KR930008365B1 - Auto-driving vacuum cleaner with means adapted for blowing - Google Patents

Abstract

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Description

Automated Vacuum Cleaner with Injector

1 is a plan view showing a prior art automatic cleaner.

Second degree copper cross section.

3 is an explanatory view showing that the edge portion of the wall is cleaned by the automatic driving cleaner of the prior art shown in FIG. 1 and FIG.

4 is a perspective view showing an automatic driving cleaner of the present invention.

5 is a perspective view showing the configuration of the injector according to the present invention.

Sections 8a, b or in the same operating state.

9a, b is an explanatory view showing a process of cleaning the wall corner portion by the automatic running cleaner of the present invention.

10 is a flow chart of the operation of the present invention.

* Explanation of symbols for main parts of the drawings

22: main body 28: electric blower

30: suction port 32R, 32L: rotary brush

38 exhaust pipe 39 cylinder

40: solenoid 41: piston

44: "T" shaped passage 46R, 46L: branch pipe

The present invention relates to an automatic driving cleaner equipped with an injection device, and in particular, to inject dust or dust in the wall corner portion where the two walls in the room meet to float air or dust on the wall corner portion The present invention relates to an automatic driving vacuum cleaner equipped with a spraying device which sweeps with a rotary brush and sucks it into a dust inlet to improve cleaning performance.

In the conventional automatic traveling cleaner, one of them is introduced in Japanese Patent Laid-Open No. 62-292126 as a proposal for cleaning the wall edge portion. The automatic driving cleaner introduced in the Japanese patent document is shown in FIG. 1 and FIG. 2 as a schematic configuration, and FIG. 3 shows cleaning of the wall corner portion with the rotary brush as close to the wall edge as possible. have.

The automatic traveling cleaner of the said patent document consists of the main body 1 which is close to an octagon when its external shape is seen in plan view. The main body 1 is driven by the wheels 3R and 3L driven by the right and left drive motors 2R and 2L, and the auxiliary wheel 4 is provided. The main body 1 has a power supply 5 and a movement control circuit 6 built therein, an electric blower 7 for generating an air suction input, and a dust collecting chamber 8 mounted on the suction side of the electric blower 7. In addition, the suction port 10 connected to the dust collecting chamber 8 by a hose 9 is configured, and the rotary brushes 12R and 12L which are driven by the rotary driving units 11R and 11L at both sides of the main body 1 are provided. It is installed. When the main body 1 is placed in the cleaning area, the driving wheels 3R and 3L are driven by the drive motors 2R and 2L to move forward, and the movement control circuit 6 is driven by signals from the obstacle sensing device and the position sensing device. Controls the drive motors 2R and 2L, and moves the entire inside of the cleaning area while repeating straight, stop, direction change, and the like. Rotating brushes 12R and 12L rotate during the movement of the main body 1 to guide the surrounding dust to the intake port 10 side, and the dust light sucked into the intake port 10 is connected to the air suction input of the electric blower 7. Dust is collected into the dust collecting chamber (8). In this patent document, when cleaning the wall edge portion, the main body 1 is advanced in parallel along one side wall so that one rotary brush 12R, 12L is close to the wall edge portion, and the main body 1 itself rotates. Rotating brushes 12R and 12L, which were close to the wall edges, move along the other wall and clean the wall edges. Rotation of the main body 1, the main body 1 is an octagonal shape, so that the self-rotation at the wall edge is possible as much as possible. However, the rotating brush (12R, 12L) close to the wall edge portion has a circular contour, while the wall edge portion is usually a portion where two walls are perpendicular to each other, so that the rotating brush (12R, 12L) has a maximum wall edge. Even if it is close to the part, the space area formed by the extension lines of the two walls and the contour arc of the rotary brush will not reach the rotary brush, so it will not be able to effectively clean the dust accumulated on it (see FIG. 3).

In the present invention invented in view of the above-mentioned point of the prior art in order to suck the dust in the wall corner portion to inject air to the wall corner portion to float the dust and immediately float the dust with a rotary brush to suck it into the dust intake This is to improve the cleaning performance.

Referring to the present invention in more detail based on the accompanying drawings as follows.

4 shows an autonomous vacuum cleaner according to the present invention, which is composed of a main body 22 having wheels 20R and 20L and auxiliary wheels 21 on both sides. The wheels 20R, 20L are coupled to the drive motors 24R, 24L through the reduction gears 23R, 23L in the main body 22, and the drive motors 24R, 24L are provided with distance measuring devices 25R, 25L. It is. Several sets of lead-acid batteries 26 are installed in the main body 22 as a power source, and a movement control circuit 27 is incorporated therein. In addition, the main body 22 has an electric blower 28 and a dust collecting chamber 29 for generating an air suction input, and the dust collecting chamber 29 is connected to a suction port 30 facing the bottom of the main body 22. Rotating brushes 32R and 32L are driven on both sides of the suction port 30 by the sole driving motors 31R and 31L. Several sets of obstacle detectors 33 are disposed on the front surface of the main body 22, and a display panel 34, a control panel 35, a main switch 36, and an electric motor switch 37 are disposed on the upper surface side. The electric blower 28 which generate | occur | produces an air suction input sucks air from the dust collection chamber 29 side, and exhausts it by guessing of the electric blower 28. As shown in FIG.

According to the present invention, the exhaust pipe 38 (FIG. 7) of the electric blower 28 constitutes an air supply source of the injector. This exhaust pipe 38 is composed of a cylinder 39, the piston 39 is installed in the cylinder 39 reciprocating by the solenoid 40 and the axial passage communicating with the exhaust pipe 38 in the piston 41 A "T" -shaped passage 44 is formed, which is composed of the 42 and the transverse passage 43 perpendicular thereto. The cylinder 39 has discharge ports 45 in which both ends of the transverse passages 43 formed in the piston 41 communicate with each other at each of these ends at different positions of the piston 41, that is, at the maximum extension position and the maximum retracted position. ) And the main supply mechanism 46 is connected.

As shown in FIGS. 5-7, the main supply mechanism 46 is branched into branch pipes 46R and 46L on both sides, and is associated with the injection holes 47R and 47L formed on the upper side of the rotary brushes 32R and 32L. have.

The automatic traveling cleaner of the present invention rounds the cleaning area while the movement control circuit 27 operates according to the automatic driving cleaning program to perform the cleaning operation while the electric blower 28 is operated. The detailed description related to such a cleaning operation is well shown in the patent application No. 90-3873, which is the applicant of the present invention.

At the time of cleaning the cleaning area, the automatic driving vacuum cleaner divides the cleaning area and searches the area to be cleaned sequentially and cleans the left and right reciprocating way (zigzag method) and returns to the original position after cleaning. In the automatic traveling cleaner, the main body 22 is driven by the wheels 20R and 20L and the auxiliary wheels 21 under the control of the movement control circuit 27, and the air suction input of the electric blower 28 is supplied to the suction port 30. The dust is transferred to the dust collecting chamber 29 through the suction port 30, and cleaning is performed. The bottom dust is guided to the suction port 30 by the rotary brushes 32R and 32L on both sides of the main body 22. .

After the automatic driving cleaner runs and recognizes that there is an obstacle such as a wall on one side of the main body 22, it determines whether there is an obstacle such as a wall at a distance that is about the front and rear length of the main body 22 in front, and if there is no obstacle Continue to continue and if there is an obstacle to recognize that the front of the body 22 is the wall corner to operate the solenoid 40 to move the piston 41 to the retracted position (Fig. 8a).

At this time, the air exhausted from the electric blower 28 causes the exhaust pipe 38 to be supplied to the main air supply unit 46 through the “T” -shaped passage 44 of the piston 41. Initially, the solenoid 40 is operated. If not, the piston 41 is in the extended position, and the air exhausted from the electric blower 28 is discharged from the exhaust pipe 38 through the "T" shaped passage 44 of the piston 41 to the outlet 45. Is released. At this time, the transverse passage 43 of the "T" -shaped passage 44 coincides with the discharge port 45. When the solenoid 40 is operated and the piston 41 retreats, the transverse passage 43 of the “T” -shaped passage 44 coincides with the main air supply mechanism 46 and the discharge port 45 is blocked so that air is released. It is supplied to the main air supply mechanism 46 side. The air sent to the main air supply mechanism 46 is supplied branched to the branch pipes 46R and 46L, and air is injected to the upper side of the rotary brush 32R and 32L through the injection ports 47R and 47L. The air injected in this way floats dust such as dust on the wall edges of the rotary brushes 32R and 32L that are not in contact with the rotary brushes 32R and 32L so as to enter the zone of influence of rotation of the rotary brushes 32R and 32L and the air suction input influence zone of the intake port 30. To assist intake by the intake port 30.

As described above, the present invention greatly improves the cleaning performance by injecting air into the dust in the wall edges so that the dust can be suspended and sucked. Figure 10 shows the operating flow chart of the present invention, those skilled in the art will be able to fully understand the operating flow of the injection device related to the cleaning of the wall edge portion with respect to the cleaning program of the automatic running cleaner.

Claims (2)

Wheels 20R, 20L are installed on the bottom of the main body 22, and rotary brushes 32R, 32L are installed on the front bottom, and an electric blower 28 installed in the main body 22 between the rotary brushes 32R, 32L. The suction port 30 through which the air suction input of the air is transmitted through the dust collecting chamber 29 is configured so that the main body 22 can be cleaned while traveling through the cleaning area according to the automatic driving cleaning program. Equipped with an injector, characterized in that it comprises branch pipes 46R, 46L for injecting air supplied from the blower 28 to the upper side of the rotary brush 32R, 32L to enable cleaning of the wall edges. Automated vacuum cleaner. The cylinder (39) according to claim 1, wherein the branch pipes (46R, 46L) are connected to the exhaust pipe (38) of the electric blower (28), and the cylinder (39) having a piston (41) having a "T" -shaped passage (44) therein. ), The piston 41 in the cylinder 39 is connected to the solenoid 40 so that the piston 41 is selectively connected to the branch pipes 46R and 46L. Automatic driving cleaner equipped with an injection device.