JP2019050968A - Self-propelled type robot cleaner - Google Patents

Abstract

To provide a convenient self-propelled type robot cleaner with excellent dust collection efficiency.SOLUTION: A self-propelled type robot cleaner includes: a dust collection nozzle part 8 having a rotating brush 23 for stirring up dust; a dust collection box 9 arranged at a rear side of the dust collection nozzle part 8, communicating with the dust collection nozzle part 8, and having an opening part 33 nearly equivalent to a width of the rotating brush 23; and a second dust collection chamber 6 arranged behind the dust collection box 9 and communicating with a suction fan 34. The dust collection box 9 includes a communication passage 35 communicating with the second dust collection chamber 6. Heavy trash stirred up by the rotating brush 23 is stored in the dust collection box 9 first, and comparatively light-weight trash is stored in the second dust collection chamber 6 after passing the communication passage 35 by an actuation of the suction fan 34. Thus, even when a dust storage amount of the dust collection box 9 is increased, dust collection can be performed without a change so as to perform continuous cleaning. Besides, suction air by the suction fan 34 acts even on the dust collection box, so that more dust is collected.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a self-propelled robot cleaner that cleans a floor while self-propelled.

  2. Description of the Related Art Conventionally, a self-propelled robot cleaner that cleans by collecting dust on a floor surface in a built-in dust collection box while rotating by driving a wheel with a built-in motor is known. A conventional self-propelled robot cleaner generally has a dust box housed behind a rotating brush that is driven to rotate, a filter and a fan, and dust collected by the rotating brush is stored in the dust box. (For example, see Patent Document 1).

  There is also a self-propelled robot cleaner in which the dust collection chamber is divided into an upper side and a lower side to increase the amount of dust stored (see, for example, Patent Document 2).

Japanese Patent Laid-Open No. 2014-051275 JP 2017-000251 A

  However, since the conventional self-propelled robot cleaner as described in Patent Document 1 has a relatively fast storage of dust in the dust box, for example, self-propelled for business use to clean a large floor There was a problem that the number of times the garbage was thrown away increased in the type robot cleaner.

  In addition, in a configuration in which the dust collection chamber is divided into upper and lower parts in order to increase the amount of stored dust, as in the conventional self-propelled robot cleaner as described in Patent Document 2, the suction by the fan is performed on the upper side of the collection. Since there is no suction in the lower dust collection chamber only with the dust chamber, there is a problem that the dust collection efficiency of dust accumulated in the lower dust collection chamber is poor.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide a self-propelled robot cleaner that is excellent in dust collection efficiency with a small number of times of dust disposal even when a large floor is cleaned.

  In order to solve the above-described conventional problems, a self-propelled robot cleaner according to the present invention is provided with a dust collection nozzle portion having a rotating brush that scrapes dust on a surface to be cleaned, and a rear side of the dust collection nozzle portion. A dust collection box that communicates with the dust collection nozzle and has an opening substantially equal to the width of the rotating brush; and a second dust collection chamber that is disposed behind the dust collection box and communicates with a suction fan. The dust collection box is provided with a communication path communicating with the second dust collection chamber. Heavy garbage scraped up by the rotating brush first accumulates in the dust collection box, and relatively light garbage passes through the communication path. As described above, since the dust is collected in the second dust collecting chamber communicated with the suction fan, dust can be collected as it is even if the amount of dust stored in the dust collecting box is increased, and continuous cleaning can be performed. Further, since the dust collection box has airflow communication from the communication path, the dust collection box is collected by dust generated by scraping up the rotating brush and suction air from the fan. Therefore, the number of times the trash is thrown away can be reduced, and the dust collection efficiency can be improved. For example, it is suitable for an industrial robot cleaner that cleans a large floor.

  In the self-propelled robot cleaner according to the present invention, the heavy dust scraped by the rotating brush first accumulates in the dust collection box, and the relatively light dust passes through the communication path, and the second dust collection chamber communicated with the suction fan. Therefore, even if the amount of dust stored in the dust collection box increases, dust collection is possible as it is, and continuous cleaning can be performed. Further, since the dust collection box has airflow communication from the communication path, the dust collection box is collected by dust generated by scraping up the rotating brush and suction air from the fan. Therefore, since the number of times the trash is thrown away is reduced and the dust collection efficiency is increased, a self-propelled robot cleaner that is easy to use can be provided.

The perspective view from the top of the self-propelled robot cleaner in Embodiment 1 of the present invention Top view of the self-propelled robot cleaner Bottom view of the self-propelled robot cleaner Rear view of the self-propelled robot cleaner Center vertical section of the self-propelled robot cleaner Perspective view from below with the cover of the traveling motor of the self-propelled robot cleaner removed Top view from above of the self-propelled robot cleaner with the front cover and upper body removed AA cross section near the left side of the self-propelled robot cleaner BB cross section near the front of the self-propelled robot cleaner Perspective view from above front of dust collection box of self-propelled robotic vacuum cleaner CC sectional view of the left side of the center of the self-propelled robot cleaner Perspective view from the rear upper side of the dust collection box Plan view of the self-propelled robot cleaner according to the second embodiment of the present invention (with the front cover and the upper body removed) Perspective view from above of the self-propelled robot cleaner Perspective view from above front of dust collection box of self-propelled robotic vacuum cleaner Perspective view from the front upper side of the dust collection box (with the upper channel taken out)

  The first invention includes a dust collecting nozzle portion having a rotating brush that sweeps up dust on the surface to be cleaned, a rear side of the dust collecting nozzle portion, communicating with the dust collecting nozzle portion, and a width of the rotating brush. A dust collection box having substantially the same opening, and a second dust collection chamber which is arranged behind the dust collection box and communicates with a suction fan, the dust collection box having a second dust collection chamber A communication passage is provided, and heavy garbage picked up by a rotating brush first accumulates in a dust collection box, while relatively light waste passes through the communication passage and enters a second dust collection chamber that communicates with a suction fan. Therefore, even if the amount of dust stored in the dust collection box increases, dust can be collected as it is, and continuous cleaning can be performed. Further, since the dust collection box has airflow communication from the communication path, the dust collection box is collected by dust generated by scraping up the rotating brush and suction air from the fan. Therefore, it is possible to reduce the number of times the trash is thrown away, and further increase the dust collection efficiency, which is suitable for, for example, an industrial robot cleaner that cleans a large floor.

  In the second invention, in particular, the communication path of the first invention is configured at a position higher than the bottom surface of the dust collection box. In addition to the effects of the first invention, even if dust accumulates in the dust collection box, The communication path to the second dust collection chamber is less likely to be clogged, and continuous cleaning can be performed.

In the third invention, in particular, the communication path of the first or second invention is constituted by a hose. In addition to the effect of the first invention, the portion where the dust collection box is arranged is for overcoming the step. Even if it is configured to move up and down, the hose can absorb the up and down movement, so that the fixed second
The communication path with the dust collection chamber becomes possible.

  In the fourth invention, in particular, the second dust collection chamber according to any one of the first to third inventions is provided with a paper pack for collecting dust, and the dust is collected in the second dust collection chamber. Since the dust can be discarded together with the paper pack, the maintenance of the second dust collection chamber is reduced.

  In the fifth aspect of the invention, in particular, the communication passage according to any one of the first to fourth aspects is configured at the center of the dust collection box, and the opening communicating with the rear side of the main body of the dust collection nozzle is rotated. Even in a horizontally-long rectangular dust collection box equivalent to the brush width, it becomes easier to draw dust at both corners of the dust collection box into the communication path.

  In the sixth aspect of the invention, in particular, an upper flow path communicating with the communication path is formed at the top of the dust collection box according to any one of the first to fourth aspects of the invention, and the communication path is moved to one side of the upper flow path. When the communication port to the second dust collection chamber behind the dust collection box is provided on the side surface, the communication path can be shortened and the decrease in dust collection efficiency can be suppressed. Further, by arranging the communication path to the rear second dust collection chamber close to one side, it becomes possible to arrange a heavy battery near the center of the main body, and stability during running is increased.

  In the seventh aspect of the invention, in particular, an upper flow path communicating with the communication path is formed in the upper part of the dust collection box of any one of the first to fourth aspects of the invention, and a maintenance brush or the like is provided in a partial space of the upper flow path. This makes it easy to clean the trash attached to the dust collection box when the trash is thrown away.

  The eighth invention is provided with an opening / closing mechanism for attaching / detaching the paper pack according to any one of the fourth to seventh inventions from the rear of the main body, and the rear part for the person to push the self-propelled robot cleaner. The paper pack can be removed and attached on the spot when standing up, and the paper pack can be effectively exchanged.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 is a perspective view from above of the self-propelled robot cleaner according to Embodiment 1 of the present invention, FIG. 2 is a plan view of the self-propelled robot cleaner, and FIG. 3 is the self-propelled robot cleaner. 4 is a rear view of the self-propelled robot cleaner, FIG. 5 is a central longitudinal sectional view of the self-propelled robot cleaner, and FIG. 6 is a traveling of the self-propelled robot cleaner. FIG. 7 is a plan view from above of the self-propelled robot cleaner with the front cover and the upper body removed, and FIG. 8 is the self-propelled type. AA sectional view near the left side of the robot cleaner, FIG. 9 is a BB sectional view near the front of the self-propelled robot cleaner, and FIG. 10 is a dust collection box of the self-propelled robot cleaner. FIG. 11 is a cross-sectional view of the center of the self-propelled robot cleaner, taken along the line CC, FIG. Is a perspective view from above after the dust collecting box.

  1 to 12, a self-propelled robot cleaner 1 (hereinafter simply referred to as “robot cleaner”) according to the present embodiment has a substantially D-shaped main body 2 that is alphabetical in plan view, and has a battery 3 on the left side. Left and right traveling motors 4 (see FIG. 6) that are respectively driven to rotate by using the battery 3 as a power source; A fan unit 7 disposed on the second dust collection chamber 6, a dust collection nozzle portion 8, and a dust collection box 9 disposed on the rear side of the main body of the dust collection nozzle portion 8 are provided. The front body 10 including the dust collection box 9 is closer to the floor than the low body 11 on which the wheels 5 are arranged.

  The battery 3 arranged on the left side is detachable by a key 12 to prevent theft. In addition, a caster 13 is provided at the rear bottom of the main body 2, and a handle 14 for pushing is provided at the rear of the robot cleaner 1 so that it can be pushed and moved by a person.

  The main body 2 mainly includes a low body 11 that forms a bottom surface, an upper body 15 that is formed from the top surface to the side surface, a front cover 16 that rotates by a shaft support that allows the dust collection box 9 to be attached and detached, and a second body A rear cover 17 that forms an open / close lid of the dust collection chamber 6 is provided. A plurality of sensors 18 that detect front obstacles in a non-contact manner, a sensor cover 19 that includes the sensors 18 inside, and a switch (not shown) that is retracted by contact with the obstacles are provided on the peripheral surface of the main body 2. A bumper 20 to be turned on is attached.

  The front body 10 at the lower front side of the main body 2 is provided with a suction port 21 having a horizontally long rectangular shape, and a brush cover 22 extending left and right is formed above the suction port 21. 23 is accommodated. The brush cover 22 is fastened to the front body 10 from above with a resin screw 24 (FIG. 7), and can be easily removed with a one-yen coin or the like, so that maintenance is easy.

  The rotating brush 23 is composed of a rotating shaft 25 in the left-right direction and a plurality of brushes 26 that are radially and spirally planted on the outer periphery thereof. The brush 26 protrudes downward from the suction port 21.

  As shown in FIG. 8, a motor 27 for the rotary brush 23 is provided on the front left side of the dust collection nozzle portion 8, and is stretched between the left end of the rotary shaft 25 and the output shaft 27 a of the motor 27. The timing brush 28 enables the rotary brush 23 to rotate in the direction of arrow A in FIG.

Further, a side brush motor 29 is attached to the front body 10 on the right side of the suction port 21, and a gear box of a mechanism in which the side brush 30 moves up and down on a rotation shaft (not shown) of the side brush motor 29 in the rotation direction. 31 is communicated. A rotation shaft 31a of the gear box 31 penetrates the front body 10 and a side brush 30 is provided. The side brush 30 and the rotating brush 23 serve as the dust collection nozzle portion 8. (Fig. 9)
On the other hand, in the front body 10 behind the dust collection nozzle portion 8 having the rotating brush 23, a dust collection box 9 is recessed by opening the front cover 16, and the dust collection nozzle portion 8 in the front body 10. The brush cover 22 is formed with a horizontally elongated rectangular opening 32 having a width substantially equal to that of the rotary brush 23, and the dust collection box 9 disposed at the rear of the brush cover 22 is also substantially the same as the rotary brush 23. An opening 33 having a horizontally long rectangular shape with the same width is formed, and the opening 32 of the brush cover 22 and the opening 33 of the dust collection box 9 are connected to each other.

  Further, the dust collection box 9 is provided with a communication passage 35 that communicates with the second dust collection chamber 6 through which the suction fan 34 communicates. Heavy dust among the dust scraped up by the rotating brush 23 accumulates in the dust collection box 9, but relatively light dust passes through the communication path 35 by the suction air from the suction fan 34 and enters the second dust collection chamber. It accumulates in 6. In addition, the communication path 35 is provided at the rear center of the horizontally long rectangular dust collection box 9 so that light dust scraped up near the corners on both sides of the horizontally long rectangular dust collection box 9 can be easily drawn into the communication path 35. It has been.

  In addition, the second dust collection chamber 6 communicated with the suction fan 34 is disposed at a higher position at a position further rearward than the dust collection box 9 behind the rotary brush 23, so that the second dust collection chamber 6 was scraped up by the rotary brush 23. Among the dust, relatively light dust is accumulated in the second dust collection chamber 6 by the suction air from the suction fan 34, and further, dust passing through the communication path 35 from the dust collection box 9 is collected in the second dust collection chamber 6. Even if the suction air of the suction fan 34 stops and the dust flows backward before entering, it remains in the dust collection box 9.

  As shown in FIG. 10, the dust collection box 9 has a horizontally long rectangular shape. The box body 36 and a lid 37 that closes the upper surface of the box body 36 are connected by a hinge 38 at the rear end, and the front buckle 39 is opened and closed. The lid 37 opens and closes. Also, the dust collection box 9 is formed with a laterally long rectangular opening 33 to the left and right having substantially the same width as the rotary brush 23, and the opening 33 is higher than the bottom surface 40 of the box body 36. The possibility that the dust stored in the dust collection box 9 flows backward and leaks from the suction port 21 of the front body 10 is reduced.

  Further, as shown in FIGS. 7 and 11, the robot cleaner 1 has two front bodies 10 each having a suction port 21 disposed close to the floor so that the robot cleaner 1 can get over the steps when traveling. With the hook 41 and the hooks 42 at the two rear portions, the front hook 41 is configured so that the rear hook 42 can be suspended from the sensor body 19 at four points and moved up and down. Therefore, since the dust collection box 9 installed in the front body 10 also moves up and down, the communication path 35 that connects the dust collection box 9 that moves up and down and the second dust collection chamber 6 fixed to the main body 2 is provided. The hose 43 (FIG. 8) is a soft material that can move flexibly.

  Further, in the dust collection form of the second dust collection chamber 6, a large amount of dust is stored. Therefore, the connection portion 44 of the communication passage 35 from the dust collection box 9 is located behind the dust collection box 9 and the second dust collection box 9 Since the configuration is arranged on the side surface of the dust chamber 6, dust collection using a paper pack 45 that can store a large amount of dust and is easy to clean when throwing away the dust is suitable. Furthermore, the paper pack 45 of the second dust collecting chamber 6 is configured to be detachable by opening and closing the rear cover 17 behind the main body 2.

  As shown in FIG. 12, the communication path 35 communicating from the dust collection box 9 to the second dust collection chamber 6 is formed on the back surface of the horizontally elongated rectangular opening 33 having the same width as the rotary brush 23. By connecting to the central opening 46 located, light dust that has been scraped up near the corners on both sides of the horizontally-long rectangular dust collection box 9 is also easily drawn into the communication path 35. Further, since the communication path 35 is provided at a position higher than the bottom surface 40 of the box body 36 and the bottom of the horizontally-long rectangular opening 33 having the same width as that of the rotary brush 23, Even if dust accumulates up to the horizontally elongated rectangular opening 33 having the same width as that of the rotating brush 23, the communication path 35 is not blocked by the accumulated dust.

(Embodiment 2)
FIG. 13 is a plan view of the self-propelled robot cleaner according to the second embodiment of the present invention (with the front cover and the upper body removed), and FIG. 14 is a perspective view from above of the self-propelled robot cleaner. 15 is a perspective view from the front upper side of the dust collection box of the self-propelled robot cleaner, and FIG. 16 is a perspective view from the front upper side of the dust collection box (a state where the upper flow path is taken out). . In addition, the same code | symbol is attached | subjected to the same part as the self-propelled robot cleaner in the said Embodiment 1, and the description is abbreviate | omitted.

  13 to 16, the self-propelled robot cleaner 1 according to the present embodiment forms an upper flow path 47 communicating with the communication path 35 at the upper part of the dust collection box 9, and the second dust collection chamber 6. The communicating path 35 that communicates is arranged close to one side of the upper flow path 47 of the dust collection box 9.

  By arranging the communication path 35 to the rear second dust collecting chamber 6 so as to be close to one side, the heavy battery 3 can be arranged near the center of the main body 2 and the stability during running is also improved.

  In the present embodiment, the upper channel 47 is detachably provided between the box body 36 and the lid 37. The upper flow path 47 has an air inlet 48 for sucking dust from the box body 36 at the center of the bottom surface, and is connected to the communication path 35 via a packing 49.

  Furthermore, the upper flow path 47 can also form a flow path in one half of the dust collection box 9 and constitute a storage part for storing maintenance parts such as a maintenance brush (not shown) in the space 50 on the opposite side. Yes, this facilitates cleaning of the dust attached to the dust collection box 9 when the waste is discarded.

  When the communication path 35 is made of a soft material hose 43, the suction air passing through the hose 43 is easily affected by the pressure loss in the hose 43, but in this embodiment, the communication path 35 is provided on one side of the dust collection box 9. Since one end of the hose 43 that forms the pipe is connected, the length of the hose 43 is shortened, pressure loss is reduced, and dust collection efficiency is improved.

  As described above, the self-propelled robot cleaner according to the present invention increases the amount of dust collected, and the dust collection box has airflow communication from the communication path. Since the dust is collected by the air sucked by the fan, the dust collection efficiency is improved and the continuous cleaning is possible. For example, it can be applied to a use such as a self-propelled robot cleaner for business that cleans a large floor. .

1 Self-propelled robot cleaner (robot cleaner)
2 Main Body 3 Battery 4 Traveling Motor 5 Wheel 6 Second Dust Collection Chamber 7 Fan Unit 8 Dust Collection Nozzle 9 Dust Collection Box 10 Front Body 11 Low Body 12 Key 13 Caster 14 Handle 15 Upper Body 16 Front Cover 17 Rear Cover (Open / Close) mechanism)
18 Sensor 19 Sensor Cover 20 Bumper 21 Suction Port 22 Brush Cover 23 Rotating Brush 24 Resin Screw 25 Rotating Shaft 26 Brush 27 Motor 27a Output Shaft 28 Timing Belt 29 Side Brush Motor 30 Side Brush 31 Gear Box 31a Rotating Shaft 32, 33 Opening Part 34 suction fan 35 communication path 36 box body 37 lid 38 hinge 39 buckle 40 bottom face 41, 42 hook 43 hose 44 connection part 45 paper pack 46 central opening 47 upper flow path 48 air inlet 49 packing 50 space

Claims (8)

A dust collecting nozzle portion having a rotating brush that sweeps up dust on the surface to be cleaned, and an opening that is arranged on the rear side of the dust collecting nozzle portion and communicates with the dust collecting nozzle portion and substantially the same as the width of the rotating brush. A dust collection box provided; and a second dust collection chamber disposed behind the dust collection box and communicated with a suction fan, wherein the dust collection box is provided with a communication path communicating with the second dust collection chamber. Self-propelled robot vacuum cleaner. The self-propelled robot cleaner according to claim 1, wherein the communication path is configured to be higher than the bottom surface of the dust collection box. The self-propelled robot cleaner according to claim 1 or 2, wherein the communication path is constituted by a hose. The self-propelled robot cleaner according to any one of claims 1 to 3, wherein a paper pack for collecting dust is disposed in the second dust collection chamber. The self-propelled robot cleaner according to any one of claims 1 to 4, wherein the communication path is configured at a central portion of the dust collection box. The upper flow path that communicates with the communication path is formed in the upper part of the dust collection box, and the communication path is arranged close to one side of the upper flow path. Self-propelled robot vacuum cleaner. 5. An upper flow path communicating with the communication path is formed in an upper part of the dust collection box, and a storage part for maintenance parts such as a care brush is formed in a partial space of the upper flow path. The self-propelled robot cleaner according to any one of the above. The self-propelled robot cleaner according to any one of claims 4 to 7, further comprising an opening / closing mechanism for attaching and detaching the paper pack from the rear of the main body.