Self-draining cleaning robot and passive sewage station

Abstract

The present application relates to the technical field of cleaning robots, and in particular to a self-draining cleaning robot and a passive sewage station. The self-draining cleaning robot includes a body and a sewage tank, the sewage tank is provided with a sewage outlet, the body has a head and a tail along the moving direction, the sewage tank is arranged at the tail of the body, the sewage tank includes side walls, a top wall, a bottom wall and a rear wall located at the tail; the side walls, the bottom wall and the rear wall have an adjacent portion, the sewage outlet is arranged on the bottom wall and is located in the adjacent portion; the body is also provided with a sewage valve and a driving assembly, the driving assembly is used to drive the sewage valve to move so that the liquid in the sewage tank is discharged from the sewage outlet. The self-draining cleaning robot prevents sewage from contaminating the components at the bottom of the body by arranging the sewage tank at the tail of the body and arranging the sewage outlet on the sewage tank at the adjacent portion of the side walls, the bottom wall and the rear wall; and no pipeline is required to guide the sewage discharge.

Description

Technical Field

[0001] The present application relates to the technical field of cleaning robots, and in particular to a self-draining cleaning robot and a passive sewage discharge station. Background Art

[0002] The cleaning robot mainly includes a sewage tank and a sewage suction component. The sewage suction component sucks sewage into the sewage tank during the cleaning process of the cleaning robot. An automatic sewage discharge component is provided on the sewage tank. A sewage discharge port corresponding to the automatic sewage discharge component is formed inside the sewage tank. Due to space limitations, the automatic sewage discharge component is prone to accumulation and blockage at the corners of the pipe. In addition, during the automatic sewage discharge process of the cleaning robot, since the sewage flows directly out of the sewage tank, it is easy to contaminate other parts of the body, such as the mop, thereby affecting the working efficiency of the cleaning robot. Utility Model Content

[0003] In order to solve the above technical problems, the present application provides a self-draining cleaning robot and a passive sewage discharge station.

[0004] In a first aspect, the present application provides a self-draining cleaning robot, comprising a body and a sewage tank, the sewage tank being provided with a sewage outlet, the body having a head and a tail along a moving direction, the sewage tank being provided at the tail of the body, the sewage tank comprising a side wall, a top wall, a bottom wall and a rear wall located at the tail, the rear wall matching the outer contour of the tail;

[0005] The side wall, bottom wall and rear wall have an adjacent portion, the sewage outlet is arranged on the bottom wall and is located in the adjacent portion; the machine body is also provided with a sewage valve and a driving component, the driving component is used to drive the sewage valve to move so that the liquid in the sewage tank is discharged from the sewage outlet.

[0006] Optionally, the intersection portion is a preset radius range extending from the intersection vertex of the side wall, the bottom wall and the rear wall along the bottom wall.

[0007] Optionally, a cleaning member is further provided at the rear of the machine body, and the cleaning member is arranged away from the sewage outlet, or a preset distance is provided between the cleaning member and the sewage outlet.

[0008] Optionally, the sewage tank is provided with a transition port on a side wall adjacent to the sewage outlet, the transition port is communicated with the sewage outlet, and the sewage outlet valve is blocked at the transition port.

[0009] Optionally, the sewage valve includes a door body, which is hinged to the side wall of the sewage tank through a rotating shaft so that the door body is blocked at the transition port, and the driving assembly drives the door body to rotate so that the door body is moved away from the transition port.

[0010] Optionally, the sewage tank is provided with a channel for accommodating the sewage valve on one side of the side wall adjacent to the sewage outlet, the sewage outlet is located at the bottom of the channel, a transition port is provided in the channel, the transition port is used to connect the inner cavity of the sewage tank and the sewage outlet, and the sewage valve is blocked at least one of the transition port and the sewage outlet.

[0011] Optionally, the sewage drain valve includes a plug body and an elastic member, the elastic member is located at the top of the channel, and a sealing ring cooperating with the plug body is provided at the bottom of the channel, the plug body is used to seal the sewage outlet, and the elastic member is used to provide the plug body with elastic force to seal the sewage outlet.

[0012] Optionally, the drive assembly includes a drive motor and a transmission member connected to the output end of the drive motor, the transmission member has a first position and a second position, the drive motor drives the transmission member to switch back and forth between the first position and the second position, and when the transmission member is in the second position, the sewage valve is driven by the transmission member and opens the sewage outlet.

[0013] Optionally, the machine body is provided with a first limit switch and a second limit switch for detecting the driving stroke of the driving assembly, wherein the second limit switch is used to detect that the driving assembly drives the sewage valve to move into position.

[0014] In a second aspect, the present application provides a passive sewage station, comprising a water receiving tray, the water receiving tray is connected to a household sewer, the water receiving tray is used to receive sewage discharged from a sewage tank of the cleaning robot as described above, and introduce the sewage into the household sewer; or, the passive sewage station is arranged next to a household floor drain;

[0015] The passive sewage discharge station is also provided with a passive marker for identification and alignment when the cleaning robot returns to the station.

[0016] Compared with the prior art, the technical solution provided by the embodiments of the present application has the following advantages:

[0017] The self-draining cleaning robot provided by the present application sets a sewage tank at the rear of the body, and sets the sewage outlet on the sewage tank at the intersection of the side wall, the bottom wall and the rear wall, so that when the sewage flows out from the sewage outlet, it will not contact other components at the bottom of the body, thereby avoiding the sewage from polluting the mop, roller and other components at the bottom of the body; and the self-draining cleaning robot directly opens a sewage outlet at the bottom of the sewage tank, without the need for a pipeline to guide the sewage discharge, which can effectively avoid dirt from remaining in the sewage pipe, and can also simplify the sewage discharge structure, increase the volume of the sewage tank, and make the body structure of the cleaning robot more compact; the cleaning robot can also realize the opening and closing of the sewage tank and the sewage valve by setting a driving component on the body of the cleaning robot, and can realize sewage discharge without accurate docking with the base station, or can realize sewage discharge directly next to the household floor drain, thereby increasing the applicable scenarios of the cleaning robot and realizing the passive design of the base station. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 This is a schematic diagram of the structure of the top of the self-draining cleaning robot described in an embodiment of the present application;

[0021] Figure 2 This is a schematic diagram of the internal structure of the driving component of the self-draining cleaning robot described in an embodiment of the present application;

[0022] Figure 3 This is a schematic diagram of the structure inside the sewage tank of the self-draining cleaning robot described in an embodiment of the present application;

[0023] Figure 4 This is a schematic diagram of the structure of the self-draining cleaning robot according to an embodiment of the present application without a sewage tank;

[0024] Figure 5 This is a schematic diagram of the structure of the channel on the sewage tank of the self-draining cleaning robot described in an embodiment of the present application;

[0025] Figure 6 This is a schematic diagram of the structure of the drive assembly and the sewage valve of the self-draining cleaning robot described in the embodiment of the present application;

[0026] Figure 7A cross-sectional view of the self-draining cleaning robot at the driving assembly and the drain valve according to an embodiment of the present application;

[0027] Figure 8 A schematic diagram of the structure of a drive assembly and a sewage discharge valve of a self-draining cleaning robot according to another embodiment of the present application;

[0028] Fig. 9 This is a schematic diagram of the structure of the sewage discharge station described in the embodiment of the present application;

[0029] Fig.10 This is a schematic diagram of the structure of the self-draining cleaning robot described in an embodiment of the present application;

[0030] Fig.11 This is a schematic diagram of the structure of the clean water base station described in the embodiment of the present application;

[0031] Fig.12 This is a schematic diagram of the internal structure of the water purification base station described in the embodiment of the present application;

[0032] Fig.13 This is a schematic diagram of the structure of the passive self-driving assembly in the first state according to an embodiment of the present application;

[0033] Fig.14 This is a schematic diagram of the structure of the passive self-driving assembly in the second state according to an embodiment of the present application;

[0034] Fig.15 This is a schematic diagram of the structure of the water purification base station and the cleaning robot when they cooperate with each other as described in an embodiment of the present application.

[0035] Among them, 1. cleaning robot; 11. body; 111. head; 112. tail; 12. sewage tank; 121. sewage outlet; 122. transition port; 13. sewage valve; 131. door body; 132. plug body; 133. elastic member; 134. sealing ring; 135. transmission rod; 14. driving assembly; 141. driving motor; 142. transmission member; 1431. first limit switch; 1432. second limit switch; 15. channel; 16. Cleaning assembly; 17, clean water box; 18, water injection drive; 2, sewage station; 21, water tray; 22, sewer; 23, passive identification; 3, clean water base station; 31, clean water tank; 311, water inlet; 312, water outlet; 32, clean water docking assembly; 33, passive self-driven assembly; 331, floating block; 332, connecting rod; 333, abutment block; 334, track; 34, motion guide assembly; 341, raised structure; 35, positioning detection point. DETAILED DESCRIPTION

[0036] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present application, rather than all of the embodiments.

[0038] Based on this, the present embodiment provides a self-draining cleaning robot and a passive sewage discharge station, by setting the sewage tank at the rear of the body, and setting the sewage outlet on the sewage tank at the intersection of the side wall, bottom wall and rear wall, so that when the sewage flows out from the sewage outlet, it will not contact other components at the bottom of the body, avoiding the sewage from polluting the mop, roller and other components at the bottom of the body; and the self-draining cleaning robot directly opens a sewage outlet at the bottom of the sewage tank, without the need for a pipe to guide the sewage discharge, which can effectively avoid dirt from remaining in the sewage pipe, and can also simplify the sewage discharge structure, increase the volume of the sewage tank, and make the body structure of the cleaning robot more compact. The following is a detailed description of it through specific embodiments:

[0039] See also Figure 1 to Figure 4 , Fig.10 The present embodiment provides a self-draining cleaning robot 1, which includes a body 11 and a sewage tank 12. The sewage tank 12 is provided with a sewage outlet 121. The body 11 has a head 111 and a tail 112 along the moving direction. The sewage tank 12 is arranged at the tail 112 of the body 11. The sewage tank 12 includes side walls, a top wall, a bottom wall and a rear wall located at the tail 112. The rear wall matches the outer contour of the tail 112. The side walls, the bottom wall and the rear wall have an adjacent portion. The sewage outlet 121 is arranged on the bottom wall and is located in the adjacent portion. The body 11 is also provided with a sewage valve 13 and a driving assembly 14. The driving assembly 14 is used to drive the sewage valve 13 to move so that the liquid in the sewage tank 12 is discharged from the sewage outlet 121.

[0040] The self-draining cleaning robot 1 provided in this embodiment has a sewage tank 12 disposed at the rear portion 112 of the body 11, and a sewage outlet 121 on the sewage tank 12 disposed at the intersection of the side wall, the bottom wall and the rear wall, so that when sewage flows out from the sewage outlet 121, it will not contact other components at the bottom of the body 11, thereby preventing the sewage from contaminating the mop, roller and other components at the bottom of the body 11; and the self-draining cleaning robot 1 has a sewage discharge method by directly opening the sewage outlet 121 at the bottom of the sewage tank 12, without the need for a pipeline to guide Sewage discharge can effectively prevent dirt from remaining in the sewage pipe, and can also simplify the sewage discharge structure, increase the volume of the sewage tank 12, and make the body 11 of the cleaning robot 1 more compact; the cleaning robot 1 can also realize the opening and closing of the sewage tank 12 and the sewage valve 13 by setting a driving component 14 on the body 11 of the cleaning robot 1, and can discharge sewage without accurate docking with the base station, or can discharge sewage directly next to the household floor drain, which increases the applicable scenarios of the cleaning robot 1 and can realize the passive design of the base station. It should be noted that the "passive" in the passive design of the base station can be understood as the base station can achieve normal operation without being connected to electricity, and the same applies to the passive components below.

[0041] In some embodiments, the adjacent portion is a preset radius range extending from the vertex of the intersection of the side wall, the bottom wall and the rear wall along the bottom wall; it should be noted that the preset radius range can be within a range of radius less than or equal to 5 cm, specifically a radius of 5 cm, 4 cm, 3 cm, 2 cm, etc. It should be understood that the radius value can be either the above-mentioned integer or a real number with a decimal such as 4.5 cm, 3.4 cm, 2.23 cm; the preset radius range is determined specifically according to the volume of the body 11 of the cleaning robot 1 and the distance between the sewage outlet 121 and other components at the bottom of the body 11, thereby further reducing the probability that sewage will contaminate other components at the bottom of the body 11 when the sewage outlet 121 is discharged.

[0042] In a further embodiment, a cleaning piece is further provided at the rear portion 112 of the body 11, and the cleaning piece is arranged away from the sewage outlet 121, or there is a preset distance between the cleaning piece and the sewage outlet 121; it should be understood that the preset distance refers to the distance between the outer edge of the coverage range of the cleaning piece when it is working and the sewage outlet 121, and the preset distance is not less than 1.5 cm, and can specifically be 1.5 cm, 2 cm, 2.5 cm, 3 cm and other distances, thereby ensuring that the sewage outlet 121 will not cause pollution to the cleaning piece located at the rear portion 112 of the body 11 when performing sewage discharge, and at the same time it can also ensure that the cleaning range of the cleaning piece itself will not be greatly affected, thereby ensuring the cleaning efficiency of the cleaning robot 1 itself; specifically, the cleaning piece can be a mop, a brush, a roller brush and other structures.

[0043] In some embodiments, a transition port 122 is provided on the side wall of the sewage tank 12 adjacent to the sewage outlet 121, the transition port 122 is connected to the sewage outlet 121, and the sewage valve 13 is blocked at the transition port 122; by opening the transition port 122 connected to the sewage outlet 121 on the side wall of the sewage tank 12, and operating the sewage valve 13 to block or open the transition port 122 on the side wall of the sewage tank 12, the sewage outlet 121 can be blocked or opened. This arrangement can make the sewage outlet 121 closer to the ground, reduce the impact of sewage splashing when discharging sewage, and also facilitate the arrangement of the sewage valve 13 and the drive assembly 14. The sewage valve 13 and the drive assembly 14 are both arranged on the side of the sewage tank 12, which has a larger installation space and is not easy to interfere with other structures.

[0044] Continue to refer to Figures 3 to 5 As shown, the transition port 122 is opened near the bottom of the side wall of the sewage tank 12, specifically at the lowest point of the side wall of the sewage tank 12, so as to ensure that all the sewage in the sewage tank 12 can flow out naturally by gravity when the transition port 122 is opened.

[0045] In some embodiments, the sewage valve 13 includes a door body 131, which is hinged to the side wall of the sewage tank 12 through a rotating shaft so that the door body 131 is blocked at the transition port 122, and the driving component 14 drives the door body 131 to rotate so that the door body 131 is moved away from the transition port 122; wherein, the door body 131 is formed with a closing portion that cooperates with the transition port 122 on one side of the rotating shaft, and the closing portion is rotated around the rotating shaft to block or move away from the transition port 122, specifically, the door body 131 is formed with a connecting portion on the other side of the rotating shaft, and the driving component 14 is connected to the connecting portion, and drives the connecting portion to approach or move away from the transition port 122, so as to control the closing part to be away from or close to the transition opening 122. The distance between the connection point between the driving component 14 and the connecting part and the rotation axis can be greater than the distance between the closing part and the rotation axis, thereby forming a lever structure, amplifying the torque applied by the driving component 14 to the door body 131 to block the transition opening 122, and ensuring the sealing at the transition opening 122. It should be understood that the connecting part can be located on the same side of the rotation axis as the closing part. Specifically, the angle between the connecting part and the closing part can be an acute angle, or the connecting part can be formed around the closing part. It is only necessary to form a connection for connecting the driving component 14 around the closing part.

[0046] In a further embodiment, an elastic member 133 is provided on the connecting portion or the closing portion, and the elastic member 133 can provide an elastic force for the closing portion to seal the transition port 122. At this time, the driving component 14 can give a pushing force or a pulling force to the connecting portion so that the closing portion can overcome the elastic force of the elastic member 133 and move away from the transition port 122, thereby realizing the opening of the transition port 122; the elastic member 133 can improve the sealing effect of the closing portion on the transition port 122 through its own elastic force.

[0047] In some embodiments, the sewage tank 12 is provided with a channel 15 for accommodating the sewage valve 13 on one side of the side wall adjacent to the sewage outlet 121, the sewage outlet 121 is located at the bottom of the channel 15, and a transition port 122 is provided in the channel 15, the transition port 122 is used to connect the inner cavity of the sewage tank 12 and the sewage outlet 121, and the sewage valve 13 is blocked at least one of the transition port 122 and the sewage outlet 121; that is, the sewage valve 13 can be arranged between the transition port 122 and the sewage outlet 121, and the sewage outlet 121 and the transition port 122 A channel 15 is formed therebetween for discharging sewage. The sewage will first flow from the sewage tank 12 to the transition port 122, then flow to the sewage outlet 121 through the channel 15, and then be discharged. The sewage tank 12 can be closed by setting the sewage valve 13 in the channel 15. The transition port 122 or the sewage outlet 121 is blocked by controlling the sewage valve 13. At the same time, the channel 15 provides a storage space for the sewage valve 13, so that the sewage valve 13 can be built-in to prevent the sewage valve 13 from being contaminated by the cleaning component 16 of the cleaning robot 1.

[0048] Reference Figure 4 , Figure 6 and Figure 7 As shown, the sewage valve 13 includes a plug body 132 and an elastic member 133, the elastic member 133 is located at the top of the channel 15, and a sealing ring 134 cooperating with the plug body 132 is provided at the bottom of the channel 15, the plug body 132 is used to block the sewage outlet 121, and the elastic member 133 is used to provide the plug body 132 with elastic force to block the sewage outlet 121; wherein, the plug body 132 and the sealing ring 134 can be specifically made of rubber, plastic and the like, as long as it can ensure that the sewage valve 13 can completely close the sewage outlet 121 to prevent sewage from infiltrating and flowing out when the sewage outlet 121 is not opened; specifically, the plug body 132 can be plugged and matched with the sewage outlet 121, so that the plug body 132 itself can achieve large-area blocking of the sewage outlet 121, and the gap between the plug body 132 and the sewage outlet 121 is filled and sealed by the elastic sealing ring 134, thereby improving the sealing of the connection between the entire sewage valve 13 and the sewage outlet 121.

[0049] In some embodiments, the drive assembly 14 includes a drive motor 141 and a transmission member 142 connected to the output end of the drive motor 141, the transmission member 142 has a first position and a second position, the drive motor 141 drives the transmission member 142 to switch back and forth between the first position and the second position, when the transmission member 142 is in the second position, the sewage valve 13 is driven by the transmission member 142 and opens the sewage outlet 121; wherein the transmission member 142 may include a push rod and a gear rack mechanism, the output shaft of the drive motor 141 is used to drive the gear to rotate, the push rod is connected to the rack, and the push rod is switched back and forth between the first position and the second position by the forward and reverse rotation of the drive motor 141. Specifically, the drive motor 141 may be a linear motor, and the push rod is directly disposed on the output shaft of the drive motor 141, and the axial reciprocating motion of the output shaft of the drive motor 141 is utilized to drive the push rod to switch back and forth between the first position and the second position; in other embodiments, the push rod may be directly disposed on the output shaft of the drive motor 141 whose output shaft is a rotational motion, one end of the push rod is connected to the output shaft of the drive motor 141, and the other end extends outward radially along the output shaft of the drive motor 141, and is converted into a swinging motion of the push rod through the rotation of the output shaft of the drive motor 141, thereby utilizing the swinging motion to complete the switching between the first position and the second position.

[0050] In a further embodiment, a first limit switch 1431 and a second limit switch 1432 for detecting the driving stroke of the driving component 14 are provided on the body 11, wherein the second limit switch 1432 is used to detect that the driving component 14 drives the sewage valve 13 to move into position; the first limit switch 1431 can be used to detect that the driving component 14 completely leaves the sewage valve 13 or detects that the driving component 14 moves to a position where no pressure is applied to the sewage valve 13, thereby enabling the first limit switch 1431 to be set.

[0051] In other embodiments, specific reference is made to Figure 8As shown, the sewage valve 13 may include a plug body 132 and an elastic member 133. The transition port 122 at the bottom of the side wall of the sewage tank 12 is connected to the sewage outlet 121. The plug body 132 uses the elastic force of the elastic member 133 to block the transition port 122 and / or the sewage outlet 121. Specifically, the plug body 132 can reciprocate in the direction of approaching or moving away from the sewage outlet 121 through a transmission rod 135. The peripheral side of the sewage outlet 121 is provided with a sealing ring 134 for elastically squeezing with the plug body 132 to achieve a sealing effect. The transmission rod 135 can be connected to the driving assembly 14, and the driving motor 1 The output shaft of 41 drives a sliding member to reciprocate through the transmission member 142. The movement direction of the sliding member is parallel to the movement direction of the transmission rod 135. The sliding member is provided with a clamping member for pulling the transmission rod 135 to move away from the sewage outlet 121. The clamping member can cooperate with the transmission rod 135 in a single direction, that is, it is sufficient to pull the transmission rod 135 away from the sewage outlet 121. When the transmission member 142 drives the clamping member to move toward the sewage outlet 121, the transmission rod 135 can use the elastic member 133 to push the elastic force of the plug body 132, and move toward the sewage outlet 121 together.

[0052] Furthermore, the first limit switch 1431 and the second limit switch 1432 can be set at two positions of the transmission member 142 or the clamping member when the transmission rod 135 is pulled to open the sewage outlet 121 and when the plug body 132 blocks the sewage outlet 121 respectively.

[0053] In some embodiments, specific reference is made to Fig.11 and Fig.15 As shown, the cleaning robot 1 also includes a clean water box 17, and the clean water stored in the clean water box 17 is used for ground cleaning and self-cleaning. After the cleaning robot 1 moves to the clean water base station and the water outlet 312 of the clean water base station is docked with the clean water box 17, the clean water in the clean water base station can be directly injected into the clean water box 17, so that the cleaning robot 1 can perform ground cleaning or self-cleaning. Specifically, a water level monitoring component is provided in the clean water box 17 to monitor whether the amount of clean water in the clean water box 17 meets the requirement. When the amount of clean water in the clean water box 17 meets the requirement, the water outlet 312 of the clean water base station is closed, and the cleaning robot 1 drives away from the clean water base station to perform ground cleaning or self-cleaning.

[0054] In a further embodiment, a water injection drive 18 may be provided on the cleaning robot 1. The water injection drive 18 is used to drive the water outlet 312 of the clean water base station to open after the clean water box 17 of the cleaning robot 1 is docked with the water outlet 312 of the clean water base station, and allow clean water to flow into the clean water box 17; through the setting of the water injection drive 18, a driving force for opening the water outlet 312 of the clean water base station can be provided, that is, the clean water base station does not need to provide additional driving force for the opening and closing of the water outlet 312. At this time, the water outlet 312 of the clean water base station can be provided with a valve, baffle, etc., which is a structure that is normally closed in the absence of external force, so as to cooperate with the water injection drive 18.

[0055] Specifically, the water injection drive 18 can be a device such as an air pump, a telescopic mechanism, etc. that can provide driving force for opening the water outlet 312 of the clean water base station. When the water injection drive 18 is an air pump, the water injection drive 18 can be connected to the clean water box 17. After the clean water box 17 is connected to the water outlet 312 of the clean water base station, the water injection drive 18 is used to extract the air in the clean water box 17 to form a negative pressure, thereby opening the water outlet 312 of the clean water base station, so that the water outlet 312 in the clean water base station flows to the clean water box 17; when the water injection drive 18 is a telescopic mechanism driven by a motor, after the clean water box 17 is connected to the water outlet 312 of the clean water base station, the baffle and other blocking structures at the water outlet 312 of the clean water base station are pushed away, so that the clean water in the clean water base station flows to the clean water box 17.

[0056] It should be understood that the clean water base station may include a clean water tank 31, the water inlet 311 of the clean water tank 31 is connected to an external water source, and the external water source may specifically be a water source such as a tap water pipe that can spontaneously discharge water. The water outlet 312 of the clean water base station is provided on the clean water tank 31, and may specifically be provided at the bottom of the clean water tank 31 or on the side wall near the bottom; the water outlet 312 of the clean water tank 31 may specifically be docked with the clean water box 17 of the cleaning robot 1 through a clean water docking assembly 32, and the clean water docking assembly 32 may be a pipeline structure. When the cleaning robot 1 moves into place, one end of the clean water docking assembly 32 is connected to the water outlet 312 of the clean water base station, and the other end is connected to the clean water box 17, to ensure that clean water will not be sprayed to the outside.

[0057] In some embodiments, the preset requirement for the amount of clean water in the clean water tank 31 is greater than the maximum clean water storage capacity of the cleaning robot 1, and the highest point of the water surface in the clean water tank 31 has a certain distance from the top cover of the clean water tank 31; for example, the maximum clean water storage capacity of the clean water box 17 is 280ml, and the water consumption of the cleaning robot 1 for self-cleaning is 220ml. At this time, the preset requirement for the amount of clean water in the clean water tank 31 should not be less than 500ml, thereby ensuring that one water filling operation in the clean water tank 31 can complete the self-cleaning of the cleaning robot 1 and the total water consumption for cleaning the floor.

[0058] It should be noted that the clean water docking assembly 32 may include a normally closed mechanism for closing the water outlet 312 under normal circumstances. When the cleaning robot 1 moves to the designated position of the clean water base station 3, the water injection drive 18 is connected to the normally closed mechanism and is used to drive the normally closed mechanism to open the water outlet 312, so that the clean water in the clean water tank 31 flows into the clean water box 17.

[0059] Among them, a passive self-driven component 33 may be provided in the clean water tank 31. When the amount of clean water in the clean water tank 31 meets the preset requirements, the passive self-driven component 33 uses the buoyancy of the clean water in the clean water tank 31 to close the water inlet 311; specifically, the passive self-driven component 33 includes a float component, and the float component can adapt to the change of the water level of the clean water tank 31 and move by itself, so that the float component includes a first state and a second state, wherein in the first state, the float component closes the water inlet 311, so that clean water cannot flow into the clean water tank 31 from the external water source. ; In the second state, the float assembly opens the water inlet 311, so that clean water can automatically flow into the clean water tank 31 from the external water source; in this way, the clean water base station can be completely free of power source, and only the buoyancy of the clean water in the clean water tank 31 can be used to control the water inlet, and the water injection drive 18 on the cleaning robot 1 and the water outlet 312 can be used to control the water outlet, thereby effectively achieving energy saving and environmental protection. At the same time, this control method is more reliable, avoiding the failure of electronic components and causing safety accidents of the clean water base station itself.

[0060] In some embodiments, the float assembly includes a floating block 331, wherein the floating block 331 can float up and down to adapt to the change in the water level of the clean water tank 31, so that the floating block 331 can close or open the water inlet 311; at this time, the simple floating block 331 structure can be used to utilize the change in water level and the buoyancy of water to control the opening and closing of the water inlet 311 of the clean water tank 31.

[0061] It should be understood that when the float assembly switches from the second state to the first state, clean water flows into the clean water tank 31 from the external water source through the water inlet 311, so that the water level of the clean water tank 31 has an upward trend; when the float assembly switches from the first state to the second state, the clean water in the clean water tank 31 is injected into the cleaning robot 1 through the clean water docking assembly 32, so that the water level of the clean water tank 31 has a downward trend.

[0062] Continue to refer to Figure 12 to Figure 14As shown, a track 334 for limiting the horizontal movement of the floating block 331 may be provided in the clean water tank 31, the track 334 extends in the height direction, and the floating block 331 floats up and down along the extension direction of the track 334, wherein the water inlet 311 is located in the track 334. By setting the track 334, it can be ensured that the floating block 331 can accurately block the water inlet 311 when following the rise of the water surface, and will not shake in the horizontal direction, thereby affecting the sealing effect of the water inlet 311.

[0063] The first and second ends of the connecting rods 332 and 333 are connected to the upper and lower ends of the connecting rods 332, and the upper and lower ends of the connecting rods 332 are connected to the upper and lower ends of the connecting rods 332. The distance between the first end and the rotating part is greater than the distance between the second end and the rotating part. When the float assembly switches from the second state to the first state, the floating block 331 floats up with the rise of the water level in the clean water tank 31, so that the abutment block 333 descends with the rise of the water level in the clean water tank 31 until the abutment block 333 abuts against the water inlet 311. When the float assembly switches from the first state to the second state, the floating block 331 descends with the drop of the water level in the clean water tank 31, so that the abutment block 333 rises with the drop of the water level in the clean water tank 31 until the abutment block 333 is separated from the water inlet 311.

[0064] That is to say, by utilizing the arrangement of the floating block 331 , the abutment block 333 and the connecting rod 332 , the buoyancy of water can be amplified through the lever principle, thereby increasing the sealing pressure of the abutment block 333 on the water inlet 311 and ensuring the reliability of the abutment block 333 in sealing the water inlet 311 .

[0065] In some embodiments, the clean water base station may further include a motion guide component 34, which is used to guide the cleaning robot 1 when it is preparing to dock with the clean water base station to collect water, so that the cleaning robot 1 is adjusted to move directly toward the clean water docking component 32 before it is fully docked with the clean water base station; specifically, the motion guide component 34 may include a protruding structure 341 arranged on the clean water base station and extending out from the docking position of the cleaning robot 1, and a groove structure arranged on the cleaning robot 1 and matching the protruding structure 341, thereby achieving a guiding effect before the cleaning robot 1 is fully docked with the clean water docking component 32.

[0066] In some embodiments, the clean water base station also includes a positioning detection point 35, which is used for the cleaning robot 1 to detect whether it has moved into position; when the cleaning robot 1 has moved into position, that is, when the clean water box 17 is fully docked with the clean water docking assembly 32, the sensor on the cleaning robot 1 can detect the corresponding positioning detection point 35, and then open the water outlet 312 of the clean water base station to discharge water. This setting can avoid the situation where the water outlet 312 is opened by the water injection drive 18 before the cleaning robot 1 is fully docked with the clean water docking assembly 32, thereby causing pollution to the clean water base station and the cleaning robot 1 itself; the positioning detection point 35 can also be used to provide route guidance for the cleaning robot 1, thereby further improving the efficiency of the docking of the cleaning robot 1 with the clean water base station.

[0067] It should be noted that the cleaning robot 1 may also include a drying module, a charging module, a dust collection module, and a sewage discharge module, which respectively correspond to the drying base station, the charging base station, the dust collection base station, and the sewage discharge station 2 separated from the clean water base station.

[0068] In some embodiments, the cleaning robot 1 further includes a self-cleaning module, which is used to perform self-cleaning when the cleaning robot 1 is located at a station to be cleaned or when the cleaning robot 1 is docked with the clean water docking assembly 32 .

[0069] On the second aspect, the present application provides a passive sewage discharge station 2, including a water receiving tray 21, which is connected to a household sewer 22. The water receiving tray 21 is used to receive sewage discharged from the sewage tank 12 of the cleaning robot 1 as above, and introduce the sewage into the household sewer 22; or, the passive sewage discharge station 2 is arranged next to the household floor drain; the passive sewage discharge station 2 is also provided with a passive identification 23, which is used for identification and alignment when the cleaning robot 1 returns to the station; specifically, the passive identification 23 can achieve similar functions as the positioning detection point 35 of the above-mentioned clean water base station, that is, when the cleaning robot 1 enters the passive sewage discharge station 2 and moves into place, the sensor on the cleaning robot 1 detects the passive identification 23 and performs sewage discharge action; the passive identification 23 can also be used to guide the route of the cleaning robot 1, further improving the efficiency of the docking of the cleaning robot 1 with the passive sewage discharge station 2.

[0070] The specific implementation method and implementation principle are the same as those in the above embodiment, and can bring the same or similar technical effects, which will not be described one by one here. For details, please refer to the description of the above self-draining cleaning robot embodiment.

[0071] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0072] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A self-draining cleaning robot, comprising a body and a sewage tank, the sewage tank being provided with a sewage outlet, the body having a head and a tail along the moving direction, the sewage tank being provided at the tail of the body, the sewage tank comprising a side wall, a top wall, a bottom wall and a rear wall located at the tail, the rear wall matching the outer contour of the tail, characterized in that: The side wall, the bottom wall and the rear wall have an adjacent portion, the sewage outlet is arranged on the bottom wall and is located in the adjacent portion; the machine body is also provided with a sewage valve and a driving component, the driving component is used to drive the sewage valve to move so that the liquid in the sewage tank is discharged from the sewage outlet.

2. The self-draining cleaning robot according to claim 1, characterized in that: The intersection portion is a preset radius range extending from the intersection vertex of the side wall, the bottom wall and the rear wall along the bottom wall.

3. The self-draining cleaning robot according to claim 1, characterized in that: A cleaning member is also provided at the tail of the machine body. The cleaning member is arranged far away from the sewage outlet, or a preset distance is provided between the cleaning member and the sewage outlet.

4. The self-draining cleaning robot according to claim 1, characterized in that: The sewage tank is provided with a transition port on the side wall adjacent to the sewage outlet, the transition port is communicated with the sewage outlet, and the sewage outlet valve is blocked at the transition port.

5. The self-draining cleaning robot according to claim 4, characterized in that: The sewage valve comprises a door body, which is hinged to the side wall of the sewage tank through a rotating shaft so that the door body is blocked at the transition port, and the driving assembly drives the door body to rotate so that the door body is moved away from the transition port.

6. The self-draining cleaning robot according to claim 1, characterized in that: The sewage tank is provided with a channel for accommodating the sewage valve on one side of the side wall adjacent to the sewage outlet. The sewage outlet is located at the bottom of the channel. A transition port is provided in the channel. The transition port is used to connect the inner cavity of the sewage tank and the sewage outlet. The sewage valve is blocked at least one of the transition port and the sewage outlet.

7. The self-draining cleaning robot according to claim 6, characterized in that: The sewage discharge valve includes a plug body and an elastic member, wherein the elastic member is located at the top of the channel, and a sealing ring cooperating with the plug body is provided at the bottom of the channel. The plug body is used to seal the sewage discharge port, and the elastic member is used to provide the plug body with elastic force to seal the sewage discharge port.

8. The self-draining cleaning robot according to claim 1, characterized in that: The driving assembly includes a driving motor and a transmission member connected to the output end of the driving motor, the transmission member has a first position and a second position, the driving motor drives the transmission member to switch back and forth between the first position and the second position, and when the transmission member is in the second position, the sewage valve is driven by the transmission member and opens the sewage outlet.

9. The self-draining cleaning robot according to claim 1, characterized in that: The machine body is provided with a first limit switch and a second limit switch for detecting the driving stroke of the driving component, wherein the second limit switch is used to detect that the driving component drives the sewage valve to move into position.

10. A passive sewage discharge station, characterized in that: A water receiving tray is included, the water receiving tray is connected to a household sewer, the water receiving tray is used to receive sewage discharged from a sewage tank of the cleaning robot according to any one of claims 1 to 9, and introduce the sewage into the household sewer; or, the passive sewage discharge station is arranged next to a household floor drain; The passive sewage discharge station is also provided with a passive marker for identification and alignment when the cleaning robot returns to the station.

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