WO2014059926A1

WO2014059926A1 - Ground cleaning device

Info

Publication number: WO2014059926A1
Application number: PCT/CN2013/085292
Authority: WO
Inventors: 冯勇兵
Original assignee: 科沃斯机器人科技(苏州)有限公司
Priority date: 2012-10-17
Filing date: 2013-10-16
Publication date: 2014-04-24
Also published as: CN103767621B; CN103767621A

Abstract

Disclosed is a ground cleaning device, comprising a dust collecting chamber (3), a suction motor (4) and a dust scrapping strip mechanism; the ground cleaning device is provided with a dust suction inlet (120) at the bottom; a rolling brush is accommodated in the dust suction inlet (120); the dust suction inlet (120) communicates with the dust collecting chamber (3) via an air channel (11), and is provided with a dust scrapping strip mechanism at the back side; the dust scrapping strip mechanism is connected to the bottom of the ground cleaning device via a rotary shaft (24), and is also connected to a return element. When the ground cleaning device travels on the ground and encounters higher friction, the dust scrapping strip can perform rotational or telescopic motion to reduce the friction, thus improving the traveling capability of the ground cleaning device.

Description

Floor cleaning device

Technical field

The invention belongs to the technical field of household cleaners, and in particular to a floor cleaning device. Background technique

For the traditional vacuum cleaner, the scraper is fixed on the back side of the nozzle, as shown in Figure 1-2. In order to adapt to the ground environment, such as the steps between the floor tiles and the floor tiles, the general dust strips will be selected. Some softer materials, and the softer the material, the greater the coefficient of friction, affecting the walking speed of the robot. In particular, when a conventional vacuum cleaner passes through a long-haired carpet, the friction between the bottom of the blade and the ground and the lateral resistance of the long hair to the entire blade cause the blade to be subjected to greater resistance and the vacuum cleaner's walking ability to decrease. Summary of the invention

In view of the above problems, an object of the present invention is to provide a floor cleaning device in which a dust strip automatically expands and contracts and/or rotates, reduces frictional resistance between the blade and the ground or other obstacles, and improves the vacuum cleaner. Walking ability.

The floor cleaning device of the invention comprises a dust collecting chamber, a suction motor and a dust strip mechanism. The bottom of the floor cleaning device is provided with a dust suction port, and the roller brush is placed in the dust suction port, and the dust suction port is connected to the dust collecting chamber through the air channel. The suction motor provides a vacuum suction force for the dust collection chamber, and a dust strip mechanism is arranged on the rear side of the dust suction port. The dust strip mechanism is connected to the bottom of the floor cleaning device through the rotating shaft thereof, and the dust strip mechanism is connected to the reset element.

A brush cover is arranged at the suction port, and the brush cover is fixedly connected with the shell of the floor cleaning device, and the dust strip mechanism is connected to the roller cover through the rotating shaft.

In one solution, the scraping strip mechanism is a scraping strip and has a simple structure.

In another aspect, the dust strip mechanism includes a scraper box, a dust strip and a return spring, and the scraper box is provided with a cavity with an opening facing downward, the cavity is for receiving the return spring and at least partially scraping the strip, resetting The two ends of the spring respectively abut against the dust strip and the upper wall of the cavity, and the dust strip mechanism further includes a limiting mechanism for restricting the stroke of the dust strip.

Further, the limiting mechanism includes a boss on the sidewall of the cavity and a latching portion at the top of the dust strip. The dust strip comprises a hard rubber layer and a soft rubber layer, and the upper portion of the dust strip is a hard rubber material layer, and one end of the dust strip contacting the ground is a soft rubber layer.

When the floor cleaning device is in operation, the dust strip mechanism is rotated by the resistance around the rotating shaft.

The resetting element is a reset torsion spring, and the reset torsion spring is sleeved on the rotating shaft, and the two ends of the torsion spring are respectively reset with the scraping strip The mechanism is connected to the brush cover. The dust strip mechanism and the roller brush cover are respectively provided with shaft holes for fixing the rotating shaft.

The dust strip mechanism is disposed at an acute angle to the bottom surface of the floor cleaning device, and the dust strip mechanism is biased toward the roller brush.

When the floor cleaning device of the present invention walks on the ground, if it encounters a step similar to that between the floor tile and the floor tile, the dust strip will automatically expand and contract in the scraper box to reduce the frictional resistance between the scraper and the ground. When encountering a high step or a long-haired carpet, the scraping strip will be counterclockwise rotated by the force of these steps or long-haired carpet to reduce the frictional resistance between the dust strip and the carpet, thereby improving Ground cleaning device walking ability. DRAWINGS

Figure 1 is a perspective view of a conventional floor cleaning device;

Figure 2 is a partial structural view of Figure 1;

Figure 3 is a perspective view of the floor cleaning device of the present invention;

4 is a schematic view showing the explosion of the dust strip mechanism in the floor cleaning device of the present invention;

Figure 5 is a schematic view showing the rotation direction of the scraper box in the floor cleaning device of the present invention after being subjected to an external force;

Fig. 6 is a schematic view showing the rotation direction of the scraper box in the floor cleaning device of the present invention after the external force disappears.

Reference mark:

I. Housing 3. Dust chamber 4. Suction motor 5. Carpet

21. Roller cover 22. Scraper box 23. Dust strip 24. Rotary shaft

25. Reset torsion spring 26. Reset spring 27. Cavity 28. Engagement

II. Air duct 120. Dust suction port

Fig. 1 is a perspective view of a conventional floor cleaning apparatus, and Fig. 2 is a partial structural view of Fig. 1, and an embodiment of the present invention will be described below with reference to Figs.

As shown in FIG. 3, the floor cleaning device of the present invention comprises a dust collecting chamber 3, a suction motor 4 and a dust strip mechanism; the bottom of the floor cleaning device is provided with a dust suction port 120, and the roller brush is placed in the dust suction port 120. The dust suction port 120 communicates with the dust collecting chamber 3 through the air duct 11, the suction motor 4 communicates with the dust collecting chamber 3 and provides a vacuum suction force, and the dust collecting port 120 is provided with a dust strip mechanism on the rear side, and the dust strip mechanism passes The rotating shaft 24 is connected to the bottom of the floor cleaning device. Wherein, the dust strip mechanism is connected to the reset element, and the reset element is used for resetting the dust strip mechanism.

A brush cover 21 is provided at the dust suction port 120, and the roller cover 21 is fixedly coupled to the casing 1 of the floor cleaning device, and the dust bar mechanism is coupled to the roller cover 21 via the rotary shaft 24.

That is to say, the dust strip mechanism can be connected to the bottom of the floor cleaning device via the rotating shaft 24. When vacuuming When the port 120 is further provided with the brush cover 21, the dust strip mechanism is connected to the roller cover 21 via the rotary shaft 24, and the latter connection is easy to install.

The scraping strip mechanism can be a scraping strip, and the structure is relatively simple.

As shown in FIG. 4, in another aspect, the dust strip mechanism is a retractable slider box assembly, including a scraper box 22, a dust strip 23 and a return spring 26, and the scraper box 22 is provided with an opening. a downwardly facing cavity 27 for receiving a return spring 26 and at least a portion of the dust strip 23, the dust strip 23 extending from the opening of the cavity 27, the two ends of the return spring 26 being respectively associated with the dust strip 23 abuts against the upper wall of the cavity 27, the dust strip 23 can be telescopically moved within the cavity 27, and the return spring 26 can reset the wiper strip 23. In addition, the dust strip mechanism also includes a limit mechanism for limiting the travel of the wiper strip.

Specifically, the limiting mechanism includes a boss formed on a sidewall of the cavity 27 and an engaging portion 28 protruding from a top end of the dust strip 23 toward the boss, the engaging portion 28 and the boss Engaged in each other, the dust strip 23 is restrained in the cavity 27. The limiting mechanism can also be a contracted bell or an elastic element connecting the dust strip 23 and the top of the cavity 27.

The dust strip 23 comprises two layers of a hard rubber layer and a soft rubber layer, and the hard rubber layer and the soft rubber layer are injection-molded. The upper portion of the dust strip 23 is a hard rubber material layer so as to be in contact with the return spring 26, and at the same time, the engaging portion 28 is firmly engaged with the boss, and a part of the dust strip 23 contacting the ground is a soft rubber layer. The friction between the dust strip 23 and the ground is reduced.

When the dust strip 23 is not subjected to the resistance, the engaging portion 28 is engaged with the boss. When the dust strip 23 is subjected to the resistance, the return spring 26 is compressed, the engaging portion 28 is disengaged from the boss, and the dust strip 23 is moved in the axial direction of the return spring 26.

The resetting member may employ a reset torsion spring 25, and both ends of the return torsion spring 25 sleeved on the rotating shaft 24 are connected to the dust strip mechanism and the brush cover 21, respectively.

The dust strip mechanism and the brush cover 21 are respectively provided with shaft holes for fixing the rotary shaft 24.

The dust strip mechanism is disposed at an acute angle to the bottom surface of the floor cleaning device, and the dust strip mechanism is biased toward the roller brush to form a sloped slope. When the roller brush rotates, dust is easily swept into the dust collecting chamber 3 along the inclined slope.

As shown in Fig. 5, during the working process of the floor cleaning device, if the long hair material such as the felt 5 needs to be cleaned, the dust strip mechanism is subjected to the resistance, and the dust strip mechanism may simultaneously perform the rotating and telescopic movement, that is, the dust strip. The mechanism rotates counterclockwise about the axis of rotation 24 and the scraping strip 23 performs a contraction movement to reduce the hair resistance experienced by the floor cleaning device, thereby facilitating the movement of the floor cleaning device. The dust strip mechanism may also only perform a movement in which the dust strip mechanism rotates about the rotary shaft 24 when subjected to horizontal resistance. When subjected to vertical resistance, the dust strip 23 may be along the scraper box 22. The axial direction of the return spring 26 moves linearly, that is, in a direction away from the ground.

As shown in Fig. 6, when the horizontal resistance of the dust strip mechanism is lost, the role of the return torsion spring 25 is restored. Next, the dust strip mechanism rotates clockwise around the rotating shaft 24 to return to the original position.

When the vertical direction resistance received by the dust strip mechanism disappears, under the action of the return spring 26, the dust strip 23 can move linearly in the direction of the axis of the return spring 26 in the slider box 22 toward the ground. Movement, reset.

When the floor cleaning device is walking on the ground, the scraping strip 23 automatically moves in the bar box 22 if it encounters a step similar to that between the floor tile and the floor tile. In the case of a high step or a long-haired carpet, the scraping strip mechanism is counterclockwise rotated by the force of these steps or long-haired carpets, thereby reducing the frictional resistance between the scraper and the carpet. Improve the walking ability of the floor cleaning device.

Claims

Claim

A floor cleaning device comprising a dust collecting chamber (3), a suction motor (4) and a dust strip mechanism; a bottom portion of the floor cleaning device is provided with a dust suction port (120), and the roller brush is placed in the dust suction port. The dust suction port (120) is connected to the dust collecting chamber (3) through the air duct (11), and the dust collecting port (120) is provided with a dust strip mechanism on the rear side, wherein the dust strip mechanism passes through the rotating shaft (24). ) Connected to the bottom of the floor cleaning device, the dust strip mechanism is connected to the reset element.

2. The floor cleaning device according to claim 1, wherein: the dust suction port (120) is provided with a brush cover plate (21), a roller cover plate (21) and a floor cleaning device housing (1) ) Fixed connection, the dust strip mechanism is connected to the roller cover (21) via the rotating shaft (24).

3. The floor cleaning apparatus according to claim 1 or 2, wherein the dust strip mechanism is a scraper.

4. The floor cleaning apparatus according to claim 1 or 2, wherein: the dust strip mechanism comprises a scraper box (22), a dust strip (23) and a return spring (26), and the scraper box (22) There is a cavity (27) with an opening facing downward, the cavity (27) is for accommodating the return spring (26) and at least part of the dust strip (23), and the two ends of the return spring (26) are respectively associated with the dust strip ( 23) Abutting against the upper wall of the cavity (27), the dust strip mechanism further includes a limiting mechanism for restricting the stroke of the dust strip (23).

5. The floor cleaning apparatus according to claim 4, wherein: the limiting mechanism comprises a boss located on a side wall of the cavity (27) and a engaging portion (28) at a top end of the dust strip (23) .

6. The floor cleaning device according to claim 5, wherein: the dust strip (23) comprises a hard rubber layer and a soft rubber layer, and the upper portion of the dust strip (23) is a hard rubber layer and a dust strip. (23) One end in contact with the ground is a soft rubber layer.

The floor cleaning device according to claim 1 or 2, wherein: when the floor cleaning device is in operation, the dust strip mechanism is rotated by the action about the rotating shaft (24).

The floor cleaning device according to claim 2, wherein the resetting element is a reset torsion spring (25), the reset torsion spring (25) is sleeved on the rotating shaft (24), and the torsion spring (25) is reset. Both ends are connected to the dust strip mechanism and the roller cover (21).

9. The floor cleaning apparatus according to claim 2, wherein the dust strip mechanism and the roller cover (21) are respectively provided with shaft holes for fixing the rotating shaft (24).

The floor cleaning device according to claim 1 or 2, wherein the dust strip mechanism is disposed at an acute angle to the bottom surface of the floor cleaning device, and the dust strip mechanism is biased toward the roller brush.