JP3188116B2 - Self-propelled vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled vacuum cleaner, in which a cleaning area is reduced by reducing an uncleaned area formed near a wall located in front of the traveling direction, and a garbage storage capacity is increased to reduce the frequency of trash disposal. The present invention relates to a self-propelled vacuum cleaner that can be reduced.

[0002]

2. Description of the Related Art Conventionally, there has been proposed a self-propelled cleaner in which a cleaner has a traveling function and can clean a floor surface by an unmanned person. Such a vacuum cleaner is, for example, as shown in FIG. 5, wheels b and c driven and steered by a drive motor on a vehicle body a.
And a vacuum device d and a suction port e for sucking up dust by the suction force of the vacuum device d, and a flow path f between the vacuum device d and the suction port e. And a lower dust collecting portion g located near the suction port e.
In addition, a dust collecting portion h using a paper pack for dust collection is provided at a high position of the vehicle body a near the vacuum device d.

[0003] Therefore, the coarse dust is collected in the dust collecting portion g below the suction port e, and the fine dust is collected in the dust collecting portion h near the vacuum device d.

[0004]

However, since the garbage is bulky, it is necessary to increase the volume of the garbage in the lower collecting part g, and the length l in the traveling direction of the collecting part is inevitably increased. Becomes larger.

[0005] As a result, the distance between the suction port e and the front end of the vehicle body a becomes longer. As a result, a large uncleaned area is formed at the front in the traveling direction when cleaning with respect to the wall, resulting in poor cleaning performance. is there.

As a result of repeated studies to reduce the uncleaned area, the inventors have found that a dust collecting section for storing intermediate-grade dust is provided between the upper and lower dust collecting sections, thereby reducing the conventional lower size. Part of the storage capacity of the dust collection part is also borne by this medium-sized dust collection part, reducing the volume of the lower dust collection part and increasing the overall demand for garbage collection. The present inventors have found that the frequency can be reduced, and have completed the present invention.

[0007] The present invention is a self-propelled vehicle capable of improving the work efficiency by reducing the uncleaned area near the wall, improving the cleaning efficiency, increasing the capacity of storing dust in the vehicle body, and reducing the frequency of dumping dust. The purpose is to provide a vacuum cleaner.

[0008]

SUMMARY OF THE INVENTION The present invention relates to a self-propelled cleaner in which a traveling / steering wheel is arranged on a vehicle body provided with a suction device for sucking dust. A first port disposed near the suction port and at the bottom of the vehicle body between the suction port provided at the bottom of the vehicle and opening toward the floor surface and the vacuum tool disposed on the vehicle body, and for storing rough dust. A dust collection unit, a final dust collection unit having a dust bag and containing fine dust, and a middle-class dust that is lighter than the heavy dust between the first dust collection unit and the final dust collection unit; A self-propelled vacuum cleaner characterized in that a second dust collecting part for storing the dust is provided at a higher place than the first dust collecting part.

It is preferable that the vacuum device is provided with a speed change means capable of adjusting the suction air volume by operation.

[0010]

By providing the above-mentioned structure, the rough dust and the intermediate dust conventionally stored only in the first dust collecting portion are changed to the first dust collecting portion, and the intermediate dust is stored in the second dust collecting portion. The dust is collected separately in the dust collection section. Therefore, the storage volume of the first dust collecting portion, particularly the length L of the first dust collecting portion in the traveling direction can be reduced, so that the uncleaned area generated near the wall of the standing wall portion located forward in the traveling direction of the vehicle body is reduced. It is possible to improve the cleaning efficiency.

The first dust collecting portion is provided at the bottom of the vehicle body,
Since the dust collecting part is provided at a higher position than the first dust collecting part, it is easy to collect and separate the rough dust and the intermediate dust.

Further, since the second dust collecting portion for collecting the most large amount of intermediate dust among the dust is disposed inside the vehicle body, the storage capacity of the dust in the vehicle body as a whole increases, and the dust is discarded. The number of times can be reduced, and the work efficiency can be improved.

In addition, by providing the second dust collecting portion, the burden on the final dust collecting portion is reduced, and the dust bag which is a consumable item can be saved.

When the suction volume of the vacuum device can be adjusted, the collection ratio to each dust collecting portion can be changed arbitrarily, the number of times of dust disposal can be further reduced, and the noise generated by the vacuum device can be reduced. It is possible to reduce power consumption and control.

[0015]

An embodiment of the present invention will be described below with reference to the drawings. 1 to 3, a self-propelled cleaner 1 includes a body body 3 provided with a suction device 2 for sucking dust and a wheel including a pair of drive wheels 4 and 4 and a caster wheel 5 arranged for steering. I have.

The driving wheels 4 are individually provided with a motor 2 with a speed reducer.
1 and the individual motors 21 with speed reducers
Control is performed by 2 so that the vehicle can travel along a predetermined traveling course. In addition, the traveling direction of the vehicle body 3 is changed based on the rotation difference between the left and right drive wheels 4, 4. The motor 21 with a speed reducer uses a battery BA loaded on the vehicle body 3 as a power source. The caster wheels 5 ensure the stability of the drive wheels 4,4.

The body 3 is provided with a suction device 2. The suction device 2 is provided on the bottom 3 a of the vehicle body 3,
By connecting a communication pipe 8 between the suction port 7 opening toward the floor F and the vacuum tool 9 disposed inside the vehicle body 3, the suction of the suction port 7 is performed by the operation of the vacuum tool 9. Can be done.

The communication pipe 8 has a first dust collecting portion 10 for storing rough dust from the upstream to the downstream, that is, from the suction port 7 side to the vacuum tool 9 side, and a second dust collecting portion for storing intermediate dust. And a final dust collecting section 12 for storing fine dust.

The first dust collecting portion 10 is provided on the bottom 3 of the vehicle body 3.
a is provided in a box-like body 23 which is provided below and forms the suction port 7. The box-like body 23 is provided in front of the suction port 7 in the traveling direction and is partitioned by a partition plate 24 that crosses the vehicle body 4, thereby forming an open-topped container located at the front end of the vehicle body 3 in the traveling direction, and is mainly formed. Large volume or heavy garbage is collected.

In this embodiment, a rotating brush 25 is provided inside the box-like body and in contact with the floor at the suction port 7, and the rotating brush 25 is rotated by using a motor or the like, so that the rotating brush 25 The attached dust can be swept up.

The second dust collecting part 11 is a box 26 having a relatively large internal volume that can be sealed and is disposed at a higher position than the first dust collecting part 10. An inlet 27 leading to the first dust collector 10 and an outlet 29 leading to the final dust collector 12 are formed at the upper part of the box-shaped body 26, respectively.

The inlet 27 is provided with a baffle plate 30 for guiding intermediate dust flowing through the first dust collecting section 10 toward the bottom 6a of the box-shaped body 26, while the outlet 29 is provided with a wire mesh 3. It prevents intermediate garbage from flowing upstream.

The final dust collecting section 12 includes a second dust collecting section 11.
Inlet 32 leading to vacuum and outlet 3 leading to vacuum device 9
And a dust-collecting bag 13 opened at the intake port 32 is housed in the container.

The dust bag 13 is a bag made of air-permeable cloth or paper, and can accommodate fine dust arriving through the second dust collecting section 11 in the dust bag 13. The dust collected by the driving is discharged from the exhaust port 33.

The vacuum device 9 includes a blower 34 having an intake end communicating with the exhaust port 32 to the final dust collecting section 12, and a motor M for driving the blower. An exhaust pipe 35 extending outside the vehicle body 3 is connected to the blower 34.

In this embodiment, the motor M is connected to the battery B
A DC shunt motor using A as a power source, and the motor M includes a speed change means 14.

The transmission means 14 includes a motor M as shown in FIG.
By inserting two resistors R1 in series with each other and closing the relay X1 by operating the switch PB, the resistor R1 is short-circuited.
Further, by opening the relay X1 and inserting R1 in series with the motor M, the voltage of the motor M decreases and the motor M rotates at low speed.

Further, the speed changing means 14 switches the frequency oscillated from the chopper control device V connected to the motor M in frequency f1 and frequency f2 to a switch PB.
The speed conversion of the switching motor M may be selectively performed by operating the relay X1a by the selection operation of “a”. Note that frequency f1
And the frequency f2 can be arbitrarily set by the chopper control device.

As the transmission means, a mechanical transmission such as a gear transmission is interposed between the blower 34 and the motor M, and the air volume is adjusted by changing the rotation speed of the output shaft of the transmission. Good. In addition, the speed may be changed to a plurality of speeds exceeding two speeds, and furthermore, the power supply current may be changed from a direct current to an alternating current, and the continuously variable speed may be controlled by inverter control.

When the motor M is driven, the suction port 7
Is sucked by the blower 34. Heavy dust among the dust sucked together with the air from the suction port 7 is collected in the first dust collector 10, intermediate dust is collected in the second dust collector, and fine dust is collected in the final dust collector 12. Stored in a dust bag.

As described above, since the dust is sorted and collected according to the size of the dust, a large amount of dust can be efficiently and efficiently stored in the vehicle body 3, and the first dust collecting portion 10 located at the bottom of the vehicle body 3 is Since it can be distributed and accommodated in the remaining dust collecting portion, it is possible to reduce the size.

Further, by providing the speed change means 14 in the vacuum device 9 as in the present embodiment, the amount of dust collected in the first, second and last dust collecting portions 10, 11, 12 is increased. Can be adjusted.

[0033]

As described above, the self-propelled vacuum cleaner according to the present invention has a second dust collector for storing intermediate dust between a first dust collector provided at the bottom of the vehicle body and a final dust collector. Since the portion is provided at a higher position than the first dust collecting portion, the amount of garbage can be increased, the number of times of garbage disposal can be reduced, and the size of the garbage can be collected separately to increase the work efficiency.

Further, the length of the first dust collecting portion can be reduced as compared with the conventional structure, and the uncleaned area generated at the wall of the standing wall portion located forward in the traveling direction can be reduced to improve the cleaning efficiency. improves.

Further, when the vacuum device 9 is provided with a speed changing means, the dust can be distributed to each dust collecting portion in accordance with the amount of dust, so that dust can be stored more efficiently, and noise reduction and energy saving can be achieved. It is possible to promote.

[Brief description of the drawings]

FIG. 1 is a sectional view in the traveling direction showing an embodiment of the present invention.

FIG. 2 is a horizontal sectional view thereof.

FIG. 3 is a wiring diagram schematically illustrating an example of control of a motor of the vacuum tool.

FIG. 4 is a wiring diagram schematically illustrating another example of control of the motor of the vacuum tool.

FIG. 5 is a sectional view in the traveling direction showing a conventional technique.

[Explanation of symbols]

 Reference Signs List 2 suction device 3 body main body 3a bottom 4, 5 wheels 7 suction port 9 vacuum tool 10 first dust collecting section 11 second dust collecting section 12 final dust collecting section 13 dust collecting bag 14 transmission means F floor surface

Continuation of the front page (72) Inventor Chen Akebono 2-1-1-1 Higashikamishi, Nagaokakyo-shi, Kyoto Japan Transport Equipment Co., Ltd. (56) References JP-A-64-30531 (JP, A) JP-A-57- 145636 (JP, A) Japanese Utility Model No. 2-126545 (JP, U) Japanese Utility Model Application No. 58-143658 (JP, U) Japanese Utility Model Application No. 58-91356 (JP, U) Japanese Utility Model Application No. 57-149853 (JP, U) Shokai 56-11749 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47L 9/10 A47L 11/204

Claims (2)

(57) [Claims] 1. A self-propelled vacuum cleaner having a traveling / steering wheel disposed on a vehicle body provided with a dust suction device, wherein the suction device is provided at a bottom portion of the vehicle body and provided on a floor surface. A first dust collecting portion disposed between the suction port opening toward the front and a vacuum device provided in the vehicle body, near the suction port and at the bottom of the vehicle body to store rough dust, and a dust bag. And a second dust collector for storing fine dust that is lighter than the heavy dust between the first dust collector and the final dust collector. A self-propelled vacuum cleaner, wherein the unit is provided at a higher position than the first dust collection unit. 2. The self-propelled vacuum cleaner according to claim 1, wherein said vacuum tool includes a speed change means capable of adjusting a suction air volume by operation.