CN115251779B

CN115251779B - Surface cleaning apparatus

Info

Publication number: CN115251779B
Application number: CN202211003502.0A
Authority: CN
Inventors: 戴逢焱
Original assignee: Suzhou Simple Youwei Technology Co Ltd
Current assignee: Suzhou Simple Youwei Technology Co Ltd
Priority date: 2021-08-15
Filing date: 2021-08-15
Publication date: 2023-06-09
Anticipated expiration: 2041-08-15
Also published as: CN113633231A; CN113633231B; CN115251779A; WO2023020277A1

Abstract

A cleaning head in a surface cleaning apparatus includes a housing adapted to move over a surface to be cleaned, the housing having a cleaning member disposed thereon configured to clean the surface to be cleaned. The cleaning head further comprises a first rolling brush arranged in a first cavity defined by the shell and rotating around a first rotation axis, wherein a wiper is arranged on the surface of the first rolling brush and used for cleaning the surface to be cleaned by the cleaning piece again. The housing is disposed on a wiper strip in interference fit with the wiper, wherein the wiper strip is configured to wipe at least a portion of the dirt attached to the wiper to prevent at least a portion of the dirt from entering the first chamber. By adopting the structure, the water stain on the ground can be effectively wiped, and meanwhile, the dirt which is missed on the surface to be cleaned can be prevented from entering the first chamber and then not being treated in time.

Description

Surface cleaning apparatus

The present application is a divisional application of chinese patent application with application number 202110933828.2, application number 2021, month 08 and 15, entitled "a cleaning head and surface cleaning apparatus".

Technical Field

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

Background

With the improvement of the technology level, the cleaning equipment is more and more intelligent. The floor washing machine can collect dirt and wet clean the surface to be cleaned, so that the market share is improved. At present, most floor washers on the market adopt a rolling brush mode, namely, after cleaning liquid is sprayed to the rolling brush, the rolling brush rotates to clean the surface to be cleaned, scraping strips are arranged in a rolling brush cavity, and dirt is scraped out of the rolling brush and then is sucked into a recovery box by suction air flow.

At present, the floor washing machine has a problem that water stains are left on the floor and a certain amount of dirt is not collected in the recovery box, so that a user is required to clean the floor separately.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides the cleaning head which can effectively clean the cleaned surface for the second time, so that the surface is cleaner.

According to a first aspect of the present invention there is provided a surface cleaning apparatus comprising a main machine and a cleaning head pivotally connected to the main machine;

wherein the cleaning head comprises:

a housing adapted to move over a surface to be cleaned, defining a first chamber;

a cleaning rolling brush provided to the housing and configured to clean the surface to be cleaned;

a first rolling brush arranged in the first cavity and rotating around a first rotation axis, wherein a wiper is arranged on the surface of the first rolling brush and is used for cleaning the surface to be cleaned by the cleaning rolling brush again; the first rolling brush is arranged behind the cleaning rolling brush along the advancing direction;

a wiper strip disposed on the housing in an interference fit with the wiper, wherein the wiper strip is configured to wipe at least a portion of the dirt attached to the wiper to prevent the at least a portion of the dirt from entering the first chamber; the scraping strip is arranged in front of the first rotation axis along the advancing direction;

the surface cleaning apparatus further includes a recovery tank for collecting dirt cleaned by the cleaning roller brush;

the scraping strip is configured to at least partially retain dirt that is not cleaned by the cleaning roller brush on a surface to be cleaned between the cleaning roller brush and the first roller brush to ensure that the cleaning head, during rearward movement, retains at least part of dirt left on the surface to be cleaned by the cleaning roller brush back into the recovery tank.

Optionally, the surface cleaning apparatus further comprises a cleaning liquid supply system for spraying the cleaning liquid onto the surface to be cleaned or/and the cleaning roller brush.

Optionally, the wiper strip is lower than the first rotation axis in a vertical direction.

Optionally, the cleaning roller brush is disposed within a second chamber defined by the housing and rotates about a second axis of rotation.

Optionally, the second chamber communicates with a first recovery tank located at the cleaning head, the cleaning roller brush pushing at least part of the dirt on the surface to be cleaned into the first recovery tank.

Optionally, a protrusion is disposed in the first chamber, and the protrusion is in interference fit with the wiping piece of the first rolling brush.

Optionally, the protrusion is disposed above the first axis of rotation.

Optionally, the scraping strip and the shell are integrally formed.

Optionally, the scraping strip is disposed on the bottom wall of the housing.

Optionally, the cleaning head further comprises a cover plate, the cover plate and the shell can jointly form a first chamber, a downward protrusion is arranged on one side, facing the first rolling brush, of the cover plate, and the protrusion is in interference fit with a wiper of the first rolling brush.

The invention provides a surface cleaning apparatus, a cleaning head in the surface cleaning apparatus comprising a housing adapted to move over a surface to be cleaned, the housing being provided with cleaning elements configured to clean the surface to be cleaned. The cleaning head further comprises a first rolling brush arranged in a first cavity defined by the shell and rotating around a first rotation axis, wherein a wiper is arranged on the surface of the first rolling brush and used for cleaning the surface to be cleaned by the cleaning piece again. The housing is disposed on a wiper strip in interference fit with the wiper, wherein the wiper strip is configured to wipe at least a portion of the dirt attached to the wiper to prevent at least a portion of the dirt from entering the first chamber. By adopting the structure, the water stain on the ground can be effectively wiped, and meanwhile, the dirt which is missed on the surface to be cleaned can be prevented from entering the first chamber and then not being treated in time.

Drawings

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

FIG. 2 is a schematic view of the cleaning head of FIG. 1 with the cover plate removed;

FIG. 3 is a schematic view of a housing of a cleaning head according to an embodiment of the present invention;

FIG. 4 is a schematic view of the cleaner head of FIG. 1 at another angle;

FIG. 5 is a schematic cross-sectional view of the cleaning head of FIG. 1 in the direction B;

FIG. 6 is a partial schematic view of a cleaning head in accordance with one embodiment of the invention;

FIG. 7 is a schematic view of a cleaning head walking in an advancing direction in one embodiment;

FIG. 8 is another schematic view of the cleaning head walking in an advancing direction in one embodiment;

FIG. 9 is a schematic view of a cleaning head walking in a reverse direction in one embodiment;

FIG. 10 is another schematic view of the cleaning head walking in a reverse direction in one embodiment;

FIG. 11 is a schematic view of the structure of a surface cleaning apparatus in one embodiment.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the case where a directional instruction is involved in the embodiment of the present invention, the directional instruction is merely used to explain the relative positional relationship, movement condition, etc. between the components in a specific posture, and if the specific posture is changed, the directional instruction is changed accordingly.

In addition, if there is a description of "first", "second", etc. in the embodiments 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 a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application can be understood by those of ordinary skill in the art in a specific context.

Referring to fig. 1-4, fig. 1 is a schematic structural view of a cleaning head according to an embodiment of the present invention. Fig. 2 is a schematic view of the cleaning head of fig. 1 with the cover removed. Fig. 3 is a schematic structural view of a housing of a cleaning head according to an embodiment of the invention. Figure 4 is a schematic view of the cleaner head of figure 1 from another angle. The cleaning head 2 as shown comprises a housing 23 adapted to be moved over a surface to be cleaned, the housing 23 defining a space for mounting components therein, the bottom wall 231 of the housing 23 being provided with rollers 236 (see fig. 4) for facilitating movement of the housing 23, the rollers 236 being either one-way wheels, or universal wheels, or a combination of both wheels. The housing 23 is provided with a cleaning member 21 configured to clean a surface to be cleaned. The cleaning member 21 may be a cleaning structure having a cleaning function such as the suction port 24, the horizontal wiper 222, or the roll brush. When the cleaning member 21 is the suction port 24, dirt is sucked into the recovery tank through the suction port 24, and the suction port 24 may be formed on the housing 23, may be separated from the housing 23, and may be moved with respect to the housing 23. When the cleaning member 21 is a horizontal wiper 222, the horizontal wiper 222 may be reciprocated, rotated, or otherwise realized, without limitation. Referring to fig. 2 and 3, when the wiper 222 is a roll brush, the cleaning roll brush may be mounted into a second chamber 211 defined by the housing 23 and rotated about a second axis of rotation 212. The cleaning roller brush may be driven directly or indirectly by a drive motor, and in one particular embodiment, when the cleaning member 21 is a roller brush, the cleaning roller brush may be driven by a motor via a transmission mechanism, which is not described in detail herein. In other embodiments, different wipers 222 may be combined, for example, the cleaning head 2 may have a suction port 24, and a horizontal wiper 222 or a roller brush may be provided, and the combination is not limited herein.

To achieve wet cleaning, the cleaning head 2 is typically provided with a nozzle (not shown) which communicates with a cleaning liquid supply system, which is a relatively common supply system in cleaning devices, and which, not described in detail herein, may be provided on the cleaning head 2 or at other locations in the device, without limitation. The nozzle may be sprayed onto the cleaning member 21, toward the surface to be cleaned, or both the surface to be cleaned and the cleaning member 21.

Referring to fig. 5 and 6, fig. 5 is a schematic cross-sectional view of the cleaning head of fig. 1 in the direction B. Figure 6 is a partial schematic view of a cleaning head in accordance with one embodiment of the present invention. Referring also to fig. 1-4, to ensure that the wet cleaned floor is drier and cleaner, the cleaner head 2 is further provided with a first roller brush 22 disposed within a first chamber 221 defined by the housing 23 and rotatable about a first axis of rotation 223. The first rolling brush 22 can be directly or indirectly driven to rotate by a motor, and the first rolling brush 22 can be driven to rotate by the movement of the roller 236 or other structures when the cleaning head 2 moves on the surface, other common driving structures, such as a pneumatic rolling brush, can be adopted. Of course, it is understood that when the cleaning member 21 is a cleaning roller brush, the cleaning roller brush and the first roller brush 22 may be driven by the same motor through a transmission structure, and the transmission structure may be a common mechanical structure, which will not be described in detail herein. The cleaning roller brush is disposed in the second chamber 211, and is disposed in front of the first roller brush 22 in the traveling direction of the cleaning head 2. The direction of rotation of the cleaning roller brush and the first roller brush 22 may be the same or opposite. In the embodiment shown in the figures, the cleaning roller brush and the first roller brush 22 rotate in opposite directions, and in normal operation the cleaning roller brush rotates in a counter-clockwise direction and the first roller brush 22 rotates in a clockwise direction. The surface of the first roller brush 22 is provided with a wiper 222, and the wiper 222 is used to clean the surface to be cleaned by the cleaning member 21 again. In this embodiment, the wiping member 222 is a fluff structure having water absorbing properties, and of course, the wiping member 222 may be a sponge structure or a sponge-like structure. In this way, the water stain remaining on the floor can be effectively sucked onto the wiper 222, and the drying of the floor can be ensured as much as possible. During cleaning, some residual dirt may be left on the surface to be cleaned due to suction or some other reason. These residual dirt will be rolled up by the first roller brush 22 and, as the roller brush rotates, some of the dirt may become stuck in the chamber. Therefore, a scraping bar 224 is provided around the first rolling brush 22, and specifically, referring to fig. 5 and 6, the scraping bar 224 is detachably installed on the housing 23, and a blocking piece is provided at an upper end of the scraping bar 224 to prevent the scraping bar 224 from being bent. Of course, the scraping strip 224 may also be integrally formed with the housing 23, the scraping strip 224 having an interference fit with the wiper 222, wherein the scraping strip 224 is configured to scrape at least a portion of the dirt (including solid particles and a portion of the liquid adsorbed onto the wiper 222) adhering to the wiper 222 to prevent at least a portion of the dirt from entering the first chamber 221 while maintaining the cleanliness of the wiper. Referring to fig. 7-8, fig. 7 is a schematic illustration of the cleaning head walking in an advancing direction in one embodiment. Fig. 7 shows the first brush being scraped by the scraping strip during forward operation of the cleaning head. Figure 8 is another schematic view of the cleaning head walking in an advancing direction in one embodiment. Fig. 8 shows that the dirt is carried to the a position of the surface to be cleaned so that it moves with the cleaning head without being missed. Specifically, the first roller brush 22 rotates clockwise, the scraping bar 224 is used for scraping at least part of dirt attached to the surface of the first roller brush 22, at least part of dirt falls towards the ground after being scraped off, the dirt falls to the ground during the falling process, the roller brush advances quickly, the part of dirt may be attached to the surface of the first roller brush 22 again, and thus, the missed dirt is pushed forward without being blocked into the cavity during the advancing process of the cleaning head 2, in other words, the dirt which is not cleaned by the cleaning member 21 is always kept between the cleaning member 21 and the first roller brush 22. Referring to fig. 9-10, fig. 9 is a schematic view of the cleaning head walking in a reverse direction in one embodiment. What is shown in figure 9 is that when the cleaner head moves backwards, dirt scraped off by the scraper bar remains on the floor surface and does not move backwards with the cleaner head. Figure 10 is another schematic view of the cleaning head walking in a reverse direction in one embodiment. The view shown in figure 10 is that when the cleaning head moves backwards, the cleaning elements pass over zone a, and dirt left on the floor is recovered into the recovery tank. The rear of the cleaning rolling brush is generally provided with a scraping plate for scooping up dirt in the advancing process, and the dirt is recovered by matching with the cleaning rolling brush. In the backward movement process of the cleaning head, the scraping plate can scrape off the dirt behind to affect the cleaning function, so that the scraping plate can be lifted upwards or retracted in the backward movement process of the cleaning head, and the cleaning rolling brush can conveniently recover the dirt behind.

In a specific embodiment, in order to prevent dirt falling off from the first rolling brush 22 from remaining on the surface to be cleaned, the first rolling brush 22 is moved in a clockwise direction in operation, the scraping strip 224 is disposed in front of the first rotation axis 223 in the advancing direction, and the scraping strip 224 is lower than the first rotation axis 223 in the vertical direction. So arranged, the scraping strip 224 is at a low distance from the ground, the scraped dirt will quickly fall to the ground, then be rolled up again by the first roller brush 22, be scraped off again when passing the scraping strip 224, repeat the falling-rolling-scraping actions, and at least partially retain the dirt not cleaned by the cleaning member 21 between the cleaning member 21 and the first roller brush 22. The dirt is carried forward while ensuring that the dirt does not get stuck in the first chamber 221.

Referring to fig. 6, the cleaning head 2 further includes a cover 225, the cover 225 and the housing 23 together form a first chamber 221, the first roller brush 22 can be removed therefrom after the cover 225 is removed, a downward protrusion 226 is disposed on a side of the cover 225 facing the first roller brush 22, and the protrusion 226 is in interference fit with the wiper 222 of the first roller brush 22 to scrape off the dirt remained on the wiper 222 and keep it in the first chamber.

In one embodiment, the cleaning head 2 may be provided with a first recovery tank for recovering dirt, the second chamber 211 being in communication with the first recovery tank at the cleaning head 2, the cleaning roller brush pushing at least part of the dirt on the surface to be cleaned into the first recovery tank. Further, a structure such as a scraper may be provided around the cleaning roller brush, and dirt attached to the cleaning roller brush may be scraped into the first recovery tank.

In another embodiment, the cleaning head 2 may also be provided with a vacuum assembly to create a suction air flow to retrieve dirt into the recovery tank, the vacuum assembly generally comprising a motor and a fan in communication with a suction nozzle on the cleaning head 2 via a suction conduit.

The cleaning head 2 may be attached to a conventional handle, hand-held cleaner, or may be applied to cleaning products such as an upright cleaner, a bedroom cleaner, or a sweeping robot, without limitation.

Referring to fig. 11, fig. 11 is a schematic view of the structure of a surface cleaning apparatus in one embodiment. The surface cleaning apparatus 100 shown in fig. 11 comprises a main machine 1 and a cleaning head 2 connected to the main machine 1, the cleaning head 2 may be the cleaning head 2 described in any of the above embodiments, the main machine 1 comprises a vacuum assembly (suction source) for generating a suction air flow along a suction duct, the vacuum assembly comprising a motor and a fan, the suction duct being in fluid communication with a suction nozzle provided on the cleaning head 2. In this embodiment, a recovery tank may be provided in the suction duct, and the dirt is recovered into the recovery tank through the suction nozzle by the suction airflow.

With continued reference to fig. 11, and with simultaneous reference to other views, the present invention discloses a surface cleaning apparatus 100 comprising a cleaning head 2 adapted to be moved over a floor surface and a main machine 1 pivotally connected to the cleaning head 2, the main machine 1 being provided with a handle for controlling the direction of travel of the cleaning device by means of the handle. The surface cleaning apparatus 100 further comprises a cleaning liquid supply system for spraying cleaning liquid onto the surface to be cleaned or/and the wiping structure, and a fluid recovery system for recovering soiled and contaminated cleaning liquid from the surface to be cleaned into the recovery tank. The fluid recovery system comprises an evacuation assembly for generating a suction air flow along a suction duct in fluid communication with a suction nozzle provided on the cleaning head 2. The cleaning head 2 comprises a housing 23 and a roller brush, the housing 23 being adapted to move over a surface to be cleaned, defining a first chamber 221. The roller brush comprises a cleaning roller brush and a first roller brush 22, both of which may be provided to a housing 23, which is configured to clean a surface to be cleaned. The cleaning roller brush is disposed in the second chamber 211, and is disposed in front of the first roller brush 22 in the traveling direction of the cleaning head 2. The cleaning roller brush and the first roller brush 22 rotate in opposite directions, and in normal operation, the cleaning roller brush rotates in a counterclockwise direction and the first roller brush 22 rotates in a clockwise direction. The first roller brush 22 is disposed in the first chamber 221 and rotates about a first rotation axis 223, and a surface of the first roller brush 22 is provided with a wiper 222, the wiper 222 being used to clean the surface to be cleaned by the cleaning roller brush again. The cleaning head 2 further comprises a scraper bar 224 provided to the housing 23, the scraper bar 224 being in an interference fit with the wiper 222, wherein the scraper bar 224 is adapted to scrape off at least part of the dirt adhering to the wiper 222 to prevent at least part of the dirt from entering the first chamber 221. The specific installation and location of the scraping strip 224 may be referred to the description of the scraping strip 224 in the above embodiment, and will not be repeated here. When the surface cleaning apparatus is used, after the apparatus is started, the cleaning liquid supply system supplies cleaning liquid to the floor and/or the cleaning roller brush, and at the same time, the user pushes the apparatus forward, the cleaning roller brush (front roller brush) cleans the floor, dirt is recovered into the recovery tank by the suction air flow, and since the first roller brush 22 does not supply the cleaning liquid and is behind the cleaning roller brush, the first roller brush 22 (rear roller brush) wipes the cleaned floor, and some dirt which is not recovered into the recovery tank is carried forward by the first roller brush 22, and a part of dirt is carried forward between the first roller brush 22 and the floor. These dirt will not be missed on the floor which has been cleaned, and when the user pulls the surface cleaning apparatus backwards, the dirt left on the floor will be stationary, rolled up by the cleaning roller brush moving backwards and then recovered by the suction air flow into the recovery tank. It is ensured that the floor is both dry and dirt free.

The invention also provides a cleaning head comprising a housing defining a first chamber;

a first rolling brush disposed in the first chamber and rotated about a first rotation axis, the first rolling brush configured to clean the surface to be cleaned, which has been wet-cleaned, again;

a scraping strip in interference fit with the surface of the first roller brush for scraping at least a portion of the dirt adhering to the first roller brush to prevent the at least a portion of the dirt from entering the first chamber.

In one embodiment, the cleaning head further comprises a cleaning member for wet cleaning of the cleaning surface, the cleaning member being arranged in front of the first roller brush in the direction of advance of the cleaning head.

In one embodiment, the wiper strip is configured to at least partially retain dirt that is not cleaned by the cleaning member between the cleaning member and the first roller brush.

In one embodiment, the first rolling brush moves in a clockwise direction in operation, the scraping strip is arranged in front of the first rotation axis along the advancing direction of the cleaning head, and the scraping strip is lower than the first rotation axis along the vertical direction.

In one embodiment, the cleaning member includes a cleaning roller brush disposed in a second chamber defined by the housing and rotating about a second axis of rotation, the cleaning roller brush and the first roller brush being disposed at both ends of the housing along the direction of movement of the cleaning head, respectively, and the cleaning roller brush and the first roller brush moving in opposite directions.

In one embodiment, the cleaning head further comprises a first recovery tank disposed in the housing, the second chamber is in communication with the first recovery tank, and the cleaning roller brush pushes at least a portion of the dirt on the surface to be cleaned into the first recovery tank.

In one embodiment, the wiper strip is disposed on the bottom wall of the housing.

In one embodiment, the wiper strip and the housing are integrally formed.

Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.

Claims

1. A surface cleaning apparatus comprising a main machine and a cleaning head pivotally connected to the main machine;

wherein the cleaning head comprises:

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

the surface cleaning apparatus further comprises a cleaning liquid supply system for spraying the cleaning liquid onto the surface to be cleaned or/and the cleaning roller brush.

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

the wiper strip is lower than the first rotation axis in the vertical direction.

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

the cleaning roller brush is disposed within a second chamber defined by the housing and rotates about a second axis of rotation.

5. The surface cleaning apparatus of claim 4,

the second chamber communicates with a first recovery tank located at the cleaning head, and the cleaning roller brush pushes at least part of the dirt on the surface to be cleaned into the first recovery tank.

6. A surface cleaning apparatus as claimed in claim 1, wherein,

a protrusion is arranged in the first chamber and is in interference fit with the wiping piece of the first rolling brush.

7. The surface cleaning apparatus of claim 6,

the protrusion is disposed above the first rotational axis.

8. A surface cleaning apparatus as claimed in claim 1, wherein,

the scraping strip and the shell are integrally formed.

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

the scraping strip is arranged on the bottom wall of the shell.

10. A surface cleaning apparatus as claimed in claim 1, wherein,

the cleaning head further comprises a cover plate, a first cavity can be formed by the cover plate and the shell together, downward protrusions are arranged on one side, facing the first rolling brush, of the cover plate, and the protrusions are in interference fit with the wiping pieces of the first rolling brush.