Floor washing machine capable of being cleaned in flat-lying mode

Abstract

The utility model discloses a scrubber capable of cleaning in a lying state, belongs to the technical field of cleaning equipment, and solves the problem that a floor brush is easy to tilt when a scrubber body is cleaned in a lying state at present. A scrubber capable of cleaning in a flat-lying mode comprises a scrubber body with a handle assembly, the lower end of the scrubber body is hinged to a floor brush with a cleaning part, a surface cleaning device has a flat-lying working state that the scrubber body is approximately parallel to a surface to be cleaned, a power assembly is arranged in the scrubber body and comprises a battery and / or a vacuum fan, and auxiliary wheels are arranged on the back of the scrubber body. When the auxiliary wheels are in the lying working state, the power assembly is outside the projection range of the to-be-cleaned surface and is close to the upper end of the machine body. The floor brush has the advantages that the floor brush can be prevented from being tilted in the cleaning process, and the gravity of the power assembly is dispersed on the auxiliary wheel and the floor brush, so that the pressure on the auxiliary wheel can be reduced, the abrasion of the auxiliary wheel in the operation process is reduced, and the service life of the auxiliary wheel is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, in particular to a floor scrubber capable of lying flat for cleaning. Background Art

[0002] The existing floor scrubber includes a body and a floor brush pivotally connected to the bottom of the body, and a handle is connected to the top of the body. The user holds the handle and controls the body and the floor brush to form an acute angle, while ensuring that the floor brush is always in contact with the surface to be cleaned, and can also obtain a more comfortable operating feel.

[0003] In order to clean some narrow areas such as under the bed, the machine body needs to be turned to a state almost parallel to the floor brush. In particular, the back of the machine body can easily collide or scratch the ground, causing damage to the outer surface of the machine body. In addition, the friction between the machine body and the ground will also cause greater resistance when pushing the floor scrubber to run.

[0004] In order to solve the above problems, Chinese Patent Publication No. CN219229770U discloses a utility model patent named "Surface Cleaning Device", in which parallel rollers are provided on the main body. When the surface cleaning device is in a lying state, that is, in a parallel posture, components with a large weight share of the surface cleaning device are arranged above the parallel rollers, such as components with a large weight share such as a motor assembly or a battery pack.

[0005] In the above design, when the body is lying down, the parallel rollers may be under great pressure because the components with a relatively large weight are pressed on them, which not only makes it difficult for the parallel rollers to roll, but also accelerates the wear of the parallel rollers. In addition, since the components with a relatively large weight are generally set at the end of the body close to the floor brush, when the body is in an upright state, the center of gravity of the entire body can be lowered, so that the user can better control the body.

[0006] like Figure 1As shown, when the machine body 2 is in a lying state to clean a low space such as a sofa or the bottom of a bed, the user is generally at the lower end or bent over, so that when the user holds the handle 1 to control the floor scrubber, the user does not apply force to the handle 1 horizontally, but applies a diagonally downward force F to the handle 1. At this time, with the parallel roller 4 as the fulcrum, the distance between the vertical downward component F1 of the force applied by the user to the handle 1 and the parallel roller 4 is relatively large, and the component F1 has a relatively large lever arm L1. Therefore, the moment M1 of the component F1, and because the component with a relatively large weight on the machine body 2 is located on the parallel roller 4 The moment generated by the gravity G1 of the machine body 2 is small or zero, and the parallel roller 4 is closer to the floor brush 3 relative to the handle 1. The moment arm of the gravity G2 of the floor brush 3 with the parallel roller 4 as the fulcrum is L2, and the moment generated by the gravity G2 of the floor brush 3 is M2. Since L2 is much smaller than L1, when the user controls the floor scrubber to move in a flat state, as long as a small downward component F1 is applied, M1>M2 will be made, so that the floor scrubber rotates with the parallel roller 4 as the fulcrum, causing the floor brush 3 to tilt off the surface to be cleaned, resulting in the problem that the floor brush 3 cannot be cleaned or the cleaning force is reduced. At the same time, when the floor brush tilts up, it will still cause the machine body or handle on the left side of the support wheel 4 to scrape the ground. Utility Model Content

[0007] The utility model aims to provide a floor scrubber that can be laid flat for cleaning, so as to solve the problem that the floor brush is easily lifted up when the machine body is in a laid flat state for cleaning.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a floor scrubber that can lie flat for cleaning, comprising a body with a handle assembly, the lower end of the body being hinged to a floor brush with a cleaning member, the floor scrubber having a lying flat working state in which the body is roughly parallel to the surface to be cleaned, a power assembly is arranged in the body, the power assembly comprises a battery and / or a vacuum blower, an auxiliary wheel is arranged on the back of the body, the auxiliary wheel is located outside the projection range of the power assembly on the surface to be cleaned and close to the upper end of the body in the lying flat working state.

[0009] In the above-mentioned floor scrubber capable of lying flat for cleaning, the distance between the auxiliary wheel and the gripping portion of the handle assembly is smaller than the distance between the auxiliary wheel and the floor brush.

[0010] In the above-mentioned floor scrubber capable of lying flat for cleaning, the auxiliary wheels are arranged on the rear side of the handle assembly.

[0011] In the above-mentioned floor scrubber capable of lying flat for cleaning, the handle assembly comprises a gripping portion in a closed ring shape, a button is provided on the gripping portion, and the auxiliary wheel is located directly below the button in the lying flat working state.

[0012] In the above-mentioned floor scrubber capable of lying flat for cleaning, the handle assembly comprises a gripping portion arranged obliquely toward the direction of the machine body, and the auxiliary wheels are arranged directly below the gripping portion in the lying flat working state.

[0013] In the above-mentioned floor scrubber capable of lying flat for cleaning, a clean water tank is provided on the floor brush, and a sewage tank is provided on the main body of the machine.

[0014] In the above-mentioned floor scrubber capable of lying flat for cleaning, the sewage tank is arranged on the back of the machine body, and the sewage tank at least forms a part of the back of the machine body.

[0015] In the above-mentioned floor scrubber that can lie flat for cleaning, the auxiliary wheels are arranged on the main body of the machine body, and the main body is provided with an installation cavity located above the power component, and at least one of the main control panel and the display panel is installed in the installation cavity. When the machine body is in a lying flat state, the auxiliary wheels are located in the projection area of ​​the installation cavity on the surface to be cleaned.

[0016] In the above-mentioned floor scrubber capable of lying flat for cleaning, when the body of the floor scrubber is in a lying flat state, the auxiliary wheels are arranged within the projection area of ​​the main control panel on the surface to be cleaned.

[0017] In the above-mentioned floor scrubber capable of lying flat for cleaning, the main body is provided with a handle insert, the handle insert is provided with a plug-in terminal that cooperates with the handle assembly, and the auxiliary wheel is close to the plug-in terminal.

[0018] After adopting the above technical solution, the utility model has the following advantages:

[0019] The auxiliary wheels are arranged on the back of the machine body, and the auxiliary wheels are located outside the projection range of the power assembly on the surface to be cleaned and close to the upper end of the machine body when the machine body is in a flat working state, so as to solve the problem that the floor brush is easily lifted when the machine body is in a flat state for cleaning. The machine body and the floor brush are hinged, and the angle between the machine body and the floor brush can be freely adjusted according to the user's operating habits and the position of the surface to be cleaned. When it is necessary to clean a lower place such as under a sofa or under a bed, the machine body can be turned to a flat state almost parallel to the surface to be cleaned, so that the floor brush can penetrate into these small places for cleaning. The power assembly is arranged in the machine body, so that there is enough space for the power assembly to be placed, and the auxiliary wheels are arranged outside the projection range of the power assembly on the surface to be cleaned and close to the upper end of the machine body when the machine body is in a flat working state. In this way, when the machine body is turned to be almost flush with the surface to be cleaned, the auxiliary wheels can contact the surface to be cleaned, which not only facilitates the movement of the floor scrubber during cleaning, but also prevents the machine body from touching the surface to be cleaned and preventing the machine body from being scratched.

[0020] When the floor scrubber is in a flat working state, the auxiliary wheel becomes a fulcrum. The length of the lever arm between the vertical component of the force applied by the user when holding the handle assembly and the auxiliary wheel will be significantly shortened compared with the prior art, that is, the torque generated by the user applying the same magnitude of downward component becomes smaller, and the gravity of the power assembly will also generate a torque that prevents the machine brush from tilting up. The distance between the floor brush and the auxiliary wheel increases, and the torque generated by the gravity of the floor brush will also increase. Therefore, the probability of the floor brush tilting up when the user operates the floor scrubber in a flat working state is greatly reduced, ensuring good contact between the floor brush and the surface to be cleaned, and achieving the expected cleaning effect. In addition, when the machine body is in a flat state, the power assembly is actually located between the auxiliary wheel and the floor brush, and the gravity of the power assembly will be dispersed on the auxiliary wheel and the floor brush, thereby reducing the pressure on the auxiliary wheel, reducing the wear of the auxiliary wheel during operation, extending the service life of the auxiliary wheel, and making it easier for users to operate the floor scrubber.

[0021] Furthermore, the distance between the auxiliary wheel and the gripping portion of the handle assembly is smaller than the distance between the auxiliary wheel and the floor brush. The auxiliary wheel is placed as close to the handle as possible relative to the floor brush, and the auxiliary wheel is used as a fulcrum, so that the floor brush obtains a larger force arm, while the gripping portion of the handle obtains a smaller force arm. The gripping portion can withstand a larger downward force without causing the floor brush to tilt, making it more convenient for users to operate the floor scrubber in a lying state to clean and obtain the expected cleaning effect.

[0022] Furthermore, the auxiliary wheel is arranged at the rear side of the handle assembly, so that the auxiliary wheel is as close as possible to the position where the user applies force to the body, reducing the torque applied to the body, preventing the brush from tilting up in the flat state, and playing a buffering role when the body is turned to the flat state, preventing the handle assembly from hitting the ground.

[0023] Furthermore, the handle assembly includes a closed annular gripping portion, on which a button is provided, and the auxiliary wheel is located directly below the button in the flat working state. The closed annular gripping portion is convenient for the user to hold and is not easy to loosen, and a button is provided on the gripping portion, so that the user's holding hand can directly issue control commands to the floor scrubber. In the flat state, when the user operates the button, the downward force directly passes through the auxiliary wheel, and the torque is zero at this time, which will cause the floor brush to tilt up.

[0024] Furthermore, the handle assembly includes a grip portion tilted toward the body, and the auxiliary wheel is disposed directly below the grip portion in the flat working state. The downward force applied by the user to the grip portion will directly pass through the fulcrum formed by the auxiliary wheel, so that no moment is generated to cause the floor brush to tilt along the auxiliary wheel, thereby avoiding the problem of the floor brush tilting in the flat working state due to excessive downward force applied by the user.

[0025] Furthermore, the floor brush is provided with a clean water tank, and the main body of the machine body is provided with a dirty water tank. The clean water tank is provided on the floor brush to increase the weight of the floor brush, so that the floor brush can better fit the surface to be cleaned. The clean water tank can also increase the weight of the floor brush to prevent the floor brush from being tilted. The dirty water tank is provided on the main body to facilitate the separation of clean water and dirty water, prevent the floor brush or the machine body from being too bloated, reduce the thickness of the floor brush and the machine body, and can enter a narrower space for cleaning.

[0026] Furthermore, the sewage tank is arranged on the back of the fuselage, and the sewage tank forms at least a part of the back of the fuselage. The sewage tank is arranged on the back of the fuselage, so that the front of the fuselage can be kept clean and tidy, and the overall appearance is improved. The sewage tank located on the back of the fuselage faces the user, and it is more convenient to take and put. When the fuselage is in a flat state, the sewage tank will also be closer to the surface to be cleaned, so that the center of gravity of the entire fuselage is lower, and cleaning in this state also makes the movement of the fuselage more stable.

[0027] Furthermore, the auxiliary wheel is arranged on the main body of the fuselage, and the main body is provided with an installation cavity located above the power assembly, and at least one of the main control panel and the display panel is installed in the installation cavity. When the fuselage is in a flat state, the auxiliary wheel is located in the projection area of ​​the installation cavity on the surface to be cleaned. When the auxiliary wheel is arranged in the projection area of ​​the safety cavity in the flat state, when the fuselage turns to the flat state, the auxiliary wheel can play a buffering role, reduce the vibration damage to the electrical components in the installation cavity at this time, and better protect the normal operation of the electrical components in the installation cavity.

[0028] Furthermore, when the body is in a flat state, the auxiliary wheels are arranged in the projection area of ​​the main control board on the surface to be cleaned, so that the auxiliary wheels are closer to the main control board in a flat state, further reducing the impact on the main control board when the body is laid down, and preventing the main control board from being damaged.

[0029] Furthermore, the main body is provided with a handle insert, the handle insert is provided with a plug terminal that matches the handle assembly, and the auxiliary wheel is close to the plug terminal, so as to prevent the handle from falling off or the plug terminal from loosening due to the collision with the bottom surface when the fuselage is lying flat. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The utility model is further described below in conjunction with the accompanying drawings:

[0031] Figure 1 This is a force analysis diagram of an existing floor scrubber in a flat working state;

[0032] Figure 2 This is a force analysis diagram of the utility model of the floor scrubber capable of lying flat for cleaning in a lying flat working state;

[0033] Figure 3 It is a schematic diagram of the structure of the utility model when the fuselage is in a vertical state;

[0034] Figure 4 The structure of the back of the fuselage in the first embodiment of the utility model is shown in FIG. Figure 1 ;

[0035] Figure 5 The structure of the back of the fuselage in the first embodiment of the utility model is shown in FIG. Figure 2 ;

[0036] Figure 6 The structure of the back of the fuselage in the first embodiment of the utility model is shown in FIG. Figure 3 ;

[0037] Figure 7 It is a cross-sectional view of the upper part of the fuselage in the first embodiment of the utility model;

[0038] Figure 8 for Figure 7 Stereoscopic view in the AA section direction;

[0039] Fig. 9 This is a schematic diagram of the structure of the second embodiment of the utility model when the fuselage is in a flat state;

[0040] Fig.10 This is a schematic diagram of the structure of the third embodiment of the utility model when the fuselage is in a flat state.

[0041] The accompanying drawings are marked as follows:

[0042] The body 100, the handle assembly 110, the gripping part 111, the button 112, the power assembly 120, the auxiliary wheel 130, the axle 131, the auxiliary wheel body 132, the rubber bag 133, the buckle 134, the sewage tank 140, the main body 150, the installation cavity 151, the main control board 152, the display board 153, the isolation gap 154, the handle tube 155, the plug terminal 156, the floor brush 200, and the clean water tank 210. DETAILED DESCRIPTION

[0043] A floor scrubber capable of lying flat for cleaning comprises a body 100 having a handle assembly 110, the lower end of the body 100 being hinged to a floor brush 200 having a cleaning member, and the body 100 and the floor brush 200 being rotatable to 180 degrees or close to 180 degrees, so that the body 100 of the floor scrubber can lie flat parallel to the ground for working, and can be extended into a shorter space such as under a sofa or under a bed for use during cleaning.

[0044] The body 100 is provided with a power assembly 120, which includes a battery and / or a vacuum fan. The battery mainly provides electrical energy for the floor scrubber so that the floor scrubber can be free from the constraints of the wires, while the vacuum fan is used to generate suction to remove the stains on the surface to be cleaned. The auxiliary wheel 130 is arranged on the back of the body 100 above the power assembly 120, that is, the auxiliary wheel 130 is farther away from the floor brush 200 than the power assembly 120. When the body 100 is in a flat working state, the auxiliary wheel 130 is located outside the projection range of the power assembly 120 on the surface to be cleaned and is closer to the upper end of the body 100. At this time, the auxiliary wheel 130 is used as a fulcrum, such as Figure 2 As shown in the figure, the force that causes the floor brush to tilt up at this time is the torque generated by the downward component F1 of the force F applied by the user to the handle assembly 110, and the torque that hinders the floor brush from tilting up is mainly the torque generated by the gravity G1 of the power assembly 120 and the torque generated by the gravity G2 of the floor brush 200. Since the position of the auxiliary wheel 130 is farther away from the floor brush 200 than in the prior art, the force arm L1 of the downward component F1 applied by the user will be reduced. When the downward component F1 applied by the user remains unchanged, the torque M1 of F1 will also be reduced, while the force arm L2 of the gravity G2 of the floor brush will increase, and the torque M2 of the gravity G2 of the floor brush will also increase. The moment M3 of the gravity G1 of the force component, if the floor brush can be tilted, it must satisfy M1>M2+M3. Obviously, to meet the above conditions, the user needs to apply a greater downward force, that is, the technical solution of the utility model is adopted. The floor brush 200 of the floor scrubber is more difficult to be tilted in the flat working state, and the body 100 can withstand the greater downward pressure applied by the user to ensure that the floor brush 200 will not tilt. The floor scrubber works more stably in the flat state, and the floor brush 200 can always be in contact with the surface to be cleaned. And because the floor brush 200 is not easy to tilt, the vacuum effect between the floor brush 200 and the surface to be cleaned is also satisfied, achieving the best cleaning effect. In addition, in the flat state, the power component 120 is located between the auxiliary wheel 130 and the roller of the floor brush 200, and the weight of the power component 120 will be shared. Relatively speaking, the pressure on the auxiliary wheel 130 will be reduced. During the movement of the floor scrubber, the wear on the auxiliary wheel 130 will also be reduced, and the user can operate the floor scrubber more easily.

[0045] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0046] Embodiment 1:

[0047] like Figures 2 to 8As shown, the utility model provides a floor scrubber that can be laid flat for cleaning, including a body 100 with a handle assembly 110, the body 100 having a mounting cavity 151 formed by the cooperation of a front shell and a rear shell, the front shell and the rear shell are generally made of lightweight materials such as plastic, and the front shell and the rear shell are fixedly connected by buckles or screws. A floor brush 200 with a cleaning member is hinged at the lower end of the body 100. When the floor scrubber is in working state, the floor brush 200 is always attached to the surface to be cleaned, and the surface to be cleaned is cleaned by the cleaning member. The handle assembly 110 is generally arranged at the top of the body 100, so that it is convenient for the user to hold the handle to control the operation of the floor scrubber. By controlling the rotation angle between the body 100 and the floor brush 200, the body 100 can be placed in an upright or lying state, and the body 100 can be controlled to work at any angle between upright and lying according to user needs. When cleaning a relatively narrow place such as under a bed or under a sofa, the user can control the body 100 to be in a flat working state roughly parallel to the surface to be cleaned, which not only allows the floor brush 200 to extend into these narrow spaces, but also allows the body 100 to enter the narrow space, thereby making it more convenient to clean the deeper surfaces to be cleaned.

[0048] The body 100 is provided with a power assembly 120, which includes a battery and / or a vacuum blower. Both the battery and the vacuum blower are relatively heavy components, and they can be arranged in the body 100 according to design requirements. In general, the power assembly 120 is arranged on the side of the body 100 close to the floor brush 200, so that when the body 100 is in a vertical state, the center of gravity of the body 100 is lowered, making it easier to control the floor scrubber. Auxiliary wheels 130 are arranged on the back of the body 100 above the power assembly 120. When the floor scrubber is in a flat working state, the auxiliary wheels 130 come into play and contact the surface to be cleaned, such as Figure 2As shown, the floor scrubber is in a flat working state. In the figure, F is the force applied by the user when holding the handle assembly 110, G1 is the gravity of the power assembly 120, and G2 is the gravity of the floor brush 200. Since the user cannot completely keep his arm in a horizontal state to exert force on the handle assembly 110, F will inevitably generate a downward component force F1. If this component force is large enough, the floor brush 200 will be tilted with the auxiliary wheel 130 as the fulcrum, while the gravity G1 of the power assembly 120 and the gravity G2 of the floor brush 200 basically remain constant. Since the auxiliary wheel 130 of the present invention is closer to the handle assembly 110 in the lying working state, the force arm L1 of the downward component F1 of the force F applied by the user will be shortened, and the corresponding force arm L3 of the gravity G1 of the power assembly 120 and the force arm L2 of the gravity G2 of the floor brush 200 will be increased, that is, the floor scrubber can withstand a greater downward force from the user without causing the floor brush 200 to tilt up, and when the user normally operates the floor scrubber in the lying working state, the floor brush 200 can be guaranteed to clean in the best working state. On the other hand, the auxiliary wheel 130 can reduce the friction between the body 100 and the surface to be cleaned when the floor scrubber is in the lying working state, making it more convenient for the user to control the movement of the floor scrubber.

[0049] Furthermore, the distance between the auxiliary wheel 130 and the gripping portion 111 of the handle is smaller than the distance between the auxiliary wheel 130 and the floor brush 200. The gripping portion 111 of the handle is generally located at the end of the handle. The auxiliary wheel 130 is closer to the gripping portion 111 of the handle, which will further shorten the torque of the downward pressure generated when the user holds it, thereby increasing the difficulty of lifting the floor brush 200, ensuring that the floor brush 200 will not be lifted up with the auxiliary wheel 130 as a fulcrum under normal use.

[0050] like Figure 2 , Figure 3As shown, the floor scrubber also includes a clean water tank 210 and a sewage tank 140. The clean water tank 210 is connected to the floor brush 200 and can spray clean water onto the cleaning parts of the floor brush 200 to soften the stains on the surface to be cleaned and improve the cleaning effect. The sewage tank 140 is used to collect sewage on the surface to be cleaned. The sewage is sucked up from the cleaning surface by a vacuum fan and separated from the air before entering the sewage tank 140 for collection. In this embodiment, the clean water tank 210 is set on the floor brush 200. On the one hand, the length of the pipeline between the clean water tank 210 and the cleaning parts can be shortened. On the other hand, the clean water tank 210 can increase the overall weight of the floor brush 200, so that the pressure of the cleaning parts in contact with the surface to be cleaned is greater, thereby improving the cleaning effect. The sewage tank 140 is set on the main body 150 of the fuselage 100 to prevent the floor brush 200 from becoming too large and affecting the control and passability. Compared with setting both the sewage tank 140 and the clean water tank 210 on the body 100, the above scheme not only moves the center of gravity downward when the floor scrubber is in a vertical state, making the operation more stable, but also when it is in a flat working state, the torque generated by the floor brush 200 plus the weight of the clean water tank 210 will increase, so that the force required to lift the floor brush 200 will also be greater. It will also be more difficult for the user to lift the floor brush 200 when operating the floor scrubber, thereby ensuring that the floor brush 200 can work close to the surface to be cleaned.

[0051] Furthermore, the sewage tank 140 is arranged on the back of the body 100, and the sewage tank 140 at least forms a part of the back of the body 100. The sewage tank 140 is arranged on the back of the body 100, which ensures the integrity of the front of the body 100 and does not destroy the beauty of the entire floor scrubber; in addition, the body 100 is in a vertical state, and the back of the body 100 faces the user, so that the user can easily remove the sewage tank 140 after cleaning, and the sewage tank 140 at least forms a part of the back of the body 100, which eliminates the need to set a cover for the sewage tank 140, which is conducive to reducing the thickness of the entire body 100, making the body 100 thinner and suitable for use in a smaller space.

[0052] like Figure 4 As shown, in this embodiment, there is only one auxiliary wheel 130, which is arranged on the vertical center line of the back of the fuselage 100, and can maintain the balance of the fuselage 100 when the fuselage 100 is in a flat working state. Figure 5 As shown, two auxiliary wheels 130 arranged side by side on the back of the fuselage 100 are provided; Figure 6 As shown, two auxiliary wheels 130 are arranged up and down along the vertical center line of the back of the fuselage 100. The number and arrangement of the auxiliary wheels 130 can be selected according to the weight and size of the fuselage 100.

[0053] like Figure 7 , Figure 8As shown, the auxiliary wheel 130 is arranged on the main body 150 of the fuselage 100, the power assembly 120 is installed in the installation cavity 151, and at least one of the main control board 152 and the display board 153 is also arranged in the installation cavity 151. The components in the installation cavity 151 can be protected by the front shell and the rear shell, and the auxiliary wheel 130 is arranged in the projection area of ​​the installation cavity 151 on the surface to be cleaned in the flat working state. When the fuselage 100 is turned from the vertical state to the flat working state, the fuselage 100 contacts the surface to be cleaned and generates an impact. Through the above-mentioned setting position of the auxiliary wheel 130, the auxiliary wheel 130 is located directly below the installation cavity 151, which can effectively reduce the impact of the vibration caused by the fuselage 100 hitting the surface to be cleaned on the components in the installation cavity 151, reduce or avoid the deformation of the main control board 152, the display board 153 and other electrical components caused by the vibration, thereby avoiding the occurrence of desoldering and the like, and extending the service life of these electrical components.

[0054] Furthermore, the auxiliary wheel 130 is arranged in the projection area of ​​the main control board 152 on the surface to be cleaned in the lying flat working state, that is, the auxiliary wheel 130 is located directly below the main control board 152 in the lying flat working state, so that the vibration generated by the surface to be cleaned when the body 100 is switched to the lying flat working state can minimize the impact on the main control board 152. Moreover, the auxiliary wheel 130 is located below the main control board 152, and the area occupied by the auxiliary wheel 130 is not as large as the main control board 152. In order to accommodate the auxiliary wheel 130, the installation position of the main control board 152 is raised, so that there is enough heat dissipation space between the main control board 152 and the back of the installation cavity 151.

[0055] The auxiliary wheel 130 does not completely protrude from the back of the fuselage 100 during installation. A groove is designed on the back of the fuselage 100 to accommodate part of the auxiliary wheel 130, which is also to facilitate the installation of the auxiliary wheel 130. The groove for accommodating the auxiliary wheel 130 will occupy part of the space in the installation cavity 151, that is, the back of the installation cavity 151 will partially protrude toward the front of the fuselage 100. Since the auxiliary wheel 130 is below the main control board 152 in the flat working state, in order to prevent the main control board 152 from contacting the back of the installation cavity 151 at the position corresponding to the auxiliary wheel 130, an isolation gap 154 ​​is provided between the main control board 152 and the back of the installation cavity 151, so that the main control board 152 will be in a suspended state, which can effectively prevent the main control board 152 from being damaged when the fuselage 100 is switched to the flat working state.

[0056] In order to facilitate transportation and storage, the handle assembly 110 is detachably connected to the main body 150 of the fuselage 100. A handle insert 155 is provided on the main body 150 of the fuselage 100. The handle assembly 110 is inserted into the handle insert 155. A plug terminal 156 is also provided in the handle insert 155. The plug terminal 156 is electrically connected to the main control board 152. When the handle assembly 110 is inserted into the handle insert 155, the plug terminal 156 is electrically connected to the button 112 of the handle assembly 110, so that the button 112 can control the floor scrubber. The auxiliary wheel 130 is arranged close to the plug terminal 156, so as to prevent the fuselage 100 from hitting the ground when switching to the flat working state, causing the handle to fall off or the plug terminal 156 to loosen.

[0057] Figure 8 As shown, the auxiliary wheel 130 is longitudinally arranged on the back of the fuselage 100, that is, the axis of the auxiliary wheel 130 is perpendicular to the length direction of the fuselage 100, and the auxiliary wheel 130 protrudes from the back of the fuselage 100 by at least 3.5 mm to prevent the fuselage 100 from being deformed and contacting the surface to be cleaned due to the downward force when the fuselage 100 is in a flat working state. The auxiliary wheel 130 includes an axle 131, an auxiliary wheel body 132 and a rubber bag 133. The axle 131 passes through the auxiliary wheel body 132 and the two are rotatably connected. The rubber bag 133 is coated on the outside of the auxiliary wheel body 132. In addition to playing a buffering role, the rubber bag 133 can also reduce the vibration of the auxiliary wheel 130 when it runs on the surface to be cleaned, playing a silent role; the two ends of the axle 131 are fixed to the back of the fuselage 100 by buckles 134.

[0058] By arranging the auxiliary wheel 130 on the back of the fuselage 100 above the power assembly 120, when the fuselage 100 is in a lying working state, the auxiliary wheel 130 becomes a fulcrum, and the force applied by the user to the fuselage 100 and the gravity of the power assembly 120 are respectively located on both sides of the fulcrum, and the power of the power assembly 120 can be used to balance the downward pressure applied by the user to the fuselage 100, thereby preventing the floor brush 200 from being lifted up during the cleaning process, ensuring good contact between the floor brush 200 and the surface to be cleaned, and achieving the expected cleaning effect. In addition, since the auxiliary wheel 130 is arranged on the back of the fuselage 100 above the power assembly 120, when the fuselage 100 is in a lying state, the gravity of the power assembly 120 will be dispersed on the auxiliary wheel 130 and the floor brush 200, thereby reducing the pressure on the auxiliary wheel 130, reducing the wear of the auxiliary wheel 130 during operation, and extending the service life of the auxiliary wheel 130.

[0059] Embodiment 2:

[0060] The difference from the first embodiment is that the auxiliary wheel 130 is not installed on the back of the main body 150 of the fuselage 100, but is installed on the rear side of the handle assembly 110, that is, Fig. 9When the middle body 100 is in a flat working state, the lower side of the handle assembly 110 allows the auxiliary wheel 130 to be as close as possible to the force point of the user holding the handle assembly 110, thereby minimizing the force arm of the user's force relative to the auxiliary wheel 130. When operating the floor scrubber in a flat working state, it is more difficult to lift the floor brush 200.

[0061] Furthermore, the handle assembly 110 includes a gripping portion 111 in a closed ring shape. The user can hold the gripping portion 111 at any position according to the operating habits to obtain a good hand feel. A button 112 is provided on the gripping portion 111, and the working state of the floor scrubber can be controlled by the button 112. The button 112 is arranged on the gripping portion 111, and the user can press the button 112 for control without releasing the gripping portion 111 when holding the floor scrubber with one hand. In the lying working state, the auxiliary wheel 130 is located directly below the button 112. When the user controls the button 112, a downward force is applied to the button 112. Since the auxiliary wheel 130 is located directly below the button 112, the force arm of the force applied to the button 112 is zero at this time, that is, when the user presses the button 112, the floor brush 200 will not be lifted.

[0062] Alternatively, the handle assembly 110 may also include a gripping portion 111 that is tilted toward the body 100. The gripping portion 111 is configured to allow the user to fully contact the gripping portion 111 with the palm when the floor scrubber is in a flat working state, so that the user can obtain a better operating feel. The auxiliary wheel is configured just below the gripping portion, so that the downward component force applied by the user to the gripping portion 111 passes through the auxiliary wheel or the lever arm is very small. At this time, the torque generated by the downward component force is zero or close to zero. When the user normally operates the floor scrubber to work flatly, it is almost impossible to cause the floor brush 200 to tilt up, thereby ensuring the normal cleaning work of the floor brush 200 in the flat working state.

[0063] For other contents not described in this embodiment, please refer to Embodiment 1.

[0064] Embodiment three:

[0065] like Fig.10As shown, the difference from the first embodiment is that in this embodiment, auxiliary wheels 130 are respectively provided on the back of the fuselage 100 and the rear side of the handle assembly 110. The position of the auxiliary wheels 130 on the rear side of the handle assembly 110 can refer to the second embodiment. When the fuselage 100 is switched to the flat working state, the main body 150 and the handle assembly 110 of the fuselage 100 can be protected. The auxiliary wheels 130 at two positions can be set along the center line of the length direction of the fuselage 100. In the flat working state, the fuselage 100 can also be kept balanced, and it is more stable and smooth when the user drives the floor scrubber to move. It is not easy for the user to cause the floor brush 200 to tilt up in normal use, so that the floor brush 200 can always be kept close to the surface to be cleaned to achieve the expected cleaning effect.

[0066] For other contents not described in this embodiment, please refer to Embodiment 1.

[0067] In addition to the above preferred embodiments, the present invention has other implementation modes. Those skilled in the art can make various changes and modifications based on the present invention. As long as they do not depart from the spirit of the present invention, they should all fall within the scope defined by the claims attached to the present invention.

Claims

1. A floor scrubber capable of lying flat for cleaning, comprising a body with a handle assembly, the lower end of the body being hinged to a floor brush with a cleaning member, the floor scrubber being capable of lying flat in a working state in which the body is substantially parallel to a surface to be cleaned, characterized in that: A power assembly is arranged in the fuselage, and the power assembly includes a battery and / or a vacuum blower. Auxiliary wheels are arranged on the back of the fuselage, and the auxiliary wheels are located outside the projection range of the power assembly on the surface to be cleaned and close to the upper end of the fuselage when the fuselage is in a flat working state.

2. A floor scrubber capable of lying flat for cleaning according to claim 1, characterized in that: The distance between the auxiliary wheel and the gripping portion of the handle assembly is smaller than the distance between the auxiliary wheel and the floor brush.

3. The floor scrubber capable of lying flat for cleaning according to claim 1, characterized in that: The auxiliary wheel is arranged on the rear side of the handle assembly.

4. A floor scrubber capable of lying flat for cleaning according to claim 3, characterized in that: The handle assembly comprises a closed ring-shaped gripping portion, on which a button is arranged, and in a lying working state, the auxiliary wheel is located directly below the button.

5. The floor scrubber capable of lying flat for cleaning according to claim 3, characterized in that: The handle assembly comprises a gripping portion which is tilted toward the body of the machine, and the auxiliary wheels are arranged directly below the gripping portion in a lying working state.

6. The floor scrubber capable of lying flat for cleaning according to claim 1, characterized in that: The floor brush is provided with a clean water tank, and the main body of the machine body is provided with a dirty water tank.

7. The floor scrubber capable of lying flat for cleaning according to claim 6, characterized in that: The sewage tank is arranged on the back of the fuselage, and the sewage tank at least forms a part of the back of the fuselage.

8. The floor scrubber capable of lying flat for cleaning according to claim 1, characterized in that: The auxiliary wheels are arranged on the main body of the fuselage, and an installation cavity located above the power component is arranged in the main body. At least one of a main control panel and a display panel is installed in the installation cavity. When the fuselage is in a flat state, the auxiliary wheels are located in the projection area of ​​the installation cavity on the surface to be cleaned.

9. The floor scrubber capable of lying flat for cleaning according to claim 8, characterized in that: When the machine body is in a flat lying state, the auxiliary wheels are arranged in the projection area of ​​the main control board on the surface to be cleaned.

10. The floor scrubber capable of lying flat for cleaning according to claim 8, characterized in that: The main body is provided with a handle insert tube, the handle insert tube is provided with a plug-in terminal matched with the handle assembly, and the auxiliary wheel is close to the plug-in terminal.

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