JPH02131734A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To enhance the suction force or the rotational force of a brush in accordance with a contaminated state of a floor surface by controlling rotation of a motor-driven air blower and a motor in response of an operation of a dust detector. CONSTITUTION:When suction dust flowing through a suction air course 4 cuts off a light beam of a light emitting diode 33, the received light quantity of a photodiode 35 decreased and an output becomes small, and as a result, transistors 45, 46 in which the photodiode 15 is connected to its bases become an OFF state and transistors 47, 48 become an ON state, respectively, and a light emitting diode 49 which becomes a display part is turned on. Also, by operation of a relay 42 connected in series to the light emitting diode 49, and a relay switch 42'', a rotation of a motor-driven air blower 2 contained in a body 1 is controlled and suction air is enlarged against a contaminated floor face, and also, a light emitting of the light emitting diode 49, and also, the rotation of the motor-driven air blower 2 provided on the body 1 and a motor 18 provided on a floor brush 10 are controlled simultaneously.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a dust detector device for a vacuum cleaner that is capable of detecting dust passing through a ventilation path.

[Conventional technology]

Conventionally, this type of vacuum cleaner was developed in U.S. Pat.
Regarding the configuration of Utility Model Application Publication No. 60-195660, the following are Nos. 10 to 1:
This will be explained with reference to FIG.

Suction air path (108) from the floor brush (109) of the vacuum cleaner to the suction port (not shown) of the vacuum cleaner body (not shown)
A light emitting diode (101) is provided in the lower inner case (111), and a photodiode (102) is provided in the upper case 010) facing the light emitting diode (+01) to receive light from the light emitting diode (101). This photodiode (102) is cleaned when a large amount of dust is contained in the airflow flowing through the suction air path (108). Light from the light emitting diode (101) is blocked by dust, and the amount of light received by the photodiode (102) decreases, resulting in a small output. As a result, the photodiode (1
02) is connected to the base of the transistor (103
) becomes OFF. Due to this. The next stage transistor (104) is turned off, and the transistor (104) is turned off.
5). (106) are each turned on, and the light emitting diode (107) serving as a display section lights up. When this light emitting diode (107) is lit, it indicates that it is sucking in dust. Also, when the suction dust disappears, the amount of light received by the photodiode (102) increases, contrary to the above, and the output increases.
This light emitting diode (1
07) was turned off to signal that there was no longer any dust to be sucked in, so the cleaning was finished.

[Problem to be solved by the invention]

however. Conventional dust detection devices like this only display the amount of dust being sucked, and do not specifically control the rotation of the electric motor built into the electric blower or floor brush to improve their cleaning performance. .

In view of the problem described in (A) above, the present invention has been developed to make the vacuum cleaner more efficient by catching the dust sucked in by the floor brush and controlling the rotation of the electric blower built into the main body or the electric motor built into the floor brush. The purpose is to obtain cleaning performance.

[Means to solve the problem]

A vacuum cleaner according to the present invention includes a vacuum cleaner main body that includes an electric blower and a dust collection chamber, a floor brush that includes a built-in electric motor that drives a rotating brush, and a ventilation pipe that communicates the floor brush with the dust collection chamber. In preparation, a dust detector that optically detects dust is installed on the -F flow side of the electric blower, and the dust detector is operated in conjunction with the operation of the dust detector. The rotation of the electric blower, the electric motor, or both the electric blower and the electric motor is controlled.

The vacuum cleaner according to the present invention controls the rotation of the electric motor and electric blower in conjunction with the operation of the dust detector, thereby efficiently cleaning dirty floors with high power and leaving the floors relatively clean. It can be cleaned with low power.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. (1
) has a suction port (3) and a dust collection chamber (
4), a vacuum cleaner body with an exhaust port (5) on the downstream side;
One end of (6) is removably attached to the suction port (3), and the other end is for the main body, and the original switch (7) and grip part (8).
) Flexible hose. (9). (9') has one end attached to the grip part (8) and the other end attached to the floor brush (1) which will be described later.
G) extension pipes each supported in a freely fitting manner;
(10) is a floor brush, and the appearance is the lower case (l1) and the E case (12). Furthermore, a bumper (13) made of soft material is fixed to both cases, a front lid (14) is detachably supported on the front upper surface, and a rotatable upper case (12) and a lower It consists of an elbow (15), which will be described later, which is held between the case (If). (16) has both ends connected to the lower case (11) and the front cover (+
A rotating brush that is rotatably supported by o and has a large number of bristles (+7) and (+7') planted in the center to collect dust. (1g) is an electric motor, and a bell (20) for rotating the rotating brush (16) is wound around the shaft (19). The other end of this belt (20) is wound around the shaft (2l) of the rotating brush (16). (2
2) is each F9 for controlling the rotation of the electric motor (I8).
This is a board having electrical components (2 3 ) (2 3'). (24) (24') is a notch formed in the lower case (11) for introducing outside air, and has filters (25) (25') inside thereof, respectively. There are support hole A (26) and support hole B (27) inside.
) with convex bearings A, B (2g), (29) and this convex bearing A, I3 (28).
(29) is rotatable so that the lower case (12) (It
) are supported by bearing holes A and B (30) (31) 1m. Also, the fitting part (3) present at the other end of the elbow (15)
2) is fitted with the pipe (9), and the outside air is passed from this floor brush (lO) to the vibrator (9), *base (6), as shown by the arrow. It is configured to flow out from a dust collection chamber (4), an electric blower (2), and an exhaust port (5). (33) is supported in support hole A (26), and the light emitting diode (35) is formed to have outside air passage hole A (34) around it. This photodiode is supported and is formed to have an outside air passage hole B (3B) around it as in the previous stage, and receives light emitted from the light emitting diode (33).

Next, the operation will be explained with reference to the circuit diagram shown in FIG. 'r
When the i-source plug (37) is plugged into an outlet (not shown) and the hand switch (7) is turned to 011, the transformer relay (38) becomes energized, and the two on the hand switch (7) side
The next circuit is stepped down. At this time, transformer relay (38)
The inner switch terminal (39) is attracted by the relay and turned ON, and the motor (18) on the primary circuit side is rectified by the diode bridge (40), further stepped down by the resistor (4!), and is operated through the relay (42'). In other words, the brush (
16) rotates. In addition, on the secondary circuit side, a light emitting diode (33) rectified by a diode bridge (43) is connected.
) The photodiode (35) receives the light. At this time, if the suction dust flowing through the suction air path (44) blocks the light from the light emitting diode (33), the potdiode (
The amount of light received by the photodiode (35) decreases, and the light output becomes smaller.As a result, the transistors (45) and (46) connected to the base of the photodiode (35) are turned off, and the transistors (47) and (48) are turned on, respectively. A light emitting diode (49) serving as a display section lights up. Furthermore, a relay (4) connected in series with a light emitting diode (49)
2) is also energized, and this relay (42) switches the relay switch (42'), which is connected in series to the resistor (4l) and the motor (l8) on the primary side, to the non-resistance circuit side (5o), and the motor (l8), in other words, if there is a lot of dust in the suction air passage (44), the light emitting diode (49)
) lights up to indicate to the user the dirt on the bed, and increases the rotational speed of the rotating brush (16) of the floor brush (IO) to improve the cleaning performance.

FIG. 8 also shows the electric blower #! built into the main body (1) by the operation of the relay (42) and relay switch (42') connected in series with the light emitting diode (49). The direction of (2) is controlled to increase the amount of air sucked into the dirty floor as described above. Furthermore, FIG. 9 shows the light emission of the light emitting diode (49), the electric blower (2) in the main body (1), and the electric motor (2) in the floor brush (1o).
The rotations of motors (2) and (18) are simultaneously controlled to improve the power of both electric motors (2) and (18) for use on dirty floors. It goes without saying that each motor (2) (1g) may be rotated steplessly depending on the brightness of the light emitting diode (49). Furthermore, in order to inform the user of the rotation condition of the electric motor (18), a standard rotation indicator lamp (not shown) separate from the indicator lamp (49) is connected in series with the resistor (4l) or a strong rotation indicator lamp (not shown) is connected in series with the resistor (4l). ) is connected in series to the non-resistance circuit side (5o), the functionality of the floor brush (10) can be further enhanced. It goes without saying that the same effect can be obtained even if these indicator lamps are installed as shown in FIGS. 8 and 9. Furthermore, by attaching these indicator lamps to the floor brush (10), the user can always see them during normal cleaning, which is very convenient.

〔Effect of the invention〕

As described above, according to the present invention, in response to the operation of the dust detector. By controlling the rotation of the electric blower or electric motor, you can not only increase the suction power or rotational force of the brush depending on the dirtiness of the bed, but also keep the bed clean. It is possible to power down each electric motor, resulting in a power saving effect.Furthermore, in the case of floor coverings such as carpets, the rotation is controlled, so it is useful for protecting the pile of the carpet).

[Brief explanation of drawings]

Figures 1 and 2 are external views of a vacuum cleaner that is an embodiment of the present invention, Figure 3 is an external view of the floor brush shown in Figure 1, and Figure 4 is a cutaway of the main parts of Figure 3. Cutaway cross-sectional view. Fig. 5 is a perspective view of the elbow, Fig. 6 is an enlarged sectional view of the bearing portion of the elbow, and Fig. 7 is a circuit diagram of the present invention. Figure 8. 9th
The figures are circuit diagrams of other embodiments of the present invention, No.
FIG. 11 is an external view of a floor brush, and FIG. 12 is a cross-sectional view of a main part of the light emitting device of the floor brush. In the figure, (l) is the vacuum cleaner body, (2) is the electric blower, (4) is the dust collection chamber, (6) and (7) are the ventilation pipes, (10
) is the floor brush, (16) is the rotating brush, (18) is the electric motor, and (33) and (35) are the dust detectors.

Claims (3)

[Claims] (1) Vacuum cleaner body with built-in electric blower and dust collection chamber,
A floor brush that includes a built-in electric motor that drives a rotating brush, and a ventilation pipe that communicates the floor brush with the dust collection chamber,
A vacuum cleaner characterized in that a dust detector for optically detecting dust is provided upstream of the electric blower, and the rotation of the electric blower is controlled in conjunction with the operation of the dust detector. . (2) Vacuum cleaner body with built-in electric blower and dust collection chamber,
A floor brush that includes a built-in electric motor that drives a rotating brush, and a ventilation pipe that communicates the floor brush with the dust collection chamber,
A vacuum cleaner characterized in that a dust detector for optically detecting dust is provided upstream of the electric blower, and the rotation of the electric motor is controlled in conjunction with the operation of the dust detector. (3) Vacuum cleaner body with built-in electric blower and dust collection chamber,
A floor brush that includes a built-in electric motor that drives a rotating brush, and a ventilation pipe that communicates the floor brush with the dust collection chamber,
A dust detector for optically detecting dust is provided upstream of the electric blower, and the rotations of the electric blower and the electric motor are controlled in conjunction with the operation of the dust detector. vacuum cleaner.