. Based on the control command, the power mechanism 12 drives the scraper body 11 away from the roller brush 3, adjusting the distance between the scraper body 11 and the roller brush 3 to C, where B < C. For cleaning efficiency, the distance C between the scraper body 11 and the roller brush 3 should be appropriately greater than the target particle size detection threshold T2 of the high-level dirt detection component, i.e., T2 < C. Considering that the particle size of common large solid dirt particles is generally 5~10mm, the value of C can generally be set between 5~10mm. Preferably, C can be set to approximately 8mm.

[0095] It should be noted that, in the above steps, when adjusting the distance between the scraper body 11 and the roller brush 3, it is necessary to simultaneously determine whether the low-level dirt detection component and the high-level dirt detection component have received detection results. In practical applications, the above steps can also be simplified. When the low-level dirt detection component does not receive a detection result, it is directly determined that the particle size of the dirt is below T1, and the distance between the scraper body 11 and the roller brush 3 is directly adjusted to A; when the high-level dirt detection component receives a detection result, it is directly determined that the particle size of the dirt is above T2, and the distance between the scraper body 11 and the roller brush 3 is directly adjusted to C.

[0096] It should be noted that the distance between the scraper body 11 and the roller brush 3 in the above embodiments of this application generally represents the minimum distance between the scraping part 113 at the front end of the scraper body 11 and the outer circumferential surface of the roller brush 3.

[0097] It should be noted that the infrared detection component 2 in the above embodiments of this application is only one of the options available in practical applications for detecting dirt particle size. In other embodiments, image recognition, acoustic detection, and mechanical-physical detection methods can also be used to detect dirt particle size. Image recognition requires a camera and an image processor. The camera is responsible for acquiring images, and the image processor has a built-in recognition model that can identify the type of dirt in the image (e.g., rice grains, paper scraps, pet food, etc.) and estimate the particle size. Acoustic detection requires an ultrasonic transmitter and an ultrasonic receiver. The ultrasonic transmitter emits ultrasonic waves to the surface to be cleaned, and the ultrasonic receiver receives the echoes. Since dirt of different materials and states has different reflection and absorption characteristics of ultrasonic waves, the type of dirt can be determined based on these characteristics, and thus the particle size can be estimated. Mechanical-physical detection can indirectly determine the size of dirt particles by monitoring changes in the current or power of the motor driving the roller brush.

[0098] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0099] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A floor brush, characterized in that, The floor brush includes a roller brush (3) and a scraper assembly (1) adapted to be disposed beside the roller brush (3). The scraper assembly (1) includes a scraper body (11) which can move closer to or further away from the roller brush (3) along a first direction to form gaps of different sizes with the roller brush. The first direction has a constant angle with a reference plane suitable for the operation of the roller brush (3).

2. The floor brush according to claim 1, characterized in that, The angle between the first direction and the reference plane suitable for the operation of the roller brush (3) is 0°.

3. The floor brush according to claim 1, characterized in that, The scraper assembly (1) further includes a power mechanism (12), which includes a power source (121) and a transmission system connecting the scraper body (11) and the power source (121). The transmission system is used to convert the motion state of the output end of the power source (121) into a linear reciprocating motion state of the scraper body (11) along a set direction.

4. The floor brush according to claim 3, characterized in that, The power source (121) is a motor. The transmission system includes a lead screw (122), a moving part (123) threadedly engaged with the lead screw (122), and an anti-rotation structure that restricts the rotation of the moving part (123). The moving part (123) is connected to the scraper body (11) for driving the scraper body (11) to reciprocate linearly along a first direction.

5. The floor brush according to claim 4, characterized in that, The transmission system is used to convert the motion of the moving part (123) along the second direction into the motion of the scraper body (11) along the first direction, and the first direction and the second direction have an angle between them.

6. The floor brush according to claim 5, characterized in that, The transmission system includes a transmission groove (1233) and a transmission pin (111). The recessed direction of the transmission groove (1233) is perpendicular to the first direction and the second direction. The extension direction of the transmission groove (1233) has an angle with the first direction and the second direction. The transmission pin (111) is slidably connected in the transmission groove (1233). One of the transmission groove (1233) and the transmission pin (111) is formed in the scraper body (11), and the other is formed in the moving member (123).

7. The floor brush according to claim 4, characterized in that, The moving part (123) includes a first moving part (1231) that is threadedly engaged with the lead screw (122) and a second moving part (1232) that is connected to the scraper body (11). The anti-rotation structure includes a first anti-rotation plane formed on the peripheral wall of the first moving part (1231) and a second anti-rotation plane formed on the second moving part (1232) and in contact with the first anti-rotation plane. The second moving part (1232) is formed with a first stop surface and a second stop surface disposed opposite to each other along a second direction, and the first moving part (1231) is restricted between the first stop surface and the second stop surface.

8. The floor brush according to claim 7, characterized in that, The second moving part (1232) has a receiving groove (1234), and the corresponding groove wall of the receiving groove (1234) forms a first stop surface, a second stop surface and a second anti-rotation plane, respectively. The first moving part (1231) is at least partially located in the receiving groove (1234).

9. The floor brush according to claim 8, characterized in that, The second moving part (1232) has a through hole (1235) through which the lead screw (122) passes and penetrates the receiving groove (1234).

10. The floor brush according to claim 5, characterized in that, The scraper body (11) has a guide groove (112) recessed in the vertical direction. The scraper assembly (1) also includes a guide member (13) that is fixed in position and slidably connected in the guide groove (112). The length of the guide groove (112) in the first direction is greater than the length of the guide member (13) in the first direction. The two groove walls of the guide groove (112) that are arranged opposite to each other in the second direction are in contact with the peripheral wall of the guide member (13).

11. The floor brush according to claim 4, characterized in that, The scraper assembly (1) also includes an angle detection mechanism (14), which is used to detect the rotation angle of the output shaft of the motor in real time to determine the distance between the scraper body (11) and the roller brush (3).

12. The floor brush according to claim 3, characterized in that, The scraper body (11) has a first working position, a second working position and a third working position with the distance from the roller brush (3) increasing sequentially; The scraper assembly (1) also includes a position detection mechanism, which is able to obtain the position information of the scraper body (11) when the scraper body (11) moves to the first working position and / or the third working position.

13. The floor brush according to claim 1, characterized in that, The scraper assembly also includes a dirt detection component (2) and a controller. The dirt detection component (2) is used to detect the particle size of solid dirt on the surface to be cleaned, and the controller is used to control the distance between the scraper body (11) and the roller brush (3) based on the particle size of solid dirt on the surface to be cleaned.

14. The floor brush according to claim 13, characterized in that, The dirt detection component (2) includes an infrared emitter (21) and an infrared receiver (22) disposed on the front side of the roller brush (3) and arranged opposite to each other along the axial direction of the roller brush (3). The infrared emitter (21) is used to emit horizontal infrared light to the infrared receiver (22).

15. The floor brush according to claim 14, characterized in that, The dirt detection assembly (2) includes a telescopic arm (23) for carrying an infrared transmitter (21) or an infrared receiver (22), and a second elastic member (24) abutting the top of the telescopic arm (23). The telescopic arm (23) can extend and retract in the vertical direction to change its height. The second elastic member (24) is used to provide a downward reset force to the telescopic arm (23).

16. The floor brush according to claim 13, characterized in that, The dirt detection component (2) includes a low-level dirt detection component and a high-level dirt detection component arranged in layers.

17. The floor brush according to claim 16, characterized in that, The scraper body (11) includes a scraping part (113) located at one end near the roller brush (3). The target particle size detection threshold T1 of the low-level contaminant detection component is set to 3 mm. The target particle size detection threshold T2 of the high-level dirt detection component is set to 5 mm.

18. The floor brush according to claim 1, characterized in that, The floor brush includes a first elastic member abutting against the scraper body (11) on the side near or away from the roller brush (3). When the scraper body (11) moves away from the roller brush (3), the first elastic member is configured to provide a force to the scraper body (11) to cause the scraper body (11) to return to its original position.

19. A cleaning device, characterized in that, The cleaning equipment includes a floor brush as described in any one of claims 1 to 18.

Images