US20220280012A1 - Cleaning device - Google Patents

Cleaning device Download PDF

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Publication number
US20220280012A1
US20220280012A1 US17/625,082 US202017625082A US2022280012A1 US 20220280012 A1 US20220280012 A1 US 20220280012A1 US 202017625082 A US202017625082 A US 202017625082A US 2022280012 A1 US2022280012 A1 US 2022280012A1
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United States
Prior art keywords
water
cleaning device
cleaning
execution mechanism
accommodating portion
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Pending
Application number
US17/625,082
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English (en)
Inventor
Meng Zhang
Xianmin WEI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Robozone Technology Co Ltd
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Midea Robozone Technology Co Ltd
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Filing date
Publication date
Application filed by Midea Robozone Technology Co Ltd filed Critical Midea Robozone Technology Co Ltd
Assigned to Midea Robozone Technology Co., Ltd. reassignment Midea Robozone Technology Co., Ltd. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEI, Xianmin, ZHANG, MENG
Publication of US20220280012A1 publication Critical patent/US20220280012A1/en
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/408—Means for supplying cleaning or surface treating agents
    • A47L11/4088—Supply pumps; Spraying devices; Supply conduits
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/28—Floor-scrubbing machines, motor-driven
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/28—Floor-scrubbing machines, motor-driven
    • A47L11/282—Floor-scrubbing machines, motor-driven having rotary tools
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4041—Roll shaped surface treating tools
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4072—Arrangement of castors or wheels
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/408—Means for supplying cleaning or surface treating agents
    • A47L11/4083—Liquid supply reservoirs; Preparation of the agents, e.g. mixing devices
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0461—Dust-loosening tools, e.g. agitators, brushes
    • A47L9/0488—Combinations or arrangements of several tools, e.g. edge cleaning tools
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2201/00—Robotic cleaning machines, i.e. with automatic control of the travelling movement or the cleaning operation

Definitions

  • the present application relates to the field of cleaning technology, and in particular to a cleaning device.
  • a floor cleaning robot is taken as an example.
  • the floor cleaning robot is provided with a water tank and a water pump.
  • a cleaning cloth is installed at the bottom of the floor cleaning robot, a water inlet pipe of the water pump is connected to the water tank, and a drain pipe of the water pump is connected to the cleaning cloth.
  • water or cleaning agent in the water tank is pumped to the cleaning cloth by means of the water pump, supplying water to the cleaning cloth.
  • the supply amount of water to the cleaning cloth is determined by the displacement and the working time of the water pump.
  • the water pump has relatively low reliability under different temperature and humidity condition, which may reduce the working reliability of the floor cleaning robot and affect user experience.
  • embodiments of the present application desire to provide a cleaning device having high cleaning reliability.
  • an embodiment of the present application provides a cleaning device, including a water pumping device, a cleaning area and an execution mechanism.
  • the water pumping device includes an accommodating portion and a transitional connecting mechanism.
  • An accommodating space and a water outlet in communication with the accommodating space are formed in the accommodating portion, and the water outlet is also in communication with the cleaning area.
  • the transitional connecting mechanism is connected to the execution mechanism and configured to be driven by the execution mechanism, and the transitional connecting mechanism may configured to pump water in the accommodating space to the cleaning area under the drive of the execution mechanism.
  • the execution mechanism includes at least one of a traveling wheel and a roller brush.
  • the water pumping device includes a water pumping portion, the transitional connecting mechanism is connected between the execution mechanism and the water pumping portion; the water pumping portion is movably arranged in the accommodating space, the accommodating portion and the water pumping portion jointly define a water reservoir cavity, and the water pumping portion is configured to pump water in the water reservoir cavity to the cleaning area.
  • the accommodating portion is cylindrical
  • the water pumping portion is a piston
  • the piston reciprocates linearly in the accommodating portion.
  • the transitional connecting mechanism is a crank, a first end of the crank is connected to a side of the piston facing away from the water reservoir cavity, a second end of the crank is rotatably connected to the execution mechanism, the execution mechanism has a first rotation axis, a second end of the crank has a second rotation axis, the first rotation axis and the second rotation axis are eccentric with respect to one another, and the execution mechanism drives the piston to reciprocate linearly by means of the crank.
  • the transitional connecting mechanism includes a cam, a sliding rod and an elastic member, one end of the sliding rod is rotatably connected to the piston, and the elastic member applies a force toward the cam on the sliding rod to press the other end of the sliding rod against a circumferential surface of the cam, the execution mechanism has the first rotation axis, the cam is coaxially and fixedly connected to the execution mechanism, and the execution mechanism drives the piston by means of the cam and the sliding rod to reciprocate linearly.
  • the accommodating portion is in a volute shape
  • the water pumping portion is a rotor
  • the rotor rotates in the accommodating portion
  • the rotor pumps the water in the water reservoir cavity to the cleaning area during rotation.
  • the execution mechanism has the first rotation axis
  • the rotor has a third rotation axis
  • the first rotation axis and the third rotation axis are parallel to but eccentric with respect one another
  • the transitional connecting mechanism is configured to transmit torque of the execution mechanism to the rotor.
  • the transitional connecting mechanism is a conveyor belt or a gear structure.
  • the cleaning device includes a water tank, the accommodating portion is formed to be at least a part of the water tank, and the water pumping portion is located in the water tank.
  • the cleaning device includes a water tank, the accommodating portion is located outside the water tank, the accommodating portion is provided with a water inlet that is in communication with the water reservoir cavity, and in communication with the water tank.
  • the water pumping device includes a first check valve, and the first check valve is arranged in a waterway between the water inlet and the water tank; and/or the water pumping device includes a second check valve, and the second check valve is arranged in a waterway between the water outlet and the cleaning area.
  • the accommodating portion is cylindrical in shape
  • the water pumping portion is a piston
  • the piston reciprocates linearly in the accommodating portion
  • the piston alternately introduces the water in the water tank into a water supply cavity and pumps the water in the water reservoir cavity into the cleaning area.
  • the water inlet and the water outlet are arranged at an end of the accommodating portion in a sliding direction of the piston.
  • the execution mechanism is a traveling wheel
  • the transitional connecting mechanism is connected to a side of the traveling wheel in an axial direction.
  • the transitional connecting mechanism is connected to an axial inner side of the traveling wheel.
  • the cleaning device is a floor cleaning robot or a window cleaning robot.
  • the cleaning device of the embodiments of the present application uses the existing execution mechanism as a power source, to allow a water pumping operation by means of the transitional connecting mechanism, that is, the embodiments of the present application use a mechanical manner to drive the water pumping action.
  • the supply amount of water desired by the cleaning area is determined by the action of the execution mechanism and the volume of the accommodating space for storing water, without using a control circuit.
  • the water pumping device of the embodiments of the present application has high structural reliability and practicability, and low fabrication costs, which is conducive to popularization and use.
  • FIG. 1 is a partial schematic view of a cleaning device of an embodiment of the present application, in which a first rotation axis is reducible to point O 1 , and a second rotation axis is reducible to point O 2 .
  • FIG. 2 is a schematic view of a water pumping device and a traveling wheel of an embodiment of the present application.
  • FIG. 3 is a schematic view of a water pumping device and a traveling wheel of another embodiment of the present application, in which a first rotation axis is reducible to point O 1 .
  • the embodiments of the present application provide a cleaning device, which may be configured to clean items to be cleaned such as floor, glass and the like, and when the cleaning device works, the cleaning device is placed on a surface of the cleaning media.
  • the cleaning device may be a floor cleaning robot, a window cleaning robot, or may be a similar type of device, which is not limited herein.
  • a floor cleaning robot is taken as an example of the cleaning device.
  • a cleaning device includes a water pumping device 30 , a cleaning area 10 a and an execution mechanism 20 .
  • the water pumping device 30 includes an accommodating portion 31 and a transitional connecting mechanism 33 .
  • An accommodating space 310 and a water outlet 30 b in communication with the accommodating space 310 are formed in the accommodating portion 31 , and the water outlet 30 b is in communication with the cleaning area 10 a, for example, by means of a water outlet pipe 37 .
  • the transitional connecting mechanism 33 is in connection with the execution mechanism 20 , and the transitional connecting mechanism 33 may pump water in the accommodating space 310 to the cleaning area 10 a under the drive of the execution mechanism 20 .
  • the cleaning device of the embodiments of the present application uses the existing execution mechanism 20 as a power source, to allow a water pumping operation by means of the transitional connecting mechanism 33 .
  • the supply amount of water desired by the cleaning area 10 a is determined by the action of the execution mechanism 20 and the volume of the accommodating space 310 for storing water, without using a control circuit.
  • the water pumping device 30 of the embodiments of the present application has high structural reliability and practicability, and low fabrication costs, which is conducive to popularization and use.
  • the execution mechanism 20 refers to an external execution mechanism for realizing the cleaning function of the cleaning device, for example, a traveling wheel 20 ′ or a roller brush.
  • the traveling wheel 20 ′ executes the traveling function of the cleaning device, the cleaning device may realize continuous cleaning work by traveling of the traveling wheel 20 ′; and the roller brush may allow the cleaning device to wipe and clean the items.
  • the cleaning area 10 a refers to the area configured to contact the cleaning member 40 .
  • the cleaning member 40 may be cleaning cloth, sponge, etc.
  • the cleaning area 10 a may be the bottom of a bracket 12 for installing the cleaning member 40 .
  • the cleaning member 40 is installed at the bottom of the bracket 12 , the water in the accommodating space 310 is pumped to the cleaning area 10 a , and the water pumped to the cleaning area 10 a is absorbed by the cleaning member 40 . Then, during the traveling process of the cleaning device, the cleaning member 40 wipes and cleans the items to be cleaned.
  • the transitional connecting mechanism 33 may pump the water in the accommodating space 310 to the cleaning area 10 a by an additional structure, or may pump the water in the accommodating space 310 to the cleaning area 10 a without additional structure.
  • the transitional connecting mechanism 33 is driven by the execution mechanism 20 to continuously pump air or other gas to the accommodating space 310 unidirectionally, and the water is the accommodating space 310 is pumped to the cleaning area 10 a under air pressure.
  • the transitional connecting mechanism 33 pumps the water in the accommodating space 310 to the cleaning area 10 a by the additional structure.
  • the water pumping device 30 includes a water pumping portion 32 movably arranged in the accommodating space 310 .
  • the water pumping portion 32 and the accommodating portion 31 together define a water reservoir cavity 311 .
  • the water pumping portion 32 can pump the water in the water reservoir cavity 311 to the cleaning area 10 a, that is, the transitional connecting mechanism 33 pumps the water in the accommodating space 310 to the cleaning area 10 a by the water pumping portion 32 .
  • the power is transmitted to the water pumping portion 32 by means of the transitional connecting mechanism 33 , and then the Water pumping portion 32 is driven to perform drainage operation.
  • a greater pressure may be directly applied to the water in the water reservoir cavity 311 , and the water in the water reservoir cavity 311 may be reliably pumped to the cleaning area 10 a.
  • the cleaning device includes a water tank 11 , in which a volume of water or cleaning liquid is pre-stored.
  • the accommodating portion 31 may be at least a part of the structure of the water tank 11 .
  • a part of the space in the water tank 11 is isolated to form the accommodating space of the accommodating portion 31 , and the pre-stored water in the water tank 11 enters into the water reservoir cavity 311 through a through-hole with a diameter.
  • the water tank 11 itself is the accommodating portion 31 , and the space in the water tank 11 is the above-accommodating space 311 .
  • the accommodating portion 31 is located outside the water tank 11 , the accommodating portion 31 is provided with a water inlet 31 a in communication with the water reservoir cavity 311 .
  • the water inlet 31 a is in communication with the water tank 11 .
  • the accommodating portion 31 may be fixedly connected to the water tank 11 , or may be spaced apart from the water tank 11 , which is not limited herein.
  • the accommodating portion 31 is arranged on the outer side of the water tank 11 , and, on the one hand, the water tank 11 is able to have a large volume in the limited space of the cleaning device and the water storage capacity is improved, on the other hand, relative positions between the water tank 11 , the cleaning area 10 a and the accommodating portion 31 may be flexibly arranged as long as the water tank, the cleaning area and the accommodating portion are in communication with one another by corresponding pipelines, and the structural design of the cleaning device can be more flexible, and the structural layout of the cleaning device can be more reasonable and compact.
  • the execution mechanism 20 is a traveling wheel 20 ′, and the transitional connecting mechanism 33 is connected to the traveling wheel 20 ′.
  • the rotation of the traveling wheel 20 ′ is associated with the travel distance of the cleaning device, and the movement amplitude of the water pumping portion 32 is associated with the travel distance of the cleaning device.
  • the traveling wheel 20 ′ is stationary, the transitional connecting mechanism 33 remains stationary, and thus the water pumping portion 32 does not move.
  • the cleaning member 40 does not perform wiping and cleaning work, and the water pumping device 30 does not output water to the cleaning area 10 a.
  • the cleaning device When the cleaning device travels a short distance, the rotation amplitude of the traveling wheel 20 ′ is small, and the movement distance of the water pumping portion 32 is also short, so the amount of outputted water pumped by the water pumping device 30 to the cleaning area 10 a is also relatively small. In the case that the cleaning device travels a short distance, the supply amount of water desired by the cleaning member 40 is also small, and the amount of water outputted by the water pumping device 30 to the cleaning member 40 can be better matched with the supply amount of water desired by the cleaning member 40 . Similarly, when the cleaning device travels a large distance, the amount of outputted water pumped by the water pumping device 30 to the cleaning area 10 a is large, and the supply amount of water desired by the cleaning member 40 is also large.
  • the transitional connecting mechanism 33 is connected to a side of the traveling wheel 20 ′ in its axial direction, which facilitates the connection between the transitional connecting mechanism 33 and the traveling wheel 20 . Further, the transitional connecting mechanism 33 is connected to an axial inner side of the traveling wheel 20 ′, and the transitional connecting mechanism 33 will not be exposed to the outer side of the cleaning device. In the working process of the cleaning device, the transitional connecting mechanism 33 will not interfere with other objects in the external environment. Moreover, the layout of the water pumping device 30 is more reasonable and compact.
  • the accommodating portion 31 and the water pumping portion 32 may be in various forms.
  • the accommodating portion is cylindrical, and correspondingly, the water pumping portion 32 is a piston 32 ′.
  • the accommodating portion 31 is volute, and the water pumping portion 32 is a rotor.
  • Relative positions of the water tank 11 , the execution mechanism 20 , the transitional connecting mechanism 33 , and the cleaning area 10 a may be appropriately changed as required.
  • the accommodating portion 31 is located outside the water tank 11 .
  • the accommodating portion 31 is cylindrical, one end of the accommodating portion 31 is a closed end, and the other end is an open end.
  • the water pumping portion 32 is a piston 32 ′, and the piston 32 ′ reciprocates linearly in the accommodating portion 31 , and the piston 32 ′ alternately introduces the water in the water tank 11 into the water reservoir cavity 311 and then pumps the water in the water reservoir cavity 311 to the cleaning area 10 a. That is to say, at the same time, the operation of introducing the water in the water tank 11 into the water reservoir cavity 311 and the operation of pumping the water in the water reservoir cavity 311 to the cleaning area 10 a cannot be performed simultaneously.
  • the transitional connecting mechanism 33 drives the piston 32 ′ to slide along a first direction (towards left side in FIG. 1 )
  • the volume of the water reservoir cavity 311 is increased, resulting in that a negative pressure is formed in the water reservoir cavity 311 .
  • the water in the water tank 11 is sucked into the water reservoir cavity 311 under the negative pressure.
  • a waterway between the water outlet 30 b and the cleaning area 10 a is in a cut-off state.
  • the transitional connecting mechanism 33 drives the piston 32 ′ to slide along a second direction (towards right side in FIG.
  • the piston 32 ′ exerts a force onto the water in the water reservoir cavity 311 , and a water pressure suffice to pump the water to the cleaning area 10 a is generated in the water in the water reservoir cavity 311 .
  • the waterway between the water inlet 31 a and the water tank 11 is in a cut-off state.
  • valves may be arranged in the corresponding waterways to open or close them in time.
  • the structure type of the valve is not limited, which may be an electric control valve, a hydraulic control valve and the like.
  • the water pumping device 30 includes a first check valve 34
  • the first check valve 34 is a hydraulic control valve, that is, it may be opened and closed without electromagnetic control.
  • the first check valve 34 is arranged in the waterway between the water inlet 31 a and the water tank 11 . It should be understood that the first check valve 34 can allow water to flow unidirectionally from the side of the water tank 11 to the side of the water inlet 31 a, that is, a liquid inlet end of the first check valve 34 is in communication with the water tank 11 , and a liquid outlet end of the first check valve 34 is in communication with the water inlet 31 a.
  • the first check valve 34 is simple in structure, does not require electric control, and can be automatically opened and closed according to water pressure.
  • the first check valve 34 when the negative pressure in the water containing chamber 311 is greater than an opening pressure of the first check valve 34 , the first check valve 34 is opened, and the water in the water tank 11 enters into the water reservoir cavity 311 through the first check valve 34 under the negative pressure of the water reservoir cavity 311 .
  • the water pressure When a water pressure is generated in the water in the water reservoir cavity 311 , the water pressure reversely acts on the first check valve 34 , then the first check valve 34 is closed.
  • the water pressure in the water tank 11 is insufficient to open the first check valve 34 , and therefore, the first check valve 34 can stably and reliably and automatically stay in a cut-off state.
  • the water pumping device 30 includes a second check valve 35 , which is arranged in a waterway between the water outlet 30 b and the cleaning area 10 a.
  • the action principle and working process of the second check valve 35 are similar to those of the first check valve 34 , and details will not be repeated here.
  • valves may be selected according to requirement.
  • the above-mentioned second check valve 35 may be arranged in the waterway between the water outlet 30 b and the cleaning area 10 a, and an electric control valve or hydraulic control valve of other type is arranged in the waterway between the water inlet 31 a and the water tank 11 .
  • the above-mentioned first check valve 34 may be arranged in the waterway between the water inlet 31 a and the water tank 11 , while an electric control valve or electric control valve of other type is arranged in the waterway between the water outlet 30 b and the cleaning area 10 a.
  • the water outlet 30 b is taken as an example. If the water outlet 30 b is located on a sidewall of the accommodating portion 31 , that is, a position at a non-closed end. When the piston 32 ′ moves toward the closed end, if the piston 32 ′ moves to block the water outlet 30 b by a periphery of the piston 32 ′, the water in the water reservoir cavity 311 cannot be discharged. Then, if the piston 32 ′ is driven by the transitional connecting mechanism 33 to continue moving toward the closed end, the water in the water reservoir cavity 311 is compressed, the water pressure continues to rise, this may damage the piston 32 ′, the accommodating portion 31 , or the above-mentioned valve. Therefore, the device should be designed in such a way that the movement amplitude of the piston 32 ′ cannot reach the water outlet 30 b, but this will result in an increase in the size of the accommodating portion 31 in the movement direction of the piston 32 ′ under the same conditions.
  • the water inlet 31 a and the water outlet 30 b are arranged at the end of the accommodating portion 31 in a sliding direction of the piston 32 ′, that is, arranged at the closed end of the accommodating portion 31 , and the piston 32 ′ can keep moving to a position in contact with the closed end, can make the structure of the accommodating portion 31 more compact under the same conditions, and can also prevent the water in water reservoir cavity 311 from being unduly compressed.
  • the transitional connecting mechanism 33 is a crank 33 ′.
  • one end of the crank 33 ′ is connected to one side of the piston 32 ′ facing away from the water reservoir cavity 311 , and the other end of the crank 33 ′ is rotatably connected to the execution mechanism 20 .
  • the execution mechanism 20 has a first rotation axis (referring to 01 in FIG. 1 ), that is, the execution mechanism 20 is rotatable about the first rotation axis.
  • the second end of the crank 33 ′ has a second rotation axis (referring to point 02 in FIG.
  • the first rotation axis and the second rotation axis are eccentric with respect to one another, that is, when the crank 33 ′ rotates with the rotation of the execution mechanism 20 , it revolves around the first rotation axis and rotates about the second rotation axis.
  • the execution mechanism 20 drives the piston 32 ′ by means of the crank 33 ′ to reciprocate linearly, that is to say, the execution mechanism 20 , the crank 33 ′ and the piston 32 ′ form a slider-crank structure, and the crank 33 ′ can convert the rotational movement of the execution mechanism 20 into a linear sliding movement of the piston 32 ′.
  • the execution mechanism 20 is a traveling wheel 20 ′. It should be understood that the execution mechanism 20 may also be a roller brush or execution mechanism 20 of other type.
  • the transitional connecting mechanism 33 includes a cam 331 , a sliding rod 332 and an elastic member 333 .
  • One end of the sliding rod 332 is rotatably connected (for example, hinged) with the piston 32 ′.
  • the elastic member 333 applies a force toward the cam 331 on the sliding rod 332 to press the other end of the sliding rod 332 against a circumferential surface of the cam 331 .
  • the execution mechanism 20 has a first rotation axis, the cam 331 is coaxially and fixedly connected to the execution mechanism 20 . That is, the execution mechanism 20 rotates about the first rotation axis, and the cam 331 also rotates about the first rotation axis.
  • the sliding rod 332 reciprocates linearly under the combined action of the elastic member 333 and the cam 331 when the cam 331 spins about the first rotation axis, driving the piston 32 ′ to reciprocate linearly.
  • the elastic member 333 is a spring mounted around the sliding rod 332 .
  • the sliding rod 332 guides the telescopic movement of the spring, to improve the reliability of the spring.
  • One end of the spring abuts against a side of the piston 32 ′ facing away from the water reservoir cavity 311 .
  • a flange structure 3321 is formed in a circumferential direction of the sliding rod 332 , and the other end of the spring abuts against a side of the flange structure 3321 facing the accommodating portion 31 , that is, the spring is sandwiched between the flange structure 3321 and the piston 32 ′.
  • the accommodating portion 31 is in a volute shape
  • the water pumping portion 32 is a rotor.
  • the rotor rotates in the accommodating portion 31 , and synchronously introduces water in the water tank 11 into the water reservoir cavity 311 and pumps the water in the water reservoir cavity 311 to the cleaning area 10 a. That is, while the rotor is performing the operation process of introducing the water in the water tank 11 into the water reservoir cavity 311 , it also performs the operation process of pumping the water in the water reservoir cavity 311 to the cleaning area 10 a.
  • the above two operation processes are performed simultaneously.
  • the water inlet 31 a and the water outlet 30 b are respectively located on opposite sides of the rotor.
  • the rotor divides the accommodating space 310 into a first cavity and a second cavity.
  • the first cavity and the second cavity together form a water reservoir cavity 311 . That is to say, the water inlet 31 a is in communication with the first cavity, and the water outlet 30 b is in communication with the second cavity.
  • the rotor squeezes water in the first cavity into the second cavity, and a negative pressure is generated in the first cavity.
  • the water in the water tank 11 is sucked into the first cavity under the negative pressure, water in the second cavity has a water pressure, and the water in the second cavity is pumped to the cleaning area 10 a under the water pressure.
  • the execution mechanism 20 has a first rotation axis, the rotor has a third rotation axis, the first rotation axis and the third rotation axis are parallel to but eccentric with respect to one another.
  • the transitional connecting mechanism 33 can transmit torque of the execution mechanism 20 to the rotor. That is, the transitional connecting mechanism 33 is a torque transmission structure, for example, the transitional connecting mechanism 33 is a conveyor belt or a gear structure.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reciprocating Pumps (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Electric Vacuum Cleaner (AREA)
US17/625,082 2019-07-10 2020-04-07 Cleaning device Pending US20220280012A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201910621671.2A CN112205935A (zh) 2019-07-10 2019-07-10 清洁设备
CN201910621671.2 2019-07-10
PCT/CN2020/083519 WO2021004105A1 (zh) 2019-07-10 2020-04-07 清洁设备

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Publication Number Publication Date
US20220280012A1 true US20220280012A1 (en) 2022-09-08

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US17/625,082 Pending US20220280012A1 (en) 2019-07-10 2020-04-07 Cleaning device

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