Surface cleaning device capable of achieving lying cleaning

Abstract

The utility model discloses a surface cleaning device capable of lying for cleaning, which belongs to the technical field of cleaning equipment and comprises a machine body, a ground brush, a liquid supply component and a dirt suction component, the upper end of the machine body is connected with a holding handle, the lower end of the machine body is pivotally connected with the ground brush, the liquid supply component comprises a water purifying tank and a water distributing piece, and the dirt suction component comprises a sewage bucket and a fan. A vertical rod is arranged at the upper end of the machine body, the holding handle comprises a fixed connecting part and a holding part, the machine body has an upright state and a lying state relative to the ground brush, and at least part of the vertical projection of the holding part forwards exceeds the ground brush or the front edge of the vertical projection is aligned with the front edge of the ground brush when the machine body is in the upright state. When the machine body is in a lying state, the front surface is not higher than the highest position of the upper surface of the floor brush. And the forward extending distance of the holding part relative to the machine body is reasonably set, so that the holding part has a certain height relative to the to-be-cleaned surface when the machine body is in a lying state, and the operation comfort of a user during lying cleaning is improved.

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 down for cleaning. Background Art

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

[0003] In order to enable surface cleaners to clean low spaces such as under beds, sofas, and cabinets, some existing surface cleaners have a body that can be rotated backward at a large angle relative to the floor brush to a lying position, so that the user can use the lying body to drive the floor brush into the low space for cleaning. Since the power source component is generally arranged on the body, the power line needs to pass through the body so that the battery pack can supply power to the electrical components in the floor brush, and the clean water tank of the liquid supply component and the sewage bucket of the sewage suction component are detachably mounted on the body, the body of existing handheld surface cleaners is generally configured as a cylinder or an elliptical cylinder, and the front and rear thickness of the body is relatively large. As a result, the height of the body is relatively large relative to the surface to be cleaned when lying down. The body in the lying position still cannot smoothly enter the low space, resulting in the floor brush extending into the low space when the body is lying down. This is not conducive to ensuring the cleaning effect on the surface to be cleaned in the low space.

[0004] In addition, in order to facilitate the user to hold the machine body for cleaning, a handle is provided on the top of the machine body. In existing surface cleaning machines, the handle generally protrudes backward. When the machine body is in a lying position, the handle protruding backward makes it impossible for the machine body to lie backward to a state parallel to the surface to be cleaned, so that the height of the machine body relative to the surface to be cleaned is relatively large when lying down. As a result, the distance that the floor brush driven by the machine body can extend into the low space is still limited. Even if the front and rear thickness of the machine body is reduced, this problem cannot be well solved. 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 be laid down for cleaning. The distance at which the gripping portion extends forward relative to the body is reasonably set, so that the gripping portion is at a certain height relative to the surface to be cleaned when the body is in a lying state, thereby improving the operating comfort of the user when lying down for cleaning.

[0006] The cleaning brush is adapted to move the cleaning element towards the bottom of the cleaning surface, and the cleaning element is adapted to move the cleaning element towards the bottom of the cleaning surface.

[0007] Preferably, when the body is in an upright state, the vertical projection of the gripping portion extends forward relative to the front edge of the floor brush by a distance L, where L is ≥ 4 cm.

[0008] Preferably, at least a portion of the gripping portion is higher than the body in the lying state.

[0009] Preferably, the vertical pole is fixed to the upper end of the fuselage, and the vertical pole is parallel to the fuselage; or, the lower end of the vertical pole is rotatably connected to the upper end of the fuselage, and the vertical pole is upward relative to the fuselage when the fuselage is in a lying state.

[0010] Preferably, the gripping portion includes an upper frame for providing a gripping position, and the upper frame extends obliquely downward from rear to front when the body is in an upright state.

[0011] Preferably, the extension direction of the upper frame has an inclination angle γ relative to the length direction of the vertical pole, and the angle is 50°≤γ≤60°.

[0012] Preferably, the holding portion is in the shape of a hollow frame and includes a rear frame, a front frame and a lower frame. The rear frame is connected to the fixing portion and the center lines of the two coincide. The front frame extends downward and backward from the front end of the upper frame. The two ends of the lower frame are respectively connected to the lower end of the front frame and the lower end of the rear frame. A button operation module is provided at the front of the upper frame and / or the upper part of the front frame.

[0013] Preferably, at least a portion of the gripping portion is located above the upright pole when the body is in the lying state, and the gripping handle has a height H1 relative to the surface to be cleaned when the body is in the lying state.

[0014] Preferably, auxiliary wheels are provided on the rear side of the body, and the auxiliary wheels support the body in a lying state. When the body is in the lying state, the rear surface of the body has a height H2 relative to the surface to be cleaned, and H2 ​

[0015] Preferably, the body is flat with a front-to-back thickness smaller than a left-to-right width, and the sewage bucket is also flat with a front-to-back thickness smaller than a left-to-right width; and / or, the clean water tank is arranged on the floor brush.

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

[0017] 1. The surface cleaning device provided by the present invention comprises a vertical pole disposed at the upper end of a body, and a gripping handle comprising a fixing portion and a gripping portion. The fixing portion cooperates with the vertical pole to mount the gripping portion on the vertical pole, and the gripping portion is gripped by a user so that the user can push and pull the body and drive the floor brush to move across the surface to be cleaned. When the body is in an upright position, at least a portion of the vertical projection of the gripping portion extends forwardly beyond the floor brush, or the front edge of the vertical projection of the gripping portion is aligned with the front edge of the floor brush. The position of the gripping portion relative to the floor brush when the body is in the upright position is appropriately set, thereby appropriately setting the distance that the gripping portion extends forward relative to the body, so that the gripping portion is at a certain height relative to the surface to be cleaned when the body is in a reclining position. This effectively reduces the depth or bending required by the user to squat or bend when the body is reclining to clean a surface to be cleaned in a low space, thereby reducing the difficulty of the user's operation when lying down to clean, improving the user's comfort when lying down, and facilitating an enhanced user experience. In addition, because the grip portion of the grip handle extends forward relative to the body, the user can save effort when pushing and pulling the body through the grip portion in normal use, which can also improve the user experience. When the body is in a lying position, the front surface of the body is not higher than the highest point of the upper surface of the floor brush, that is, the maximum height of the body relative to the surface to be cleaned is less than or equal to the maximum height of the floor brush relative to the surface to be cleaned, so that the body can smoothly drive the floor brush to extend into low spaces for cleaning, avoiding the situation where the upper surface of the body is higher than the highest point of the upper surface of the floor brush, making it impossible for the body to extend into low spaces, resulting in a limited cleaning range of the floor brush.

[0018] 2. When the machine is in the upright position, the vertical projection of the grip extends forward a certain distance relative to the front edge of the floor brush. The forward extension of the grip is appropriately set to ensure that the grip is at the same height relative to the surface to be cleaned when the machine is in the reclining position. This effectively reduces the depth or bending required when the user is crouching or bending over to clean low spaces, further reducing the difficulty of operation when the machine is reclining.

[0019] 3. When the body is in the lying state, at least part of the grip is higher than the body, so that at least part of the grip is at a certain height relative to the surface to be cleaned when the body is in the lying state, thereby reducing the depth to which the user needs to squat or the extent to which the user needs to bend when the body is lying down to clean the surface to be cleaned in a low space.

[0020] 4. The vertical rod can be fixed to the upper end of the body, and preferably arranged parallel to the body. The vertical rod can also be rotatably arranged on the body. When the body is in a lying position, the vertical rod can remain in an upward position relative to the body. The upward vertical rod further increases the height of the grip relative to the surface to be cleaned when the body is lying down, thereby further reducing the depth or bending required by the user to clean the surface to be cleaned in a low space when the body is lying down, further reducing the difficulty of operation for the user when the body is lying down.

[0021] 5. The gripping part includes an upper frame, which is provided for the user to hold effectively. The upper frame extends obliquely downward from the back to the front. Under normal use, the body is tilted backward at a certain angle relative to the floor brush. At this time, the upper frame is roughly horizontal, which meets the user's holding needs. The user can apply force to the gripping part through the upper frame and thereby push and pull the body, which is conducive to improving the user's operating experience.

[0022] 6. Reasonably set the inclination angle γ of the upper frame's extension direction relative to the length of the upright to improve the user's grip comfort during use. If γ is less than 50° or greater than 60°, the user's wrist will be tilted too far upward or too far downward when holding the upper frame to ensure normal operation of the device, which is not conducive to ensuring user grip comfort.

[0023] 7. The gripping portion is preferably configured as a hollow frame, which can improve the structural strength of the gripping portion. The rear frame of the gripping portion and the fixing portion are arranged so that their centers coincide with each other. On the one hand, this can ensure the connection strength between the gripping portion and the rear frame, and on the other hand, it can also reduce the structural difficulty of the connection between the gripping portion and the rear frame. The front frame extends downward and backward from the front end of the upper frame, and a key operation module is provided at the front of the upper frame and / or the upper part of the front frame. The extension direction of the front frame and the distribution position of the key operation module on the gripping portion are reasonably set, so that the user can effectively press the key operation module while holding the upper frame. The user can complete the holding action and the pressing action with one hand, which is conducive to improving the user's operating experience.

[0024] 8. When the body is in the lying position, at least a portion of the grip is located above the upright pole, so that the grip is at a certain height relative to the surface to be cleaned. This facilitates the user to apply force to the body through the grip when the body is in the lying position, causing the body to drive the brush to move, and avoids the user having to squat or bend down significantly to apply force to the body through the grip. When the body is in the lying position, the grip handle has a height H1 relative to the surface to be cleaned, that is, the grip handle is completely higher than the surface to be cleaned when the body is in the lying position. This prevents the grip handle from contacting the surface to be cleaned, preventing the body from lying completely flat, allowing the body to lie completely flat. At the same time, the height H1 can also be used to further increase the height of the grip relative to the surface to be cleaned, facilitating user operation through the grip.

[0025] 9. Auxiliary wheels are provided on the rear side of the body. When the body is completely flat, the auxiliary wheels contact the surface to be cleaned, providing support for the body. The user no longer needs to bear the weight of the body through the grip. Instead, the user only needs to apply a translational force to the body through the grip, which reduces the difficulty of operation. When the body is in the lying position, the rear surface of the body has a height H2 relative to the surface to be cleaned, where H2 is less than H1. This height H2 further increases the height of the grip relative to the surface to be cleaned, further reducing the difficulty of operation when the body is in the lying position and preventing the grip handle from contacting the surface to be cleaned.

[0026] 10. The body is preferably designed to be flat, with its front-to-back thickness less than its left-to-right width. This minimizes the height of the body relative to the surface being cleaned when it is in a reclining position, allowing it to smoothly drive the brush into low spaces for cleaning. The wastewater bucket is also preferably designed to be deformed, with its front-to-back thickness less than its left-to-right width. This not only ensures the wastewater bucket's collection capacity, but also facilitates the reasonable control of the front-to-back thickness of the body with the bucket installed, allowing the overall body to remain flat.

[0027] The clean water tank is preferably arranged on the floor brush, so that the fuselage does not need to be provided with a cavity structure for installing the clean water tank, which facilitates the reasonable reduction of the front and rear thickness of the fuselage. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is an overall structural diagram of the surface cleaning device of Example 1;

[0029] Figure 2 This is a structural diagram of the floor brush and connector in the surface cleaning device of Example 1;

[0030] Figure 3 This is a schematic structural diagram of a liquid supply assembly in a surface cleaning device according to Example 1;

[0031] Figure 4 This is a structural diagram of the surface cleaning device of Example 1 when the body is in an upright state;

[0032] Figure 5 This is a structural diagram of the surface cleaning device of Example 1 when the body is in a tilted state;

[0033] Figure 6 This is a structural diagram of the surface cleaning device of Example 1 when the body is in a lying state;

[0034] Figure 7 This is a structural diagram of the surface cleaning device of Example 1 when the body is completely flat;

[0035] Figure 8 This is a structural diagram of the surface cleaning device of Example 2 when the body is in an upright state;

[0036] Figure 9 This is a structural diagram of the surface cleaning device of Example 3 when the body is completely flat.

[0037] In the figure, 100-body, 110-pole, 120-button operation module, 130-training wheels,

[0038] 200- floor brush, 210- cleaning part, 220- sewage suction port, 230- floor brush body, 240- front cover, 250- receiving chamber, 260- scraping part,

[0039] 300-liquid supply assembly, 310-clean water tank, 320-water distribution component, 321-liquid outlet, 330-water pump, 340-heating component,

[0040] 400-sewage suction assembly, 410-sewage bucket, 420-fan,

[0041] 500-holding handle, 510-fixed connection part, 520-holding part, 521-upper frame, 522-rear frame, 523-front frame, 524-rear frame,

[0042] 600-connector,

[0043] 700-Control module. DETAILED DESCRIPTION

[0044] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the following terms indicating orientations or positional relationships, such as "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," and "bottom," are based solely on the orientations or positional relationships shown in the accompanying drawings and are intended solely for the purpose of facilitating and simplifying the description of the present invention. They do not indicate or imply that the device or element referred to must have a specific orientation or be constructed or operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0045] Example 1

[0046] Combine Figures 1 to 7, Embodiment 1 of the present invention provides a surface cleaning device that can be laid down for cleaning, comprising a body 100, a floor brush 200, a liquid supply assembly 300 and a sewage suction assembly 400, the upper end of the body 100 is connected to a gripping handle 500, the lower end of the body 100 is pivotally connected to the floor brush 200, the liquid supply assembly 300 comprises a clean water tank 310 and a water diverter 320 connected to the clean water tank 310, the water diverter 320 is arranged corresponding to the cleaning member 210 on the floor brush 200, the sewage suction assembly 400 comprises a sewage bucket 410 detachably mounted on the body 100 and a fan 420 arranged above the sewage bucket 410, the sewage bucket 410 mounted on the body 100 is connected to the sewage suction port 220 on the floor brush 200. The upper end of the body 100 is provided with a vertical pole 110 for mounting a gripping handle 500. The gripping handle 500 includes a fixing portion 510 cooperating with the vertical pole 110 and a gripping portion 520 provided above the fixing portion 510. The body 100 has an upright state and a lying state relative to the floor brush 200. When the body 100 is in the upright state, at least part of the vertical projection of the gripping portion 520 extends forward beyond the floor brush 200 or the front edge of the vertical projection is aligned with the front edge of the floor brush 200. When the body 100 is in the lying state, its front surface S1 is not higher than the highest point of the upper surface of the floor brush 200.

[0047] The position of the grip portion 520 relative to the floor brush 200 when the body 100 is in the upright position is appropriately set, thereby appropriately setting the distance that the grip portion 520 extends forward relative to the body 100. This allows the grip portion 520 to be at a certain height relative to the surface to be cleaned when the body 100 is in the lying position. This effectively reduces the depth or degree of bending required by the user when the body 100 is lying down to clean the surface to be cleaned in a low space, reduces the difficulty of the user's lying down cleaning operation, improves the user's comfort when lying down cleaning, and is conducive to improving the user's experience. In addition, because the grip portion 520 of the grip handle 500 extends forward relative to the body 100, the user can save more effort when pushing and pulling the body 100 through the grip portion 520 in normal use, which can also improve the user's experience. When the body 100 is in a lying state, the front surface S1 of the body 100 is not higher than the highest point of the upper surface of the floor brush 200, that is, the maximum height of the body 100 relative to the surface to be cleaned is less than or equal to the maximum height of the floor brush 200 relative to the surface to be cleaned, so that the body 100 can smoothly drive the floor brush 200 to extend into a low space for cleaning, avoiding the situation where the cleaning range of the floor brush 200 is limited due to the front surface of the body 100 being higher than the highest point of the upper surface of the floor brush 200 and the body 100 being unable to extend into the low space.

[0048] Combine Figure 1 、 Figure 2The floor brush 200 of this embodiment includes a floor brush body 230 and a front cover 240. The front cover 240 is detachably mounted on the front side of the floor brush body 230. When the front cover 240 is mounted on the front side of the floor brush body 230, the front cover 240 cooperates with the floor brush body 230 to form a receiving chamber 250. The cleaning member 210 is detachably mounted in the receiving chamber 250. The cleaning member 210 can adopt an existing single roller brush structure, a double roller brush structure, or a crawler mop structure, and no further restrictions are imposed here. The motor for driving the cleaning member 210 can be located in the floor brush body 230 or in the receiving chamber 250. The motor located in the receiving chamber 250 is accommodated in the cleaning member 210 when the cleaning member 210 is installed in the receiving chamber 250. The sewage suction port 220 is located on the floor brush body 230 in the center and is connected to the receiving chamber 250. The water diversion member 320 is located above the sewage suction port 220. A scraping member 260 for scraping the cleaning member 210 is provided between the water diverter 320 and the sewage suction port 220. That is, the water diverter 320, the scraping member 260, and the sewage suction port 220 are arranged in order from top to bottom. The scraping member 260 can be a single scraper, a single comb bar, or a combination of a scraper and comb bar. The water diverter 320 and the scraping member 260 can be located on the front side of the floor brush body 230 or on the bottom of the front cover 240. The lower end of the body 100 is pivotally connected to the rear side of the floor brush body 230 via a joint 600. The joint 600 is roughly T-shaped, and the body 100 can be rotated back and forth relative to the floor brush 200 through the joint 600.

[0049] In this embodiment, the vertical rod 110 is fixed to the upper end of the fuselage 100 in the middle of the left and right sides and is arranged forward relative to the rear surface S2 of the fuselage. The length direction of the vertical rod 110 is consistent with the length direction of the fuselage 100, that is, the vertical rod 110 is arranged parallel to the fuselage 100. Figure 4 When the body 100 is in an upright position, the body 100 and the upright 110 are tilted forward at a certain angle θ. The vertical projection of the center of gravity of the body 100 falls within the range of the floor brush 200, allowing the body 100 to remain in a stable static state relative to the floor brush 200, thereby ensuring the overall stability of the device. As a specific solution of this embodiment, the angle θ can be a reasonable value such as 5°, 6°, 7°, 8°, 9°, 10°, 11°, or 12°.

[0050] Combine Figure 5 During normal use, the body 100 is tilted backward relative to the floor brush 200. At this time, the body 100 is in a tilted state, and the body 100 has an angle α relative to the surface to be cleaned. The angle α is generally a variable angle value within the range of 50° to 80°. The specific angle value of the angle α is determined by factors such as the user's height and holding habits.

[0051] Combine Figure 6When cleaning a surface to be cleaned in a low space, the body 100 is tilted backwards. At this time, the body 100 is in a tilted state, and the body 100 has an angle β relative to the surface to be cleaned. The angle β is generally a variable angle value within the range of 0° to 15°. Figure 7 When the body 100 is completely flat, the body 100 is roughly parallel to the surface to be cleaned, that is, the angle β is about 0°.

[0052] Combine Figure 4 In this embodiment, the fixing portion 510 of the gripping handle 500 is sleeved onto the top of the vertical pole 110, and the gripping portion 520 protrudes forward relative to the vertical pole 110. Specifically, the gripping portion 520 is generally in the shape of a hollow rectangular frame and includes an upper frame 521, a rear frame 522, a front frame 523, and a lower frame 524. The lower end of the rear frame 522 is connected to the upper end of the fixing portion 510, and the central axes of the two are roughly aligned. When the body 100 is in an upright position, the upper frame 521 extends obliquely downward from the upper end of the rear frame 522 from the rear to the front, the front frame 523 extends downward and rearward from the front end of the upper frame 521, and the front and rear ends of the lower frame 524 are respectively connected to the lower ends of the front frame 523 and the rear frame 522. The upper frame 521 forms a position for the user to hold. The extension direction of the upper frame 521 has an inclination angle γ relative to the length direction of the vertical pole 110, with a range of 50°≤γ≤60°. A key operation module 120 is provided at the junction of the front frame 523 and the upper frame 521. The key operation module 120 can be provided with only one key, or two or three keys can be provided at intervals along the circumference of the grip 500. When the user holds the upper frame 521, the thumb can press the key operation module 120. The user can complete the gripping and pressing actions with one hand, which is conducive to improving the user's operating experience. When the body 100 is in a tilted state, the upper frame 521 of the grip portion 520 is approximately horizontal, which can improve the user's grip comfort and prevent the user's wrist from being tilted too much upward or too much downward during use. As an alternative to this embodiment, the tilt angle γ can be set to a reasonable value such as 50°, 51°, 52°, 53°, 54°, 55°, 56°, 57°, 58°, 59°, or 60°. As an alternative to this embodiment, if the upper frame 521 extends longer, the key operation module 120 can be completely located at the front end of the upper frame 521; alternatively, if the upper frame 521 extends shorter, the key operation module 120 can be completely located at the upper end of the front frame 523. As an alternative to this embodiment, provided that the grip portion 520 meets the structural strength requirements, the lower frame 524 and / or the front frame 523 can be omitted.

[0053] When the body 100 is in an upright state, Figure 4Line E1 represents the leading edge of the vertical projection of the grip portion 520, and line E2 represents the leading edge of the floor brush 200. Line E1 is located in front of line E2, meaning that at least a portion of the vertical projection of the grip portion 520 extends forward of the floor brush 200 when the body 100 is in the upright position. The distance between lines E1 and E2 is the distance L that the vertical projection of the grip portion 520 extends forward of the leading edge of the floor brush 200 when the body 100 is in the upright position, where L is ≥ 4 cm. As an alternative to this embodiment, distance L can be set to a reasonable value, such as 4 cm, 4.5 cm, 5 cm, 6 cm, 7 cm, 8 cm, 9 cm, or 10 cm.

[0054] Combine Figure 6 When the body 100 is in a lying state (including a completely flat state), a portion of the grip portion 520 is higher than the front surface S1 of the body 100. Figure 7 Point J in the figure represents the highest point of the grip 520 , and straight line F represents the horizontal plane where point J is located. There is a height difference Δh between straight line F and the front surface S1 of the body 100 , and Δh can be set to a reasonable size such as 5cm, 6cm, 7cm, 8cm, 9cm, or 10cm.

[0055] Auxiliary wheels 130 are provided on the rear side of the body 100. When the body 100 is completely flat, the auxiliary wheels 130 contact the surface to be cleaned, and the rear surface S2 of the body 100 is roughly parallel to the surface to be cleaned. Using the auxiliary wheels 130 to support the body 100, the user does not need to bear the weight of the body 100 through the grip 520. The user only needs to apply a translational force to the body 100 through the grip 520, which can reduce the difficulty of user operation. When the body 100 is completely flat, the upper frame 521, front frame 523, and rear frame 522 of the grip 520 are higher than the vertical pole 110, and the lower frame 524 of the grip handle 500 is at the lowest position. The lower frame 524 has a height H1 relative to the surface to be cleaned, and the rear surface S2 of the body 100 has a height H2 relative to the surface to be cleaned, where H1>H2. The relationship between the height H1 and the height H2 is reasonably set to prevent the gripping handle 500 from contacting the surface to be cleaned when the body 100 is completely flat. The height H2 can also be used to further increase the height of the gripping portion 520 relative to the surface to be cleaned.

[0056] In order to enable the body 100 to drive the floor brush 200 to effectively enter a low space for cleaning, when the body 100 is in a completely flat state, the front surface S1 of the body 100 is preferably set lower than the highest point of the upper surface of the floor brush 200. Figure 7Point K in the figure represents the highest point on the upper surface of the floor brush 200, and line P represents the horizontal plane where point K is located. The horizontal plane represented by line P is slightly higher than the front surface S1 of the body 100, so that the body 100 can extend into low spaces that can be entered by the floor brush 200. As an alternative to this embodiment, when the body 100 is in a completely flat state, its front surface S1 can also be set at the same height as the horizontal plane represented by line P.

[0057] Combine Figure 1 In this embodiment, the body 100 is preferably configured as a flat shape with a front-to-back thickness T1 less than the left-to-right width W1. This minimizes the height of the body 100 relative to the surface to be cleaned when lying flat, allowing the flat body 100 to smoothly drive the floor brush 200 into low spaces for cleaning. Furthermore, the sewage bucket 410 is also preferably configured as a flat shape with a front-to-back thickness T2 less than the left-to-right width W2. This not only ensures the sewage bucket 410's collection capacity, but also facilitates reasonable control of the front-to-back thickness of the body 100 with the sewage bucket 410 installed, allowing the body 100 to maintain its overall flat shape. The sewage bucket 410 can be installed on either the front or rear side of the body 100. The specific structure of the sewage bucket 410 can be referenced to the prior art and will not be further described here. The fan 420 can be arranged at the upper end of the fuselage 100, or it can be used as a component of the suction power source assembly. The suction power source assembly can be detachably installed on the fuselage 100. The suction power source assembly detached from the fuselage 100 can be connected to a dust collection accessory for dry dust collection.

[0058] Combine Figure 3 , the liquid supply component 300 also includes a water pump 330. The clean water tank 310, the water pump 330 and the water distribution part 320 are distributed in sequence from upstream to downstream. The water pump 330 is arranged in the floor brush body 230. In order to reasonably control the front and rear thickness of the fuselage 100, in this embodiment, the clean water tank 310 is preferably arranged at the bottom of the front cover 240. The water distribution part 320 is provided with a liquid outlet 321 arranged toward the cleaning part 210. The water pump 330 can pump the liquid in the clean water tank 310 to the water distribution part 320. The liquid flowing into the water distribution part 320 is sprayed from the liquid outlet 321 onto the cleaning part 210, so that the cleaning part 210 can absorb the liquid and moisten it. As an alternative to this embodiment, the clean water tank 310 can also be detachably installed on the fuselage 100. As a preferred solution of this embodiment, the water distribution part 320 can adopt the existing technology of dividing a water inlet waterway into 2 N(N is a natural number) to divert the liquid into a structure with multiple water outlets. Of course, other components such as nozzles or nozzles that meet the liquid supply requirements can also be used instead of the water diversion component 320. As an improvement to this embodiment, the liquid supply component 300 can be provided with a heating component 340 upstream of the water diversion component 320. The heating component 340 is used to heat the liquid flowing through, and the heated liquid is sprayed out from the water diversion component 320. As an alternative to this embodiment, the liquid supply component 300 can also be provided with a spray component for spraying the cleaning liquid onto the surface to be cleaned. The spray component is connected to the end of the liquid supply pipeline through an electronic control valve. At this time, a ground spray button for the user to selectively operate can be provided on the handle. If the user presses the ground spray button, the electronic control valve opens, and the liquid supply component 300 can spray the cleaning liquid onto the surface to be cleaned through the spray component.

[0059] The surface cleaning device is further provided with a control module 700 , and electrical components such as the fan 420 , the motor, the water pump 330 , and the key operation module 120 are all electrically connected and / or signal-connected to the control module 700 .

[0060] When the surface cleaning device is not in use, the body 100 is in an upright state and remains stationary relative to the floor brush 200. At this time, at least part of the vertical projection of the gripping portion 520 extends forward beyond the front edge of the floor brush 200, and the vertical projection of the center of gravity of the body 100 falls within the range of the floor brush 200.

[0061] When the surface cleaning device is operating normally, the body 100 is tilted. At this point, the upper frame 521 of the grip 520 is approximately horizontal. The user can apply force to the body 100 through the upper frame 521 to maintain balance and push and pull the body 100 back and forth. The pushed and pulled body 100 drives the floor brush 200 to move. The liquid supply assembly 300 supplies cleaning liquid to the cleaning element 210. The fan 420 provides suction to create a negative pressure within the wastewater bucket 410 and generate a suction airflow from the suction port 220 to the wastewater bucket 410. After the cleaning element 210 absorbs the liquid and moistens it, it wipes the surface to be cleaned. Dirt scraped from the cleaning element 210 by the scraping element 260 flows into the wastewater bucket 410 along with the suction airflow.

[0062] When it is necessary to clean the surface to be cleaned in a low space, the body 100 is rotated downward to a lying state. When the body 100 is rotated to be completely flat, the auxiliary wheels 130 contact the surface to be cleaned and support the body 100. The rear surface S2 of the body 100 has a height H2 relative to the surface to be cleaned, and the gripping portion 520 has a height H1 relative to the surface to be cleaned. A portion of the gripping portion 520 is higher than the front surface S1 of the body 100, and the front surface S1 of the body 100 is not higher than the highest point of the upper surface of the floor brush 200 (indicated by point K). The user can push and pull the body 100 through the gripping portion 520 so that the body 100 drives the floor brush 200 to enter the low space for cleaning.

[0063] Example 2

[0064] Combine Figure 8 In this embodiment, when the body 100 is in an upright state, the front edge of the vertical projection of the gripping portion 520 represented by the straight line E1 is roughly aligned with the front edge of the floor brush 200 represented by the straight line E2, that is, the straight line E1 and the straight line E2 roughly coincide with each other.

[0065] The other structures of the second embodiment are the same as those of the first embodiment and will not be described in detail here.

[0066] Example 3

[0067] Combine Figure 9 In this embodiment, the lower end of the upright pole 110 is rotatably connected to the upper end of the body 100. When the body 100 is in a lying position, the upright pole 110 can rotate relative to the body 100 and remain in an upward position. The upward-pointing upright pole 110 increases the height of the grip portion 520 relative to the surface to be cleaned when the body 100 is lying down. This can further reduce the depth of squatting or the range of bending when cleaning a surface to be cleaned in a low space when the body 100 is lying down, thereby further reducing the difficulty of operation for the user when the body 100 is lying down.

[0068] In this embodiment, when the fuselage 100 is completely flat, the upright pole 110 may be perpendicular to the fuselage 100 or may be at other angles relative to the fuselage 100 .

[0069] In this embodiment, a ratchet structure can be provided at the rotational connection of the vertical pole 110 to keep the vertical pole 110 in a stable state relative to the fuselage 100. When the fuselage 100 is in an upright state or an inclined state, the ratchet structure keeps the vertical pole 110 parallel to the fuselage 100.

[0070] In this embodiment, when the body 100 is in an upright state and the upright pole 110 remains parallel to the body 100, the front edge of the vertical projection of the gripping portion 520 can extend forward beyond the front edge of the floor brush 200, and the front edge of the vertical projection of the gripping portion 520 can also be aligned with the front edge of the floor brush 200.

[0071] The other structures of the third embodiment are the same as those of the first embodiment and will not be described in detail here.

[0072] In addition to the above preferred embodiments, the present invention has other implementation methods. 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 in the claims of the present invention.

Claims

1. A surface cleaning device that can be laid down for cleaning, comprising a body, a floor brush, a liquid supply assembly, and a dirt suction assembly, wherein the upper end of the body is connected to a gripping handle, and the lower end of the body is pivotally connected to the floor brush, the liquid supply assembly comprises a clean water tank and a water distribution member connected to the clean water tank, the water distribution member being arranged corresponding to the cleaning member on the floor brush, the dirt suction assembly comprising a sewage bucket detachably mounted on the body and a fan arranged above the sewage bucket, the sewage bucket mounted on the body being connected to the dirt suction port on the floor brush, and characterized in that: The upper end of the fuselage is provided with a vertical pole for installing a gripping handle, and the gripping handle includes a fixing portion cooperating with the vertical pole and a gripping portion provided above the fixing portion. The fuselage has an upright state and a lying state relative to the floor brush. When the fuselage is in the upright state, at least part of the vertical projection of the gripping portion extends forward beyond the floor brush or the front edge of the vertical projection is aligned with the front edge of the floor brush. When the fuselage is in the lying state, its front surface is not higher than the highest point of the upper surface of the floor brush.

2. A surface cleaning device capable of lying down for cleaning according to claim 1, characterized in that: When the body is in an upright state, the vertical projection of the gripping portion extends forward relative to the front edge of the floor brush by a distance L, where L is ≥ 4 cm.

3. A surface cleaning device capable of lying down for cleaning according to claim 1, characterized in that: At least a portion of the gripping portion is higher than the body in the lying state.

4. A surface cleaning device capable of lying down for cleaning according to claim 3, characterized in that: The vertical pole is fixed to the upper end of the fuselage, and the vertical pole is parallel to the fuselage; or, the lower end of the vertical pole is rotatably connected to the upper end of the fuselage, and the vertical pole is upward relative to the fuselage when the fuselage is in a lying state.

5. The surface cleaning device capable of lying down for cleaning according to claim 1, characterized in that: The gripping portion includes an upper frame for providing a gripping position, and the upper frame extends obliquely downward from the rear to the front when the body is in an upright state.

6. A surface cleaning device capable of lying down for cleaning according to claim 5, characterized in that: The extending direction of the upper frame has an inclination angle γ relative to the length direction of the vertical pole, and the angle is 50°≤γ≤60°.

7. The surface cleaning device capable of lying down for cleaning according to claim 5, characterized in that: The gripping portion is in the shape of a hollow frame and includes a rear frame, a front frame and a lower frame. The rear frame is connected to the fixing portion and the center lines of the two coincide. The front frame extends downward and backward from the front end of the upper frame. The two ends of the lower frame are respectively connected to the lower end of the front frame and the lower end of the rear frame. A key operation module is provided on the front of the upper frame and / or the upper part of the front frame.

8. The surface cleaning device capable of lying down for cleaning according to claim 1, characterized in that: At least a portion of the gripping portion is located above the upright pole when the body is in the lying state, and the gripping handle has a height H1 relative to the surface to be cleaned when the body is in the lying state.

9. A surface cleaning device capable of lying down for cleaning according to claim 8, characterized in that: Auxiliary wheels are provided on the rear side of the body to support the body in a lying state. When the body is in the lying state, the rear surface of the body has a height H2 relative to the surface to be cleaned, and H2 is less than H1.

10. A surface cleaning device capable of lying down for cleaning according to any one of claims 1 to 9, characterized in that: The body is flat with a front-to-back thickness smaller than a left-to-right width, and the sewage bucket is also flat with a front-to-back thickness smaller than a left-to-right width; and / or, the clean water tank is arranged on the floor brush.

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