Surface cleaning device capable of lying flat for cleaning

Abstract

The utility model discloses a surface cleaning device capable of lying flat for cleaning, which belongs to the technical field of cleaning equipment and comprises a machine body, a ground brush and a liquid supply component, the machine body is provided with a fan and a sewage bucket, the ground brush is provided with a sewage suction port, the sewage bucket is provided with a sewage inlet pipe, the sewage bucket has an inclined state and a lying flat state along with the machine body, and the machine body is flat and comprises a front shell and a rear shell. A first mounting cavity with an opening in the front side is formed in the lower portion of the front shell, the sewage bucket is arranged at the first mounting cavity, the sewage inlet pipe is arranged close to the front wall of the sewage bucket, the front wall of the sewage bucket is flush with the front surface of the front shell and forms part of the front surface of the machine body, and the front surface of the machine body is not higher than the upper surface of the floor brush when the machine body is in a flat state. The matching relation between the sewage pail and the machine body is reasonably set, so that the front surface of the machine body is kept flat when the sewage pail is installed, the front surface of the sewage pail is prevented from protruding out of the front surface of the machine body, and the flat machine body can drive the floor brush to smoothly enter a low space for effective cleaning when being in a flat state.

Description

Technical Field

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

[0002] Existing surface cleaning machines generally include a body, a floor brush, a liquid supply component and a sewage suction component. The floor brush is provided with a sewage suction port and a cleaning member driven by a motor. The liquid supply component supplies liquid to the cleaning member so that the cleaning member can absorb the liquid and moisten it and then wipe the surface to be cleaned. The sewage suction fan provides suction to generate negative pressure in the sewage bucket and form a sewage suction airflow flowing through the sewage bucket. The dirt at the sewage suction port can flow into the sewage bucket along the sewage suction airflow.

[0003] In order to enable the surface cleaning machine to clean the surfaces to be cleaned in low spaces such as under the bed, sofa, and cabinet, the fuselage of some existing surface cleaning machines can be rotated backward at a large angle relative to the floor brush to a lying state, and the lying fuselage can drive the floor brush to extend into the low space for cleaning. Since the sewage bucket is generally arranged on the fuselage, the power source assembly consisting of the sewage suction fan and the battery pack is arranged on the fuselage and located above the sewage bucket. The sewage bucket is generally provided with a maximum liquid level line and a liquid level electrode is arranged in the bucket. The detection point of the liquid level electrode is set at the maximum liquid level line. In order to ensure that the dirty liquid in the sewage bucket will not flow out from the bucket cover of the sewage bucket, the maximum liquid level line is at a certain distance from the bucket cover of the sewage bucket, leaving a certain space for the shaking dirty liquid or the dirty liquid flowing in from the sewage inlet pipe. Especially when the fuselage is tilted, it can prevent the dirty liquid from being sucked into the fuselage from the bucket cover to contaminate the suction fan and other components. When the sewage bucket lies down with the machine body, the height of the sewage suction fan, the sewage bucket, the pipe mouth of the sewage inlet pipe in the sewage bucket and other structures decreases as the machine body tilts, and the height difference between the liquid level in the sewage bucket and the sewage suction fan is greatly reduced. When the power of the sewage suction fan remains unchanged, the lift of the sewage liquid flowing from the sewage suction port on the floor brush through the sewage inlet pipe into the sewage bucket remains unchanged. When the sewage liquid flowing into the sewage bucket from the sewage inlet pipe moves toward the sewage suction fan under the action of negative pressure suction when lying down, and can reach a position closer to the bucket cover. The sewage flowing into the sewage bucket can move to a position closer to the exhaust duct on the bucket cover, and even enter the machine body to pollute the sewage suction fan.

[0004] When the sewage bucket is arranged on the rear side of the machine body, the sewage bucket lying backward with the machine body is closer to the surface to be cleaned, and the sewage bucket and the sewage inlet pipe are also closer to the surface to be cleaned, and the sewage inlet pipe is in a position parallel to or nearly horizontal with the surface to be cleaned, so that the sewage suction fan can suck the sewage into the sewage inlet pipe with a smaller suction force. At this time, the sewage suction fan also lies down with the machine body to a position close to the surface to be cleaned, that is, the sewage suction fan and the sewage bucket are basically at the same height, which results in insufficient safety distance between the sewage liquid sucked into the sewage bucket from the sewage inlet pipe and the bucket cover or the sewage suction fan. When the user pushes and pulls the machine body forward and backward for cleaning, the shaking of the sewage liquid will be aggravated, and the probability of the sewage liquid hitting the bucket cover of the sewage bucket will increase. The probability of the sewage liquid entering the machine body from the bucket cover and contaminating the sewage suction fan is also greatly increased. In order to prevent this situation, the power of the sewage suction fan is generally reduced. The closer the sewage inlet pipe is to the surface to be cleaned, the smaller the suction force of the sewage suction fan is required, and the smaller the working power of the sewage suction fan is. If the power of the sewage suction fan is reduced less, the risk of the sewage suction fan being contaminated by dirty liquid will be increased. When the sewage suction fan is started, a larger current is generally required (generally about 4 times the normal working current). The large current starting makes the suction force of the sewage suction fan larger, which will increase the risk of dirty liquid rushing from the sewage inlet pipe to the barrel cover to contaminate the sewage suction fan. If the power of the sewage suction fan is too small, although the probability of dirty liquid contaminating the sewage suction fan is reduced, when the sewage suction fan directly enters the lying mode for cleaning, the sewage suction fan is started with a smaller current or a smaller power, which will make it difficult to start the sewage suction fan. Moreover, in normal cleaning work, the too small power of the sewage suction fan will also lead to a decrease in cleaning force and a poor suction effect. Therefore, the working ability of the surface cleaning machine when lying flat is greatly reduced, which is not conducive to improving the user experience. Utility Model Content

[0005] In order to solve the shortcomings and deficiencies in the above-mentioned prior art, the utility model provides a surface cleaning device that can lie flat for cleaning, and reasonably arranges the matching relationship between the sewage bucket and the fuselage, so that the front surface of the fuselage can remain flat when the sewage bucket is installed, and the front wall of the sewage bucket is prevented from protruding forward from the front surface of the fuselage, so that the flat fuselage can drive the floor brush to smoothly enter the low space for effective cleaning when it is in a lying flat state.

[0006] In order to achieve the above-mentioned technical objectives, the utility model provides a surface cleaning device that can lie flat for cleaning, comprising a body provided with a fan and a sewage bucket, a floor brush pivotally connected to the lower end of the body, and a liquid supply assembly for providing cleaning liquid, the floor brush being provided with a sewage suction port, the sewage bucket being provided with a sewage inlet pipe connected to the sewage suction port, the sewage bucket having an inclined state and a lying flat state following the body, the body being in a flat shape with a front-to-back thickness less than a left-to-right width, the body comprising a front shell and a rear shell that are buckled together front and back, the lower part of the front shell being concave backwards to form a first installation cavity with an open front side, the sewage bucket being arranged at the first installation cavity, the sewage inlet pipe being arranged close to the front wall of the sewage bucket, the front wall of the sewage bucket being flush with the front surface of the front shell and constituting a partial front surface of the body, and the front surface of the body being not higher than the upper surface of the floor brush when the body is in the lying flat state.

[0007] Preferably, a transfer tube for connecting the sewage suction port and the sewage inlet pipe is provided at the lower end of the fuselage, and the transfer tube is arranged close to the front surface of the front shell so that the transfer tube is arranged upward when the fuselage is in a lying state.

[0008] Preferably, the sewage bucket is flat with a front-to-back thickness smaller than the left-to-right width, the left and right walls of the first installation cavity are not higher than the front wall of the sewage bucket, and the front wall of the sewage bucket is not higher than the upper and lower walls of the first installation cavity.

[0009] Preferably, the surface cleaning device further comprises a power source assembly, the power source assembly comprises a battery pack and the fan, the battery pack has two parts and is respectively arranged on the left and right sides of the fan, and the central axis plane of the power source assembly is arranged to coincide with the central axis plane of the fuselage.

[0010] Preferably, the upper portion of the front shell is concave forward to form a second installation cavity with an open rear side, and the power source assembly is arranged in the second installation cavity, and the power source assembly includes a control module arranged above the battery pack.

[0011] Preferably, the power source assembly includes an outer shell and a control module, and the fan, battery pack and control module are arranged in the outer shell. The upper part of the front shell is recessed backward to form a second installation cavity with an open front side. The power source assembly is detachably arranged in the second installation cavity, and the front surface of the power source assembly arranged in the second installation cavity is flush with the front surface of the front shell and constitutes a partial front surface of the fuselage.

[0012] Preferably, the power source assembly is provided with a handle, which includes two split parts symmetrically arranged and rotatably connected to the outer shell, the two split parts rotated toward each other and closed together to form a handle protruding from the outer shell, and the two split parts rotated away from each other to fit the outer shell or embedded in a groove of the outer shell.

[0013] Preferably, the front wall of the sewage bucket is provided with a concave cavity concave backwards, the sewage inlet pipe is arranged in the concave cavity and is not higher than the front wall of the sewage bucket, and the upper end of the sewage inlet pipe extends into the sewage bucket and is arranged toward the rear wall of the sewage bucket; or, the sewage inlet pipe is arranged in the sewage bucket and is arranged close to the front wall of the sewage bucket.

[0014] Preferably, a rotatable handle is provided on the front wall of the sewage bucket, and the handle has a holding state and a relaxed state. The handle in the holding state protrudes from the front wall of the sewage bucket, and the handle in the relaxed state fits the front wall of the sewage bucket or is embedded in a groove on the front wall of the sewage bucket.

[0015] Preferably, an air inlet passage for connecting the sewage bucket and the fan is provided between the first installation cavity and the second installation cavity.

[0016] After adopting the above technical solution, the utility model has the following advantages:

[0017] 1. The surface cleaning device provided by the utility model is preferably configured to have a flat body with a front-to-back thickness less than the left-to-right width, and the shape of the body is reasonably configured to reasonably reduce the height of the body relative to the surface to be cleaned when the body is in a lying state. When the body is in a lying state, the front surface of the body is not higher than the upper surface of the floor brush, so that the body can drive the floor brush to smoothly enter the low space for effective cleaning, avoiding the situation where the front surface of the body is higher than the upper surface of the floor brush when the body is in a lying state, resulting in a limited distance for the floor brush to enter the low space and inability to effectively clean.

[0018] The fuselage includes a front shell and a rear shell that are buckled together. The lower part of the front shell is concave backward to form a first installation cavity with an open front side. The sewage bucket is arranged in the first installation cavity, that is, the sewage bucket is arranged on the front side of the fuselage. The space occupied by the power source component and the control component in the front and rear directions of the fuselage is saved, and the thickness of the fuselage in the front and rear directions is thinned, so that the fuselage is lower when lying flat. When the fuselage is in a lying flat state for cleaning, more and more dirty liquid in the sewage bucket is spread out from bottom to top and rises slowly (compared with the upright state or inclined state). In this way, the weight distribution of the sewage bucket can be optimized, and the center of gravity can be appropriately lowered, so that the sewage bucket is more stably located in the first installation cavity. Even if the fuselage shakes, the impact on the liquid level is small, providing users with better control performance. The shaking of the fuselage has little impact on the dirty liquid in the sewage bucket, which can improve the operating stability and cleaning efficiency of the surface cleaning device when lying flat. When the sewage bucket is in a lying state with the fuselage body, the sewage bucket is located on the upper part of the fuselage, and the height of the sewage bucket when the fuselage body is in the lying state can be appropriately raised. Moreover, since the sewage inlet pipe is arranged close to the front wall of the sewage bucket, the sewage inlet pipe is located at the top of the sewage bucket when the sewage bucket is in the lying state. By raising the sewage bucket and placing the sewage inlet pipe on the top, the climbing height of the sewage liquid flowing from the sewage suction port through the sewage inlet pipe into the sewage bucket when the sewage bucket is in the lying state is increased as much as possible, so that the sewage liquid can consume more kinetic energy in the climbing process, thereby adjusting the power of the sewage suction fan to a suitable size for generating suction force, ensuring that the power of the sewage suction fan can not only enable the sewage suction fan to start smoothly, but also enable the suction force generated by the sewage suction fan during cleaning to be suitable, thereby ensuring that the sewage liquid can be sucked into the sewage bucket and the movement distance of the sewage liquid after entering the sewage bucket The distance is appropriate, so that the dirty liquid can slowly fall into the sewage bucket and will not rush to the bucket cover or even the sewage suction fan in the body, ensuring that the sewage suction fan can start normally when it directly enters the lying flat cleaning work, and after starting, ensuring that the sewage suction fan performs suction work with stable performance and good power state, so as to ensure that the suction strength of the sewage suction fan is sufficient during the lying flat cleaning work, ensure the sewage suction efficiency, improve the suction effect when lying flat, and at the same time reduce the risk of dirty liquid following the sewage suction airflow into the sewage suction fan and polluting the sewage suction fan, thereby effectively avoiding the situation where the sewage suction fan is damaged by liquid inlet while ensuring the cleaning effect, which not only saves resources, but also reasonably utilizes and improves the working performance of the sewage suction fan, so that it is always in a better working state, can improve the use environment of the sewage suction fan and extend its service life.

[0019] The front wall of the sewage bucket is flush with the front surface of the front shell and constitutes part of the front surface of the fuselage. The matching relationship between the sewage bucket and the fuselage is reasonably set so that the front surface of the fuselage can remain flat when the sewage bucket is installed, so as to avoid the front wall of the sewage bucket protruding forward from the front surface of the fuselage, thereby avoiding the front wall of the sewage bucket being higher than the upper surface of the floor brush when in a flat state, so that the flat fuselage can drive the floor brush to smoothly enter the low space for effective cleaning when in a flat state. In addition, the flat fuselage and the setting that it is not higher than the floor brush also reduce the visual height of the fuselage, making it easier for users to observe the movement route of the floor brush and the environmental condition and dirtiness, so as to carry out targeted and efficient cleaning.

[0020] 2. The sewage suction port and the sewage inlet pipe are connected through a transfer pipe. The transfer pipe is set close to the front surface of the front shell. When the machine body is in a lying state, the transfer pipe is set higher than the machine body. The reasonable setting of the position of the transfer pipe relative to the front shell can appropriately increase the height that the sewage needs to climb when it flows from the sewage suction port through the transfer pipe to the sewage inlet pipe, further consume the kinetic energy of the sewage in the sewage inlet pipe and after entering the barrel body, ensure that the suction force of the sewage suction fan can effectively draw the sewage into the sewage barrel, and reduce the probability of the sewage rushing to the barrel cover or even entering the machine body when it flows into the sewage barrel through the sewage inlet pipe. At the same time, it can also increase the power of the sewage suction fan when starting when directly lying flat for cleaning, so that the sewage suction fan can start normally, and after starting, ensure that the sewage suction fan performs suction work in a stable performance and good power range state, ensure the sewage suction efficiency, and improve the suction effect when lying flat.

[0021] 3. The sewage bucket is preferably set to a flat shape with a front-to-back thickness smaller than the left-to-right width. The shape of the sewage bucket is reasonably set to ensure the sewage suction capacity of the sewage bucket on the one hand, and to avoid increasing the front-to-back thickness of the fuselage when the sewage bucket is set on the fuselage on the other hand. Furthermore, since the sewage bucket is flat, when the sewage bucket is in a flat state with the fuselage, the center of gravity of the sewage bucket is low, which can ensure the structural stability of the sewage bucket, and the liquid level of the sewage in the sewage bucket is also low, which can appropriately reduce the shaking amplitude of the sewage in the sewage bucket when the user pushes and pulls the fuselage forward and backward, thereby avoiding the situation where the shaking sewage follows the sewage suction airflow into the fan.

[0022] 4. The surface cleaning device includes a power source assembly, which includes a battery pack and a fan. The battery pack is divided into two parts and is respectively arranged on the left and right sides of the fan. The distribution orientation of the battery pack relative to the fan is reasonably arranged so that the power source assembly also presents a flat structure with a front-to-back thickness less than the left-to-right width, so that the power source assembly can be smoothly installed in the flat fuselage. Since the power source assembly is a flat structure, when the fuselage is in a flat state, the center of gravity of the power source assembly is low, and since the central axis plane of the power source assembly coincides with the central axis plane of the fuselage, that is, the power source assembly is centered relative to the fuselage in the left-right direction, it helps to improve the left-right balance of the fuselage when the user is using it.

[0023] 5. The upper part of the front shell is concave forward to form a second installation cavity with an open rear side, and the power source assembly is arranged in the second installation cavity. In this structure, the power source assembly is arranged inside the fuselage, and the second installation cavity with an open rear side can be completely covered by the rear shell, so that the front and rear sides of the fuselage maintain their intact appearance.

[0024] 6. The power source assembly also includes a housing and a control module. The fan, battery pack and control module are arranged in the housing. The power source assembly forms a relatively independent structure. The upper part of the front shell is concave backward to form a second installation cavity with an open front side. The power source assembly is detachably arranged in the second installation cavity. When the power source assembly is arranged in the second installation cavity, the front surface of the power source assembly is flush with the front surface of the front shell, and the front surface of the power source assembly constitutes part of the front surface of the fuselage. When the fuselage is in a flat state, the front surface of the power source assembly will not be higher than the upper surface of the floor brush, thereby avoiding the power source assembly from hindering the fuselage from driving the floor brush into a low space for cleaning.

[0025] 7. The power source assembly is provided with a handle, and the handle is provided with two symmetrical split parts, which are rotatably connected to the outer shell. The two split parts rotated together towards each other form a handle protruding from the outer shell, and the user can apply force to the power source assembly through the handle to install or remove the power source assembly from the fuselage. The two split parts rotated away from each other fit into the outer shell or are embedded in the groove of the outer shell, so as to avoid the split part of the handle protruding from the surface of the outer shell and causing the height of the fuselage in a flat state to increase, thereby avoiding the power source assembly from hindering the fuselage from driving the floor brush to enter a low space for cleaning.

[0026] 8. A concave cavity is set in the front wall of the sewage bucket, and the sewage inlet pipe is set in the concave cavity and is not higher than the front wall of the sewage bucket. Alternatively, the sewage inlet pipe is set in the sewage bucket and is set close to the front wall of the sewage bucket. The position of the sewage inlet pipe relative to the sewage bucket is reasonably set so that the sewage inlet pipe can be set as far forward as possible relative to the sewage bucket, so that the sewage inlet pipe can be set as far up as possible when the sewage bucket is in a flat state.

[0027] 9. A rotatable handle is provided on the front wall of the sewage bucket. The handle in the holding state protrudes from the front wall of the sewage bucket. The user can apply force to the sewage bucket through the handle to install or remove the sewage bucket from the machine body. The handle in the relaxed state fits the front wall of the sewage bucket or is embedded in the groove of the front wall of the sewage bucket to prevent the handle from protruding from the front wall of the sewage bucket, thereby preventing the handle from protruding from the front surface of the machine body and preventing the protruding handle from increasing the height of the machine body in the lying state. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of a surface cleaning device according to Embodiment 1;

[0029] Figure 2It is a schematic diagram of the surface cleaning device of Example 1 when the body is in a tilted state;

[0030] Figure 3 Schematic diagram of the surface cleaning device of Example 1 when the body is in a flat state Figure 1 ;

[0031] Figure 4 Schematic diagram of the surface cleaning device of Example 1 when the body is in a flat state Figure 2 ;

[0032] Figure 5 is a cross-sectional view of a body of the surface cleaning device of Example 1 along the left-right direction;

[0033] Figure 6 It is a cross-sectional view of the front shell along the central axis of the surface cleaning device in Example 1;

[0034] Figure 7 It is a structural diagram of a floor brush in a surface cleaning device of Example 1;

[0035] Figure 8 is a schematic diagram of a liquid supply assembly in a surface cleaning device according to Embodiment 1;

[0036] Fig. 9 is a schematic diagram of a surface cleaning device according to Embodiment 2;

[0037] Fig.10 It is a schematic diagram of the surface cleaning device of the second embodiment in a flat state when the power source assembly is not installed on the body;

[0038] Fig.11 It is a schematic diagram of the surface cleaning device of Example 2 in a lying state when the power source assembly is installed on the body;

[0039] Fig.12 is a cross-sectional view of a power source assembly in a surface cleaning device of Embodiment 2;

[0040] Fig.13 It is a schematic diagram of a sewage bucket in the surface cleaning device of Example 3;

[0041] Fig.14 Schematic diagram of a sewage bucket in the surface cleaning device of Example 4.

[0042] In the figure, 100-power source assembly, 110-fan, 120-battery pack, 130-control module, 140-housing, 150-handle,

[0043] 200-sewage bucket, 210-sewage inlet pipe, 220-barrel body, 230-barrel cover, 240-recessed cavity, 250-handle,

[0044] 300-body, 310-front shell, 311-first installation cavity, 312-second installation cavity, 313-partition, 314-ventilation hole, 315-exhaust hole, 320-rear shell, 330-transfer tube, 340-air inlet channel, 350-handle,

[0045] 400- floor brush, 410- sewage suction port, 420- floor brush body, 430- front cover, 440- accommodating chamber, 450- cleaning part, 460- scraping part,

[0046] 500-liquid supply assembly, 510-water box, 520-water pump, 530-water distribution component. DETAILED DESCRIPTION

[0047] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following words indicating orientation or positional relationship such as "upper", "lower", "left", "right", "longitudinal", "lateral", "inner", "outer", "vertical", "horizontal", "top", "bottom", etc. are only based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0048] Embodiment 1

[0049] Combination Figures 1 to 8 The first embodiment of the utility model provides a surface cleaning device that can be laid flat for cleaning, including a body 300 provided with a fan 110 and a sewage bucket 200, a floor brush 400 pivotally connected to the lower end of the body 300, and a liquid supply assembly 500 for providing cleaning liquid. The floor brush 400 is provided with a sewage suction port 410, and the sewage bucket 200 is provided with a sewage inlet pipe 210 connected to the sewage suction port 410. The sewage bucket 200 follows the body 300 to have an inclined state and a lying flat state. The body 300 is flat in shape with a front-to-back thickness T1 smaller than the left-to-right width W1. The body 300 includes a front shell 310 and a rear shell 320 that are buckled together. The lower part of the front shell 310 is concave backward to form a first installation cavity 311 with an open front side. The sewage bucket 200 is arranged in the first installation cavity 311. The sewage inlet pipe 210 is arranged close to the front wall of the sewage bucket 200. The front wall S1 of the sewage bucket 200 is flush with the front surface S2 of the front shell 310 and constitutes a partial front surface S3 of the body 300. The front surface S3 of the body 300 is not higher than the upper surface of the floor brush 400 when the body 300 is in a lying state.

[0050] The shape of the body 300 is reasonably set so as to reasonably reduce the height of the body 300 relative to the surface to be cleaned when the body 300 is in a flat state. When the body 300 is in a flat state, the front surface S3 of the body 300 is not higher than the upper surface of the floor brush 400, so that the body 300 can drive the floor brush 400 to smoothly enter the low space for effective cleaning, avoiding the situation that the distance that the body 300 drives the floor brush 400 to enter the low space is limited due to the front surface S3 of the body 300 being higher than the upper surface of the floor brush 400 when the body 300 is in a flat state, resulting in ineffective cleaning. The sewage bucket 200 is arranged at the first installation cavity 311, that is, the sewage bucket 200 is arranged at the front side of the body 300. When the sewage bucket 200 is in a lying state following the fuselage 300, the sewage bucket 200 is located at the upper part of the fuselage 300, and the height of the sewage bucket 200 when the fuselage 300 is in the lying state can be appropriately raised. Moreover, since the sewage inlet pipe 210 is arranged close to the front wall of the sewage bucket 200, the sewage inlet pipe 210 is located at the top of the sewage bucket 200 when the sewage bucket 200 is in the lying state. By raising the sewage bucket 200 and placing the sewage inlet pipe 210 on the top, the climbing height of the sewage liquid flowing from the sewage suction port 410 through the sewage inlet pipe 210 into the sewage bucket 200 when the sewage bucket 200 is in the lying state is increased as much as possible, so that the sewage liquid can consume more kinetic energy during the climbing process, thereby reducing the distance the sewage liquid moves backward when entering the sewage bucket 200, so as to ensure the suction strength of the fan 110 while avoiding the situation where the sewage liquid moving backward follows the sewage suction airflow into the fan 110, thereby effectively avoiding the damage to the fan 110 while ensuring the cleaning effect.

[0051] Combination Figure 1 , Figure 7In this embodiment, the floor brush 400 includes a floor brush body 420 and a front cover 430. The lower end of the body 300 is pivotally connected to the rear side of the floor brush body 420 through a pivot joint so that the body 300 can rotate up and down relative to the floor brush 400. The front cover 430 is detachably mounted on the front side of the floor brush body 420 through a locking structure. When the front cover 430 is mounted on the front side of the floor brush body 420, the two enclose a receiving cavity 440. The sewage suction port 410 is arranged on the floor brush body 420 in the center. The sewage suction port 410 is located behind the receiving cavity 440 and is connected to the receiving cavity 440. The floor brush 400 is provided with a cleaning member 450 detachably mounted at the receiving cavity 440. A motor for driving the cleaning member 450 to rotate is arranged inside the floor brush 400. The rotating cleaning member 450 wipes the surface to be cleaned. The front side of the floor brush body 420 is provided with a scraping member 460 for scraping the cleaning member 450. The scraping member 460 is arranged above the dirt suction port 410 and is arranged parallel to the cleaning member 450. The dirt scraped and squeezed out of the cleaning member 450 by the scraping member 460 can be sucked away through the dirt suction port 410. The cleaning member 450 can adopt an existing single roller brush structure or a double roller brush structure or a crawler mop structure, which is not too much limited in this embodiment. The scraping member 460 can only adopt a scraping bar or comb teeth, or a structure combining a scraping bar and comb teeth.

[0052] In this embodiment, the sewage bucket 200 is also flat with a front-to-back thickness T2 less than the left-to-right width W2, which ensures the sewage suction capacity of the sewage bucket 200 on one hand, and avoids increasing the front-to-back thickness T1 of the body 300 when the sewage bucket 200 is arranged on the body 300 on the other hand. The sewage bucket 200 includes a barrel body 220 and a barrel cover 230. The sewage inlet pipe 210 is arranged in the barrel body 220 and close to the front wall of the barrel body 220, so that the sewage inlet pipe 210 is arranged as far forward as possible relative to the sewage bucket 200, so that the sewage inlet pipe 210 is arranged as far upward as possible when the sewage bucket 200 is in a flat state. The sewage inlet pipe 210 extends from the bottom wall of the barrel body 220 toward the barrel cover 230, and both ends of the sewage inlet pipe 210 are opened. The lower end of the sewage inlet pipe 210 is connected to the sewage suction port 410 through the transfer pipe 330, and the upper end of the sewage inlet pipe 210 is connected to the inner cavity of the sewage bucket 200. In order to facilitate the user to hold or apply force to the sewage bucket 200, a handle or a handle recess is provided on the front wall of the barrel body 220. Other structures of the sewage bucket 200 can refer to the prior art, such as the air duct structure and the filter structure provided on the barrel cover 230, the dirt baffle plate and the liquid level sensing electrode provided in the sewage bucket 200, etc., which will not be described in detail here. As a feasible solution of this embodiment, the sewage inlet pipe 210 and the front wall of the barrel body 210 can be arranged in close contact, or they can be arranged in the air with a small gap left.

[0053] Combination Figure 4In this embodiment, the transfer tube 330 is arranged in the lower end of the fuselage 300, one end of the transfer tube 330 is connected to the sewage suction port 410 through a hose, and the other end of the transfer tube 330 extends to the bottom side of the first installation cavity 311. When the sewage bucket 200 is arranged at the first installation cavity 311, the bottom end of the sewage inlet pipe 210 is docked with the transfer tube 330, so that the sewage inlet pipe 210 is connected with the sewage suction port 410. In order to appropriately increase the height that the sewage needs to climb when flowing from the sewage suction port 410 to the sewage suction pipe through the transfer tube 330, the transfer tube 330 is arranged as close to the front surface of the front shell 310 as possible, so that the transfer tube 330 is arranged as close to the fuselage 300 as possible when the fuselage 300 is in a flat state. Specifically, the transfer tube 330 can be fixed to the lower end of the front shell 310 by a fastener, so that the transfer tube 330 is arranged close to the front surface S2 of the front shell 310.

[0054] Combination Figure 6 In this embodiment, the sewage bucket 200 is detachably arranged at the first installation cavity 311 by half-enclosing on the left and right sides or fully enclosing on the left and right sides. Specifically, the height H1 of the cavity walls on the left and right sides of the first installation cavity 311 is less than or equal to the thickness T2 of the sewage bucket 200, and the distance H2 between the bottom wall of the first installation cavity 311 and the front surface S2 of the front shell 310 is greater than or equal to the thickness T2 of the sewage bucket 200. When the sewage bucket 200 is arranged at the first installation cavity 311, the cavity walls on the left and right sides of the first installation cavity 311 are lower than or flush with the front wall S1 of the sewage bucket 200, and the front wall S1 of the sewage bucket 200 is lower than or flush with the cavity walls on the upper and lower sides of the first installation cavity 311, so that the sewage bucket 200 does not protrude from the front surface S3 of the fuselage 300. Preferably, H2 is equal to T2. When the sewage bucket 200 is placed in the first installation cavity 311, the front wall S1 of the sewage bucket 200 is flush with the upper and lower walls of the first installation cavity 311, so that the front wall S1 of the sewage bucket 200 is flush with the front surface S2 of the front shell 310. Of course, H2 can also be slightly larger than T2.

[0055] Combination Figure 5 In this embodiment, the surface cleaning device further includes a power source assembly 100, which includes a battery pack 120, a control module 130 and the above-mentioned fan 110. The power source assembly 100 constitutes a module and is arranged inside the fuselage 300. Specifically, the upper part of the front shell 310 is concave forward to form a second installation cavity 312 with an open rear side. The power source assembly 100 is arranged in the second installation cavity 312, and the rear side of the second installation cavity 312 is covered by the rear shell 320, so that the power source assembly 100 is located in a relatively closed cavity.

[0056] In order to appropriately reduce the thickness of the power source assembly 100, in this embodiment, the battery pack 120 adopts a split structure, and the battery pack 120 has two independent parts. The two parts of the battery pack 120 are respectively arranged on the left and right sides of the fan 110, so that the power source assembly 100 also presents a flat structure with a front-to-back thickness less than the left-to-right width, so that the power source assembly 100 can be smoothly installed in the flat fuselage 300. Further, the central axis plane of the power source assembly 100 in the left-to-right direction coincides with the central axis plane of the fuselage 300 in the left-to-right direction, that is, the power source assembly 100 is arranged in the fuselage 300 in the middle of the left and right, which helps to improve the left-right balance of the fuselage 300 when the user uses it. The control module 130 is arranged on the top of the battery pack 120 and the fan 110. The control module 130 is roughly a plate-shaped structure and is arranged perpendicular to the axial direction of the fan 110. The arrangement of the control module 130 is reasonably set, so as to reasonably reduce the height of the power source assembly 100 in the up and down direction, and then reasonably control the overall height of the fuselage 300.

[0057] Combination Figure 6 In this embodiment, a partition 313 for separating the first installation cavity 311 and the second installation cavity 312 is provided in the middle part of the front shell 310. The partition 313 is inclined relative to the height direction of the front shell 310. A ventilation hole 314 is provided on the partition 313. An air inlet channel 340 is provided in the second installation cavity 312. The air inlet channel 340 is limited in the second installation cavity 312 by the rear shell 320. The lower end of the air inlet channel 340 is connected to the ventilation hole 314, and the upper end of the air inlet channel 340 is connected to the air inlet end of the fan 110. The sewage bucket 200 and the fan 110 are connected through the ventilation hole 314 and the air inlet channel 340. The sewage suction airflow formed by the suction force provided by the fan 110 flows through the sewage bucket 200 and flows to the fan 110 through the ventilation hole 314 and the air inlet channel 340. The airflow flowing through the fan 110 is finally discharged from the fuselage 300 from the exhaust holes 315 on the left and right side walls of the first installation cavity 311. The flow channel structure for air flow inside the fuselage 300 can refer to the prior art such as CN218186671U, and will not be repeated here.

[0058] In this embodiment, a handle 350 is provided at the top of the body 300, and the user can push and pull the body 300 through the handle 350 when in use. The front shell 310 and the rear shell 320 are buckled together by a buckle structure and locked by screws. The buckled front shell 310 and the rear shell 320 cooperate to form an interlayer cavity located at the rear side of the first installation cavity 311, and the interlayer cavity can be used for wiring. The battery pack 120 not only supplies power to the electrical components in the body 300, but also to the electrical components in the floor brush 400. The electrical components on the body 300 and the floor brush 400 are all controlled by or electrically connected to the control module 130.

[0059] Combination Figure 8In this embodiment, the liquid supply assembly 500 includes a water box 510, a water pump 520 and a water diverter 530 arranged in sequence from upstream to downstream. The water pump 520 pumps the liquid in the water box 510 to the water diverter 530, and the liquid flowing into the water diverter 530 is sprayed from the water outlet on the water diverter 530 to the cleaning member 450 and / or the surface to be cleaned. In order to keep the body 300 flat, in this embodiment, the water box 510 is arranged on the floor brush 400. Specifically, the water box 510 is arranged at the bottom of the front cover 430 so that the water box 510 can be detachably arranged on the floor brush 400, which is convenient for the user to add liquid to the water box 510. The water diverter 530 is arranged above the scraper 460. The water diverter 530 can be arranged on the front side of the floor brush body 420, or on the bottom of the front cover 430. The water diverter 530 can adopt the prior art method of connecting a water inlet channel according to 2 N (N is a natural number) to divide the liquid into multiple water outlets. Of course, other components such as spray heads or nozzles that meet the liquid supply requirements can also be used to replace the water distribution member 530. As an improved solution of this embodiment, the liquid supply component 500 can be provided with a heating element upstream of the water distribution member 530, and the heating element is used to heat the liquid flowing through, and the heated liquid is sprayed out from the water distribution member.

[0060] In this embodiment, the front surface S3 of the body 300 is basically formed by the front surface S2 of the front shell 310 and the front wall S1 of the sewage bucket 200, and the rear surface S4 of the body 300 is basically completely formed by the rear surface of the rear shell 320. The front surface S3 of the body 300 and the rear surface S4 of the body 300 are both roughly planar structures and are roughly parallel to each other. The upper surface of the floor brush 400 is not a complete plane. The floor brush 400 has the highest point E relative to the surface to be cleaned. When the body 300 is in a flat state, the front surface S3 of the body 300 is slightly lower than or flush with the horizontal plane P where the point E is located, so that the front surface S3 of the body 300 is not higher than the upper surface of the floor brush 400 when the body 300 is in a flat state. Specifically, the height of the front surface S3 of the body 300 relative to the surface to be cleaned can be set to a reasonable size such as 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, etc.

[0061] The surface cleaning device has a placement state, in which the body 300 is tilted forward relative to the vertical direction so that the center of gravity of the body 300 falls within the range of the floor brush 400, so that the body 300 can remain stationary relative to the floor brush 400.

[0062] Combination Figure 2The body 300 is in a tilted state during normal use. At this time, the body 300 is tilted backward at a certain angle relative to the vertical direction, and the angle α between the body 300 and the surface to be cleaned is about 60° to 85°. The user can push and pull the body 300 forward and backward through the handle 350, and the body 300 drives the floor brush 400 to move forward and backward on the surface to be cleaned.

[0063] Combination Figure 3 When it is necessary to clean the surface to be cleaned in a low space such as under a bed, under a sofa, or under a cabinet, the body 300 is rotated backward to a lying state. At this time, the body 300 lies down to be roughly parallel to the surface to be cleaned, and the front surface S3 of the body 300 is lower than the upper surface of the floor brush 400. The height of the body 300 relative to the surface to be cleaned is not higher than the height of the floor brush 400, so that the body 300 can drive the floor brush 400 to extend into the low space for effective cleaning.

[0064] In order to facilitate users to push and pull the flat body 300, rollers can be set on the rear side of the body 300. When the body 300 is in a flat state, the rollers are in contact with the surface to be cleaned. The rollers are used to support the body 300, which greatly reduces the gripping force that the user needs to apply to the body 300, and also facilitates the body 300 to move back and forth under the push and pull of the user.

[0065] Embodiment 2

[0066] Combination Fig. 9 , Fig.10 , Fig.11 In this embodiment, the power source assembly 100 is detachably mounted on the fuselage 300 as an independent module. The power source assembly 100 detached from the fuselage 300 can be connected with accessories to realize functions such as dry vacuuming.

[0067] Specifically, the upper part of the front shell 310 is concave backward to form a second installation cavity 312 with an open front side, and the power source assembly 100 is detachably arranged at the second installation cavity 312. The power source assembly 100 can be detachably arranged at the second installation cavity 312 in a manner of half-enclosing on the left and right sides or fully enclosing on the left and right sides. When the power source assembly 100 is arranged at the second installation cavity 312, the front surface S5 of the power source assembly 100 is roughly flush with the front surface S2 of the front shell 310, and the front surface S3 of the body 300 is roughly composed of the front surface S2 of the front shell 310, the front wall S1 of the sewage bucket 200 and the front surface S5 of the power source assembly 100. When the body 300 is in a lying state, the front surface S3 of the body 300 is lower than or flush with the horizontal plane P where the highest point E of the floor brush 400 is located. Specifically, when the body 300 is in a lying state, the height of the front surface S3 of the body 300 from the ground relative to the surface to be cleaned can be set to a reasonable size such as 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, etc.

[0068] In order to reasonably control the overall front-to-back thickness of the fuselage 300, in this embodiment, the power source assembly 100 is also flat with a front-to-back thickness T3 less than the left-right width W3. The power source assembly 100 includes a fan 110, a battery pack 120, a control module 130 and a housing 140. The fan 110, the battery pack 120 and the control module 130 are arranged in the housing 140. The fan 110 is arranged in the center of the housing 140. The battery pack 120 is divided and has two parts. The two parts of the battery pack 120 are respectively arranged on the left and right sides of the fan 110. The control module 130 is arranged on the top of the battery pack 120. The control module 130 is plate-shaped and is substantially perpendicular to the axial direction of the fan 110.

[0069] In order to facilitate the user to hold the power source assembly 100, the power source assembly 100 is provided with a handle 150, and the handle 150 includes two split parts that are symmetrically arranged and rotatably connected to the front wall of the shell 140. The two split parts that rotate toward each other and close together form a handle 150 protruding from the shell 140, and the two split parts that rotate away from each other and separate are attached to the front wall of the shell 140. Avoid the split part of the handle 150 protruding from the shell 140, which will increase the height of the body 300 in a flat state, thereby avoiding the power source assembly 100 from causing obstacles to the body 300 when driving the floor brush 400 to enter a low space for cleaning. As an alternative to this embodiment, a concave shallow groove can also be set on the front wall of the shell 140, and the two split parts separated from each other can be embedded in the groove on the front wall of the shell 140, so that the split part will not protrude from the front surface S5 of the power source assembly 100.

[0070] The other structures of the second embodiment are the same as those of the first embodiment and will not be described in detail here.

[0071] Embodiment 3

[0072] Combination Fig.13 In this embodiment, the front wall of the barrel body 220 is provided with a concave cavity 240 that is concave backwards, and the sewage inlet pipe 210 is arranged in the concave cavity 240 and is not higher than the front wall S1 of the sewage bucket 200. The upper end of the sewage inlet pipe 210 extends from the top side wall of the concave cavity 240 into the barrel body 220 and is arranged toward the rear wall of the barrel body 220. Specifically, the sewage inlet pipe 210 can be arranged flush with the front wall S1 of the sewage bucket 200, or slightly lower than the front wall S1 of the sewage bucket 200. The concave cavity 240 allows the sewage inlet pipe 210 to be arranged as far forward as possible relative to the sewage bucket 200, so that the sewage inlet pipe 210 is arranged as far upward as possible when the sewage bucket 200 is in a flat state.

[0073] In this embodiment, the power source assembly 100 may be disposed inside the fuselage 300 , or may be detachably disposed on the fuselage 300 .

[0074] As an alternative to this embodiment, the upper end of the sewage inlet pipe 210 may also be arranged toward the barrel cover 230.

[0075] The other structures of the third embodiment are the same as those of the first embodiment and will not be described in detail here.

[0076] Embodiment 4

[0077] Combination Fig.14 In this embodiment, a rotatable buckle 250 is provided on the front wall of the barrel body 220. The buckle 250 has a holding state and a relaxed state. The buckle 250 in the holding state protrudes from the front wall of the sewage bucket 200, and the buckle 250 in the relaxed state is embedded in the groove of the front wall of the barrel body 220. Further, the buckle 250 includes two parts that are symmetrically arranged on the left and right. When the two parts of the buckle 250 rotate toward each other and close together, they are in the holding state. The user can hold or apply force to the sewage bucket 200 through the buckle 250. When the two parts of the buckle 250 rotate back to back to the relaxed state, the two parts of the buckle 250 are embedded in the groove on the front wall of the barrel body 220, so that the buckle 250 does not protrude from the front wall S1 of the sewage bucket 200.

[0078] In this embodiment, the power source assembly 100 may be disposed inside the fuselage 300 , or may be detachably disposed on the fuselage 300 .

[0079] In this embodiment, the sewage inlet pipe 210 can be arranged in the barrel body 220 and close to the front wall of the barrel body 220 , or the sewage inlet pipe 210 can be arranged in a concave cavity formed in the front wall of the barrel body 220 .

[0080] In this embodiment, the two parts of the buckle handle 250 can also be arranged to fit against the front wall of the barrel body 220 when in a relaxed state.

[0081] The other structures of the fourth embodiment are the same as those of the first embodiment and will not be described again here.

[0082] 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 deviate from the spirit of the present invention, they should all fall within the scope defined in the claims of the present invention.

Claims

1. A surface cleaning device capable of lying flat for cleaning, comprising a body provided with a fan and a sewage bucket, a floor brush pivotally connected to the lower end of the body, and a liquid supply assembly for providing cleaning liquid, the floor brush being provided with a sewage suction port, the sewage bucket being provided with a sewage inlet pipe connected to the sewage suction port, the sewage bucket being able to follow the body to have an inclined state and a lying flat state, characterized in that: The fuselage is flat in shape with a front-to-back thickness smaller than the left-to-right width. The fuselage includes a front shell and a rear shell that are buckled together. The lower part of the front shell is concave backward to form a first installation cavity with an open front side. The sewage bucket is arranged in the first installation cavity. The sewage inlet pipe is arranged close to the front wall of the sewage bucket. The front wall of the sewage bucket is flush with the front surface of the front shell and constitutes part of the front surface of the fuselage. The front surface of the fuselage is not higher than the upper surface of the floor brush when the fuselage is in a lying flat state.

2. A surface cleaning device capable of lying flat for cleaning according to claim 1, characterized in that: The lower end of the fuselage is provided with a transfer pipe for connecting the sewage suction port and the sewage inlet pipe. The transfer pipe is arranged close to the front surface of the front shell so that the transfer pipe is arranged upward when the fuselage is in a lying state.

3. A surface cleaning device capable of lying flat for cleaning according to claim 1, characterized in that: The sewage bucket is flat with a front-to-back thickness smaller than the left-to-right width. The left and right walls of the first installation cavity are not higher than the front wall of the sewage bucket, and the front wall of the sewage bucket is not higher than the upper and lower walls of the first installation cavity.

4. A surface cleaning device capable of lying flat for cleaning according to claim 1, characterized in that: The surface cleaning device also includes a power source assembly, which includes a battery pack and the fan. The battery pack has two parts and is respectively arranged on the left and right sides of the fan. The central axis surface of the power source assembly coincides with the central axis surface of the fuselage.

5. A surface cleaning device capable of lying flat for cleaning according to claim 4, characterized in that: The upper portion of the front shell is concave forward to form a second installation cavity with an open rear side. The power source assembly is arranged in the second installation cavity, and the power source assembly includes a control module arranged above the battery pack.

6. A surface cleaning device capable of lying flat for cleaning according to claim 4, characterized in that: The power source assembly includes a shell and a control module. The fan, battery pack and control module are arranged in the shell. The upper part of the front shell is concave backward to form a second installation cavity with an open front side. The power source assembly is detachably arranged in the second installation cavity. The front surface of the power source assembly arranged in the second installation cavity is flush with the front surface of the front shell and constitutes a partial front surface of the fuselage.

7. A surface cleaning device capable of lying flat for cleaning according to claim 6, characterized in that: The power source assembly is provided with a handle, which includes two symmetrically arranged split parts rotatably connected to the shell, the two split parts rotated toward each other and closed to form a handle protruding from the shell, and the two split parts rotated away from each other to fit the shell or embedded in the groove of the shell.

8. The surface cleaning device capable of lying flat for cleaning according to claim 1, characterized in that: The front wall of the sewage bucket is provided with a concave cavity which is concave backwards, the sewage inlet pipe is arranged in the concave cavity and is not higher than the front wall of the sewage bucket, and the upper end of the sewage inlet pipe extends into the sewage bucket and is arranged toward the rear wall of the sewage bucket; or, the sewage inlet pipe is arranged in the sewage bucket and is arranged close to the front wall of the sewage bucket.

9. The surface cleaning device capable of lying flat for cleaning according to claim 1, characterized in that: The front wall of the sewage bucket is provided with a rotatable buckle handle, which has a holding state and a relaxed state. The buckle handle in the holding state protrudes from the front wall of the sewage bucket, and the buckle handle in the relaxed state fits the front wall of the sewage bucket or is embedded in a groove on the front wall of the sewage bucket.

10. A surface cleaning device capable of lying flat for cleaning according to claim 5 or 6, characterized in that: An air inlet passage for connecting the sewage bucket and the fan is provided between the first installation cavity and the second installation cavity.

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