WO2023137883A1

WO2023137883A1 - Floor brush and floor cleaning device

Info

Publication number: WO2023137883A1
Application number: PCT/CN2022/086709
Authority: WO
Inventors: 杨勇
Original assignee: 深圳市杉川机器人有限公司
Priority date: 2022-01-19
Filing date: 2022-04-13
Publication date: 2023-07-27
Also published as: EP4285804A1; US20230397787A1; CN217390626U

Abstract

A floor cleaning device, which comprises: a main body (1) and a floor brush (3); the floor brush (3) comprises: a front cleaning brush (302) and a rear cleaning brush (303); a front suction opening (304) and a rear suction opening (305) respectively arranged as oriented towards the front cleaning brush (302) and the rear cleaning brush (303); a main suction opening (307); a front flow guide channel (308) that establishes communication between the main suction opening (307) and the front suction opening (304); and a rear flow guide channel (309) that establishes communication between the main suction opening (307) and the rear suction opening (305); where central axes of the front flow guide channel (308) and the rear flow guide channel (309) intersect in the front flow guide channel (308).

Description

Floor brushes and scrubbers

Cross References to Related Applications

This application is based on a Chinese patent application with application number 202220143355.6 and a filing date of January 19, 2022, and claims the priority of this Chinese patent application. The entire content of this Chinese patent application is hereby incorporated by reference into this application.

technical field

The present application relates to the field of cleaning equipment, in particular to a floor brush and a floor washing machine.

Background technique

As a cleaning appliance, the floor scrubber is provided with a front cleaning brush and a rear cleaning brush inside. When the floor scrubber is working, the front cleaning brush and the rear cleaning brush can move independently, and clean the ground during the rotation.

During the cleaning process of the floor scrubber, the front cleaning brush and the rear cleaning brush will collect the sewage on the ground. In order to absorb the collected sewage, a front diversion channel and a rear diversion channel connected to the main suction port will be set in the scrubber, so that the sewage collected by the front and rear cleaning brushes will be sucked into the main suction port along the front and rear diversion channels respectively. The main suction port absorbs the sewage from the front and rear diversion channels at the same time through the vacuum adsorption machine, which makes the suction inside the front and rear diversion channels insufficient, causing the sewage inside the front and rear diversion channels to flow back to the ground, resulting in the need for secondary cleaning and reducing the user experience.

Therefore, how to reduce the suction loss inside the front and rear diversion channels, so as to improve the efficiency of the main suction inlet to absorb the sewage inside the front and rear diversion channels and prevent the sewage from flowing back to the ground.

Contents of the invention

The purpose of the present application is to provide a floor washing machine. The front and rear suction ports are respectively set facing the front and rear cleaning brushes, which can reduce the suction loss inside the front and rear diversion channels; and the central axes of the front and rear diversion channels intersect in the front diversion channel, and the rear diversion channel is provided with a water storage groove, which can prevent sewage from flowing back to the ground.

The purpose of this application is achieved through the following technical solutions:

A ground brush comprising:

a housing having opposing front and rear portions;

a front cleaning brush disposed on the front of the housing;

a rear cleaning brush disposed at the rear of the housing;

The main suction port, the sewage collected by the front cleaning brush and the rear cleaning brush all enter the main suction port;

A front suction port, the front suction port is set facing the front cleaning brush;

a rear suction port, the rear suction port is arranged facing the rear cleaning brush;

A deflector, the deflector includes a front deflector channel and a rear deflector channel;

The front guide channel communicates with the front suction port and the main suction port to guide the sewage collected by the front cleaning brush to the main suction port;

The rear guide channel communicates with the rear suction port and the main suction port to guide the sewage collected by the rear cleaning brush to the main suction port;

The central axis of the front guide channel intersects with the rear guide channel in the front guide channel.

In one of the embodiments, the angle range between the central axes of the front guide channel and the rear guide channel is greater than 20° and less than 50°.

In one of the embodiments, the angle range between the front guide channel and the ground is greater than 30° and less than 40°.

In one of the embodiments, the range of the included angle between the rear guide channel and the ground is less than 15°.

In one embodiment, the front guide channel includes an inlet of the front guide channel, and a positioning plate is provided near the entrance of the front guide channel; a fixing plate is provided inside the housing, and the positioning plate and the fixing plate are engaged with each other.

In one embodiment, at least one fixing screw hole is provided near the inlet of the front flow guiding channel; at least one fixing screw hole is arranged on the side of the positioning plate opposite to the inlet of the front guiding channel.

In one of the embodiments, the end of the rear diversion channel communicating with the main suction port has a corner structure, and a water storage groove is formed in the corner structure.

In one embodiment, the radian angle of the water storage groove ranges from more than 60° to less than 100°.

In one embodiment, the air guide is a three-way air guide, and the main suction port, the front air guide channel and the rear air guide channel are all arranged on the three-way air guide.

In one embodiment, the three-way air guide includes a main body and a cover; an opening is provided on a side of the main body, and the cover is used to block the opening.

The purpose of the application is also achieved through the following technical solutions:

A floor washing machine, which includes a handle, a main body and a ground brush located at one end of the main body;

Described ground brush comprises:

a housing having opposing front and rear portions;

a front cleaning brush disposed on the front of the housing;

a rear cleaning brush disposed at the rear of the housing;

A front guide channel, one end of the front guide channel is connected to the main suction port, and the other end of the front guide channel is connected to the front suction port, and is used to guide the sewage collected by the front cleaning brush to the main suction port;

A rear diversion channel, one end of the rear diversion channel is connected to the main suction port, and the other end of the rear diversion channel is connected to the rear suction port, for guiding the sewage collected by the rear cleaning brush to the main suction port;

Described ground brush comprises:

a housing having opposing front and rear portions;

a front cleaning brush disposed on the front of the housing;

a rear cleaning brush disposed at the rear of the housing;

The central axis of the front guide channel and the rear guide channel intersect in the front guide channel, and the ground brush also includes a three-way guide; the main suction port, the front guide channel, and the rear guide channel are all arranged on the three-way guide.

In one embodiment, the front guide channel includes an inlet of the front guide channel, and a positioning plate is arranged vertically near the entrance of the front guide channel; a fixing plate is provided inside the housing, and the positioning plate and the fixing plate are engaged with each other.

In one embodiment, a first sealing ring is provided between the front flow guiding channel and the front suction port, and a second sealing ring is provided between the rear guiding channel and the rear suction port.

Compared with the prior art, the present application has the following beneficial effects:

The floor washing machine provided by this application is equipped with front and rear suction ports facing the front and rear cleaning brushes respectively, which can reduce the suction loss inside the front and rear diversion channels; and the central axes of the front and rear diversion channels intersect in the front diversion channel, and the rear diversion channel is provided with water storage grooves, which can prevent sewage from flowing back to the ground.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other accompanying drawings can also be obtained based on these drawings without creative work. in:

Fig. 1 is a schematic structural view of a floor washing machine provided by the present application.

Fig. 2 is a schematic side view of the structure of the three-way guide of the scrubber shown in Fig. 1 .

Fig. 3 is a structural schematic diagram of a disassembled state of the three-way guide member of the scrubber shown in Fig. 1 .

Reference signs: 1, main body; 2, handle; 3, ground brush; 301, shell; 302, front cleaning brush; 303, rear cleaning brush; 304, front suction port; 305, rear suction port; 306, three-way guide; 307, main suction port; 308, front guide channel; 4. The first sealing ring; 3085, fixing screw holes; 30821, the first step structure; 30831, the second step structure; 3091, the entrance of the rear diversion channel; 3092, the second sealing ring; 3093, the water storage groove; 3061, the main body; 3062, the cover body;

Detailed ways

In order to make the above purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the convenience of description, only some structures related to the present application are shown in the drawings but not all structures. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

Referring to FIG. 1 to FIG. 3 , the floor scrubber provided by an embodiment of the present application includes a main body 1 , a handle 2 , and a floor brush 3 . One end of the main body 1 is rotatably connected to the handle 2, and the other end is provided with a ground brush 3. The user drives the ground brush 3 to move on the ground by holding the handle 2 .

The floor brush 3 includes a housing 301 , a front cleaning brush 302 and a rear cleaning brush 303 . The housing 301 has opposing front and rear parts. A front cleaning brush 302 and a rear cleaning brush 303 are provided at the front and rear of the housing 301, respectively. The front cleaning brush 302 and the rear cleaning brush 303 are drivingly connected with a motor (not shown in the figure) respectively, and under the drive of the motor, the front cleaning brush 302 and the rear cleaning brush 303 rotate to clean the ground by rolling.

The floor brush 3 also includes a front suction port 304 and a rear suction port 305 respectively facing the front cleaning brush 302 and the rear cleaning brush 303 . The front suction port 304 and the rear suction port 305 are generally trumpet-shaped as a whole, and one end with a larger opening faces the front cleaning brush 302 and the rear cleaning brush 303 respectively. The front suction port 304 and the rear suction port 305 are used to absorb the sewage attached to the surface during the cleaning process of the front cleaning brush 302 and the rear cleaning brush 303 respectively. The front suction port 304 and the rear suction port 305 can independently absorb the front cleaning brush 302 and the rear cleaning brush 303, reduce the suction loss to the front cleaning brush 302 and the rear cleaning brush 303, and prevent sewage from flowing back to the ground.

The ground brush 3 is also provided with a three-way guide 306 in the space between the front cleaning brush 302 and the rear cleaning brush 303 . The three-way air guide 306 includes a main suction port 307 , a front air guide channel 308 and a rear air guide channel 309 . The main suction port 307 is arranged above the three-way guide 306, and is in sealing connection with a vacuum suction machine (not shown in the figure) inside the ground brush 3 . When the vacuum adsorption machine is working, negative pressure suction is applied to the inside of the three-way guide 306 through the main suction port 307 to absorb the sewage collected by the front cleaning brush 302 and the rear cleaning brush 303, and transport it to the sewage tank inside the scrubber for collection.

One end of the front guide channel 308 is connected to the main suction port 307 , and the other end is connected to the front suction port 304 , and is used to guide the sewage collected by the front cleaning brush 302 to the main suction port 307 . A first sealing ring 3084 is provided at the entrance 3081 of the front flow guide channel 308 that communicates with the front suction port 304, so as to realize the sealing connection between the front flow guide channel 308 and the front suction port 304, and prevent sewage from leaking at the interface between the front flow guide channel 308 and the front suction port 304. The first sealing ring 3084 can be but not limited to be a sealing silicone ring.

The range of the included angle between the front guide channel 308 and the ground is greater than 30° and less than 40°, preferably 35°. The above-mentioned included angle range can ensure that the sewage is quickly transported to the main suction port 307 in the front flow guide channel 308, and prevent the sewage backflow caused by the front flow guide channel 308 being too inclined relative to the ground.

A positioning plate 3082 is arranged vertically near the inlet 3081 of the front guide channel 308 . A fixing plate 3083 is provided inside the housing 301 at a position corresponding to the positioning plate 3082 . The positioning plate 3082 and the fixing plate 3083 are engaged with each other, so that the three-way guide 306 is integrally fixed in the housing 301, ensuring that the front guide channel 308 and the rear guide channel 309 are aligned and connected with the front suction port 304 and the rear suction port 305 respectively. The top of the positioning plate 3082 is provided with a first stepped structure 30821, and the bottom of the fixing plate 3083 is provided with a second stepped structure 30831. The first stepped structure 30821 and the second stepped structure 30831 are aligned and engaged with each other, so that the positioning plate 3082 and the fixing plate 3083 are engaged and fixed.

The front guiding channel 308 is further provided with at least one fixing screw hole 3085 near the inlet 3081 of the front guiding channel. At least one fixing screw hole 3085 is disposed on a side of the positioning plate 3082 opposite to the inlet 3081 of the front guide channel. After the positioning plate 3082 and the fixing plate 3083 are aligned and engaged with each other, the bolt passes through the fixing screw hole 3085 and is threadedly connected with the housing 301 , so that the three-way flow guide 306 is integrally installed in the housing 301 .

One end of the rear guide channel 309 is connected to the main suction port 307 , and the other end is connected to the rear suction port 305 , for guiding the sewage collected by the rear cleaning brush 303 to the main suction port 307 . A second sealing ring 3092 is provided at the rear diversion channel inlet 3091 where the rear diversion channel 309 communicates with the rear suction port 305, so as to realize the sealed connection between the rear diversion channel 309 and the rear suction port 305, and prevent sewage from leaking at the interface between the rear diversion channel 309 and the rear suction port 305. The second sealing ring 3092 can be but not limited to be a sealing silicone ring.

The range of the included angle between the rear diversion channel 309 and the ground is less than 15°, preferably 10°. The above included angle range can prevent the sewage from being quickly transported to the main suction port 307 in the rear diversion channel 309 , and prevent the sewage backflow caused by the rear diversion channel 309 being too inclined relative to the ground.

One end of the rear diversion channel 309 communicating with the main suction port 307 has a corner structure, and a water storage groove 3093 is formed in the corner structure. When the washing machine stops working, a certain amount of sewage will remain inside the rear diversion channel 309, and the residual sewage will be stored in the water storage groove 3093, effectively preventing the sewage from flowing back to the ground. The water storage groove 3093 is in the shape of an arc groove as a whole, and the corresponding arc angle a of the water storage groove 3093 extending in the corner structure is greater than 60° and less than 100°, preferably 90°. By setting the water storage groove 3093 to have a radian angle within the above range, the space of the corner structure can be fully utilized and the water storage space of the water storage groove 3093 can be increased.

In addition, the central axes of the front guide channel 308 and the rear guide channel 309 intersect in the front guide channel 308 . When the washing machine stops working, the residual sewage in the front diversion channel 308 will flow into the rear diversion channel 309 and be stored in the water storage groove 3093, so as to prevent the sewage from the front diversion channel 308 from flowing back to the ground and improve the transmission efficiency of sewage from the front diversion channel 308 and the rear diversion channel 309 to the main suction port 307.

The range of the included angle between the central axes of the front guide channel 308 and the rear guide channel 309 is greater than 20° and less than 50°, preferably 30°. By setting the angle between the central axes of the front diversion channel 308 and the rear diversion channel 309 to the above-mentioned range, the flow velocity of the sewage in the connection and junction area between the front diversion channel 308 and the rear diversion channel 309 and the main suction port 307 can be increased, and the backflow of sewage in the communication junction area can be avoided.

In one embodiment, the three-way air guide 306 includes a main body 3061 and a cover 3062 . The main suction port 307 , the front flow guide channel 308 and the rear flow guide channel 309 are arranged inside the main body part 3601 . The main body portion 3061 can be made by plastic injection molding. An opening 3063 is disposed on one side of the three-way guide 306 . The shape of the cover part 3062 matches the opening 3063 and is used for sealing the opening 3063 to prevent sewage from leaking from the opening 3063 . The three-way flow guide 306 is a structural member with three-channel openings, and its internal structure is complex. The three-way flow guide 306 is made of two separate components, the main body 3061 and the cover body 3062, which can reduce the manufacturing difficulty and cost of the three-way flow guide 306.

The above is only a specific implementation manner of the present application, and any other improvements made on the premise of the idea of the present application shall be regarded as the protection scope of the present application.

Claims

A ground brush, comprising:

a housing having opposing front and rear portions;

a front cleaning brush disposed on the front of the housing;

a rear cleaning brush disposed at the rear of the housing;

The main suction port, the sewage collected by the front cleaning brush and the rear cleaning brush all enter the main suction port;

A front suction port, the front suction port is set facing the front cleaning brush;

a rear suction port, the rear suction port is arranged facing the rear cleaning brush;

A deflector, the deflector includes a front deflector channel and a rear deflector channel;

The front guide channel communicates with the front suction port and the main suction port to guide the sewage collected by the front cleaning brush to the main suction port;

The rear guide channel communicates with the rear suction port and the main suction port to guide the sewage collected by the rear cleaning brush to the main suction port;

The central axis of the front guide channel intersects with the rear guide channel in the front guide channel.
The ground brush according to claim 1, wherein, the angle range between the central axis of the front guide channel and the rear guide channel is greater than 20° and less than 50°.
The ground brush according to claim 1, wherein the range of the included angle between the front guiding channel and the ground is greater than 30° and less than 40°.
The ground brush according to claim 1, wherein the angle range between the rear guide channel and the ground is less than 15°.
The floor brush according to claim 1, wherein the front flow guide channel includes an entrance of the front flow guide channel, and a positioning plate is provided near the entrance of the front flow guide channel; a fixing plate is provided inside the housing, and the positioning plate and the fixing plate are engaged with each other.
The ground brush according to claim 5, wherein at least one fixing screw hole is provided near the entrance of the front flow guide channel; at least one of the fixing screw holes is provided on the side of the positioning plate opposite to the entrance of the front flow guide channel.
The floor brush according to claim 1, wherein, the end of the rear diversion channel communicating with the main suction port has a corner structure, and a water storage groove is formed in the corner structure.
The floor brush according to claim 7, wherein the range of the radian angle of the water storage groove is greater than 60° and less than 100°.
The floor brush according to claim 1, wherein the flow guide is a three-way flow guide, and the main suction port, the front flow guide channel and the rear flow guide channel are all arranged on the three-way flow guide.
The floor brush according to claim 9, wherein the three-way guide includes a main body and a cover; an opening is provided on a side of the main body, and the cover is used to block the opening.
A floor washing machine, wherein the floor washing machine includes a handle, a main body and a ground brush located at one end of the main body;

Described ground brush comprises:

a housing having opposing front and rear portions;

a front cleaning brush disposed on the front of the housing;

a rear cleaning brush disposed at the rear of the housing;

The main suction port, the sewage collected by the front cleaning brush and the rear cleaning brush all enter the main suction port;

A front suction port, the front suction port is set facing the front cleaning brush;

a rear suction port, the rear suction port is arranged facing the rear cleaning brush;

A front guide channel, one end of the front guide channel is connected to the main suction port, and the other end of the front guide channel is connected to the front suction port, and is used to guide the sewage collected by the front cleaning brush to the main suction port;

A rear diversion channel, one end of the rear diversion channel is connected to the main suction port, and the other end of the rear diversion channel is connected to the rear suction port, for guiding the sewage collected by the rear cleaning brush to the main suction port;

The central axis of the front guide channel intersects with the rear guide channel in the front guide channel.
The washing machine according to claim 11, wherein, the angle range between the central axis of the front guide channel and the rear guide channel is greater than 20° and less than 50°.
The washing machine according to claim 11, wherein the range of the included angle between the front guide channel and the ground is greater than 30° and less than 40°.
The washing machine according to claim 11, wherein, the range of the included angle between the rear diversion channel and the ground is less than 15°.
The floor washing machine according to claim 11, wherein the end of the rear diversion passage communicating with the main suction port is a corner structure, and a water storage groove is formed in the corner structure.
A floor washing machine, wherein the floor washing machine includes a handle, a main body and a ground brush located at one end of the main body;

Described ground brush comprises:

a housing having opposing front and rear portions;

a front cleaning brush disposed on the front of the housing;

a rear cleaning brush disposed at the rear of the housing;

The main suction port, the sewage collected by the front cleaning brush and the rear cleaning brush all enter the main suction port;

A front suction port, the front suction port is set facing the front cleaning brush;

a rear suction port, the rear suction port is arranged facing the rear cleaning brush;

A front guide channel, one end of the front guide channel is connected to the main suction port, and the other end of the front guide channel is connected to the front suction port, for guiding the sewage collected by the front cleaning brush to the main suction port;

A rear diversion channel, one end of the rear diversion channel is connected to the main suction port, and the other end of the rear diversion channel is connected to the rear suction port, for guiding the sewage collected by the rear cleaning brush to the main suction port;

The central axis of the front guide channel and the rear guide channel intersect in the front guide channel, and the ground brush also includes a three-way guide; the main suction port, the front guide channel, and the rear guide channel are all arranged on the three-way guide.
The washing machine according to claim 16, wherein the three-way flow guide includes a main body and a cover; an opening is provided on a side of the main body, and the cover is used to block the opening.
The floor washing machine according to claim 16, wherein the front flow guide channel includes an entrance of the front flow guide channel, and a positioning plate is vertically arranged near the entrance of the front flow guide channel; a fixing plate is provided inside the housing, and the positioning plate and the fixing plate are engaged with each other.
The floor washing machine according to claim 16, wherein the end of the rear diversion passage communicated with the main suction port has a corner structure, and a water storage groove is formed in the corner structure.
The washing machine according to claim 19, wherein the range of the radian angle of the water storage groove is greater than 60° and less than 100°.
The washing machine according to claim 16, wherein a first sealing ring is provided between the front flow guiding channel and the front suction port, and a second sealing ring is provided between the rear guiding channel and the rear suction port.