WO2023123757A1

WO2023123757A1 - Floor brush for floor scrubber and floor scrubber

Info

Publication number: WO2023123757A1
Application number: PCT/CN2022/088004
Authority: WO
Inventors: 龚筱芳
Original assignee: 苏州威摩尔智能科技有限公司
Priority date: 2021-12-31
Filing date: 2022-04-20
Publication date: 2023-07-06
Also published as: CN114129099A

Abstract

A floor brush for a floor scrubber. The floor brush has a front end (1) and a rear end (2), and a scraping strip (3) is provided at the front end (1) of the floor brush; the scraping strip (3) at least has the following two working positions: (i) a water scraping working position: when the floor brush moves backwards, the scraping strip (3) is changed into a basically downward state, and the bottom end of the scraping strip (3) is propped against a cleaned surface (4) so as to scrape water stains on the cleaned surface (4); and (ii) a suspended working position: when the floor brush moves forwards, the scraping strip (3) is in a suspended state, and the bottom end of the scraping strip (3) is far away from the cleaned surface (4). The floor brush is suitable for a household floor scrubber; the scraping strip (3) is provided at the front end (1) of the floor brush, so that water on the cleaned surface (4) can be scraped off when the floor brush moves backwards, and therefore water stain residues are avoided.

Description

A floor brush and a floor scrubber for a floor scrubber

technical field

The invention relates to the technical field of smart home, in particular to a household floor washing machine.

Background technique

In the prior art, scrubbers are generally divided into commercial scrubbers and household scrubbers. Commercial scrubbers are generally used in relatively large factories, garages, shopping malls, supermarkets, etc., while household scrubbers are generally suitable for large areas. Relatively small (generally less than 200 square meters) family.

For the household washing machine, its structure mainly includes the main body of the washing machine and the floor brush. The main body of the washing machine is equipped with a water tank (to supply water to the drum) and a sewage tank (to collect sewage); The device, the drum motor used to control the drum, the suction device and the host motor used to control the suction device; and the ground brush is mainly equipped with a drum and a flow guide channel for cleaning the floor. When working, the liquid spraying device is in the open state and sprays liquid to the cylinder; the cylinder motor is in the open state to make the cylinder rotate; the host motor is in the open state, and the liquid flowing through the cylinder ( Sewage) is sucked from the diversion channel to the suction pipe, and finally flows into the sewage tank. This small household washing machine is widely favored by the public because of its convenience and practicality.

At present, according to user feedback, during the use of the floor washing machine, water stains will remain on the surface to be cleaned (such as the ground, wooden floor, etc.).

In view of the above problems, the bottom of the floor brush of the existing floor washing machine is provided with a rubber scraper, which is used to scrape sewage (and particulate impurities, etc.) into the diversion channel. However, in actual application, it is found that there are two practical problems as follows: (1) only relying on the rubber scraping strip at the bottom of the floor brush cannot completely scrape off the water stains, and there are still residues; one is because the existing rubber scraping strips are relatively soft, As a result, there is a gap between the scraper and the surface to be cleaned, and the sewage cannot be scraped off well, resulting in residual sewage; the second is that when the floor brush is dragged backward, the rubber scraper at the bottom cannot be scraped; (2) due to the rubber The scraper is often turned over and then restored, resulting in a short service life. After a period of frequent use, the rubber scraper is partially broken, peeled off or cracked, leaving a bad experience for users.

Therefore, it is obviously of positive practical significance to develop a new floor brush to achieve better cleaning, avoid sewage residue, and improve user experience.

Contents of the invention

The purpose of the present invention is to provide a household washing machine.

In order to achieve the purpose of the above invention, the technical solution adopted is: a ground brush for a floor washing machine, the ground brush has a front end and a rear end, the front end of the ground brush is provided with a scraping strip; the scraping strip is at least It has the following 2 working positions:

(1) Wiping position: when the ground brush moves backward, the scraping bar becomes basically downward, and the bottom end of the scraping bar is against the surface to be cleaned, so as to scrape off the water stains on the surface to be cleaned;

(2) Suspended working position: when the ground brush moves forward, the scraping strip becomes suspended, and the bottom end of the scraping strip is away from the surface to be cleaned.

In the above, the wiper working position refers to the state in which the wiper strip wipes off water stains; the suspended working position refers to the state in which the wiper strip does not wipe water. Preferably, in the suspended working position, the bottom end of the scraper does not contact the surface to be cleaned. Preferably, the distance between the bottom end of the scraping bar and the surface to be cleaned is 1-15 mm; more preferably 3-10 mm; more preferably 4-8 mm.

In this article, all references to the "forward" and "backward" of the floor brush refer to the movement of the floor brush on a surface (such as the surface to be cleaned), and the "front end" of the floor brush is the frontmost point in the forward direction. The "rear end" of the brush is the most forward in the rearward direction; because, in actual use, the floor brush needs to be moved alternately forwards and backwards to clean.

Preferably, a driving mechanism is also included, and the scraping strip is driven and connected by the driving mechanism to form the above two working positions.

Preferably, the driving mechanism includes at least one balance wheel, and the balance wheel is arranged on at least one side of the scraping strip;

The upper end of the balance wheel is arranged coaxially with the rotating shaft of the scraper, and the lower end surface of the balance wheel is arc-shaped,

When the floor brush moves backward, the lower end surface of the balance wheel is in contact with the surface to be cleaned, and is driven by friction to rotate forward, driving the scraper to the wiper position; when the floor brush moves forward, the pendulum The lower end surface of the wheel rotates backwards under the drive of friction, and drives the scraping strip to reach the suspended working position. The above solution is a more preferred structure, when the scraping bar is facing backward, it is a suspended working position; of course, it can also be set as a suspended working position when the scraping bar is facing forward.

In another corresponding technical solution, the drive mechanism includes an electromagnetic drive component and at least one oscillating member, and the oscillating member is arranged on at least one side of the scraping strip;

The upper end of the oscillating member is arranged coaxially with the rotating shaft of the scraper, and the lower end of the oscillating member is provided with a magnetic component;

When the floor brush moves backward, the lower end of the swinging member is pushed by the electromagnetic driving part, driving the scraper to the wiper position; when the floor brush moves forward, the lower end of the swinging member is pushed by the electromagnetic drive The driving part is pulled to drive the scraper to the suspended working position. Similarly, this solution is a more preferred structure, and the scraping bar is a suspended working position when it is backward; of course, it can also be set as a suspended working position when the scraping bar is facing forward.

Preferably, the driving mechanism further includes a clamping structure, when the ground brush moves backward, when the balance wheel drives the wiper strip to the wiper working position, the clamping structure clamps the balance wheel and/or the wiper strip stay in place.

Preferably, the driving mechanism further includes a position sensor and a controller, and the controller controls and changes the direction of the magnetic field of the electromagnetic driving part according to the signal of the position sensor.

Preferably, at least one of the magnetic components provided on the electromagnetic drive component and the lower end of the swing member is an electromagnetic field device. That is to say, this has multiple schemes, for example, a kind of preferred scheme is: electromagnetic drive part adopts electromagnetic field equipment, and the magnetic part of the lower end of balance wheel is permanent magnet; Another kind of scheme is: electromagnetic drive part and The magnetic parts at the lower end of the balance wheel all use electromagnetic field devices. The electromagnetic field equipment here is the prior art, that is, a device that generates a magnetic field by energizing, such as a conductive coil.

Preferably, the magnetic component at the lower end of the balance wheel is a permanent magnet.

Preferably, the rear end of the ground brush is also provided with a rear scraping strip.

Preferably, a roller and a diversion channel are arranged inside the ground brush, and the rear scraping strip is arranged behind the roller, and the entrance of the diversion channel is formed between the roller and the rear scraping strip; The lower end of the scraping strip is a flexible part.

In the above, there is only one drum in the housing, and the drum is located in front of the housing.

The structure of the above-mentioned rear scraping strip (including but not limited to the angle of setting the scraping strip and the width of the extension section, etc.) can also be used for the scraping strip at the front end of the ground brush.

The present invention also claims protection for a floor washing machine, including a floor brush, and the floor brush is the above-mentioned floor brush. The structure of the ground brush is the same as above, and will not be repeated here.

Due to the use of the above-mentioned technical solutions, the present invention has the following advantages compared with the prior art:

1. The present invention has developed a floor brush with a new structure, which is especially suitable for household floor washing machines. By providing a scraper at the front end of the floor brush, the water on the surface to be cleaned can be scraped when the floor brush moves backward, thereby Avoid water stain residue;

2. The present invention has developed a floor brush with a new structure, which is especially suitable for household floor washing machines. By setting a scraper at the front end of the floor brush and a rear scraper at the rear end of the floor brush, two front and rear scrapers are formed. strip structure; when the floor brush moves forward, the water is scraped off by the rear scraper; when the floor brush moves backward, the water is scraped off by the scraper; thus completely solving the problem of residual sewage on the ground and bringing more benefits to users A good user experience makes it easier to achieve commercial success, which obviously has positive practical significance;

3. The present invention is aimed at the rear scraping strip, and maintains the working state of shoveling forward obliquely when moving forward, without turning over, thereby solving the problem of the rubber strip turning over in the prior art. At the same time, by moving the scraping strip The lower end is extended downward to form an interference fit structure with the ground to prevent gaps between the two, and at the same time solve the problem of residual sewage; and greatly improve the service life of the scraper;

4. The product of the present invention has simple structure, low cost, good commercial significance, and is suitable for popularization and application.

Description of drawings

Fig. 1 is a schematic diagram of a wiper working position in Embodiment 1 of the present invention.

FIG. 2 is a sectional view of FIG. 1 .

Fig. 3 is a schematic diagram of the suspended working position in the first embodiment of the present invention.

FIG. 4 is a sectional view of FIG. 3 .

Fig. 5 is a schematic diagram of the wiper working position in the second embodiment of the present invention.

FIG. 6 is a sectional view of FIG. 5 .

Fig. 7 is a schematic diagram of the suspended working position in the second embodiment of the present invention.

FIG. 8 is a sectional view of FIG. 7 .

Among them: 1. front end; 2. rear end; 3. scraping strip; 4. surface to be cleaned; 5. balance wheel; 6. rear scraping strip; 7. roller; 8. swinging part.

Detailed ways

The present invention will be further described in conjunction with embodiment:

Embodiment one

Referring to Figures 1 to 4, a ground brush for a floor washing machine has a front end 1 and a rear end 2, the front end of the ground brush is provided with a scraper 3; the scraper has at least The following 2 working positions:

(1) Wiping position: when the ground brush moves backward, the scraping bar becomes basically downward, and the bottom end of the scraping bar is against the surface to be cleaned to scrape off the water stains on the surface to be cleaned ;

It also includes a driving mechanism, which includes two balance wheels 5, and the balance wheels are arranged on both sides of the scraping strip; the upper end of the balance wheel is coaxially arranged with the rotating shaft of the scraping strip, and the balance wheel The lower end surface is arc-shaped,

When the floor brush moves backward, the lower end surface of the balance wheel is in contact with the surface to be cleaned, and is driven by friction to rotate forward, driving the scraper to the wiper position, see Figure 2; when the floor brush moves forward , the lower end surface of the balance wheel is driven by friction to rotate backwards, driving the scraper to reach the suspended working position, see FIG. 4 .

The driving mechanism also includes a clamping structure. When the floor brush moves backwards and the balance wheel drives the scraper to the wiper working position, the clamping structure fixes the balance wheel and the scraper in their original positions. (Clamping structure is not shown in the figure)

In the above, the wiper working position refers to the state in which the wiper strip wipes off water stains; the suspended working position refers to the state in which the wiper strip does not wipe water. In this embodiment, in the suspended working position, the bottom end of the scraper does not contact the surface to be cleaned, and the distance between the bottom end of the scraper and the surface to be cleaned is 5 mm.

Preferably, the rear end of the ground brush is also provided with a rear scraping strip 6 .

Preferably, the ground brush is provided with a roller 7 and a guide channel, the rear scraper is arranged behind the roller, and the entrance of the guide channel is formed between the roller and the rear scraper; The lower end of the rear scraping strip is a flexible part.

In the above, there is only one drum 7 in the housing, and the drum is located in front of the housing. In the figure, the cylinder of the floor brush exceeds the surface to be cleaned, which means that the bristles on the cylinder have a certain degree of bulkiness, so the bristles will be compressed in actual use.

In actual use, the floor brush needs to alternately move forward and backward for thorough cleaning. When the ground brush moves forward, the rear scraping strip plays the role of scraping off water stains, and at this time the front scraping strip is in the suspended working position; when the floor brush moves backward, the front scraping strip plays the role of scraping off water stains. Thereby completely solving the problem of ground sewage residue.

Embodiment two

Referring to Figures 5 to 8, a ground brush for a floor washing machine has a front end 1 and a rear end 2, the front end of the ground brush is provided with a scraper 3; the scraper has the following 2 working positions:

It also includes a driving mechanism, and the scraping strip is driven and connected by the driving mechanism to form the above two working positions. The driving mechanism includes an electromagnetic drive part and two swinging parts 8, and the swinging parts are arranged on both sides of the scraping bar; the upper end of the swinging part is coaxially arranged with the rotating shaft of the scraping bar, and the The lower end is provided with a magnetic part (the present embodiment adopts a permanent magnet);

When the floor brush moves backward, the lower end of the swinging member is pushed by the electromagnetic driving part, driving the scraper to the wiper position; when the floor brush moves forward, the lower end of the swinging member is pushed by the electromagnetic drive The driving part is pulled to drive the scraper to the suspended working position.

The driving mechanism also includes a position sensor and a controller, and the controller controls and changes the direction of the magnetic field of the electromagnetic driving part according to the signal of the position sensor. Of the two magnetic components provided on the electromagnetic driving part and the lower end of the pendulum, the former is an electromagnetic field device and the latter is a permanent magnet. The electromagnetic field equipment here is the prior art, that is, a device that generates a magnetic field by energizing, such as a conductive coil.

In this embodiment, as shown in FIG. 5 , the direction of the magnetic field of the electromagnetic drive part repels the swinging member 8, thereby pushing the swinging member and the wiper strip to be in the wiper position; as shown in FIG. 7 , the direction of the magnetic field of the electromagnetic drive part and The pendulum 8 attracts each other, thereby pulling the pendulum and the scraper to be in the suspended working position. The direction of the magnetic field of the electromagnetically driven part is adjusted by the direction of the current (this is prior art).

In the above, the wiper working position refers to the state in which the wiper strip wipes off water stains; the suspended working position refers to the state in which the wiper strip does not wipe water. In this embodiment, in the suspended working position, the bottom end of the scraping bar does not contact the surface to be cleaned, and the distance between the bottom end of the scraping bar and the surface to be cleaned is 4 mm.

In actual use, the floor brush needs to alternately move forward and backward for thorough cleaning. When the ground brush moves forward, the rear scraper strip can scrape off water stains, and the front scraper strip is in the suspended working position; when the floor brush moves backward, the front scraper strip can scrape off water stains. Thereby completely solving the problem of ground sewage residue.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

A ground brush for a floor washing machine, the ground brush has a front end and a rear end, and is characterized in that: the front end of the ground brush is provided with a scraping strip; the scraping strip has at least the following two working positions:

(1) Wiping position: when the ground brush moves backward, the scraping bar becomes basically downward, and the bottom end of the scraping bar is against the surface to be cleaned, so as to scrape off the water stains on the surface to be cleaned;

(2) Suspended working position: when the ground brush moves forward, the scraping strip becomes suspended, and the bottom end of the scraping strip is away from the surface to be cleaned.
The floor brush for a floor washing machine according to claim 1, further comprising a driving mechanism, the scraping strip is driven and connected by the driving mechanism to form the above two working positions.
The floor brush for a floor washing machine according to claim 2, wherein the driving mechanism includes at least one balance wheel, and the balance wheel is arranged on at least one side of the scraping bar;

The upper end of the balance wheel is arranged coaxially with the rotating shaft of the scraper, and the lower end surface of the balance wheel is arc-shaped,

When the floor brush moves backward, the lower end surface of the balance wheel is in contact with the surface to be cleaned, and is driven by friction to rotate forward, driving the scraper to the wiper position; when the floor brush moves forward, the pendulum The lower end surface of the wheel rotates backwards under the drive of friction, and drives the scraping strip to reach the suspended working position.
The floor brush for a floor washing machine according to claim 2, characterized in that: the driving mechanism includes an electromagnetic driving part and at least one oscillating member, and the oscillating member is arranged on at least one side of the scraping bar;

The upper end of the oscillating member is arranged coaxially with the rotating shaft of the scraper, and the lower end of the oscillating member is provided with a magnetic component;

When the floor brush moves backward, the lower end of the swinging member is pushed by the electromagnetic driving part, driving the scraper to the wiper position; when the floor brush moves forward, the lower end of the swinging member is pushed by the electromagnetic drive The driving part is pulled to drive the scraper to the suspended working position.
The floor brush for a floor washing machine according to claim 3, characterized in that: the driving mechanism also includes a clamping structure, and when the floor brush moves backward, the balance wheel drives the scraper to reach the wiper. When in position, the locking structure locks the balance wheel and/or the scraper in place.
The floor brush for a floor washing machine according to claim 4, wherein the driving mechanism further includes a position sensor and a controller, and the controller controls and changes the electromagnetic driving part according to the signal of the position sensor direction of the magnetic field.
The floor brush for a floor washing machine according to claim 4, wherein at least one of the magnetic components provided at the lower end of the electromagnetic drive part and the swing member is an electromagnetic field device.
The floor brush for a floor washing machine according to claim 1, wherein the rear end of the floor brush is also provided with a rear scraping strip.
The floor brush for a floor washing machine according to claim 8, wherein a roller and a guide channel are arranged inside the floor brush, the rear scraping strip is arranged behind the roller, and the roller and The inlet of the guide channel is formed between the rear scraping strips; the lower end of the rear scraping strips is a flexible part.
A floor washing machine, comprising a floor brush, characterized in that: the floor brush is the floor brush according to any one of claims 1-9.