Surface cleaning device with adjustable suction force

Abstract

The utility model discloses a surface cleaning device with adjustable suction force, which belongs to the technical field of cleaning equipment, and comprises a machine body, a ground brush, a liquid supply assembly and a dirt suction assembly, the dirt suction assembly comprises a sewage bucket and a fan, the machine body has an inclined state and a lying state, two detection switches are arranged in the ground brush, the machine body is pivotally connected with the ground brush through a joint, and the liquid supply assembly is connected with the dirt suction assembly. A trigger part is arranged on the connector, the machine body rotating to the inclined state enables the trigger part on the connector to rotate to trigger one of the detection switches, the machine body rotating to the lying state enables the trigger part on the connector to rotate to trigger the other detection switch, and the connector rotates along with the machine body to enable the corner difference of the two detection switches triggered by the trigger part to be alpha, and the suction intensity of the fan is adjusted according to the state of the fan body. The suction strength of the draught fan can be matched with the state of the machine body through structural improvement, the risk that the draught fan is polluted by dirty liquid is reduced while the dirty liquid suction effect of the draught fan is guaranteed, and the working performance of the draught fan is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, in particular to a surface cleaning device with adjustable suction force. Background Art

[0002] Existing handheld surface cleaning machines 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 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 fan provides suction to generate negative pressure in the sewage bucket and form a dirt suction airflow that flows from the dirt suction port into the sewage bucket. The dirt at the dirt suction port can flow into the sewage bucket along the dirt 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. 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 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 of the lid of the sewage bucket, the maximum liquid level line is at a certain distance from the lid 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 lying down, it can prevent the dirty liquid from being sucked into the fuselage through the lid and contaminating the fan and other components. When the sewage bucket lies down with the fuselage, the height of the fan, sewage bucket, sewage inlet pipe, fan and other components decreases as the fuselage lies down, and the height difference between the liquid level in the sewage bucket and the fan is greatly reduced. When the fan power 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 flows from the sewage inlet pipe into the sewage bucket, it flows toward the fan under the action of negative pressure suction when lying down, and can reach a position closer to the bucket cover. That is, the sewage liquid flowing into the sewage bucket can move to a position closer to the exhaust channel on the bucket cover, so that the sewage liquid can easily enter the fuselage through the exhaust channel and pollute the fan, which is not conducive to ensuring the working performance of the fan. Utility Model Content

[0004] In order to solve the shortcomings and deficiencies existing in the above-mentioned prior art, the utility model provides a surface cleaning device with adjustable suction. Through structural improvement, the suction strength of the fan can be adapted to the state of the fuselage, while ensuring the fan's effect on sucking dirty liquid, reducing the risk of the fan being contaminated by the dirty liquid, thereby ensuring the working performance of the fan.

[0005] In order to achieve the above technical objectives, the utility model provides a surface cleaning device with adjustable suction, comprising a body, a floor brush pivotally connected to the lower end of the body, a liquid supply component for providing cleaning liquid and a dirt suction component for collecting dirt, the dirt suction component comprising a sewage bucket arranged on the body and a fan arranged above the sewage bucket, the body having an inclined state and a lying state, two detection switches for detecting the state of the body are arranged in the floor brush, the body is pivotally connected to the floor brush through a joint, a trigger part for triggering the detection switch is arranged on the joint, the body rotated to the inclined state causes the trigger part on the joint to rotate to trigger one of the detection switches, the body rotated to the lying state causes the trigger part on the joint to rotate to trigger the other detection switch, the joint rotates with the body so that the angular difference between the two detection switches respectively triggered by the trigger part is α, 45°≤α≤75°, and the fan adjusts the suction strength according to the state of the body.

[0006] Preferably, only one trigger part is provided, and two detection switches are arranged at intervals along the rotation direction of the joint and the interval angle is β, β≈α. When the fuselage is rotated to a tilted state, the trigger part on the joint triggers one of the detection switches, and when the fuselage is rotated to a lying state, the trigger part on the joint triggers the other detection switch.

[0007] Preferably, there are two trigger parts, which are arranged at intervals along the rotation direction of the joint and the interval angle is γ, γ≈α, and the two detection switches are distributed at intervals on the left and right. When the fuselage is rotated to a tilted state, one of the trigger parts triggers one of the detection switches, and when the fuselage is rotated to a lying state, the other trigger part triggers the other detection switch.

[0008] Preferably, the connector includes a first connecting section that cooperates with the fuselage and a second connecting section that cooperates with the floor brush, the first connecting section is vertically arranged to the second connecting section, and the second connecting section is axially arranged in the left-right direction so that the two detection switches are distributed at intervals along the axial direction of the second connecting section, and the two trigger parts are distributed at intervals along the axial direction of the second connecting section.

[0009] Preferably, the detection switch is a mechanical micro switch, and the trigger portion is a trigger protrusion that protrudes outward relative to the connector and is used to press the detection switch; or, the detection switch is a photoelectric switch, and the trigger portion is a trigger block that protrudes outward relative to the connector and is used to block the detection light; or, the detection switch is a magnetic induction switch, and the trigger portion is a magnet provided on the connector.

[0010] Preferably, the detection switch is arranged in the floor brush via a bracket, and the bracket is provided with a limiting structure for limiting the detection switch.

[0011] Preferably, the limiting structure includes a slot provided on the bracket and buckles provided on opposite sides of the slot, and the detection switch is limited in the slot by the buckles; and / or, the limiting structure includes a limiting hole provided on the bracket, and the detection switch is provided with a limiting column inserted into the limiting hole, and the limiting column cooperates with the limiting hole to limit the detection switch.

[0012] Preferably, the surface cleaning device further comprises a control module, the fan is controlled by the control module, two detection switch signals are connected to the control module, and the control module adjusts the operating power of the fan according to the trigger signals of each detection switch.

[0013] Preferably, a notch for installing a joint is provided on the rear side of the floor brush, and the liquid supply assembly includes a water pump. The water pump and a detection switch are both arranged in the floor brush and are respectively located on the left and right sides of the notch.

[0014] Preferably, the fuselage is flat in shape with a front-to-back thickness smaller than a left-to-right width, and the sewage bucket is detachably mounted on the front side of the fuselage.

[0015] After adopting the above technical solution, the utility model has the following advantages:

[0016] 1. The surface cleaning device provided by the utility model has a body with an inclined state and a lying state, two detection switches for detecting the state of the body are arranged in the floor brush, and a trigger part is arranged on the joint. When the body rotates to the inclined state, the joint that rotates synchronously with the body causes the trigger part to trigger one of the detection switches. When the body rotates to the lying state, the joint that rotates synchronously with the body causes the trigger part to trigger another detection switch, and the fan adjusts the suction strength according to the state of the body. When the body is in an inclined state, the height that the dirty liquid needs to climb to flow into the sewage bucket is relatively large. At this time, the fan is in a high suction state, ensuring the suction effect of the dirty liquid, so that the dirty liquid can flow smoothly into the sewage bucket under the suction of the fan. When the body is in a lying state, the height that the dirty liquid needs to climb to flow into the sewage bucket is relatively small. At this time, the fan is in a low suction state, ensuring that the dirty liquid can flow smoothly into the sewage bucket under the suction of the fan while preventing the dirty liquid from rushing to the bucket cover or even the fan, thereby reducing the risk of the fan being contaminated by the dirty liquid. The number of detection switches and the structure for triggering the detection switches are reasonably set so that the suction strength of the fan can be adapted to the state of the fuselage, while ensuring the fan's effect on sucking dirty liquids, while reducing the risk of the fan being contaminated by dirty liquids, ensuring the working performance of the fan, and thus ensuring the overall performance stability and cleaning effect of the device. The joint rotates with the fuselage so that the angle difference α of the two detection switches triggered by the trigger part is 45° to 75°. The size of the angle difference α is reasonably set so that the distribution position of the two detection switches can be adapted to the state of the fuselage, so that the triggered detection switch can accurately reflect the state of the fuselage.

[0017] 2. Only one trigger unit can be set. In this case, the two detection switches are spaced apart along the rotation direction of the joint, and the interval angle β of the two detection switches is approximately equal to the rotation angle difference α. When the fuselage is in a tilted state, the trigger unit triggers one of the detection switches. When the fuselage rotates to a lying state, the trigger unit triggers the other detection switch. The number of trigger units and the distribution of the two detection switches are reasonably set so that the trigger unit can trigger the corresponding detection switch according to the state of the fuselage, so that the suction strength of the fan can be adapted to the state of the fuselage.

[0018] 3. Two trigger parts can also be set. The two trigger parts are arranged at intervals along the rotation direction of the joint. The interval angle γ between the two trigger parts is approximately equal to the rotation angle difference α. At this time, the two detection switches are spaced apart from each other. When the fuselage is in a tilted state, one of the trigger parts triggers one of the detection switches. When the fuselage is rotated to a lying state, the other trigger part triggers the other detection switch. The number of trigger parts and the distribution of the two detection switches are reasonably set so that the trigger part can trigger the corresponding detection switch according to the state of the fuselage, so that the suction strength of the fan can be adapted to the state of the fuselage. The two detection switches are spaced apart from each other so that the trigger part can directly trigger the corresponding detection switch to avoid the situation where one detection switch interferes with the triggering of the other detection switch.

[0019] 4. The first connecting section of the connector cooperates with the fuselage, the second connecting section of the connector cooperates with the floor brush, and the axial direction of the second connecting section is arranged along the left-right direction, so that the two detection switches spaced apart on the left and right are also spaced apart along the axial direction of the second connecting section. Correspondingly, the two trigger parts are also spaced apart along the axial direction of the second connecting section. The distribution of the two detection switches and the two trigger parts relative to the connector is reasonably set so that the trigger part can smoothly trigger the corresponding detection switch.

[0020] 5. The detection switch can adopt a mechanical micro switch. In this case, the trigger part is a trigger protrusion protruding outward from the joint. The trigger protrusion presses the detection switch to trigger the detection switch. The detection switch can also adopt a photoelectric switch. In this case, the trigger part is a trigger block protruding outward from the joint. When the trigger block blocks the detection light so that the light receiving unit cannot receive the detection light emitted by the light emitting unit, the detection switch is triggered. The detection switch can also adopt a magnetic induction switch. In this case, the trigger part is a magnet provided on the joint. When the joint rotates with the rotation of the fuselage until the magnet corresponds to the magnetic induction switch, the magnetic induction switch is triggered. The specific structure of the trigger part is reasonably set according to the type of the detection switch, so that the detection switch can be smoothly triggered by the trigger part.

[0021] 6. The detection switch is arranged in the floor brush through a bracket, and the bracket is provided with a limiting structure. The detection switch installed on the bracket is limited by the limiting structure, thereby ensuring the structural stability of the detection switch arranged in the floor brush through the bracket, thereby ensuring that the detection switch can be triggered by the corresponding trigger part on the joint in a timely and smooth manner.

[0022] 7. The limiting structure includes a slot and a buckle provided on the bracket. The buckle is provided on opposite sides of the slot. The detection switch is stably limited in the slot by the buckle. The detection switch provided on the bracket is limited by the slot and the buckle. The limiting structure also includes a limiting hole provided on the bracket. The detection switch is provided with a limiting column. The limiting column is inserted into the limiting hole to limit the detection switch. The specific structure of the limiting structure is reasonably set so that the detection switch provided on the bracket can be effectively limited.

[0023] 8. The fan is controlled by the control module, and the two detection switch signals are connected to the control module. The control module can adjust the operating power of the fan according to the trigger signals of each detection switch. When the control module determines that the fuselage is in a tilted state according to the trigger signal fed back by the detection switch, the control module commands the fan to run at a higher power to ensure the suction effect of the dirty liquid at the suction port, so that the dirty liquid can be smoothly sucked into the sewage bucket. When the control module determines that the fuselage is in a lying state according to the signal fed back by the detection switch, the control module commands the fan to run at a lower power to prevent the dirty liquid flowing into the sewage bucket from rushing to the bucket cover or even the fan, thereby ensuring the suction effect while reducing the risk of the fan being contaminated by the dirty liquid. Reasonably set the control structure of the device so that the suction force of the fan can match the state of the fuselage.

[0024] 9. The water pump and the detection switch are both installed in the floor brush and are located on the left and right sides of the slot respectively. The detection switch should be installed as far away from the water pump as possible to avoid the situation where the detection switch is damaged by water due to leakage of the liquid supply component, thereby ensuring the performance stability of the detection switch and thus ensuring the accuracy of the detection switch in detecting the status of the fuselage.

[0025] 10. The fuselage is preferably configured to be a flat shape with a front-to-back thickness smaller than the left-to-right width, so as to minimize the height of the fuselage when it is in a lying state, so that the fuselage in a lying state can drive the floor brush to extend into a low space for cleaning. The sewage bucket is preferably detachably mounted on the front side of the fuselage. When the sewage bucket rotates with the fuselage to a lying state, the sewage bucket is located on the top side of the fuselage. The height of the sewage bucket relative to the fuselage when it is in a lying state is appropriately raised, and the sewage flowing from the sewage suction port to the sewage bucket flows upward, so that the sewage consumes more kinetic energy during the climbing process, thereby minimizing the distance that the sewage flowing into the sewage bucket moves toward the bucket cover under the premise of appropriate fan suction, so that the sewage can slowly fall into the sewage bucket, avoiding the sewage rushing to the bucket cover or even the fan, further reducing the risk of the fan being contaminated by the sewage, which is conducive to further ensuring the working performance of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a diagram of the entire surface cleaning device of Example 1;

[0027] Figure 2 It is a partial structural diagram of a floor brush in a surface cleaning device of Example 1;

[0028] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0029] Figure 4 It is another structural diagram of a floor brush in the surface cleaning device of the first embodiment;

[0030] Figure 5 for Figure 4 The enlarged view of point B in the middle;

[0031] Figure 6 is a cross-sectional view of a floor brush in a surface cleaning device of Example 1 along the front-to-back direction;

[0032] Figure 7 It is a partial cross-sectional view of a floor brush in a surface cleaning device of Example 1;

[0033] Figure 8 It is a structural diagram of a joint in a surface cleaning device of Example 1;

[0034] Fig. 9 It is a schematic structural diagram of a liquid supply assembly in a surface cleaning device in Example 1;

[0035] Fig.10 It is a structural diagram of the surface cleaning device in the first embodiment when the detection switch is arranged on the bracket;

[0036] Fig.11 An exploded view of a detection switch and a bracket in a surface cleaning device in Example 1;

[0037] Fig.12 It is a structural diagram of the surface cleaning device in the first embodiment when the body is in a tilted state;

[0038] Fig.13 It is a structural diagram of the surface cleaning device in the first embodiment when the body is in a lying state;

[0039] Fig.14 A schematic diagram of the positional relationship between a joint part and a detection switch in a surface cleaning device of Embodiment 2;

[0040] Fig.15 It is a partial cross-sectional view of a floor brush in the surface cleaning device of Embodiment 3;

[0041] Fig.16 Schematic diagram of the distribution of connectors and detection switches in the surface cleaning device of Example 4;

[0042] Fig.17 Schematic diagram of the distribution of connectors and detection switches in the surface cleaning device of Example 5.

[0043] In the figure, 100-body, 110-handle, 120-cavity,

[0044] 200-floor brush, 210-floor brush body, 220-front cover, 230-slot, 240-accommodating chamber, 250-cleaning member, 260-scraping member, 270-sewage suction port, 280-bracket, 281-slot, 282-buckle, 283-limiting hole,

[0045] 300-liquid supply assembly, 310-water purification box, 320-water pump, 330-water distribution component, 331-water outlet, 340-heating component,

[0046] 400-sewage suction assembly, 410-sewage bucket, 420-fan,

[0047] 500-detection switch, 510-first detection switch, 520-second detection switch, 530-limiting column, 541-light emitting unit, 542-light receiving unit,

[0048] 600-connector, 610-trigger part, 611-first trigger protrusion, 612-second trigger protrusion, 620-first connecting section, 630-second connecting section, 640-trigger stopper, 650-magnet, 660-baffle,

[0049] 700-Control module. DETAILED DESCRIPTION

[0050] 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.

[0051] Embodiment 1

[0052] Combination Figures 1 to 13A surface cleaning device with adjustable suction force is provided in a first embodiment of the utility model, comprising a body 100, a floor brush 200 pivotally connected to the lower end of the body 100, a liquid supply assembly 300 for providing cleaning liquid, and a dirt suction assembly 400 for collecting dirt, wherein the dirt suction assembly 400 comprises a sewage bucket 410 arranged on the body 100 and a fan 420 arranged above the sewage bucket 410. The body 100 has a tilted state and a lying state. Two detection switches 500 for detecting the state of the body 100 are provided in the floor brush 200. The body 100 and the floor brush 200 are pivotally connected through a joint 600. The joint 600 is provided with a trigger part 610 for triggering the detection switch 500. The body 100 rotated to the tilted state causes the trigger part 610 on the joint 600 to rotate to trigger one of the detection switches 500. The body 100 rotated to the lying state causes the trigger part 610 on the joint 600 to rotate to trigger the other detection switch 500. The joint 600 rotates with the body 100 so that the difference in rotation angles at which the two detection switches 500 are respectively triggered by the trigger part 610 is α, 45°≤α≤75°, and the fan 420 adjusts the suction strength according to the state of the body 100.

[0053] The number of detection switches 500 and the structure for triggering the detection switches 500 are reasonably set, so that the suction strength of the fan 420 can be adapted to the state of the fuselage 100, while ensuring the effect of the fan 420 on the suction of dirty liquid, the risk of the fan 420 being contaminated by the dirty liquid is reduced, the working performance of the fan 420 is guaranteed, and thus the overall performance stability and cleaning effect of the device are guaranteed. The joint 600 rotates with the fuselage 100 so that the angle difference α of the two detection switches 500 respectively triggered by the trigger part 610 is 45° to 75°. The size of the angle difference α is reasonably set so that the distribution position of the two detection switches 500 can be adapted to the state of the fuselage 100, so that the triggered detection switch 500 can accurately reflect the state of the fuselage 100.

[0054] Combination Figure 4 , Figure 8 In this embodiment, the connector 600 includes a first connecting section 620 that cooperates with the body 100 and a second connecting section 630 that cooperates with the floor brush 200. The extension direction of the first connecting section 620 is substantially perpendicular to the extension direction of the second connecting section 630. The first connecting section 620 is inserted into the lower end of the body 100, and the first connecting section 620 and the lower end of the body 100 are locked by a buckle structure. Figure 1 , Figure 2The floor brush 200 includes a floor brush body 210 and a front cover 220 disposed on the front side of the floor brush body 210. A notch 230 for mounting a joint 600 is disposed in the middle of the rear part of the floor brush body 210. The left and right groove walls of the notch 230 are provided with shaft holes for inserting the second connecting section 630. The two ends of the second connecting section 630 are respectively inserted into the shaft holes on the left and right groove walls of the notch 230, so that the joint 600 is hinged to the floor brush body 210. A handle 110 is disposed at the upper end of the body 100, and a roller is disposed on the bottom side of the floor brush body 210. When in use, the user can push and pull the body 100 through the handle 110, and the pushed and pulled body 100 drives the floor brush 200 to move on the surface to be cleaned.

[0055] Combination Figure 6 The front cover 220 is detachably mounted on the front side of the floor brush body 210 through a locking structure. When the front cover 220 is mounted on the front side of the floor brush body 210, the front cover 220 cooperates with the floor brush body 210 to form a receiving chamber 240. The floor brush 200 is also provided with a cleaning member 250 detachably mounted at the receiving chamber 240. The cleaning member 250 may adopt a single roller brush structure, a double roller brush structure, or a crawler mop structure. There are no excessive restrictions on the cleaning member 250. A motor for driving the cleaning member 250 is provided in the floor brush body 210 or the receiving chamber 240. When the cleaning member 250 is mounted at the receiving chamber 240, the motor is connected to the cleaning member 250 by transmission. The motor drives the cleaning member 250 to rotate so that the cleaning member 250 wipes the surface to be cleaned. In order to improve the wiping effect of the cleaning member 250, a scraping member 260 for scraping the cleaning member 250 is provided on the front side of the floor brush body 210. The scraping member 260 may be provided with only scraping strips, or only comb teeth, or both scraping strips and comb teeth. There is no excessive restriction on the scraping member 260. The scraping member 260 may be fixed to the front side of the floor brush body 210, or may be fixed to the bottom of the front cover 220. There is no excessive restriction on the installation position of the scraping member 260.

[0056] Combination Fig. 9In this embodiment, the liquid supply assembly 300 includes a water purification box 310, a water pump 320 and a water distribution member 330 which are sequentially distributed from upstream to downstream through a liquid supply pipeline. The water purification box 310 is detachably mounted on the machine body 100 or detachably mounted on the floor brush body 210 or fixed to the bottom of the front cover 220. The water pump 320 is arranged in the floor brush body 210. The water distribution member 330 is arranged on the front side of the floor brush body 210 or the bottom of the front cover 220. The water distribution member 330 is located above the scraping member 260. The water distribution member 330 is provided with a water outlet 331 arranged toward the cleaning member 250. The cleaning liquid in the water purification box 310 flows to the water distribution member 330 under the pumping action of the water pump 320. The cleaning liquid flowing into the water distribution member 330 is sprayed from the water outlet 331 onto the cleaning member 250. The cleaning member 250 absorbs the liquid and wets it to wet the surface to be cleaned. As a preferred solution of this embodiment, the water distribution member 330 can adopt the prior art method of dividing a water inlet waterway into two N (N is a natural number) to divert the liquid into a plurality of water outlet waterways. Of course, other components such as nozzles or nozzles that meet the liquid supply requirements may also be used instead of the water diverter 330. As an improved solution of the present embodiment, the liquid supply component 300 may be provided with a heating component 340 upstream of the water diverter 330. The heating component 340 is used to heat the liquid flowing through, and the heated liquid is sprayed out from the water diverter 330. As an alternative to the present embodiment, the liquid supply component 300 may also be provided with a liquid spraying component for spraying the cleaning liquid onto the surface to be cleaned. The liquid spraying component is connected to the end of the liquid supply pipeline through an electronic control valve. At this time, a ground spraying button for the user to selectively operate may be provided on the handle 110. If the user presses the ground spraying 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 liquid spraying component.

[0057] Combination Figure 6 The floor brush body 210 is provided with a sewage suction port 270, which is located behind the accommodating cavity 240 and communicated with the accommodating cavity 240. At the same time, the sewage suction port 270 is located below the scraper 260. A sewage suction pipe for connecting the sewage suction port 270 and the sewage bucket 410 is provided between the lower end of the body 100 and the floor brush body 210. The fan 420 provides suction to generate negative pressure in the sewage bucket 410. Under the action of the negative pressure, a sewage suction airflow is formed from the sewage suction port 270 to the sewage bucket 410. The dirt scraped out of the cleaning member 250 by the scraper 260 follows the sewage suction airflow through the sewage suction port 270 and flows to the sewage bucket 410. The dirt flowing to the sewage bucket 410 is collected in the sewage bucket 410. The sewage suction airflow flowing through the sewage bucket 410 is discharged to the outside through the exhaust structure on the body 100 after flowing through the fan 420.

[0058] In this embodiment, the fuselage 100 is preferably set to a flat shape with a front-to-back thickness T1 less than the left-to-right width W1, and the sewage bucket 410 is preferably detachably mounted on the front side of the fuselage 100. The front side of the fuselage 100 is provided with a cavity 120 for mounting the sewage bucket 410. The sewage bucket 410 is also preferably set to a flat shape with a front-to-back thickness T2 less than the left-to-right width W2, so as to reasonably control the overall thickness of the fuselage 100 while ensuring the sewage collection capacity of the sewage bucket 410, and appropriately reduce the height of the fuselage 100 when lying down, so that the fuselage 100 can drive the floor brush 200 to enter the low space for cleaning. The specific structure of the sewage bucket 410 can refer to the prior art and will not be repeated here. As a feasible solution of this embodiment, the fan 420 can be directly fixed in the upper end of the fuselage 100, and the fan 420 can also be used as a component of the suction power source assembly. The suction power source assembly can be detachably mounted on the fuselage 100, and the suction power source assembly detached from the fuselage 100 can be connected to accessories for dry vacuuming.

[0059] Combination Fig.12 When the body 100 is in an inclined state, the body 100 has an inclination angle θ1 relative to the surface to be cleaned, and θ1 is about 60° to 85°. Fig.13 When the body 100 is lying down, the body 100 has an inclination angle θ2 relative to the surface to be cleaned, and θ2 is about 0° to 15°. When the body 100 rotates forward and backward relative to the floor brush 200, the joint 600 rotates synchronously with the body 100, and the second connecting section 630 of the joint 600 rotates with the body 100 so that the angle difference α at which the two detection switches 500 are respectively triggered by the triggering part 610 can be determined by θ1-θ2.

[0060] Combination Figure 2 In this embodiment, in order to prevent the detection switch 500 from being damaged by water, the detection switch 500 and the water pump 320 are both arranged in the floor brush body 210 and are respectively located on the left and right sides of the notch 230, so that the internal space of the floor brush body 210 can be reasonably utilized. Figure 3 , Figure 5 , Figure 7, the two detection switches 500 are spaced apart along the left-right direction. Since the axial direction of the second connection section 630 is arranged along the left-right direction, the two detection switches 500 are also spaced apart along the axial direction of the second connection section 630. One of the detection switches 500 is a first detection switch 510 for detecting whether the fuselage 100 is in a tilted state, and the other detection switch 500 is a second detection switch 520 for detecting whether the fuselage 100 is in a lying state. A control module 700 is provided in the fuselage 100, and the fan 420 is controlled by the control module 700. Both the two detection switches 500 are electrically connected to and / or signal-connected to the control module 700. The control module 700 adjusts the operating power of the fan 420 according to the trigger signal of each detection switch 500, thereby adjusting the suction strength of the fan 420. When the control module 700 determines that the body 100 is in a tilted state according to the trigger signal fed back by the detection switch 500, the control module 700 commands the fan 420 to operate at a higher power, and accordingly, the suction strength of the sewage suction airflow is stronger, ensuring the suction effect of the sewage liquid at the sewage suction port 270, so that the sewage liquid can be smoothly sucked into the sewage bucket 410. When the control module 700 determines that the body 100 is in a lying state according to the signal fed back by the detection switch 500, the control module 700 commands the fan 420 to operate at a lower power, and accordingly, the suction strength of the sewage suction airflow is weaker, which can prevent the sewage flowing into the sewage bucket 410 from rushing to the bucket cover or even the fan 420, ensuring the sewage suction effect while reducing the risk of the fan 420 being contaminated by the sewage.

[0061] In this embodiment, two trigger parts 610 are provided, and the two trigger parts 610 are distributed at intervals along the circumference of the second connecting section 630. At the same time, the two trigger parts 610 are distributed at intervals along the axial direction of the second connecting section 630 corresponding to the two detection switches 500. Specifically, the two detection switches 500 of this embodiment are both mechanical micro switches. Accordingly, the trigger part 610 includes a first trigger protrusion 611 for triggering the first detection switch 510 and a second trigger protrusion 612 for triggering the second detection switch 520. Both the first trigger protrusion 611 and the second trigger protrusion 612 protrude outward relative to the second connecting section 630. The two trigger protrusions are not only distributed at a certain angle along the circumference of the second connecting section 630, but also staggered along the axial direction of the second connecting section 630. When the body 100 rotates to the tilted state, the joint 600 that rotates with the body 100 causes the first trigger protrusion 611 to press the first detection switch 510, and the second trigger protrusion 612 cannot press the second detection switch 520. When the body 100 swings up and down within the angle range of the tilted state, the first detection switch 510 is always in a triggered state under the pressing action of the first trigger protrusion 611, and the second detection switch 520 is always in a non-triggered state. When the body 100 rotates to the lying state, the joint 600 that rotates with the body 100 causes the second trigger protrusion 612 to press the second detection switch 520, and the first trigger protrusion 611 cannot press the first detection switch 510. When the body 100 swings up and down within the angle range of the lying state, the second detection switch 520 is always in a triggered state under the pressing action of the second trigger protrusion 612, and the first detection switch 510 is always in a non-triggered state.

[0062] In order to enable the first triggering protrusion 611 to always trigger the first detection switch 510 when the body 100 is in the tilted state, the first triggering protrusion 611 has a certain width in the circumferential direction of the second connecting section 630. In order to enable the second triggering protrusion 612 to always trigger the second detection switch 520 when the body 100 is in the lying state, the second triggering protrusion 612 also has a certain width in the circumferential direction of the second connecting section 630. In this embodiment, since the swing amplitude of the body 100 in the tilted state is greater than the swing amplitude in the lying state, the width of the first triggering protrusion 611 is greater than the width of the second triggering protrusion 612.

[0063] When the connector 600 rotates to cause the first trigger protrusion 611 to trigger the first detection switch 510, the interference between the first trigger protrusion 611 and the spring sheet of the first detection switch 510 gradually increases, and the first trigger protrusion 611 presses the first detection switch 510 so that the position where the first detection switch 510 is triggered is located on a certain radial direction K1 of the second connection section 630. When the connector 600 rotates to cause the second trigger protrusion 612 to trigger the second detection switch 520, the interference between the second trigger protrusion 612 and the spring sheet of the second detection switch 520 gradually increases, and the second trigger protrusion 612 presses the second detection switch 520 so that the position where the second detection switch 520 is triggered is located on another radial direction K2 of the second connection section 630. The angle between K1 and K2 is the interval angle γ of the two trigger parts 610 spaced apart in the rotation direction of the second connection section 630, γ≈α, and the interval angle γ between the two trigger parts 610 is approximately equal to the rotation angle difference α, so that the two detection switches 500 can be smoothly triggered by the two trigger protrusions respectively.

[0064] Combination Fig.10 , Fig.11 The two detection switches 500 are respectively vertically placed in the floor brush body 210 through the bracket 280, and the bracket 280 is provided with a limiting structure for limiting the detection switch 500. Specifically, the limiting structure includes a slot 281 provided on the bracket 280 and buckles 282 provided on opposite sides of the slot 281. The detection switch 500 is inserted into the slot 281. At the same time, the buckle 282 buckles the opposite sides of the detection switch 500, so that the detection switch 500 is limited in the slot 281 by the buckle 282. The limiting structure also includes a limiting hole 283 provided on the bracket 280. The detection switch 500 is provided with a limiting column 530 inserted into the limiting hole 283. The limiting column 530 cooperates with the limiting hole 283 to limit the detection switch 500. In addition, the limiting column 530 is tightened with a screw, and the outer diameter of the screw head is larger than the aperture of the limiting hole 283. The detection switch 500 is locked on the bracket 280 through the cooperation of the screw and the limiting column 530. The bracket 280 is fixed to the floor brush body 210 by screws.

[0065] Combination Fig.12When the body 100 rotates to the tilted state, the tilt angle of the body 100 relative to the surface to be cleaned is relatively large, and the height that the dirty liquid needs to climb from the suction port 270 to flow into the sewage bucket 410 is relatively large. At this time, the joint 600 that rotates synchronously with the body 100 causes the first trigger protrusion 611 on the second connecting section 630 to trigger the first detection switch 510, and the second detection switch 520 cannot be triggered by the second trigger protrusion 612. The control module 700 determines that the body 100 is in the tilted state according to the trigger signal of the first detection switch 510. The control module 700 commands the fan 420 to operate at a higher power, such as any value between 75% and 100% of the rated power. At this time, the suction strength of the fan 420 is relatively strong, ensuring that the dirty liquid at the suction port 270 can flow smoothly into the sewage bucket 410 under the action of negative pressure suction.

[0066] Combination Fig.13 When the body 100 rotates to the lying state, the inclination angle of the body 100 relative to the surface to be cleaned is small, and the height that the dirty liquid needs to climb from the suction port 270 to flow into the sewage bucket 410 is small. At this time, the joint 600 that rotates synchronously with the body 100 causes the second trigger protrusion 612 on the second connecting section 630 to trigger the second detection switch 520, and the first detection switch 510 cannot be triggered by the first trigger protrusion 611. The control module 700 determines that the body 100 is in the lying state according to the trigger signal of the second detection switch 520. The control module 700 commands the fan 420 to operate at a lower power, such as any value between 30% and 65% of the rated power. At this time, the suction strength of the fan 420 is weak, which can prevent the dirty liquid flowing into the sewage bucket 410 from rushing to the bucket cover or even the fan 420, thereby ensuring the suction effect while reducing the risk of the fan 420 being contaminated by the dirty liquid.

[0067] In another feasible solution of this embodiment, the fuselage 100 has a third state between the tilted state and the lying state. At this time, the two detection switches 500 are not triggered by the corresponding triggering protrusions. The control module 700 determines that the fuselage 100 is in the third state. At this time, the control module 700 commands the fan 420 to operate at a medium power, such as 65% to 75% of the rated power. When the fuselage 100 rotates from the tilted state to the lying state, the control module 700 can command the fan 420 to operate at a medium power.

[0068] Embodiment 2

[0069] Combination Fig.14 In this embodiment, two detection switches are arranged at intervals along the rotation direction of the joint, and the trigger portion 610 is provided with only one trigger protrusion. When the joint rotates to a tilted state following the body, the trigger protrusion triggers the first detection switch 510. When the joint 600 rotates to a lying state following the body 100, the trigger protrusion triggers the second detection switch 520.

[0070] In order to enable both detection switches to be triggered smoothly by the trigger protrusion, in this embodiment, the two detection switches 500 are arranged at the same axial position corresponding to the second connection section 630. Specifically, the first detection switch 510 is vertically placed in the floor brush body 210 through the bracket 280, and the second detection switch 520 is horizontally placed in the floor brush body 210 through the bracket 280. The position where the maximum interference between the trigger protrusion and the spring sheet of the first detection switch 510 is located on a certain radial direction K3 of the second connection section 630, and the position where the maximum interference between the trigger protrusion and the spring sheet of the second detection switch 520 is located on another radial direction K4 of the second connection section 630. The angle between K3 and K4 is the interval angle β of the two detection switches 500 arranged along the rotation direction of the second connection section 630, β≈α, so that the joint 600 that rotates to the inclined state or lying state with the fuselage 100 can enable the trigger protrusion to smoothly trigger the first detection switch 510 or the second detection switch 520.

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

[0072] Embodiment 3

[0073] Combination Fig.15 In this embodiment, the first detection switch 510 is vertically placed in the floor brush body 210 through a bracket, and the second detection switch 520 is horizontally placed in the floor brush body 210 through a bracket. The two detection switches 500 are distributed at intervals along the axial direction of the second connecting section 630, and two trigger protrusions are provided and are used to trigger the two detection switches 500 respectively.

[0074] The other structures of the third embodiment are the same as those of the first embodiment and will not be described again here.

[0075] Embodiment 4

[0076] Combination Fig.16 In this embodiment, the detection switch 500 adopts a photoelectric switch, which includes a light emitting unit 541 and a light receiving unit 542 that are relatively spaced apart along the axial direction of the second connecting section 630, and the trigger part 610 is a trigger block 640 that protrudes outward from the second connecting section 630 of the connector 600.

[0077] When the connector 600 rotates with the fuselage 100 so that the trigger block 640 is located between the light emitting unit 541 and the light receiving unit 542 of the photoelectric switch, the light receiving unit 542 cannot receive the light emitted by the light emitting unit 541, and the photoelectric switch is therefore triggered. The control module 700 determines the state of the fuselage 100 according to the trigger signal of the photoelectric switch, and commands the fan 420 to operate at a corresponding power according to the state of the fuselage 100.

[0078] As a specific solution of this embodiment, two photoelectric switches are provided and spaced apart along the axial direction of the second connecting section 630, and the two photoelectric switches are staggered at a certain angle along the circumference of the second connecting section 630. Accordingly, two trigger blocks 640 are spaced apart along the axial direction of the second connecting section 630, and the two trigger blocks 640 are staggered at a certain angle along the circumference of the second connecting section 630. When the body 100 rotates to the tilted state, one of the trigger blocks 640 triggers one of the photoelectric switches. When the body 100 rotates to the lying state, the other trigger block 640 triggers the other photoelectric switch.

[0079] As another specific solution of this embodiment, two photoelectric switches are provided and staggered at a certain angle along the circumference of the second connecting section 630, and the two photoelectric switches are provided at the same axial position of the second connecting section 630. Accordingly, only one trigger block 640 is provided. When the body 100 rotates to the tilted state, the trigger block 640 triggers one of the photoelectric switches. When the body 100 rotates to the tilted state, the trigger block 640 triggers the other photoelectric switch.

[0080] The other structures of the fourth embodiment are the same as those of the first embodiment and will not be described in detail here.

[0081] Embodiment 5

[0082] Combination Fig.17 In this embodiment, the detection switch 500 is a magnetic induction switch, and the detection switch 500 is a magnet 650 embedded in the second connecting section 630. When the magnet 650 corresponds to the magnetic induction switch, the magnetic induction switch is triggered by the magnet 650, and the level signal output by the magnetic induction switch changes. The control module 700 determines the state of the fuselage 100 according to the level signal of the magnetic induction switch, and commands the fan 420 to operate at a corresponding power according to the state of the fuselage 100.

[0083] As a specific solution of this embodiment, two magnetic induction switches are provided and spaced apart along the axial direction of the second connecting section 630, and the two magnetic induction switches are staggered at a certain angle along the circumference of the second connecting section 630. Correspondingly, two magnets 650 are spaced apart along the axial direction of the second connecting section 630, and the two magnets 650 are staggered at a certain angle along the circumference of the second connecting section 630. When the body 100 rotates to a tilted state, one of the magnets 650 triggers one of the magnetic induction switches. When the body 100 rotates to a lying state, the other magnet 650 triggers the other magnetic induction switch.

[0084] As another specific solution of this embodiment, two magnetic induction switches are provided and staggered at a certain angle along the circumference of the second connecting section 630, and the two magnetic induction switches are provided at the same axial position of the second connecting section 630. Accordingly, only one magnet 650 is provided. When the body 100 rotates to the tilted state, the magnet 650 triggers one of the magnetic induction switches. When the body 100 rotates to the tilted state, the magnet 650 triggers the other magnetic induction switch.

[0085] In order to reduce the influence of the magnet 650 on the other magnetic induction switch, the second connecting section 630 may be provided with a baffle 660 protruding outwards between the two magnets.

[0086] As a feasible solution of this embodiment, the magnetic induction switch can adopt a magnetic switch such as a Hall element or a reed switch.

[0087] The other structures of the fifth embodiment are the same as those of the first embodiment and will not be described in detail here.

[0088] 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 with adjustable suction force, comprising a body, a floor brush pivotally connected to the lower end of the body, a liquid supply assembly for providing cleaning liquid and a dirt suction assembly for collecting dirt, the dirt suction assembly comprising a sewage bucket arranged on the body and a fan arranged above the sewage bucket, characterized in that: The body has a tilted state and a lying state, and two detection switches for detecting the state of the body are arranged in the floor brush. The body is pivotally connected to the floor brush through a joint, and a trigger part for triggering the detection switch is arranged on the joint. The body rotated to a tilted state causes the trigger part on the joint to rotate to trigger one of the detection switches, and the body rotated to a lying state causes the trigger part on the joint to rotate to trigger the other detection switch. The joint rotates with the body so that the difference in rotation angles at which the two detection switches are respectively triggered by the trigger part is α, 45°≤α≤75°, and the fan adjusts the suction strength according to the state of the body.

2. A surface cleaning device with adjustable suction according to claim 1, characterized in that: Only one trigger part is provided, and two detection switches are arranged at intervals along the rotation direction of the joint and the interval angle is β, β≈α. When the fuselage is rotated to a tilted state, the trigger part on the joint triggers one of the detection switches, and when the fuselage is rotated to a lying state, the trigger part on the joint triggers the other detection switch.

3. A surface cleaning device with adjustable suction according to claim 1, characterized in that: There are two trigger parts, which are arranged at intervals along the rotation direction of the joint and the interval angle is γ, γ≈α, and the two detection switches are distributed at intervals on the left and right. When the fuselage is rotated to a tilted state, one of the trigger parts triggers one of the detection switches, and when the fuselage is rotated to a lying state, the other trigger part triggers the other detection switch.

4. A surface cleaning device with adjustable suction according to claim 3, characterized in that: The joint includes a first connecting section that cooperates with the fuselage and a second connecting section that cooperates with the floor brush. The first connecting section is vertically arranged to the second connecting section. The axial direction of the second connecting section is arranged along the left and right directions so that the two detection switches are distributed at intervals along the axial direction of the second connecting section, and the two trigger parts are distributed at intervals along the axial direction of the second connecting section.

5. A surface cleaning device with adjustable suction according to any one of claims 1 to 4, characterized in that: The detection switch is a mechanical micro switch, and the trigger part is a trigger protrusion that protrudes outward relative to the connector and is used to press the detection switch; or, the detection switch is a photoelectric switch, and the trigger part is a trigger block that protrudes outward relative to the connector and is used to block the detection light; or, the detection switch is a magnetic induction switch, and the trigger part is a magnet provided on the connector.

6. The surface cleaning device with adjustable suction according to claim 1, characterized in that: The detection switch is arranged in the floor brush through a bracket, and the bracket is provided with a limiting structure for limiting the detection switch.

7. A surface cleaning device with adjustable suction according to claim 6, characterized in that: The limiting structure includes a slot provided on the bracket and buckles provided on opposite sides of the slot, and the detection switch is limited in the slot by the buckles; and / or, the limiting structure includes a limiting hole provided on the bracket, and the detection switch is provided with a limiting column inserted into the limiting hole, and the limiting column cooperates with the limiting hole to limit the detection switch.

8. The surface cleaning device with adjustable suction according to claim 1, characterized in that: The surface cleaning device also includes a control module, the fan is controlled by the control module, two detection switch signals are connected to the control module, and the control module adjusts the operating power of the fan according to the trigger signals of each detection switch.

9. The surface cleaning device with adjustable suction according to claim 1, characterized in that: The rear side of the floor brush is provided with a notch for installing a joint, and the liquid supply component comprises a water pump. The water pump and a detection switch are both arranged in the floor brush and are respectively located on the left and right sides of the notch.

10. A surface cleaning device with adjustable suction according to claim 1 or 2 or 3 or 4 or 6 or 7 or 8 or 9, characterized in that: The fuselage is in a flat shape with a front-to-back thickness smaller than a left-to-right width, and the sewage bucket can be detachably installed on the front side of the fuselage.

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