JPH0832256B2 - Vacuum cleaner - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner capable of detecting a floor surface and automatically controlling the power of a suction motor of a cleaner body.

2. Description of the Related Art Conventionally, in a vacuum cleaner, a user judges a floor surface and adjusts an appropriate suction amount according to the floor surface with a hand switch. The details will be described with reference to FIG. 4. 1 is a nozzle, 2 is a main body, 3 is a suction motor, 4 is a suction motor control means, and 5 is a hand switch.

However, in the above configuration, when cleaning with a vacuum cleaner, there is a problem that the user must judge the floor surface and adjust the suction amount to match the floor surface with the hand switch 5. there were.

Therefore, the object of the present invention is to automatically detect the floor surface and obtain an appropriate suction amount according to the floor surface, and also to automatically detect the floor surface and control the rotating brush according to the carpet and floor or tatami, Another object of the present invention is to provide a cleaner capable of appropriately detecting the floor surface even when the rotating brush is not used.

Means for Solving the Problems In order to achieve the above object, the present invention provides a cleaner body having a built-in motor for suctioning dust and the like, a rotary brush for agitating a floor, and a rotary brush motor for driving the rotary brush. A cleaning nozzle, a motor control means for controlling the rotary brush motor, a suction motor control means for controlling the suction motor, a motor load detection means for detecting a load of the rotary brush motor, An intermittent timer means for intermittently rotating the rotary brush motor, turning on and off the rotary brush motor according to the load of the rotary brush motor, controlling the output of the suction motor, and a vacuum cleaner During operation, when the rotary brush motor is off, the rotary brush motor is intermittently rotated.

Operation With the above configuration, the suction motor of the cleaner body can be automatically adjusted to an appropriate suction amount according to the floor surface by detecting a change in the load of the rotary brush motor.

Further, the rotary brush can be intermittently rotated, and at that time, the load of the rotary brush motor can be detected, and the rotary brush can continue to rotate when it is a carpet and stop it when it is on the floor or tatami.

Embodiments Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 show the first embodiment of the cleaning nozzle 6
Rotating brush motor 8 for rotating the rotating brush 7 inside
A motor control means 9 for controlling the rotating brush motor 8; and a motor load detecting means 10 for detecting the load of the rotating brush motor 8, and the motor load detecting means 10
The cleaner body 13 has suction motor control means 12 for controlling the suction motor 11 in response to a signal from the suction motor 11. The motor load detecting means 10 includes a motor voltage detecting means 14 for detecting the voltage of the rotary brush motor 8, an amplifying means 15 for amplifying the signal, and a floor / tatami mat or a carpet for amplifying the signal by the amplifying means 15. It is composed of a comparing means 16 for judging. Reference numeral 17 is a hand switch.

In the above configuration, when the power is turned on, the motor control means 9 and the suction motor control means 12 are activated to rotate the rotary brush motor 8 and the suction motor 11 to operate the suction of the rotary brush 7 and the cleaner body 13. Let At this time, the motor voltage detecting means 14 detects the voltage of the rotary brush motor 8 and sends a signal to the amplifying means 15. The amplifying means 15 amplifies this signal and sends the signal to the comparing means 16. This signal has a characteristic that a potential difference is generated between the time of floor / tatami and the time of carpet, and the comparison means 16 discriminates between floor / tatami or carpet and sends a signal to the suction motor control means 12. With this signal, the suction motor control means 12 controls the power of the suction motor 11. As a result, the cleaner body 13 can be adjusted to an appropriate suction amount suitable for the floor surface.

FIG. 3 shows a second embodiment, which is the structure of the above-described embodiment provided with an intermittent timer means 18 for intermittently rotating the rotary brush motor 8. Other configurations are the same as the configurations of the above-described embodiment, so description thereof will be omitted. .

In the above configuration, when the power is turned on, the motor control means 9 and the suction motor control means 12 are activated to rotate the rotary brush motor 8 and the suction motor 11 to operate the suction of the rotary brush 7 and the cleaner body 13. Let After that, the intermittent timer means 18 sends a signal to the motor control means 9, whereby the rotary brush 7 is intermittently rotated. Then, when the rotating brush 7 is rotating, the motor voltage detecting means 14 detects the voltage of the rotating brush motor 8 and sends a signal to the amplifying means 15. The amplifying means 15 amplifies this signal and sends the signal to the comparing means 16.
Due to the characteristic that this signal has a potential difference between the floor / tatami and the carpet, the comparison means 16 determines whether the floor / tatami or the carpet and sends a signal to the motor control means 9 and the suction motor control means 12. . Based on this signal, the motor control means 9 controls the rotary brush motor 8, and the suction motor control means 12 controls the power of the suction motor 11. As a result, the rotary brush 7 can be continuously rotated when the carpet is used, and stopped when the floor or tatami mat is used. Further, the vacuum cleaner body 13 can be adjusted to an appropriate suction amount suitable for the floor surface.

EFFECTS OF THE INVENTION As is clear from the above description, according to the present invention, by detecting a change in the load of the rotary brush motor, the suction amount can be automatically adjusted to an appropriate amount according to the floor surface, and the user can There is an effect that it is not necessary to judge the surface and use the hand switch to adjust the suction amount to an appropriate level for the floor surface.

Further, according to the present invention, the rotating brush can be intermittently rotated, and at that time, the load of the rotating brush motor can be detected, and the rotating brush can be controlled to continue rotating when the carpet is used and stop it when the floor or tatami is used. , The effect of knocking out dust and dirt from the carpet and the effect of reducing damage to the tatami mat by the rotating brush can be expected.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing a first embodiment of a vacuum cleaner of the present invention, FIG. 2 is a circuit block diagram thereof, FIG. 3 is a circuit block diagram showing a second embodiment, and FIG. FIG. 3 is a perspective view showing the vacuum cleaner of FIG. 6 ... Cleaning nozzle, 7 ... Rotating brush, 8 ... Rotating brush motor, 9 ... Motor control means, 10 ... Motor load detection means, 13 ... Vacuum cleaner body, 11 ... Suction motor, 12
…… Suction motor control means, 18 …… Intermittent timer means.

Claims (1)

[Claims] 1. A cleaner main body having a built-in motor for sucking in dust and the like, a cleaning nozzle having a rotary brush for stirring the floor surface and a rotary brush motor for driving the rotary brush, and the rotary brush motor is controlled. Motor control means, suction motor control means for controlling the suction motor, motor load detection means for detecting the load of the rotary brush motor, and intermittent timer means for intermittently rotating the rotary brush motor. And for controlling the output of the suction motor while turning on and off the rotation brush motor according to the load of the rotation brush motor, and for the rotation brush when the rotation brush motor is off during cleaner operation. A vacuum cleaner in which the motor is rotated intermittently.