Dust-collectable mobile robotic vacuum cleaner

A dust-collectable mobile robotic vacuum cleaner includes a base frame, a driving device mounted to the base frame, a control device mounted to the base frame and electrically connected with the driving device, a collision-detectable unit mounted to the base frame electrically connected with the control device, and a dust-collecting device mounted to the base frame. The dust-collecting device has dust-collecting box, a dust guider, a round brush, and a dust entrance formed at one side of the dust-collecting box. The dust guider is located at a lower edge of the dust entrance, having two opposite sides pivotably mounted to the dust-collecting box and lying against the ground at a predetermined angle respectively, for upward and downward pivoting movement. The round brush is rotatably located at a front end of the dust guider for sweeping dust particles.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates generally to mobile robotic vacuum cleaners, and more particularly, to a dust-collectable mobile robotic vacuum cleaner.

2. Description of the Related Art

As disclosed in U.S. Pat. No. 6,883,201, an antonymous floor-cleaning robot is composed of a brush assembly, a vacuum system, and a dust-collecting box, for sweeping and collecting dust particles. The brush assembly includes two round brushes parallel to each other. While the antonymous floor-cleaning robot is operated, the two round brushes roll in counter-direction to capture the dust particles away from the ground and then the vacuum system sucks the dust particles into the dust-collecting box.

However, as shown inFIG. 7, a dead angle2is formed among the two round brushes1and the ground. While doing cleaning operation, the antonymous floor-cleaning robot fails to clean the dust particles located at the dead angle2. Thus, the conventional antonymous floor-cleaning robot is defective to require further improvement.

SUMMARY OF THE INVENTION

The primary objective of the present invention is to provide a dust-collectable mobile robotic vacuum cleaner, which can effectively clean the dust particles.

The foregoing objectives of the present invention are attained by the dust-collectable mobile robotic vacuum cleaner, which is composed of a base frame, a driving device mounted to the base frame, a control device mounted to the base frame and electrically connected with the driving device, a collision-detectable unit mounted to the base frame electrically connected with the control device, and a dust-collecting device mounted to the base frame. The dust-collecting device includes dust-collecting box, a dust guider, a round brush, and a dust entrance formed at one side of the dust-collecting box. The dust guider is located at a lower edge of the dust entrance, having two opposite sides pivotably mounted to the dust-collecting box and lying against the ground at a predetermined angle respectively, for upward and downward pivoting movement. The round brush is rotatably located at a front end of the dust guider for sweeping dust particles. In light of this, when the robotic vacuum cleaner is operated to clean the dust, the round brush lies against the ground and inwardly rotatably sweeps the dust particles to enable the dust particles to be captured along the dust guider through the dust entrance into the dust-collecting box.

Further, the dust guider includes a plurality of guiding portions and two bevels formed at two sides of a front end thereof respectively. While turning and encountering a barrier, the robotic vacuum cleaner can slidably move over and across the barrier by means of the bevels. While moving forward and encountering the barrier, the robotic vacuum cleaner can slidably move over and across the barrier by means of the guiding portion. Accordingly, the present invention can effective clean the dust particles.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

Referring toFIGS. 1-6, a dust-collectable mobile robotic vacuum cleaner10is composed of a base frame12, a driving device13, a control device14, a collision-detectable unit15, and a dust-collecting device11. The driving device13is mounted to the base frame12for driving the movement of the base frame12. The control device14is mounted to the base frame12and connected with the driving device13for controlling the moving direction of the driving device. The collision-detectable unit15is mounted to the base frame12and electrically connected with the control device14for detecting whether the base frame12in motion encounters a barrier and for generating and transmitting a signal to the control device14while encountering the barrier. The dust-collecting device11includes a dust-collecting box20, a dust guider30, and a round brush40, a motor42for driving the round brush40, a transmission44connected with the motor42, and a side brush46connected with the transmission44.

The dust-collecting box20is mounted inside the base frame12, having a dust entrance22formed at one side thereof, an exhaust port24formed at the other side thereof, a dust-collecting plate26mounted to the dust-collecting box20, a plurality of meshes formed on the dust-collecting plate26and covering the exhaust port24for ventilation, and an exhaust blower28mounted to the dust-collecting box20and corresponding to the exhaust port24and located outside the dust-collecting box20for pumping the air out of the dust-collecting box20.

The dust guider30includes two pivot pins32, two bevels34, two guiding portions36, and two convexities31, having one side lying against a lower edge of the dust entrance22. The two convexities31extend upward from two opposite sides of a top section of the dust-collecting plate30respectively. The two pivot pins32is mounted into the two convexities31respectively, thus enabling the opposite side of the dust-collecting plate30to pivot upward and downward on the pivot pins32. The opposite side of the dust-collecting plate30extends downward at a predetermined angle to lie against the ground. The two bevels34extend slopingly upward from bilateral edges of a bottom section of the dust-collecting plate30respectively. The two guiding portions36each extend outward along the ground from the bottom section the dust guider30and each have an arc-shaped end formed at a distal end thereof, equidistantly located between the two bevels34and on a top side of the dust guider30.

The round brush40is mounted inside the base frame12. The motor42is electrically connected with the driving device13to enable the transmission44to drive rotation of the round and side brushes40and46. The round brush40is inwardly rotatably located at the bottom section of the dust guider20. The side brush46is horizontally rotatably located at one side of the base frame12.

When the base frame12is moved for operation, the side brush46horizontally rotatably sweeps the dust particles located beside the base frame12to the round brush40, and the round brush40lies against the ground inwardly rotatably sweeps the dust particles onto the dust guider30. In the meantime, the exhaust blower28pumps the air out of the dust-collecting box20to generate a negative pressure inside the dust-collecting box20and to generate an air attraction at the dust entrance, thus sucking the dust particles located on and over the top side of the dust guider39into the dust-collecting box20. The meshes of the dust-collecting plate26can block the dust particles and enable the air pumped out of the dust-collecting box20to exhaust outside to further keep the dust particles inside the dust-collecting box20. In addition, when the base frame12turns and then the dust guider30encounters a barrier, e.g. a protrusion (not shown) in uneven ground, the bevels34can slidably move through the upper side of the barrier to enable the dust guider30to pivot upward on the pivot pin32to move across the barrier. When the base frame12marches forward and then the dust guider30encounters the barrier, the guiding portions36slidably move through the upper side of the barrier to enable the dust guider30to pivot upward to move across the barrier.

In conclusion, the present invention employs the cooperation of the round brush and the dust guider to eliminate the problem that the prior art fails to clean the dust particles at the dead angle to enhance the cleaning potency. In addition, the guiding portions and the bevels in cooperation with the upward and downward pivoting movement of the dust guider can enable the robotic vacuum cleaner of the present invention to move across the barrier and continue cleaning the dust. Accordingly, the present invention includes advantages of effective cleaning potency.