This non-provisional application claims priority under 35 U.S.C. §119(a) on Patent Application No. 201420499776.8 filed in P.R. China on Sep. 2, 2014, the entire contents of which are hereby incorporated by reference.
Some references, if any, which may include patents, patent applications and various publications, may be cited and discussed in the description of this invention. The citation and/or discussion of such references, if any, is provided merely to clarify the description of the present invention and is not an admission that any such reference is “prior art” to the invention described herein. All references listed, cited and/or discussed in this specification are incorporated herein by reference in their entireties and to the same extent as if each reference was individually incorporated by reference.
The present invention relates to an intelligent cleaning robot, and in particular, to an intelligent cleaning robot that enhances dirt suction.
A conventional intelligent cleaning robot includes a housing, a rotatable brush assembly and a vacuum dust suction apparatus. The rotatable brush assembly includes a rotatable brush frame mounted at the bottom of the housing. The rotatable brush frame has an accommodating cavity. The accommodating cavity has an opening at the bottom of the housing. Two rotatable brushes are accommodated in the accommodating cavity and are both partially exposed from the opening. The two rotatable brushes rotate in opposite directions. The vacuum dust suction apparatus includes a dust suction conduit, a dust collecting box and an impeller. One end of the dust suction conduit is in communication with the accommodating cavity, and the other end of the dust suction conduit is in communication with the dust collecting box. A gap exists between the two rotatable brushes, and dust and crumbs are sucked into the dust suction conduit through the gap. According to the principle of vacuum dust suction, with a given amount of air passing through the impeller per unit time, if the size of an air inlet of the impeller is small, an air flow velocity at the air inlet is high, and correspondingly, a suction force at the air inlet is large, while if the size of the air inlet of the impeller is large, the air flow velocity at the air inlet is low, and correspondingly, the suction force at the air inlet is small. Two rotatable brushes of the intelligent cleaning robot are accommodated in the same accommodating cavity, which leads to a relatively large size of the accommodating cavity, that is, the opening is relatively large. Therefore, the air flow velocity in the accommodating cavity is low, and as a result, the suction force in the gap between the two rotatable brushes is relatively small, which weakens the capability of the intelligent cleaning robot of sucking up dust and crumbs from the floor below the rotatable brushes.
Therefore, a heretofore unaddressed need exists in the art to address the aforementioned deficiencies and inadequacies.
In one aspect, the present invention is directed to an intelligent cleaning robot that enhances dust suction.
In one embodiment, an intelligent cleaning robot for automatically cleaning dust on the floor includes a housing, a floor brush assembly mounted in the housing, and a dust suction apparatus mounted in the housing. The floor brush assembly has a first accommodating cavity and a second accommodating cavity. A partition plate separates the first and second accommodating cavities. A gap exists between a bottom edge of the partition plate and the floor. A first rotatable brush and a second rotatable brush are correspondingly accommodated in the first and second accommodating cavities respectively. The first and second rotatable brushes are exposed from the bottom of the housing. A slit for dirt to pass through is formed between the first rotatable brush and the partition plate. The dust suction apparatus has a dust suction conduit and a dust collecting box. One end of the dust suction conduit is in communication with the first accommodating cavity, and the other end of the dust suction conduit is in communication with the dust collecting box. When the intelligent cleaning robot cleans the floor, the first and second rotatable brushes rotate in opposite directions. The rotation of the first rotatable brush makes dirt enter the dust suction conduit through the slit, and the rotation of the second rotatable brush makes dirt enter the slit through the gap.
In one embodiment, the second rotatable brush has an elastic tube, multiple blades protrude outward in a radial direction on an outer surface of the elastic tube, and the height of the blades is less than that of the gap.
In one embodiment, the partition plate is provided with a compliance portion at a bottom end thereof, the compliance portion leans towards the second rotatable brush, and the gap is formed between the compliance portion and the floor.
In one embodiment, the first rotatable brush has a first rotating shaft, the second rotatable brush has a second rotating shaft, and the first and second rotating shafts are in a same horizontal plane.
In one embodiment, a diameter of the first rotatable brush is equal to a diameter of the second rotatable brush.
In one embodiment, the first and second rotatable brushes each have a rigid driving shaft, and a section of the rigid driving shaft is not in a perfectly circular shape.
In one embodiment, an elastic tube is sleeved over the rigid driving shaft, and an elastic material is filled between the elastic tube and the rigid driving shaft.
In one embodiment, the intelligent cleaning robot further includes two side brushes. Each of the side brushes has a rotating seat, and at least one bristle body is extended downward in a protruding manner from the rotating seat. A mounting surface is formed in a recessed manner upward on each of two sides of the bottom of the housing. A mounting slot is further provided in a recessed manner on the mounting surface. The rotating seat is mounted in the mounting slot in a fitting manner, and a bottom surface of the rotating seat is in a same plane as the mounting surface.
In one embodiment, the dust suction apparatus has a frame mounted in the housing. The frame is provided with a placement slot that is recessed from a top surface thereof downward, and the placement slot is upwardly exposed from the housing. the dust collecting box is placed into the placement slot downward from above. The frame is provided with a fixed opening in communication with the placement slot. The fixed opening is correspondingly in communication with the dust suction conduit in a fixed manner. The dust collecting box is provided with an opening that is correspondingly in communication with the fixed opening.
In one embodiment, the dust suction apparatus further includes a flexible baffle. The flexible baffle is pivotally connected to the dust collecting box. At least one stopping block is disposed at the fixed opening of the frame. When the dust collecting box is placed in the placement slot, the stopping block urges against the flexible baffle and drives the flexible baffle to rotate, making the opening in an open state.
Compared with the related art, certain embodiments of the present invention use the partition plate to divide an accommodating cavity into the first accommodating cavity and the second accommodating cavity. The dust suction conduit is in communication with the first accommodating cavity, and a slit is formed between the first rotatable brush in the first accommodating cavity and the partition plate. When the intelligent cleaning robot cleans the floor, dirt cleaned by the first rotatable brush is directly sucked into the dust collecting box through the slit, and dirt cleaned by the second rotatable brush enters the slit through the gap between the partition plate and the floor and is then sucked into the dust collecting box. In the structure described above, space of the first accommodating cavity in communication with the dust suction conduit is small, which makes an air flow velocity in the first accommodating cavity high, i.e., an air flow velocity in the slit is high. Therefore, the capability of the intelligent cleaning robot of sucking up dust and crumbs from the floor below the rotatable brushes is enhanced.
These and other aspects of the present invention will become apparent from the following description of the preferred embodiment taken in conjunction with the following drawings, although variations and modifications therein may be effected without departing from the spirit and scope of the novel concepts of the disclosure.
The accompanying drawings illustrate one or more embodiments of the invention and together with the written description, serve to explain the principles of the invention. Wherever possible, the same reference numbers are used throughout the drawings to refer to the same or like elements of an embodiment.
The present invention is more particularly described in the following examples that are intended as illustrative only since numerous modifications and variations therein will be apparent to those skilled in the art. Various embodiments of the invention are now described in detail. Referring to the drawings, like numbers indicate like components throughout the views. As used in the description herein and throughout the claims that follow, the meaning of “a”, “an”, and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein and throughout the claims that follow, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise. Moreover, titles or subtitles may be used in the specification for the convenience of a reader, which shall have no influence on the scope of the present invention.
It will be understood that when an element is referred to as being “on” another element, it can be directly on the other element or intervening elements may be present therebetween. In contrast, when an element is referred to as being “directly on” another element, there are no intervening elements present. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items.
Furthermore, relative terms, such as “lower” or “bottom” and “upper” or “top,” may be used herein to describe one element's relationship to another element as illustrated in the Figures. It will be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation depicted in the Figures. For example, if the device in one of the figures is turned over, elements described as being on the “lower” side of other elements would then be oriented on “upper” sides of the other elements. The exemplary term “lower”, can therefore, encompasses both an orientation of “lower” and “upper,” depending of the particular orientation of the figure. Similarly, if the device in one of the figures is turned over, elements described as “below” or “beneath” other elements would then be oriented “above” the other elements. The exemplary terms “below” or “beneath” can, therefore, encompass both an orientation of above and below.
As used herein, “around”, “about” or “approximately” shall generally mean within 20 percent, preferably within 10 percent, and more preferably within 5 percent of a given value or range. Numerical quantities given herein are approximate, meaning that the term “around”, “about” or “approximately” can be inferred if not expressly stated.
As used herein, the terms “comprising”, “including”, “carrying”, “having”, “containing”, “involving”, and the like are to be understood to be open-ended, i.e., to mean including but not limited to.
The description will be made as to the embodiments of the present invention in conjunction with the accompanying drawings in
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In conclusion, certain embodiments of the intelligent cleaning robot 100 of the present invention, among other things, have the following beneficial advantages.
1. The partition plate 22 divides an accommodating cavity into the first accommodating cavity 211 and the second accommodating cavity 212. One end of the dust suction conduit 33 is in communication with the first accommodating cavity 211, and the other end of the dust suction conduit 33 is in communication with the dust collecting box 32. The first rotatable brush 23 in the first accommodating cavity 211 and the partition plate 22 form the slit G. When the intelligent cleaning robot 100 cleans the floor, dirt cleaned by the first rotatable brush 23 is directly sucked into the dust collecting box 32 through the slit G, and dirt cleaned by the second rotatable brush 24 enters the slit G through the gap T below the partition plate 22, and is then sucked into the dust collecting box 3. With the foregoing structure, space of the first accommodating cavity 211 in communication with the dust suction conduit 33 is relatively small, an air flow velocity in the first accommodating cavity 211 is relatively high. In other words, an air flow velocity in the slit G is relatively high, thereby enhancing the capability of the intelligent cleaning robot 100 of sucking up dirt from the floor below the first and second rotatable brushes 23 and 24.
2. The height H of the blades 27 is less than that of the gap T, which ensures that large dirt cleaned by the second rotatable brush 24 can be easily sucked into the slit G through the gap T.
3. The compliance portion 221 is disposed in a manner of leaning to the second rotatable brush 24, and the gap T is formed between the compliance portion 221 and the floor, so that dirt cleaned by the second rotatable brush 24 can be easily sucked into the slit G through the gap T, and then enters the dust collecting box 32. Moreover, it is avoided that dirt enters second accommodating cavity 212 when the second rotatable brush 24 rotates, so that the second accommodating cavity 212 is not blocked and the rotation of the second rotatable brush 24 is not impeded.
4. Because the bottom surface of the rotating seat 41 and the mounting surface 122 are in a same plane, when the side brush 40 rotates, dirt cleaned, such as hair, does not enter the gap between the external side wall of the rotating seat 41 and the mounting slot 123, thereby avoiding impeding the rotation of the side brush 40.
The foregoing description of the exemplary embodiments of the invention has been presented only for the purposes of illustration and description and is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in light of the above teaching.
The embodiments are chosen and described in order to explain the principles of the invention and their practical application so as to activate others skilled in the art to utilize the invention and various embodiments and with various modifications as are suited to the particular use contemplated. Alternative embodiments will become apparent to those skilled in the art to which the present invention pertains without departing from its spirit and scope. Accordingly, the scope of the present invention is defined by the appended claims rather than the foregoing description and the exemplary embodiments described therein.
Number | Date | Country | Kind |
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201420499776.8 | Sep 2014 | CN | national |