WO2020211337A1

WO2020211337A1 - Cleaning tool

Info

Publication number: WO2020211337A1
Application number: PCT/CN2019/116451
Authority: WO
Inventors: 刘海平; 郭露
Original assignee: 天佑电器（苏州）有限公司
Priority date: 2019-04-17
Filing date: 2019-11-08
Publication date: 2020-10-22
Also published as: CN110179403A

Abstract

A cleaning tool, comprising a tool body (20), a fan assembly (22) provided on the tool body (20) and a dust collecting device (24) that communicates gas with the fan assembly (22); the cleaning tool also comprises a rolling brush assembly provided in the tool body (20), the rolling brush assembly comprising a rolling brush (26); the cleaning tool also comprises a lower cover (44) provided on the tool body (20), a scraping strip (46) fixedly provided on the lower cover (44) and a swing arm (48) movably provided on the lower cover (44); the scraping strip (46) and the rolling brush (26) define a channel that communicates gas with the dust collecting device (24). A surface on which the cleaning tool travels is a working surface; once the swing arm (48) contacts the working surface and is pressed against so as to float, the swing arm (48) abuts against the scraping strip (46) to thereby drive the scraping strip (46) to float. The described cleaning tool has low traveling resistance on any working surface, and has a better sealing and dust guiding effect, which greatly improves the dust suction performance.

Description

cleaning tools

Technical field

The invention relates to a cleaning tool.

Background technique

The suction port of the sweeping robot is assembled at the bottom of the machine. In order to ensure the normal walking of the sweeping robot, the lowest end of the suction port needs to be a certain distance from the ground, so that the performance of the suction port will be reduced and dust will be missed.

As shown in Figures 1 and 2, in order to make the suction end of the sweeping robot effectively seal and block dust, the technician adds a scraper 10 at the rear end of the suction. The scraper 10 is fixed on the lower cover 12, and the scraper 10 is also Play the role of guiding dust. In addition, in order to ensure the seal and avoid the leakage of dust, the scraper 10 should be in an interference fit with the ground, so that the friction will increase. Moreover, when the sweeping robot travels from the hard floor to the carpet, since the scraper 10 is fixed, the travel resistance is greater.

Summary of the invention

The purpose of the present invention is to provide a cleaning tool, which has low traveling resistance on any working surface, good sealing and dust guiding effect, and greatly improved dust suction performance.

In order to achieve one of the objectives of the above-mentioned invention, an embodiment of the present invention provides a cleaning tool, the cleaning assembly includes a tool body, a fan assembly provided on the tool body, and a dust collecting device in gas communication with the fan assembly, The cleaning tool further includes a rolling brush assembly provided on the tool body, and the rolling brush assembly includes a rolling brush,

Wherein: the cleaning tool further includes a lower cover provided on the tool body, a scraper strip fixedly provided on the lower cover, and a swing arm movably provided on the lower cover, the scraper strip and the roller The brush defines a channel in gas communication with the dust collecting device. The surface on which the cleaning tool travels is a working surface. When the swing arm is pressed and floated up after contacting the working surface, the swing arm abuts against the The scraper thus drives the scraper to float up.

As a further improvement of an embodiment of the present invention, one end of the scraping strip is fixed to the lower cover, the other end of the scraping strip is a free end, and the direction of travel of the cleaning tool is defined as the front, and the swing arm and The lowermost end of the working surface closest to the distance is located in front of the end of the free end.

As a further improvement of an embodiment of the present invention, the swing arm is rotatably provided on the lower cover, and when the swing arm is pushed by the working surface, the swing arm rotates at a certain angle relative to the lower cover Drive the scraper to move upward.

As a further improvement of an embodiment of the present invention, a reset piece is provided between the swing arm and the lower cover.

As a further improvement of an embodiment of the present invention, the scraper bar includes a fixed portion fixedly connected to the lower cover, an inclined portion connected to the fixed portion and at an obtuse angle, and the inclined portion is away from the fixed portion. The direction of the fixed portion gradually becomes thinner, and the free end is located at the inclined portion.

As a further improvement of an embodiment of the present invention, a first groove is provided on the side of the inclined portion facing away from the traveling direction of the cleaning tool, and the first groove is arranged closer to the free end.

As a further improvement of an embodiment of the present invention, a second groove is further provided on the side of the inclined portion facing away from the traveling direction of the cleaning tool, and the second groove is arranged closer to the fixing portion.

As a further improvement of an embodiment of the present invention, the swing arm includes a body portion, a connecting portion provided on the body portion and rotatably connected to the lower cover, and a contact portion provided on the body portion. The contact portion is in contact with the working surface, and the body portion is in contact with the scraper strip.

As a further improvement of an embodiment of the present invention, the swing arm has a rotation axis, and at least two contact portions are arranged at intervals in the extension direction of the rotation axis.

As a further improvement of an embodiment of the present invention, the contact portion is provided with a guide portion for easy pushing.

As a further improvement of an embodiment of the present invention, the cleaning tool is a cleaning robot, and the cleaning robot includes a first driving wheel, a second driving wheel, a universal wheel, and a universal wheel rotatably arranged on the tool body. The rechargeable battery on the tool body provides power for the cleaning robot.

Compared with the prior art, the present invention has the beneficial effects that since the scraper is fixedly arranged on the lower cover and the swing arm is movably arranged on the lower cover, the swing arm can drive the scraper to float up and down, so that the traveling resistance is small and the sealing effect better. In addition, the lowermost end of the swing arm closest to the working surface is located in front of the end of the free end. When the cleaning tool travels from a hard working surface to a softer carpet working surface, the swing arm first touches the carpet, and is pushed by the carpet to move relative to the lower cover to drive the scraper to move upward, so that the depth of the scraper into the carpet is small , Which not only ensures the sealing and dust guiding effect of the scraper, but also reduces the travel resistance of the cleaning tool. When the cleaning tool travels on a hard working surface, the scraper is in close contact with the working surface, which also ensures the sealing and dust guiding effect. Therefore, the cleaning tool has low traveling resistance on any working surface, has a better sealing and dust guiding effect, and greatly improves the dust suction performance.

Description of the drawings

Figure 1 is a front view of a lower cover and a scraper in the prior art;

Figure 2 is a cross-sectional view at A-A in Figure 1;

Figure 3 is a bottom view of a cleaning tool provided by a specific embodiment of the present invention;

Figure 4 is a top view of the cleaning tool in Figure 3;

Figure 5 is a cross-sectional view at B-B in Figure 4, when the cleaning tool is running on a harder working surface;

Fig. 6 is a partial enlarged schematic diagram of E in Fig. 5;

Figure 7 is a cross-sectional view at C-C in Figure 4, where the cleaning tool is moving from the harder work side to the softer carpet;

FIG. 8 is a partial enlarged schematic diagram of F in FIG. 7;

Figure 9 is a cross-sectional view of D-D in Figure 4, when the cleaning tool is running on the softer carpet;

Figure 10 is a partial enlarged schematic diagram of G in Figure 9;

FIG. 11 is a perspective schematic view of a scraper in a cleaning tool provided by a specific embodiment of the present invention;

Fig. 12 is a perspective schematic view of a swing arm in a cleaning tool provided by a specific embodiment of the present invention.

detailed description

The present invention will be described in detail below in conjunction with the specific embodiments shown in the drawings. However, these embodiments do not limit the present invention, and the structural, method, or functional changes made by those skilled in the art based on these embodiments are all included in the protection scope of the present invention.

In the drawings of the present application, for the convenience of illustration, some dimensions of structures or parts are exaggerated relative to other structures or parts, and therefore, they are only used to illustrate the basic structure of the subject matter of the present application.

In addition, terms such as "upper", "above", "below", "below" and the like used herein to indicate a relative position in space are for the purpose of facilitating description to describe a unit or feature shown in the drawings relative to The relationship of another unit or feature. The term of the relative position in space may be intended to include different orientations of the device in use or operation other than those shown in the figures. For example, if the device in the figure is turned over, the unit described as being "below" or "below" other units or features will be "above" the other units or features. Therefore, the exemplary term "below" can encompass both above and below orientations. The device can be oriented in other ways (rotated by 90 degrees or other orientations), and the space-related descriptors used herein are explained accordingly.

As shown in Figures 3 to 6, the present invention provides a preferred embodiment. This specific embodiment discloses a cleaning tool. The cleaning assembly includes a tool body 20, a fan assembly 22 arranged on the tool body 20, and a fan assembly 22 corresponding to the fan assembly 22. The dust collecting device 24 connected with air, the cleaning tool further includes a rolling brush assembly arranged on the tool body 20, and the rolling brush assembly includes a rolling brush 26.

Specifically in this embodiment, the cleaning tool is a sweeping robot. Of course, the cleaning tool can also be a manual cleaning tool. The cleaning robot includes a first driving wheel 28, a second driving wheel 30, a universal wheel 32 rotatably provided on the tool main body 20, and a rechargeable battery provided on the tool main body 20 to provide power for the cleaning robot. The rechargeable battery includes a first charging piece 34 and a second charging piece 36. The first charging piece 34 and the second charging piece 36 are symmetrically arranged on the tool body 20. Specifically, the first charging piece 34 and the second charging piece 36 Located on both sides of the universal wheel 32. The cleaning tool further includes a fixed cover assembly 38 arranged on the tool body 20, and the rolling brush 26 is arranged on the fixed cover assembly 38. In addition, the cleaning tool also includes at least one side brush, and further, two side brushes are provided, namely the left brush 40 and the right brush 42, and the left brush 40 and the right brush 42 are symmetrically arranged on the tool body 20.

The cleaning tool also includes a lower cover 44 provided on the tool body 20, a scraper 46 fixedly provided on the lower cover 44, and a swing arm 48 movably provided on the lower cover 44. The swing arm 48 can drive the scraper 46 to float up and down, thereby The traveling resistance is small and the sealing effect is better. Here, the surface on which the cleaning tool travels is used as a reference, moving in a direction away from the surface is upward floating, and moving in a direction closer to the surface is floating downward.

The scraping strip 46 and the rolling brush 26 define a channel 50 that is in gas communication with the dust collecting device 24. The surface on which the cleaning tool travels is the working surface. When the swing arm 48 contacts the working surface and is pressed and floated, the swing arm 48 abuts against the scraper. The strip 46 thus drives the scraping strip 46 to float up. One end of the scraper 46 is fixed to the lower cover 44, and the other end of the scraper 46 is the free end 54, which defines the direction of travel of the cleaning tool as the front. The lowest end 52 of the swing arm 48 with the closest distance to the working surface is located at the lowest end of the free end 54 The front of end 56.

In this preferred embodiment, since the scraper 46 is fixedly arranged on the lower cover 44, the swing arm 48 is movably arranged on the lower cover 44, and the lowest end 52 of the swing arm 48 with the closest distance to the working surface is located at the end 56 of the free end 54 Ahead. When the cleaning tool travels from a harder working surface to a softer carpet working surface, the swing arm 48 first contacts the carpet, and is pushed by the carpet to move relative to the lower cover 44 to drive the scraper 46 to move upward, so that the scraper 46 enters the carpet. The smaller the depth of, it not only ensures the sealing and dust guiding effect of the scraper 46, but also reduces the travel resistance of the cleaning tool. The upward movement here takes the working surface as a reference, moving away from the working surface is upward, and correspondingly, moving toward the working surface is downward. When the cleaning tool travels on a hard working surface, the scraper 46 is in close contact with the working surface, which also ensures the sealing and dust guiding effect. Therefore, the cleaning tool has low traveling resistance on any working surface, has a better sealing and dust guiding effect, and greatly improves the dust suction performance.

In order to further ensure the sealing and dust guiding effect of the wiper strip 46, the minimum gap between the roller brush 26 and the wiper strip 46 is not greater than 0.5 mm.

The cleaning tool further includes a suction port 47, which defines a suction port 49 in gas communication with the dust collecting device 24, and in order to improve the sealing performance, a sealing ring 51 is arranged between the suction piece 47 and the dust collecting device 24. In addition, the suction port 47 covers a part of the outer periphery of the roller brush 26, and the suction port 49 and the passage 50 are also in gas communication.

Specifically in this embodiment, the swing arm 48 is rotatably provided on the lower cover 44. When the swing arm 48 is pushed by the working surface, the swing arm 48 rotates at a certain angle relative to the lower cover 44 to drive the scraper 46 to move upward. Of course, in other embodiments, the swing arm 48 can also be moved upward by directly floating upward, such as a sliding rail.

5 and 6 specifically, when the cleaning tool travels on a harder working surface, the end 56 of the scraper 46 is in close contact with the working surface. Specifically, there is a certain amount of interference between the scraper 46 and the working surface. Preferably, the interference between the scraper 46 and the working surface is approximately 0.1 mm. This arrangement can not only ensure the sealing and dust guiding effect of the wiper 46, but also make the traveling resistance of the cleaning tool smaller.

As shown in Figures 7 and 8, when the cleaning tool transitions from a harder working surface to a softer carpet working surface, the swing arm 48 first contacts the carpet, and is pushed by the carpet to rotate the swing arm 48 relative to the lower cover 44 And push the lower cover 44 to move upwards. Because the scraper 46 is fixed on the lower cover 44, the lower cover 44 can drive the scraper 46 to move upward. Therefore, the upward movement of the scraper 46 makes the depth of the scraper 46 into the carpet smaller, which ensures The sealing and dust guiding effect of the scraper 46 makes the traveling resistance smaller.

As shown in Figures 9 and 10, when the cleaning tool has fully traveled to the softer carpet working surface, as the resistance of the carpet is greater, the scraper 46 bends backwards, further reducing the travel resistance of the cleaning tool, so that The cleaning tool travels more smoothly. When the cleaning tool returns to a harder working surface again, since there is no upward push of the carpet, the scraper 46 and the lower cover 44 rely on their own weight and the elasticity of the scraper 46. The scraper 46 moves downward with the lower cover 44 to a certain extent. The distance and the scraper 46 return from the bent state to the unbent state, so as to ensure that the scraper 46 is in close contact with the working surface.

Further, a reset member (not shown) is provided between the swing arm 48 and the lower cover 44. This ensures that the swing arm 48 is automatically reset when the cleaning tool returns from the carpet to the harder working surface. The reset member can be set as an elastic member such as a torsion spring or a compression spring.

11, the scraper 46 includes a fixed portion 58 fixedly connected to the lower cover 44, and an obtuse angled inclined portion 60 connected to the fixed portion 58. The inclined portion 60 gradually moves away from the fixed portion 58 from the fixed portion 58. Thinning, the free end 54 is located at the inclined part 60. The inclined portion 60 is arranged in a gradually thinning structure, so that the scraper 46 is easy to bend.

Specifically, a first groove 62 is provided on the side of the inclined portion 60 opposite to the traveling direction of the cleaning tool, and the first groove 62 is disposed closer to the free end 54. Preferably, the first groove 62 is configured as an arc-shaped groove. This makes the scraping strip 46 easier to bend when the cleaning tool travels to the carpet. In addition, the inclined portion 60 is further provided with a second groove 64 on the side opposite to the traveling direction of the cleaning tool, and the second groove 64 is disposed closer to the fixing portion 58. The second groove 64 is also provided as an arc-shaped groove. Of course, both the first groove 62 and the second groove 64 can be arranged in other structural shapes.

12, the swing arm 48 includes a body portion 66, a connecting portion 68 provided on the body portion 66 and rotatably connected with the lower cover 44, and a contact portion 70 provided on the body portion 66, the contact portion 70 is in contact with the working surface. The connecting portion 68 includes two coaxial rotating shafts 72 arranged at intervals, and the two rotating shafts 72 are rotatably connected to the lower cover 44. The contact portions 70 are arranged at two intervals, the two contact portions 70 are located at both ends of the main body portion 66, the scraper 46 is located between the two contact portions 70, and the scraper 46 abuts against the main body 66, so that the swing arm 48 The scraper 46 can be driven to float up and down.

The swing arm 48 has a rotation axis 74. The rotation axis 74 is the axis of the rotation shaft 72. In the extending direction of the rotation axis 74, at least two contact portions 70 are provided at intervals. Preferably, the two contact parts 70 are respectively arranged at opposite ends of the main body part 66 and arranged symmetrically to each other.

The contact part 70 is provided with a guide part for easy pushing. The guide part is arranged in an arc shape, thereby reducing the traveling resistance and facilitating the climbing of the cleaning tool, such as facilitating the traveling from a hard working surface to the carpet.

It should be understood that although this specification is described in accordance with the implementation manners, not each implementation manner only includes an independent technical solution. This narration in the specification is only for clarity, and those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions of feasible implementations of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementations or implementations made without departing from the technical spirit of the present invention All changes shall be included in the protection scope of the present invention.

Claims

A cleaning tool. The cleaning assembly includes a tool body, a fan assembly arranged on the tool body, and a dust collecting device in gas communication with the fan assembly. The cleaning tool also includes a roller arranged on the tool body. Brush assembly, the rolling brush assembly includes a rolling brush,

The cleaning tool is characterized in that: the cleaning tool further includes a lower cover provided on the tool body, a scraper strip fixedly provided on the lower cover, and a swing arm movably provided on the lower cover. The rolling brush defines a channel in gas communication with the dust collecting device. The surface on which the cleaning tool travels is a working surface. When the swing arm is pressed and floated up after contacting the working surface, the swing arm abuts The scraping strip thus drives the scraping strip to float up.
The cleaning tool according to claim 1, wherein one end of the scraping strip is fixed to the lower cover, and the other end of the scraping strip is a free end, which defines the direction of travel of the cleaning tool as the front, so The lowermost end of the swing arm closest to the working surface is located in front of the end of the free end.
The cleaning tool according to claim 1, wherein the swing arm is rotatably provided on the lower cover, and when the swing arm is pushed by the working surface, the swing arm is relative to the lower cover. The cover rotates to a certain angle to drive the scraper to move upward.
The cleaning tool according to claim 3, wherein a resetting member is provided between the swing arm and the lower cover.
The cleaning tool according to claim 1, wherein the wiper strip comprises a fixed part fixedly connected to the lower cover, an inclined part connected to the fixed part and at an obtuse angle, the inclined part The fixed portion gradually becomes thinner in a direction away from the fixed portion, and the free end is located at the inclined portion.
The cleaning tool according to claim 5, wherein a first groove is provided on the side of the inclined portion facing away from the traveling direction of the cleaning tool, and the first groove is disposed closer to the free end.
The cleaning tool according to claim 5, wherein a second groove is provided on the side of the inclined portion facing away from the traveling direction of the cleaning tool, and the second groove is disposed closer to the fixing portion.
The cleaning tool according to claim 1, wherein the swing arm includes a body portion, a connecting portion provided on the body portion and rotatably connected to the lower cover, and a contact portion provided on the body portion. Part, the contact part is in contact with the working surface, and the body part is in contact with the scraper strip.
8. The cleaning tool according to claim 8, wherein the swing arm has a rotation axis, and at least two contact portions are arranged at intervals in the extending direction of the rotation axis.
8. The cleaning tool according to claim 8, wherein the contact part is provided with a guide part for easy advancement.
The cleaning tool according to claim 1, wherein the cleaning tool is a cleaning robot, and the cleaning robot includes a first driving wheel, a second driving wheel, and a universal wheel rotatably arranged on the tool body , And a rechargeable battery provided on the tool body to provide power for the cleaning robot.