CN113712472A

CN113712472A - Surface cleaning equipment

Info

Publication number: CN113712472A
Application number: CN202111144518.9A
Authority: CN
Inventors: 戴逢焱
Original assignee: Suzhou Simple Youwei Technology Co Ltd
Current assignee: Suzhou Simple Youwei Technology Co Ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2021-11-30

Abstract

A surface cleaning apparatus includes a main body defining a suction duct therein, and a motor assembly. A motor assembly is disposed within a motor assembly mounting cavity defined by the body for generating a suction airstream flowing along the suction duct. Still inject the electron spare part installation cavity that is linked together with the motor element installation cavity in the main part, seted up the air intake in the main part, the cooling air current that the motor element produced flows through the motor element installation cavity again after getting into the electron spare part installation cavity from the air intake to cool off electron spare part and motor element in proper order. The circuit board is cooled by cooling air flow of the motor, so that the cost of the equipment can be effectively saved, and the volume of the whole equipment is reduced.

Description

Surface cleaning equipment

Technical Field

The invention relates to the technical field of cleaning equipment, in particular to surface cleaning equipment.

Background

With the improvement of living standard, people have higher and higher requirements on cleaning the ground. In order to meet the requirements of different people, various surface cleaning devices such as dust collectors, floor cleaning machines, steam mops and the like emerge in the market. Along with surface cleaning equipment's function is more and more, and components and parts on the corresponding circuit board are also more and more, and in order to guarantee that surface cleaning equipment's volume change is little, each spare part all need occupy less volume, consequently, more components and parts are integrated to the circuit board, and its heat that produces at the during operation is difficult to give off, causes the circuit board overheated easily.

Disclosure of Invention

Aiming at the defects in the technology, the invention provides the surface cleaning equipment which can effectively cool the circuit board and ensure the normal use of the surface cleaning equipment.

In a first aspect, the present invention provides a surface cleaning apparatus,

a main body defining a suction duct therein;

a motor assembly disposed within a motor assembly mounting cavity defined by the body for generating a suction airstream flowing along the suction duct;

the electronic component mounting cavity is communicated with the motor assembly mounting cavity, an air inlet is formed in the main body, and cooling air flow generated by the motor assembly flows through the motor assembly mounting cavity after entering the electronic component mounting cavity from the air inlet so as to sequentially cool the electronic component and the motor assembly.

Optionally, the suction device further comprises a sewage tank in fluid communication with the suction pipeline, the sewage tank is mounted in a sewage tank mounting cavity defined by the main body, and the main body is further provided with an exhaust hole communicated with the sewage tank mounting cavity, and the exhaust hole is used for guiding the cooling air flow to the sewage tank mounting cavity.

Optionally, the suction airflow and the cooling airflow are merged at the upstream of the impeller of the motor assembly to form a mixed airflow, and the mixed airflow passes through the impeller and is discharged to the sewage tank installation cavity through the air outlet channel.

Optionally, the air conditioner further comprises a clean water tank for supplying cleaning liquid, the clean water tank is mounted in the clean water tank mounting cavity defined by the main body, and the main body is further provided with an exhaust hole communicated with the clean water tank mounting cavity, and the exhaust hole is used for guiding the cooling air flow to the clean water tank mounting cavity.

Optionally, the suction airflow and the cooling airflow are merged at the upstream of the impeller of the motor assembly to form a mixed airflow, and the mixed airflow passes through the impeller and then is discharged to the purified water tank installation cavity through the air outlet channel.

Optionally, the bottom wall of the waste water tank mounting cavity is provided with a water leakage hole for guiding at least part of the liquid in the mixed air flow to the surface to be cleaned and/or the cleaning head of the surface cleaning equipment.

Optionally, the main body includes a front frame defining a waste tank installation cavity and an electronic component installation cavity, and a rear frame defining a clean tank installation cavity, the front frame and the rear frame together defining the motor assembly installation cavity.

Optionally, at least a part of the electronic component mounting chamber is located in front of the fresh water tank mounting chamber in a forward direction of the surface cleaning apparatus, and the motor assembly mounting chamber is located above the fresh water tank mounting chamber and below the foul water tank mounting chamber in a vertical direction.

Optionally, the motor assembly includes a motor housing and a wet and dry motor disposed in the motor housing, the motor housing includes an upper housing and a lower housing, and the lower housing defines an air inlet channel and an air outlet channel.

Optionally, along the airflow flowing direction, at least a portion of the cross-sectional area of the air inlet channel is gradually reduced, and the strip channel of the air outlet channel, the air inlet channel and the air outlet channel are all communicated with the sewage tank installation cavity defined by the main body.

The invention provides a surface cleaning apparatus comprising a main body having a suction duct defined therein and a motor assembly. A motor assembly is disposed within a motor assembly mounting cavity defined by the body for generating a suction airstream flowing along the suction duct. Still inject the electron spare part installation cavity that is linked together with the motor element installation cavity in the main part, seted up the air intake in the main part, the cooling air current that the motor element produced flows through the motor element installation cavity again after getting into the electron spare part installation cavity from the air intake to cool off electron spare part and motor element in proper order. The circuit board is cooled by cooling air flow of the motor, so that the cost of the equipment can be effectively saved, and the volume of the whole equipment is reduced.

In a second aspect, the present invention provides a surface cleaning apparatus with a pivoting structure, comprising:

a cleaning head movable across a surface to be cleaned to clean the surface to be cleaned;

a main body pivotably connected to the cleaning head by a pivot structure;

wherein the pivot arrangement comprises an upper link connected to the main body and a lower link pivotably connected to the cleaning head about a first axis to pivot the main body relative to the cleaning head in the direction of travel, the upper and lower links being relatively rotatable about a second axis between to deflect the main body relative to the cleaning head, the first and second axes being substantially perpendicular.

Optionally, the angle between the second axis and the axis of the length of the body is any value between 30 ° and 50 °.

Optionally, the lower connecting member comprises an upright section and a horizontal section connected with the upright section, one end of the horizontal section far away from the upright section is pivotally connected with the cleaning head through a rotating shaft, and the upright section is rotatably connected with the upper connecting member.

Optionally, a first limit structure is arranged at the rotating shaft, and the first limit structure is configured to limit the main body from rotating back and forth relative to the cleaning head when the main body stands upright relative to the cleaning head.

Optionally, the lower connecting piece is further provided with a second limiting structure, the second limiting structure has a locking position and an unlocking position, in the unlocking position, the upper connecting piece and the lower connecting piece can rotate relatively, and in the locking position, the upper connecting piece and the lower connecting piece cannot rotate relatively.

Optionally, the second limiting structure comprises an elastic piece and a sliding block.

Optionally, the outer surface of the upright section is provided with a sliding groove, and the upper connecting piece slides along the sliding groove to rotate relative to the lower connecting piece.

Optionally, a through hole is formed in the peripheral wall of the upper connecting piece, a positioning piece is arranged between the upper connecting piece and the lower connecting piece, part of the positioning piece enters the chute through the through hole, and the rest of the positioning piece is clamped at the through hole to limit the movement between the upper connecting piece and the lower connecting piece along the direction of the second axis.

Optionally, a switch structure is arranged at the rotating shaft, and the switch structure is used for being matched with a micro switch arranged on the cleaning head.

Optionally, the cleaning head is provided with at least one universal wheel in contact with the surface to be cleaned.

In a third aspect, the present invention provides an electric machine assembly comprising

A motor housing including a peripheral wall, a top wall, and a bottom wall defining an installation space therebetween;

a dry and wet motor installed in the installation space for generating a cooling air flow and a suction air flow;

and cooling air flow enters the motor from the cooling air inlet to cool the wet and dry motor and then is discharged out of the motor shell through the air outlet channel.

Optionally, the motor housing is provided with mounting brackets for mounting electrically conductive contacts.

Optionally, the suction air stream and the cooling air stream merge upstream of an impeller of the wet and dry electric machine to form a mixed air stream.

Optionally, the end parts of the air inlet channel and the air outlet channel are provided with sealing elements.

Optionally, at least part of the air inlet channel is tapered in cross-section in the flow direction of the suction airstream.

Optionally, the air outlet channel is disposed between the air inlet channel and the peripheral wall, and a cross section of the air outlet channel is elongated.

In a fourth aspect, the present invention also provides a surface cleaning apparatus having a dirt recovery system comprising a suction duct, a sump tank in fluid communication with the suction duct and a motor assembly as described in any of the above embodiments for generating a suction airstream flowing along the suction duct.

Optionally, the main body defines a waste water tank installation cavity for placing the waste water tank, the air outlet channel is communicated with the waste water tank installation cavity, and the air flow discharged from the air outlet channel is discharged to the outside from a gap between the waste water tank and the main body.

Optionally, the motor housing is further provided with a detection device for detecting whether a filter hypa is installed.

Optionally, the air inlet channel and the air outlet channel are located above the sewage tank installation cavity.

In a fifth aspect, the invention provides a cleaning head for movement over a surface to be cleaned for cleaning the surface, comprising

A suction nozzle adjacent to or in contact with the surface to be cleaned;

a suction duct provided to the cleaning head, the suction duct being in fluid communication with the suction nozzle for recovering dirt from the surface to be cleaned by the suction nozzle;

wherein the suction duct defines a storage space therein, the storage space being configured to store at least a portion of dirt remaining in the suction duct.

Optionally, the suction duct includes a horizontal section and an inclined section arranged in sequence along the airflow flowing direction, the inclined section has a bottom end and a top end along the vertical direction, and the storage space is disposed at the bottom end of the inclined section.

Optionally, the storage space is provided at an intersection of the horizontal section and the inclined section.

Optionally, a through hole communicated with the storage space is formed in the bottom wall of the cleaning head, and a sealing cover is arranged at the through hole to seal the storage space and the outside.

Optionally, the bottom wall of the horizontal segment is gradually inclined downwards along the airflow flowing direction.

Optionally, the storage space is defined by a lower housing of the cleaning head.

Optionally, the storage space is formed by partially recessing the horizontal section downward.

In a sixth aspect, the invention also provides a cleaning head for moving over a surface to be cleaned for cleaning the surface, comprising

A suction nozzle adjacent to or in contact with the surface to be cleaned;

the bottom wall of the cleaning head is provided with a through hole communicated with the suction pipeline, and a sealing cover is arranged at the through hole.

Optionally, the suction pipeline comprises a horizontal section and an inclined section which are sequentially arranged along the airflow flowing direction, the inclined section is provided with a bottom end and a top end along the vertical direction, and the through hole is formed in an area corresponding to the bottom end of the inclined section.

In a seventh aspect, the invention provides a surface cleaning apparatus comprising

A cleaning head for moving over a surface to be cleaned to clean the surface to be cleaned;

a main body having opposite ends, one end pivotally connected to the cleaning head and the other end connected to a handle;

wherein, the main part includes preceding frame and after-frame, preceding frame is injectd there are dirty water tank installation cavity and electronic component installation cavity, the after-frame is injectd there is the clean water tank installation cavity, preceding frame with after-frame makes up together the back and inject motor element installation cavity jointly the cleaner head advancing direction is last the opening of dirty water tank installation cavity just the opening of clean water tank installation cavity is towards the rear.

Optionally, the rear frame further defines a battery pack mounting groove located below the clean water tank mounting cavity.

Optionally, at least a part of the electronic component mounting chamber in the forward direction of the cleaner head is located forward of the fresh water tank mounting chamber.

Optionally, a battery pack is detachably mounted to the battery pack mounting groove.

Optionally, the front frame is provided with at least one air inlet, and the at least one air inlet is communicated with the electronic component mounting cavity.

Optionally, the electronic component installation cavity is communicated with the motor assembly installation cavity, and cooling air flows enter the electronic component installation cavity from the at least one air inlet and then enter the motor assembly installation cavity so as to sequentially cool the electronic component and the motor assembly.

Optionally, a mounting structure is arranged at the battery pack mounting groove, and the mounting structure is used for mounting a terminal of a butt joint battery pack.

Optionally, the motor assembly installation cavity is located below the clean water tank installation cavity and above the sewage tank installation cavity in the vertical direction.

Optionally, the main body further comprises a decoration piece, a communication hole is arranged on the decoration piece, and the communication hole is in fluid communication with the air inlet.

Optionally, the front frame is provided with an exhaust hole for guiding the cooling air flow to the waste tank installation chamber.

Drawings

FIG. 1 is a schematic diagram of a cleaning system according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a cleaning system in one embodiment;

FIG. 3 is a schematic view of the handle according to an embodiment;

FIG. 4 is a cross-sectional schematic view of the handle of FIG. 3;

FIG. 5 is an exploded view of the handle of FIG. 3;

FIG. 6 is a schematic view showing the construction of a fresh water tank according to an embodiment;

FIG. 7 is a sectional view of the fresh water tank of FIG. 6;

FIG. 8 is an exploded view of the fresh water tank of FIG. 6;

FIG. 9 is a schematic view showing the structure of the waste water tank according to an embodiment;

FIG. 10 is a sectional view of the foul water tank of FIG. 9;

FIG. 11 is an exploded view of the sump of FIG. 9;

FIG. 12 is a schematic view showing the separated upper and lower covers of the waste water tank of FIG. 9;

FIG. 13 is a schematic view showing the construction of a cover of the foul water tank of FIG. 9;

FIG. 14 is a schematic view (at another angle) showing the structure of a cover of the foul water tank of FIG. 9;

FIG. 15 is an exploded view of the main frame according to one embodiment;

FIG. 16 is a schematic cross-sectional view of a main frame in one embodiment;

FIG. 17 is a schematic view of a front lower frame at one angle according to one embodiment;

FIG. 18 is a schematic view of a lower front frame at another angle according to an embodiment;

FIG. 19 is a schematic view of a rear frame at another angle according to an embodiment;

FIG. 20 is a schematic view of a rear frame at another angle according to an embodiment.

FIG. 21 is a schematic view of an angle of a motor assembly according to one embodiment.

FIG. 22 is a schematic view of another angle of the motor assembly in one embodiment;

FIG. 23 is a cross-sectional view of a motor assembly in one embodiment;

FIG. 24 is an exploded view of the motor assembly of one embodiment;

FIG. 25 is a schematic view of the mounting of the pivot structure to the pivot bracket in one embodiment;

FIG. 26 is a schematic view of a pivot structure according to an embodiment;

FIG. 27 is an exploded view of the pivot structure in one embodiment;

FIG. 28 is a schematic view of the pivot structure with the upper and lower links separated in one embodiment;

FIG. 29 is a cross-sectional view of the pivot structure in one embodiment (the second limit structure is in the locked position);

FIG. 30 is a cross-sectional view of the pivot structure in one embodiment (the second limit structure is in the unlocked position);

fig. 31 is a schematic structural view of a pivot structure in an embodiment.

FIG. 32 is a schematic view of an embodiment of a cleaning head;

FIG. 33 is a schematic view of the cleaning head with the upper housing removed in one embodiment;

FIG. 34 is a schematic view of the upper housing of the cleaning head in one embodiment;

FIG. 35 is a schematic view showing the structure of the cleaning head after the upper housing and the brush roll cover are removed in one embodiment;

FIG. 36 is a schematic view of an alternative embodiment of a cleaning head;

FIG. 37 is a cross-sectional view of a cleaning head in accordance with one embodiment;

FIG. 38 is a schematic view of an embodiment of a dispenser in a cleaning head shown exposed;

FIG. 39 is a schematic cross-sectional view of a cleaning head at an angle according to one embodiment;

FIG. 40 is an enlarged view of the structure of area A shown in FIG. 39;

FIG. 41 is a cross-sectional view of the cleaning head at another angle in one embodiment.

FIG. 42 is a schematic diagram of a drive assembly according to one embodiment;

fig. 43 is a cross-sectional view of the drive assembly of fig. 42.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indication is involved in the embodiment of the present invention, the directional indication is only used for explaining the relative positional relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.

Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a cleaning system according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of a cleaning system in one embodiment. The direction of the arrow in fig. 2 is the forward direction of the surface cleaning apparatus. The cleaning system comprises the surface cleaning apparatus 100 and the base 200, the surface cleaning apparatus 100 further comprises a contamination recovery system and a cleaning liquid supply system, the cleaning liquid supply system comprises a clean water tank 4, a pipeline and a nozzle, liquid in the clean water tank 4 is sprayed onto the roller brush or the surface to be cleaned through the nozzle after passing through the pipeline, the surface is cleaned, and then the contamination recovery system recovers the cleaned contamination. The dirt recovery system comprises a suction nozzle arranged at the cleaning head, a sump 5 for recovering dirt, a motor assembly 6 for generating a suction airflow, and a suction duct fluidly connecting the suction nozzle, the sump and the motor assembly. The suction airflow generated by the motor assembly 6 enables dirt at the suction nozzle to flow into the sewage tank 5 through the suction pipeline, and after the dirt is subjected to gas-liquid separation in the sewage tank 5, the gas is discharged out of the equipment by the motor. The base 200 may dock with the surface cleaning apparatus 100, and after the surface cleaning apparatus 100 is docked to the base 200, a battery charge may be implemented and/or a self-cleaning procedure may be initiated.

With continued reference to fig. 1 and 2, the surface cleaning apparatus 100 includes a handle 1, a main body 2, and a cleaning head 3, the handle 1 and the cleaning head 3 being respectively provided at both ends of the main body 2 in an axial direction thereof. The handle 1 comprises a handle portion 11 and an elongated rod 12, the elongated rod 12 may be a telescopic rod or a non-telescopic rod, and the elongated rod may also be pivoted or bent relative to the main body.

Handle (CN)

Referring to fig. 3-5, fig. 3 is a schematic view of the handle in one embodiment. Fig. 4 is a cross-sectional schematic view of the handle of fig. 3. Fig. 5 is an exploded view of the handle of fig. 3. The handle portion 11 is formed of two annular inner shells 113 molded as a complete ring and having a mounting structure extending outwardly from the outer periphery thereof and connected to the elongated rod 12 by snap-fit and/or bolt. The outer shell comprises an upper shell 111 and a lower shell 112, the upper shell 111 and the lower shell 112 are respectively arranged at the upper side and the lower side of the inner shell and surround the inner shell, the outer shell and the inner shell form a complete handle part, the upper shell is limited with an installation space, the circuit board is installed in the installation space, the upper shell is constructed with a through hole penetrating through the shell, the control button is connected with the circuit board through the through hole and used for controlling surface cleaning and/or program operation of a base, the circuit board is installed in the installation space through the installation support, the circuit board is connected to the installation support 114 through a buckle and/or a bolt, a silica gel pad is arranged between the installation support 114 and the inner wall surface of the upper shell 111, the silica gel pad can be waterproof on one hand and can effectively improve hand feeling on the other hand, two ends of the installation support are connected to the upper shell through a buckle and/or a bolt, and the upper shell 111 and the lower shell 112 are connected through a buckle and/or a bolt, a wire passage is defined between the outer and inner housings through which the wiring harness extends to the elongated pole.

With continued reference to FIG. 5, the lower housing 112 is Y-shaped, with the upper half of the Y-shaped lower housing attached to the upper housing 111 and the lower half defining a channel through which the elongated rod 12 can be attached to the inner housing. Go up between casing and the lower casing, all can set up location structure between shell and the inner shell to fix a position when convenient assembly.

With continued reference to fig. 3-5, the elongated rod 12 has opposite ends, one end connected to the handle portion and the other end connected to the main body by a buckle and/or a bolt, the elongated rod connecting the main body at one end thereof with a harness connector 121, a passage defined in the elongated rod through which the harness passes to be electrically connected to the harness connector, the harness connector being electrically connected to the harness connector located in the main body for transmitting signals. The harness connector 121 is mounted to the elongated pole 12 by a mounting member 122, the outer periphery of which is provided with a seal ring to prevent water from entering the body. The mounting member is mounted to the elongate rod by at least one snap catch 123, the snap catch 123 further being engageable with a mounting aperture in the main body to limit axial movement of the elongate rod relative to the main body.

Water purifying tank

Referring to fig. 6-8, fig. 6 is a schematic structural view of a fresh water tank in an embodiment. Fig. 7 is a sectional view of the fresh water tank of fig. 6. Fig. 8 is an exploded view of the fresh water tank of fig. 6. The water purifying tank 4 comprises a container 41 and a top cover 42, the container 41 comprises a bottom wall 411, a top wall 412 and a side wall 413 extending between the top wall 412 and the bottom wall 411, the top wall and the side wall extending downwards from the periphery of the top wall are integrally molded, the bottom wall is welded to the side wall through a high-frequency induction welding process to define a liquid storage space, and the top wall 412 is provided with a water injection port 43. The bottom wall is provided with a plunger valve 44 which is opened when the clean water tank 4 is mounted to the main body, and the plunger valve is of a conventional structure and will not be described in detail. The bottom wall is also provided with a limiting structure 414 for preventing the water purifying tank from sliding out of the main body after being installed on the main body. Be provided with the recess on the lateral wall, convenience of customers gets and puts. The top cap 42 sets up in the container top, be provided with the lid 421 that can pivot on the top cap, lid 421 can open and seal the water filling port, it has installation space to inject between lid 421 and the roof 412, part hasp 45 is located to install in installation space, the hasp includes button 451 and spring 4552, the one end butt roof of spring 452, other end butt button 451, the button includes integrated into one piece and interval setting's joint portion 453 and touch 454, press touch 454, joint portion 453 can move with touch, the upper end of joint portion and touch all stretches out in top cap 42, the upper end joint of joint portion 453 is in the recess that the main part corresponds, touch 454's upper end exposes in the external world, make things convenient for the user to contact. The top cover 42 is generally prismatic in shape and includes a front wall 422, a rear wall 423 and a side wall 424 extending therebetween, with the front wall 422 and the rear wall 423 being connected at one end and separated at the other end to define a mounting space. The back wall undercut forms the space that is used for installing the lid, has seted up the through-hole on the back wall to make joint portion stretch out from the top cap is inside, and another through-hole has been seted up to the junction of antetheca and back wall, stretches out from the inside of top cap in order to make things convenient for the trigger to stretch out.

Sewage tank

Referring to fig. 9-14, fig. 9 is a schematic view showing a structure of the waste water tank in one embodiment. Fig. 10 is a sectional view of the foul water tank of fig. 9. Fig. 11 is an exploded view of the sump of fig. 9. Fig. 12 is a schematic structural view of the wastewater tank of fig. 9 after the upper cover and the lower cover are separated. Fig. 13 is a schematic view showing the structure of a cover of the foul water tank of fig. 9. Fig. 14 is a schematic view (at another angle) showing the structure of a cover of the foul water tank of fig. 9. The sewage tank 5 comprises a body 51 and a cover 52, wherein the body 51 is integrally molded, the body 51 comprises a bottom wall 511 and a side wall 512 formed by upward extending of the periphery of the bottom wall 511, an opening surrounded by the side wall is arranged on the body, an air inlet pipe 513 is arranged at the bottom wall 512, and the air inlet pipe 513 is formed by upward extending of part of the bottom wall. The height of the air inlet pipe does not exceed the side wall and occupies about two thirds of the total height of the side wall.

The air inlet pipe is provided with a gas-liquid separator (not shown in the figure), the top end of the air inlet pipe is sleeved with the gas-liquid separator (the air outlet of the air inlet pipe is positioned at the top end of the air inlet pipe), a filter screen (not shown in the figure) is arranged in the body and used for keeping solid impurities in the sewage tank when a user pours sewage, and the filter is arranged at the middle of the sewage tank and is higher than the warning water level line. The through hole has been seted up on vapour and liquid separator's the body, and the through hole is at least partly with the intake pipe intercommunication, and the effect of through hole is when empting sewage avoids partial sewage to enter into vapour and liquid separator's body and can't discharge.

With continued reference to fig. 12-14, the cover 52 defines an air outlet, the cover is formed by fastening an upper cover 521 and a lower cover 522, the upper cover 521 is an integrally molded annular structure, the upper cover includes an inner wall and an outer wall located outside the inner wall, upper ends of the inner wall and the outer wall are connected by a top wall, and a receiving space is defined between the inner wall, the outer wall and the top wall, wherein the annular inner wall defines an upper through hole 523 for receiving a filter, the periphery of the upper through hole is stepped for supporting a filter hepa, the filter hepa is a conventional structure, and details thereof are not described herein. The latch 53 is disposed in the accommodating space, the latch includes a button 531 and a spring 532, the button includes a clamping portion 533 and a touch portion 534, the button 531 is integrally molded, wherein a portion of the clamping portion 533 extends out of an opening of the top wall, an opening is formed in an outer wall of the button, the touch portion 534 is exposed to the upper cover through the opening, and a user can control the touch portion through the opening.

With continued reference to fig. 12-14, the lower cover 522 is configured to fit the upper cover 521, and is also an integrally molded ring structure, wherein a lower through hole 524 is defined at the center thereof, and the air flow in the recovery tank passes through the lower through hole 524 and the upper through hole 523 in sequence and then flows out of the waste water tank. In particular, the annular peripheral wall defines a cavity, a portion of the bottom wall of which is configured with a grid-like structure (lower through hole) inclined with respect to the horizontal plane, while the grid-like structure is inclined with respect to the peripheral wall, the bottom end of which is lower than the grid-like structure.

With continued reference to fig. 12-14, the lower cover 522 is provided with a pair of mounting brackets 525, each mounting bracket 525 is provided with a conductive plate 526, the conductive plate may be made of a metal material or a non-metal material, the conductive plate extends into the accommodating space defined by the body, when the liquid in the accommodating space reaches a certain volume, the two conductive plates are conducted to send a liquid full signal, and the user is prompted to clean the sewage tank in time. Preferably, the conducting strip is arranged above the filter screen. The periphery of lower lid 522 is equipped with the round sealing washer, and the sealing washer plays sealed effect with the inner wall interference fit of sewage case. In addition, a sealing ring 527 is also arranged at the butt joint position of the upper cover 521 and the lower cover 522 to seal the gap between the upper through hole and the lower through hole to form a complete through hole. The top end of the conducting strip penetrates through the through hole on the top wall of the upper cover body and is electrically connected with the electric contact piece on the main body.

The lower surface of the lower cover body is outwards protruded with a convex structure, the convex structure is matched with the through hole in the body of the gas-liquid separator, and when the cover can cover the opening of the sewage tank body, the convex structure seals the through hole.

Main body

Referring to fig. 15-20, fig. 15 is an exploded view of the main frame in one embodiment. FIG. 16 is a schematic cross-sectional view of a main frame according to an embodiment. FIG. 17 is a schematic view of a front frame at one angle according to an embodiment. FIG. 18 is a schematic structural diagram of a lower front frame at another angle in an embodiment. FIG. 19 is a schematic view of a rear frame at another angle according to an embodiment. FIG. 20 is a schematic view of a rear frame at another angle according to an embodiment. The main body 2 includes a main frame and a decoration (not shown in the drawing) provided on the main frame. The main frame defines a plurality of accommodating spaces for accommodating the related structures such as the clean water tank 4, the foul water tank 5, the motor assembly 6, the circuit board 24, the display screen 25 and the like.

Referring to fig. 15 to 18, the main frame includes a front frame 22 and a rear frame 23, and the front frame 22 defines a sump mounting chamber 221 and an electronic component mounting chamber 222, wherein an opening of the sump mounting chamber 221 faces a front side and an opening of the electronic component mounting chamber 222 faces a rear side. The main body 2 adopts a structural form that the front frame and the rear frame are butted, when equipment is produced and manufactured, not only is the manufacturing of a die more convenient, but also the labor cost is saved when the die is installed, parts borne by the structure of a single frame are relatively less, a stronger structure is not needed, and therefore the used materials can be reduced, and the main body is further lightened.

Referring to fig. 19 to 20, the rear frame 23 defines a clean water tank installation cavity 231, a part of the bottom wall of the installation cavity is recessed downward to form an installation groove 232, a through hole penetrating through the bottom wall is formed in the installation groove 232, a rubber ring 233 is arranged at the through hole, the rubber ring 233 is annular and penetrates through the through hole, and the rubber ring on one side in the installation groove is used for abutting against a water outlet valve on the clean water tank to play a role in sealing and preventing liquid in the clean water tank from entering the installation groove. The rubber ring positioned on the other side of the through hole is in butt joint with the water outlet disc 234, the rubber ring also plays a sealing role, an ejector pin structure penetrating through the through hole is arranged on the water outlet disc 234, after the water purification tank is installed in the installation groove, the switch of the plunger valve is upwards ejected by the ejector pin structure, the water outlet channel is opened, and liquid enters the water outlet disc and then is used for guiding water to the surface to be cleaned and/or the rolling brush through the guide pipe. An infrared detection device is arranged in the conduit and used for detecting the liquid flow in the conduit. The infrared detection device is detachably fixed on the inner side of the front frame. A water outlet hole is further formed in the mounting groove and connected to the guide pipe through a water outlet disc for guiding liquid in the mounting groove to the position of the cleaning head.

Rear frame 23 has still been injectd battery package mounting groove 235 for installation battery package 9, clean water tank 4 and battery package 9 are all towards the rear of equipment, can follow the rear and take off clean water tank and battery package, are equipped with the mounting structure 236 that is used for installing binding post in the battery package mounting groove, and mounting structure 236 detachably sets up in battery package mounting groove department, and battery package mounting groove department is equipped with the through-hole, and the wire that links to each other with binding post is connected with mechanisms such as circuit board, motor through this through-hole.

Referring to fig. 16, and also to other views, the front frame 22 and the rear frame 23 define a motor assembly mounting cavity 223 after being abutted, and the motor assembly can be mounted. The electric motor assembly installation chamber 223 is located below the fresh water tank installation chamber 231 and above the foul water tank installation chamber 221 in the vertical direction. Electronic components such as the circuit board 24 and the display screen 25 are arranged in the electronic component mounting cavity 222 and located in front of the water purifying tank mounting cavity 231, and the motor assembly 6 is arranged below the water purifying tank mounting cavity 231 and above the sewage tank mounting cavity 221. Electronic component installation cavity 222 is located motor element 6's top, air intake 224 has been seted up to electronic component installation cavity 222's lateral wall, air intake 224 is located motor element 6's fan cooling wind channel's upper reaches, outside air current gets into electronic component installation cavity 222 from this air intake 224 after, at first cool off electronic component (mainly be the circuit board), then this air current gets into motor element 6's inside from fan cooling wind channel's cooling inlet, cool off the motor, then discharge from the cooling outlet, the cooling outlet sets up in motor element main air duct's air inlet department, the flow of air current in the cooling wind channel is realized to the negative pressure that produces through the air inlet. The trim piece is provided with a communication aperture that is in fluid communication with the air inlet 224. The front frame is provided with an exhaust hole 225, and the exhaust hole 225 is used to guide the cooling air flow to the waster tank installation chamber.

Motor assembly

Referring to fig. 21-24, fig. 21 is a schematic view of an angle of a motor assembly in one embodiment. FIG. 22 is a schematic view of another angle of the motor assembly in one embodiment. Figure 23 is a cross-sectional view of a motor assembly in one embodiment. Fig. 24 is an exploded view of the motor assembly in one embodiment. The motor assembly 6 includes a motor housing 61 and a wet and dry motor (not shown) disposed in the motor housing 61. The motor housing includes an upper housing 62 and a lower housing 63, the upper housing 62 being constituted by a peripheral wall and a top wall, and the lower housing 63 being constituted by a peripheral wall and a bottom wall, with an installation space defined therebetween. The dry and wet motor is installed in the installation space for generating cooling air flow and suction air flow. The peripheral wall and/or the top wall are provided with a cooling air inlet, in this embodiment, the top wall is provided with a cooling air inlet 621 and a wire passing hole 622 (see fig. 21) for cooling air to enter, and the inner side of the top wall is provided with a shock pad 623, and the shock pad is in contact with the wet and dry motor.

Referring to fig. 22 and 23, the bottom wall of the lower housing is provided with an air inlet channel 631 and an air outlet channel 632, an air inlet of the dry-wet motor is provided with a rubber pad 633, and the air inlet is in fluid connection with the air inlet channel 631 through the rubber pad to achieve sealing. Rubber pad 633 sets up between dry and wet motor and the diapire of lower casing 63, plays the shock attenuation simultaneously and sealed effect, and rubber pad 633 is used for cutting apart inlet air channel 631 and air-out passageway 632. The air inlet channel 631 arranged on the bottom wall is in a circular truncated cone shape, and the sectional area of the air inlet channel 631 is gradually reduced along the airflow flowing direction. The cross section of air-out passageway 632 is rectangular form, and air-out passageway 632 sets up between inlet air channel 631 and perisporium, and the opening of sewage case installation cavity is kept away from to air-out passageway 632, is closer to the inner wall of sewage case installation cavity than inlet air channel 631. The cooling air flow enters the interior of the motor from the cooling air inlet 621 to cool the wet and dry motor and then is discharged out of the motor housing through the air outlet channel 632. In one embodiment, the suction air flow B and the cooling air flow a are merged upstream of the impeller of the wet and dry electric machine to form a mixed air flow C. I.e. the rotation of the impeller generates a suction air flow and at the same time a cooling air flow. In other embodiments, the suction air flow and the cooling air flow may also be combined downstream of or within the impeller to form a mixed air flow. Thus, the cost of the motor can be reduced, and the size of the motor can be reduced. Of course, it is understood that the cooling air flow may be generated by other devices besides the impeller of the air inlet, and will not be described in detail herein. The periphery of the dry and wet motor is further provided with a sealing ring 624, and the sealing ring 624 is attached to the top wall and used for separating the cooling air duct from the air outlet channel 632 of the dry and wet motor.

Refer to fig. 17 and 18. The direction of the arrows in fig. 18 is the flow direction of the cooling air flow. The motor assembly 6 is mounted in the motor assembly mounting cavity 223. The motor assembly installation cavity 223 is located above the sewage tank installation cavity 221. The sewage tank 5 is installed into a sewage tank installation chamber 221 defined by the main body, and the main body 2 is further opened with an exhaust hole 225 communicating with the sewage tank installation chamber, the exhaust hole 225 being used to guide a cooling air flow or a mixed air flow to the sewage tank installation chamber 221. When the equipment normally works, the airflow discharged from the air outlet channel is discharged to the outside from the gap between the sewage tank and the main body, so that the noise can be effectively reduced.

With continued reference to fig. 23, the suction airflow B and the cooling airflow a join upstream of the impeller of the motor assembly to form a mixed airflow C, and the mixed airflow C flows through the impeller and is discharged to the waste water tank installation cavity 221 through the air outlet channel 632. The bottom wall of the waste tank mounting cavity 221 is provided with a drain hole (not shown) for directing at least a portion of the liquid in the mixed air stream to the surface to be cleaned and/or the cleaning head of the surface cleaning apparatus.

In other embodiments, the main body 2 further defines an air outlet communicating with the clean water tank installation cavity for guiding the cooling air flow or the mixed air flow to the clean water tank installation cavity. The bottom wall of the water purifying tank installation cavity can also be provided with water leakage holes. In a further embodiment, the suction air flow and the cooling air flow are combined upstream of the impeller of the motor assembly to form a mixed air flow, and the mixed air flow passes through the impeller and is discharged to the clean water tank installation cavity through the air outlet channel.

With continued reference to fig. 24, the ends of the inlet air channel 631 and the outlet air channel 632 are each provided with a seal 634, and the seal 634 is disposed outside the bottom wall of the lower housing 63 and between the motor housing and the bottom wall of the motor assembly installation cavity for dividing the inlet air channel and the outlet air channel. Further, the two sealing elements may be integrally formed, i.e. two relatively independent holes are provided in one rubber gasket.

With continued reference to fig. 22, the exterior of the lower housing 63 of the motor housing is provided with conductive contacts 635, two conductive contacts 635 are telescopically disposed on the mounting brackets 636 of the lower housing, and a portion of the conductive contacts 635 can extend into the sump mounting cavity and electrically connect to conductive strips on the sump. The conductive contact is arranged between the air inlet channel and the air outlet channel.

With continued reference to fig. 22, the lower housing 63 of the motor housing is further provided with a detection device 637, the detection device 637 can send out a signal after the filter hpa is installed in place, at this time, the machine can be normally used, and if the filter hpa is not installed in place, the machine sends out an alarm signal to remind a user to install the hpa. The detection device can be a reed switch or other devices capable of sending signals, and the filter handkerchief is provided with a magnet. The detection device and the air outlet channel are respectively positioned on two sides of the air inlet channel.

Referring to fig. 23 or 24, a damper 63 is disposed between the motor housing 61 and the main body, the damper 63 may be disposed on the main body, or may be disposed on the motor housing, or the damper 63 may be a structure independent of the main body and the main body, in this embodiment, two arc-shaped damper pieces are disposed between the motor housing and the front frame, and the damper pieces between the motor housing and the rear frame are adhered to the motor housing. And a sealing ring is arranged at the joint between the upper shell and the lower shell.

Pivoting structure

Referring to fig. 25-31, fig. 25 is a schematic view of the mounting of the pivot structure to the pivot bracket in one embodiment. Fig. 26 is a schematic structural view of a pivot structure in an embodiment. FIG. 27 is an exploded view of the pivot structure in one embodiment. FIG. 28 is a schematic view of the pivoting structure with the upper and lower links separated in one embodiment. Fig. 29 is a cross-sectional view of a pivoting structure in an embodiment (the second limit structure is in the locked position). Fig. 30 is a cross-sectional view of the pivot structure in one embodiment (the second limit structure is in the unlocked position). Fig. 31 is a schematic structural view of a pivot structure in an embodiment. The main body 2 and the cleaner head 3 are pivotally connected by a pivot arrangement 7. The pivoting structure 7 comprises an upper link 71 and a lower link 72, one end of the upper link 71 being connected to the bottom end of the front frame, the other end of the upper link 71 being rotatably connected to one end of the lower link 72 to ensure that the main body rotates relative to the cleaner head about the axis of the main body, and the other end of the lower link 72 being pivotally connected to the cleaner head to ensure that the main body rotates back and forth relative to the cleaner head. In particular, referring to figure 26 or figure 28, the lower link 72 is pivotally connected to the cleaner head about a first axis Y to pivot the main body relative to the cleaner head in the direction of travel, and the upper and

lower links

71, 72 are relatively rotatable therebetween about a second axis X to deflect the main body relative to the cleaner head, the first and second axes Y, X being substantially perpendicular. Referring to fig. 29, the angle between the second axis X and the axis Z of the body in the length direction is any value between 30 ° and 50 °. Adopt this kind of pivot structure, rotate the formula around second axis X when the main part, great deflection can take place for the handle part, skew second axis X, at this moment, exert a little power slightly to the handle, the cleaning head can be by the power change direction of motion that the main part exerted, the below of cleaning head is provided with at least one universal wheel, this pivot structure and universal wheel cooperation, can make the more convenient cleaning equipment of controlling of user, realize turning to of round brush, and simultaneously, the universal wheel is installed to the below of cleaning head, under the drive of handle, the cleaning head can also lateral motion, adapt to different scenes.

With continued reference to fig. 29, the upper coupling member 71 is substantially an arc-shaped tubular structure, which is hollow, and the plastic pipe 73 penetrates through the hollow structure to form a part of the suction line so as to fluidly communicate the waste tank with the suction nozzle of the cleaner head, and one end of the plastic pipe 73 is provided with a rubber pipe, and a part of the rubber pipe extends into the waste tank installation cavity, and after the waste tank is installed in the waste tank installation cavity, the air inlet pipe of the waste tank is in sealed contact with the rubber pipe. The plastic pipe 73 is provided with a contamination detection device 77, specifically, the two ends in the radial direction of the plastic pipe 73 are respectively provided with an infrared emission device and an infrared receiving device, light emitted by the infrared emission device passes through the plastic pipe and then is received by the infrared receiving device, when the amount of contamination in the suction pipeline is large, most of light is blocked and cannot be received, therefore, the contamination detection device 77 can send a signal, and the controller controls the dry-wet motor to increase the rotating speed after receiving the signal. When the dirt detecting device 77 detects that the dirt is less, the dry and wet motor is controlled to reduce the rotating speed.

With continued reference to figures 26 and 27, the lower attachment 72 is generally L-shaped and comprises an upright section 721 and a horizontal section 722, the upright section 721 defines a through hole, the hose 74 extends through the through hole, the two ends of the hose 74 are respectively provided with a rubber tube and are respectively connected with the corresponding tubes in a sealing manner, one end of the hose is connected with the plastic tube 73 in a fluid manner, the other end of the hose is connected with the suction nozzle of the cleaning head in a fluid manner, the end of the horizontal section 722 far away from the upright section 721 is provided with a rotating shaft 723, and the lower attachment 72 can pivot around the pivoting bracket 78 on the cleaning head through the rotating shaft 723 so as to enable the main body to pivot back and forth relative to the cleaning head. A first limiting structure 724 is disposed on the rotating shaft 723, in this embodiment, the first limiting structure 724 is a first protruding structure, the first protruding structure is matched with a second protruding structure disposed on the cleaning head, and when the main body is in the upright position, the two protruding structures are matched to limit the forward and backward rotation of the main body relative to the cleaning head (without external force). Referring to fig. 29 and 30, the lower link is further provided with a second limit formation 75, the second limit formation 75 being cooperable with the upper link to define relative movement between the upper link and the lower link, the second limit formation 75 having a locked position in which relative rotation between the upper link 71 and the lower link 72 is permitted and an unlocked position in which relative rotation between the upper link 71 and the lower link 72 is not permitted. Specifically, in this embodiment, the second limiting structure 75 is a retractable slider, and when the main body is tilted relative to the cleaning head, the slider extends outward and is separated from the upper connection, and at this time, the upper connection member 71 and the lower connection member 72 can rotate relative to each other, and when the main body is erected relative to the cleaning head, the slider is retracted, and a part of the slider extends into the groove defined by the upper connection member, and at this time, because the slider is connected to the lower connection member, the relative rotation between the upper connection member and the lower connection member cannot occur.

Referring to fig. 28, the outer surface of the upright section 721 is provided with a sliding groove 727, the upper connecting member 71 and the lower connecting member 72 are guided by the sliding groove 727 to rotate relatively therebetween, a through hole 711 is formed in the peripheral wall of the upper connecting member 72, and the positioning piece 76 can penetrate through the through hole and enter the sliding groove to limit the movement of the upper connecting member 71 and the lower connecting member 72 in the axial direction. The positioning piece 76 is step-shaped, a part of the structure of the positioning piece 76 is matched with the sliding groove 727, so that the positioning piece 76 and the lower connecting piece 72 are relatively static along the axial direction, and the other part of the structure of the positioning piece 76 is matched with the through hole 711, so that the positioning piece 76 and the upper connecting piece 71 are relatively static along the axial direction, and the relative static along the axial direction but only the relative rotation around a shaft between the upper connecting piece and the lower connecting piece can be ensured.

Referring to fig. 31, a switch structure 726 is disposed at the rotating shaft 723 of the lower connecting member 72, and the switch structure 726 cooperates with a micro switch disposed at the cleaning head to implement an upright power-off function, that is, when the main body is in an upright state and is not placed on the base, the surface cleaning apparatus is in a power-off state, and the battery does not supply power to any component. The through holes defined by the upper connector 71 and the lower connector 72 accommodate the suction duct and at least a portion of the cable to pass through, and a separate wire passing hole is defined therein, and the detailed structure thereof will not be described in detail.

Cleaning head

Referring to fig. 32-35, fig. 32 is a schematic view of a cleaning head in one embodiment. FIG. 33 is a schematic view of the cleaning head with the upper housing removed according to one embodiment. FIG. 34 is a schematic view of the structure of the upper housing of the cleaning head in one embodiment. FIG. 35 is a schematic view showing the structure of the cleaning head after the upper housing and the brush roll cover are removed in one embodiment; the cleaner head 3 is provided with a pivot bracket 78 (as shown in figure 35) for docking with the pivot formation 7, and the lower link 72 is pivotally provided on the pivot bracket. The cleaning head 3 further includes an upper housing 31 and a lower housing 32, and an installation space is defined between the upper housing 31 and the lower housing 32 for installing various components. The upper casing 31 and the lower casing 32 are both h-shaped, and spaces for accommodating the roll brushes are defined at both ends in the moving direction, respectively, for mounting the front roll brush 33 and the rear roll brush 34, respectively. A rolling brush cover 38 is disposed above the rolling brush, and defines a rolling brush chamber together with the upper and

lower cases

31 and 32. The inner side of the rolling brush cover is provided with a water scraping strip and/or comb teeth to scrape dirt and/or hair on the rolling brush.

With continued reference to fig. 34, the upper housing 31 is provided with a latch 311, the roller cover 38 can be released through the latch 311, the upper housing 31 is further provided with an ejection mechanism 312, and the ejection mechanism 312 ejects the roller cover a certain distance after the roller cover is unlocked, so as to facilitate the user to take off the roller cover. The upper housing 31 and the pivot bracket 78 cooperate to limit the forward-rearward, upward-downward movement of the lower link, allowing only pivotal movement of the lower link about the pivot axis.

With continued reference to fig. 35, the lower housing 32 is provided with a water pump 321, a circuit board 322, a roller brush drive assembly 8, an ozone generator 323, and the like. The lower housing 32 is also provided with universal wheels and/or rollers. The water pump 321 and the roller brush driving assembly 8 are respectively arranged on two opposite sides of the suction pipeline 324, the ozone generator 323 is arranged behind the suction pipeline 324, and the circuit board 322 is arranged behind the water pump 321. The water pump 321 is installed in the lower shell through a water pump cover, and the periphery of the water pump 321 is provided with a shock pad. The round brush drive assembly 8 is installed in the lower shell through the assembly cover, and the periphery of the drive motor is provided with a shock pad.

Both ends of the lower housing 32 in the axial direction of the roll brush are provided with water leakage holes (not shown) respectively for guiding the liquid inside the cleaning head to the surface to be cleaned.

Referring to fig. 36-38, fig. 36 is a schematic view of another angle of the cleaning head in one embodiment. Figure 37 is a cross-sectional view of a cleaning head in accordance with one embodiment. Figure 38 is a schematic view of an embodiment of a dispenser in a cleaning head shown exposed. With continued reference to fig. 38, a dispenser 35 is provided on the cleaner head for spraying cleaning liquid onto the front roller brush, the dispenser 35 fitting into a recess defined by the lower housing. The distributor 35 is a strip structure and is provided with a water chute, spray holes are uniformly arranged in the water chute, cleaning solution is sprayed to the rolling brush, and the rolling brush scraping strip 36 is arranged below the distributor and is used for scraping most of dirt on the rolling brush before wetting the rolling brush. The rolling brush scraper 36 may be made of a metal material or a hard plastic.

With continued reference to fig. 36 and 37, a floor scraping strip 37 is also provided on the lower housing for scraping a surface to be cleaned. The ground scraping strip 37 is arranged behind the front rolling brush, and the missed dirt is kept at the suction port in the advancing process, so that the missing of the dirt is reduced as much as possible. The ground scraping strip 37 is installed to the lower shell through the installation support 39, at least one roller is further arranged on the installation support 39, the installation support 39 is detachably arranged on the lower shell, and a user can clean the scraping strip and the roller by detaching the installation support. The mounting bracket 39 is further provided with a through hole 391, the through hole 391 is communicated with the suction pipeline, and a sealing cover 392 is arranged at the through hole, so that the through hole can be sealed, and after the sealing cover 392 is opened, dirt accumulated in the suction pipeline 324 can be cleaned through the through hole. The ground scraping strip can be made of soft rubber or hard rubber materials, and is not limited here.

With continued reference to fig. 37, the front rolling brush 33 and the rear rolling brush 34 rotate in opposite directions, a rolling brush scraping strip 36 for scraping off dirt of the rolling brush is arranged in a rolling brush cavity where the front rolling brush 33 is located, the suction pipeline 324 is communicated with the front rolling brush cavity to suck the scraped dirt into the sewage tank, a rolling brush cavity where the rear rolling brush 34 is located is not communicated with the suction pipeline and is a single chamber, a rear scraping strip 325 is also arranged at the rear rolling brush cavity and is used for scraping off at least part of dirt on the rear rolling brush to prevent the dirt from entering the rolling brush cavity, the rear scraping strip 325 is arranged in front of the rear rolling brush and is mounted on the lower housing, and the position of the rear scraping strip 325 in the height direction is slightly higher than the surface to be cleaned and is not in contact with the surface to be cleaned. The rear scraping strip is arranged in front of the rear rolling brush, when the cleaning machine is used for cleaning forwards, dirt on the rear rolling brush can be continuously scraped off and then pushed forwards by the rear rolling brush, so that the dirt is not missed on the surface to be cleaned, when the cleaning machine is used for cleaning backwards, the scraped dirt is left on the surface to be cleaned, and then the scraped dirt is swept by the front rolling brush or sucked by the suction nozzle and then is recovered to the sewage tank.

Referring to fig. 39-41, fig. 39 is a cross-sectional view of a cleaning head at an angle according to one embodiment. Fig. 40 is an enlarged view of the structure of the region a shown in fig. 39. FIG. 41 is a cross-sectional view of the cleaning head at another angle in one embodiment. In this embodiment, the cleaning head 3 includes a suction nozzle 329 and a suction conduit 324, the suction nozzle 329 being adjacent to or in contact with the surface to be cleaned. Stirring pieces such as a rolling brush and the like can be arranged in the suction nozzle, and any stirring piece can not be included. The suction conduit 324 is in fluid communication with the suction nozzle 329 for the recovery of soil from the surface to be cleaned by the suction nozzle 329. The suction duct 324 defines a storage space 328 therein, the storage space 328 being configured to store at least a portion of dirt remaining within the suction duct. The residual dirt referred to herein means that a part of the dirt attached to the inside of the duct flows back to the suction nozzle due to gravity after the apparatus is stopped. If the dirt is heavy, it may flow from the suction nozzle back to the surface to be cleaned. The storage space 328 serves to temporarily store the part of the contaminated water to be recovered to the contaminated water tank when the apparatus is operated next time (self-cleaning or normal operation). The storage space is arranged in the suction pipeline, so that the returned dirt of the equipment can be effectively collected after the equipment is stopped, and the dirt attached to the suction pipeline is prevented from returning to the surface to be cleaned due to the action of gravity, and secondary pollution is caused to the surface to be cleaned. The storage space is defined by the lower housing of the cleaning head. In one embodiment, the horizontal section and the lower housing are integrally molded, and the storage space is formed by a portion of the horizontal section being depressed downward.

With continued reference to figures 39-41, the bottom wall of the cleaner head 3 is provided with a through hole which communicates with the storage space 328 and in which a sealing cap 392 is provided to seal the storage space from the outside. After the sealing cover 392 is opened, the user can clean the storage space 328 and the suction pipe 324, so that the cleanness in the pipe can be kept, and the phenomenon that more dirt is attached to the inner wall of the suction pipe 324 to generate peculiar smell is avoided.

Of course, in other embodiments, the horizontal segment 326 and the storage space 328 may also be separate. When the storage space 328 is defined by a single part, the part may be individually removed for cleaning. When the parts defining the storage space are removed, the user can clean the suction duct through the position.

In one embodiment, the suction duct includes a horizontal section 326 and an inclined section 327 arranged in sequence along the airflow direction. The horizontal section 326 is not intended to be a feature of the present invention, and may be disposed at a substantially horizontal angle, but is not intended to be at an excessive angle. The inclined section 327 means that the section of pipe is inclined upwards relative to the horizontal section, and through the inclined section, the dirt enters the waste tank or enters the pipe communicated with the waste tank. Because the slope section slope sets up, along the vertical direction slope section bottom and top have, in order to make the remaining dirty quilt of whole slope section collect, storage space sets up in the bottom of slope section. Further, the storage space is provided at an intersection of the horizontal section and the inclined section. The bottom wall of the horizontal section is gradually inclined downwards in the direction of the air flow, i.e. the distance from the suction nozzle to the storage space, and the horizontal section is gradually inclined downwards in the direction of the air flow, so that residual dirt in the horizontal sections 36 can also be effectively collected in the storage space 328.

Rolling brush driving assembly

Referring to fig. 42-43, fig. 42 is a schematic structural diagram of a driving assembly in an embodiment. Fig. 43 is a cross-sectional view of the drive assembly of fig. 42. The rolling brush driving assembly 8 comprises a driving motor 81, a speed reducing mechanism 82 and a transmission mechanism 83, the speed reducing mechanism 82 comprises a planetary gear train in transmission connection with an output shaft of the motor, the planetary gear train comprises a sun gear in transmission connection with a transmission shaft, a gear ring fixed relative to the sun gear and at least one planetary gear arranged between the sun gear and the gear ring, a driving wheel in transmission connection with the planetary gear, a driven wheel in transmission connection with the driving wheel, the driving wheel and the driven wheel can adopt the same model, the driving wheel and the driven wheel output power to the corresponding rolling brushes through respective transmission mechanisms, and the speed reducing mechanism is arranged in an installation space limited by a front shell and a rear shell.

The transmission mechanism 83 comprises an output gear in transmission connection with the driving wheel or the driven wheel, a transmission gear in transmission connection with the rolling brush, and a belt for transmission connection of the output gear and the transmission gear, the transmission gear is in transmission connection with one end of the rolling brush through a petal-shaped transmission piece,

the transmission mechanism 83 further comprises a transmission bracket 831, the transmission bracket 831 comprises a butt joint part 832 butted with the rear shell and a mounting part 833 limited with a transmission space, the butt joint part 832 and the mounting part 833 can be integrally molded, a shock absorption pad can be arranged on the periphery of the butt joint part and/or the mounting part, and the shock absorption effect is achieved by the contact of the shock absorption pad and the upper shell and/or the lower shell of the cleaning head.

While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims

1. A surface cleaning apparatus, comprising

A main body defining a suction duct therein;

2. A surface cleaning apparatus as claimed in claim 1,

still include with the sewage case of suction pipeline fluid intercommunication, the sewage case install to in the sewage case installation cavity that the main part was prescribed a limit to, the main part still seted up with the exhaust hole of sewage case installation cavity intercommunication, the exhaust hole is used for with cooling air current guides to the sewage case installation cavity.

3. A surface cleaning apparatus as claimed in claim 2,

the suction airflow and the cooling airflow are converged at the upstream of the impeller of the motor assembly to form mixed airflow, and the mixed airflow flows through the impeller and is discharged to the sewage tank installation cavity through the air outlet channel.

4. A surface cleaning apparatus as claimed in claim 1,

still including the water purification case that is used for supplying the cleaning solution, the water purification case install in the main part is prescribed a limit the water purification case installation cavity in, the main part still seted up with the exhaust hole of water purification case installation cavity intercommunication, the exhaust hole be used for with cooling air flow guides to the water purification case installation cavity.

5. A surface cleaning apparatus as claimed in claim 4,

the suction airflow and the cooling airflow are converged at the upstream of the impeller of the motor assembly to form mixed airflow, and the mixed airflow flows through the impeller and then is discharged to the water purification tank installation cavity through the air outlet channel.

6. A surface cleaning apparatus as claimed in claim 3,

and the bottom wall of the sewage tank installation cavity is provided with a water leakage hole for guiding at least part of liquid in the mixed airflow to a surface to be cleaned and/or a cleaning head of the surface cleaning equipment.

7. A surface cleaning apparatus as claimed in claim 1,

the main part includes preceding frame and after-frame, preceding frame is injectd there are sewage case installation cavity and electronic component installation cavity, the after-frame is injectd there is the water purification case installation cavity, preceding frame with the after-frame is injectd jointly the motor element installation cavity.

8. A surface cleaning apparatus as claimed in claim 7,

at least part of the electronic component installation cavity is positioned in front of the water purifying tank installation cavity in the advancing direction of the surface cleaning equipment, and the motor assembly installation cavity is positioned above the water purifying tank installation cavity and below the sewage tank installation cavity in the vertical direction.

9. A surface cleaning apparatus as claimed in claim 1,

the motor assembly comprises a motor shell and a dry-wet motor arranged in the motor shell, the motor shell comprises an upper shell and a lower shell, and an air inlet channel and an air outlet channel are limited by the lower shell.

10. A surface cleaning apparatus as claimed in claim 9,

along the air flow direction, at least part the sectional area of air inlet channel reduces gradually, the rectangular form passageway of air-out passageway, air inlet channel with the air-out passageway all with the sewage case installation cavity intercommunication that the main part was injectd.