JP2018069000A - Robot cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a robot cleaner capable of performing self-propelling even when thin yarn or hair, etc., exists on a floor.SOLUTION: A robot cleaner 1 includes: a main body 2 for removing dust from a surface of a floor 41; at least two air suction ports 31 attached close to corner parts 22 in a lower part 21 of the main body 2 so as to suck air; and rotary brushes 5 each of which has a nearly circular shape and allows the main body 2 to perform self-propelling by rotating around the air suction ports 31, and where rotation centers 51 viewed from a self-propelling direction are formed to be a V shape.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a robot cleaner, and more particularly, to a robot-free robot cleaner that allows the robot cleaner to self-propell.

  A conventional robot cleaner includes a wheel that is provided at a lower portion of a main body, moves the main body, and is attached to a lower portion of the main body, and includes a string entanglement preventing member that extends at one end and contacts an outer ring portion of the wheel. (For example, refer to Patent Document 1).

  However, even if a conventional robot cleaner does not entangle the cord or string on the floor with the wheel, in the case of thin thread or hair, the thread or hair is entangled inside the main body and entangled with the wheel. There is a drawback that the self-running of the main body becomes difficult due to the drive shaft. In addition, the conventional robot cleaner has a drawback in that it cannot get over even with a small step because the self-propelled wheels are on both sides of the lower center of the main body. In addition, the conventional robot cleaner has a drawback in that it requires a self-propelled wheel and an electric motor that drives the wheel, and a side brush that cleans the edge and corner of the floor and an electric motor that drives the side brush.

JP 2011-212444 A

  An object of the present invention is to solve the above-mentioned drawbacks of the prior art, and to provide a robot cleaner that can run on its own even if thin threads or hair are on the floor.

  In order to achieve the above object, a robot cleaner according to claim 1 is a robot cleaner that removes dust from the floor while self-propelled, and is attached in the vicinity of the main body and the lower corner of the main body. At least two air suction ports for sucking air, and a substantially circular rotating brush that rotates around the air suction port to cause the main body to self-run, and viewed from the self-running direction. The two rotation centers of the rotating brush are V-shaped.

  According to a second aspect of the present invention, at least the tip portion of the brush material on the outer peripheral portion of the rotating brush has a higher coefficient of friction than the other brush materials.

  As is apparent from the above description, the robot cleaner according to claim 1 is a robot cleaner that removes dust from the floor while self-propelled, in the vicinity of the main body and the lower corner of the main body. At least two air inlets for sucking in the attached air, and a substantially circular rotating brush that rotates around the air inlet and causes the main body to self-run. Further, since the two rotation centers of the rotating brush are V-shaped, no self-propelled wheel is required, and even if a thin thread or hair is entangled with the rotating brush, it can be easily removed. In addition, the rotating brush is mounted near the lower corner of the main body and is flexible and rotating, so it can get over small steps, and the side brush that cleans the walls and corners of the floor and the electric motor that drives the side brush Can be omitted. Moreover, the robot cleaner provided with four or more rotating brushes can increase the ability to clean the garbage on the floor.

  The robot cleaner according to claim 2 is reliable even on a slippery floor because at least the tip of the brush material on the outer peripheral portion of the rotating brush has a higher coefficient of friction than the other brush materials. Can self-propelled.

It is a front view which shows the structure of the 1st best form for implementing this invention. It is a fragmentary sectional top view which shows the effect | action of the 1st best form of FIG. It is a front view which shows the structure of the 2nd best form for implementing this invention. FIG. 4 is a partial cross-sectional top view showing the operation of the second best mode of FIG. 3.

  Hereinafter, the best mode of the present invention will be described with reference to the drawings.

A first embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1 and 2, the robot cleaner 1 includes a main body 2, two air suction ports 31 for sucking air attached in the vicinity of the corner 22 of the lower portion 21 of the main body 2, and an air suction port. Rotate around 31 in the direction of a single arrow so as to suck up dust (not shown) on the floor 41 and to rotate the main body 2 by itself, and to the lower part 21 of the main body 2. Is provided with an auxiliary wheel 6 so that it can run without contacting the floor 41, and the two rotation centers 51 of the rotating brush 5 viewed from the direction of self-running of the main body 2 (double arrows) are V-shaped. Has been. In addition, an inclined portion 27 is provided between the lower portion 21 and the side portion 26 of the main body 2 in order to get over a small step.

  The rotary brush 5 includes a brush material 52 and a first hollow disk 53 in which the brush material 52 is implanted. The first hollow disk 53 is fitted in a second hollow disk 55 integrated with a hollow shaft 54. The hollow shaft 54 is supported by the bearing 8 and is rotated by an electric motor 72 to which electric power is supplied from a secondary battery 71 attached to the main body 2. Further, the main body 2 separates the ventilation port 32 communicating with the air suction port 31, the electric motor 73, the fan 74 that is rotated by the electric motor 73, and the air sucked from the ventilation port 32 and the dust (not shown) by the rotation of the fan 74. A filter 75 is attached, and a trash can 76 that is detachable from the main body 2 is provided.

  The brush material 52 of the outer peripheral portion 56 of the rotating brush 5 is made of a material having a friction coefficient at least at the tip portion 57 larger than that of the other brush materials 52 so that the main body 2 can reliably run on the slippery floor 41. ing.

  With the configuration described above, when the robot cleaner 1 is placed on the floor 41, the rotary brush 5 comes into contact with the contact portion 42 of the floor 41 but does not come into contact with the non-contact portion 43. Reference numeral 1 denotes a rotary brush 5 that is rotated by an electric motor 72 to scrape dust (not shown) on the floor 41, and a fan 74 is rotated by an electric motor 73 while the main body 2 is self-propelled to remove air and dust (not shown) as an air inlet. Aspirate from 31. Air sucked from the air inlet 31 and dust (not shown) pass through the vent 32 and only dust (not shown) is sucked into the dust box 76. The air separated by the filter 75 flows into the interior 23 of the main body 2 and then flows out from the opening 25 in the upper portion 24 of the main body 2.

  Since the scraping portion 58 of the rotating brush 5 rotates in a direction different from the self-running direction (double-headed arrow) of the main body 2, dust (not shown) on the floor 41 can be scraped up. If the robot cleaner 1 hits an obstacle and cannot move, the rotating brush 5 can be reversed. When changing the self-running direction (double arrow) of the robot cleaner 1, one rotating brush 5 can be stopped or reversed. Even if a thin thread or hair is entangled with the rotating brush 5, it can be easily removed by a hand (not shown). Since the main body 2 includes the inclined portion 27 and the rotating brush 5 is flexible and rotating, the main body 2 can overcome a small step (not shown). Since the rotating brush 5 is attached in the vicinity of the corner portion 22 of the lower portion 21 of the main body 2, it is possible to clean a wall or a corner (not shown) of the floor 41. When the rotating brush 5 becomes old, it can be removed from the second hollow disk 55 and easily replaced with a new rotating brush 5.

  Constituent elements and members that are the same as or equivalent to those in the first embodiment are denoted by the same reference numerals, and repeated descriptions are omitted as appropriate. Hereinafter, the characteristic part of the second embodiment will be mainly described.

  A second embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 3 and 4, the robot cleaner 1 includes a main body 2, four air inlets 31 for sucking air attached in the vicinity of the corner 22 of the lower part 21 of the main body 2, and an air inlet 31. Is rotated in the direction of a single arrow so that unillustrated dust on the floor 41 can be sucked, and a substantially circular rotating brush 5 for self-propelling the main body 2 is provided. The two rotation centers 51 of the rotating brush 5 viewed from the direction (double arrows) are configured to be V-shaped.

  With the configuration described above, when the robot cleaner 1 is placed on the floor 41, the rotary brush 5 comes into contact with the contact portion 42 of the floor 41 but does not come into contact with the non-contact portion 43. 1 rotates the rotating brush 5 to scoop up dust (not shown) on the floor 41 by the scraping unit 58 and sucks dust (not shown) from the air inlet 31 while the main body 2 is self-propelled. Air sucked from the air suction port 31 and dust (not shown) pass through the ventilation port 32. Since there are four rotating brushes 5, the auxiliary wheel 6 of Example 1 can be made unnecessary. It is also possible to increase the ability to clean unillustrated garbage on the floor.

  Any modifications and applications are possible within the scope of the present invention. For example, the brush material 52 of the outer peripheral portion 56 may be made of a thick and flexible rubber so that the main body 2 can reliably run on the slippery floor 41. Further, the rotating brush 5 may be replaced with a type that can be wiped and cleaned. Further, the number of rotating brushes 5 may be six or more.

  The present invention is used in the industry of manufacturing robot cleaners.

DESCRIPTION OF SYMBOLS 1 Robot cleaner 2 Main body 5 Rotating brush 6 Auxiliary wheel 8 Bearing 21 Lower part 22 Corner part 23 Interior 24 Upper part 25 Opening part 26 Side part 27 Inclination part 31 Air inlet 32 Ventilation hole 41 Floor 42 Contact part 43 Non-contact part 51 Rotation Center 52 Brush material 53 First hollow disk 54 Hollow shaft 55 Second hollow disk 56 Peripheral part 57 Tip part 58 Scraping part 71 Secondary battery 72 Electric motor 73 Electric motor 74 Fan 75 Filter 76 Trash

Claims (2)

  In a robot cleaner that removes dust from the floor while self-propelled, a main body, at least two air inlets for sucking air attached in the vicinity of a lower corner of the main body, and the air An approximately circular rotating brush that rotates around the suction port to allow the main body to self-run, and that the two rotation centers of the rotating brush viewed from the self-running direction are V-shaped. A robotic vacuum cleaner.   The robot cleaner according to claim 1, wherein at least a tip portion of a brush material on an outer peripheral portion of the rotating brush has a friction coefficient larger than that of the other brush material.

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