JPH053845A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To obtain the vacuum cleaner for transferring surely a result of detection from a cleaning object detecting means provided on a floor suction implement to a cleaner main body side, without raising the manufacturing cost by a simple constitution. CONSTITUTION:A floor suction implement 1 is installed in a cleaner main body 2 through a suction hose 3, and in the floor suction implement 1, a rotary brush motor 5 fed through a power line 4 provided in the hose 3 from the cleaner main body 2, and a cleaning object detecting means 6 are provided, and a result of detection by the detecting means 6 is transferred to the cleaner main body 2 through the power line 4 and the suction capacity of a suction motor 25 of the cleaner main body 2 side is controlled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner which discriminates the type of an object to be cleaned and controls the suction capacity of a suction motor.

[0002]

2. Description of the Related Art In this type of vacuum cleaner, a wired or wireless transmission means is used as means for transmitting the detection result from the cleaning object detection means attached to the floor suction tool to the cleaner body side. It is considered. However, in the wired type, there is a drawback that wiring for signal transmission is newly required, and in the wireless type, the detection result may not be reliably transmitted to the cleaner body side due to noise of the motor or the like,
Further, there is a drawback that the device becomes large and the manufacturing cost increases.

[0003]

SUMMARY OF THE INVENTION The present invention has a simple structure and ensures that the detection result from the cleaning object detection means provided on the floor suction device is provided on the cleaner body side without increasing the manufacturing cost. The purpose is to obtain a vacuum cleaner that is adapted to transmit.

[0004]

In order to achieve the above object, an electric vacuum cleaner according to the present invention is a vacuum cleaner in which a floor suction device is attached to a cleaner body through a suction hose. The rotating brush motor supplied from the cleaner body via the power line provided in the suction hose, and the cleaning object detection means are provided, and the detection result of the detection means is provided through the power line. It is characterized in that the suction performance of the suction motor on the cleaner body side is controlled by transmitting it to the cleaner body side.

[0005]

With the above construction, the detection result of the cleaning object detection means is transmitted to the cleaner main body side through the power line for supplying power to the rotary brush motor, and the suction motor's suction capability is determined by this detection result. Control. As a result, the power line for supplying power to the rotary brush motor is also used for transmission of the detection result of the cleaning object detection means to the cleaner body side.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the vacuum cleaner of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes an electric floor suction tool which is attached to a cleaner body 2 of an electric vacuum cleaner through a flexible suction hose 3.
A motor 5 for a rotary brush, which is supplied to the floor suction tool 1 from the cleaner body 2 through a power line 4 provided in the suction hose 3, and a cleaning target for detecting the type of the cleaning target. The object detection means 6 is included.

The rotary brush motor 5 rotates at high speed a rotary brush (not shown) that is axially supported facing the suction port (not shown) of the floor suction tool 1, thereby cleaning the object. Dust is picked up from an object, and the lifted dust is passed from the floor suction tool 1 through the suction hose 3 to the cleaner body 2
It is configured to suck inside.

The cleaning object detecting means 6 is shown in FIGS.
As shown in FIG. 3, an optical path tube 10 is provided in which the central portion 7 is bent so as to approach the bottom surface side of the floor suction tool 1, and a movable surface 8 is provided on the lower surface of the central portion 7 via a hinge portion 9, The infrared light emitting element 11 is attached to one end of the optical path tube 10, and the light emitting element 1 is attached to the other end of the optical path tube 10.
1 and the infrared light receiving element 12 attached so as to face the movable surface 8, and the movable surface 8 moves up and down along the object to be cleaned, whereby the movable surface 8 moves up and down depending on the type of the object to be cleaned. The output voltage of the infrared light receiving element 12 is changed by increasing or decreasing the optical path width of the central portion 7 of 10 to change the amount of received light.

That is, the object to be cleaned is the flooring plate floor 13
When it is hard and flat like the floor suction tool 1
The movable surface 8 does not come into contact with the object to be cleaned because it is supported by the lower case and the lower case (see FIG. 2). Then, at this time, as shown in FIG. 4, the amount of light received by the infrared light receiving element 12 becomes maximum.

On the other hand, when the object to be cleaned has long and soft hair such as the carpet 15, the floor suction device 1 sinks into the carpet, so that the movable surface 8 is pushed by the carpet and moves upward to move the optical path. The optical path width of the central portion 7 of the tube 10 is minimized (see FIG. 3). At this time, as shown in FIG. 4, the amount of light received by the infrared light receiving element 12 becomes the minimum.

Further, the object to be cleaned is the floor board floor 1.
For example, in the case of tatami mats and carpets having short hairs, the amount of light received by the infrared light receiving element 12 is a value between the floor 13 and the carpet 15, as shown in FIG.

Next, FIG. 4 is an electric circuit diagram showing an electrical relationship among the attachment portion 16 including the floor suction tool 1, the cleaner body 2 and the suction hose 3, in which FIG. A phase control circuit for converting the output signal obtained by the element 12 into a constant pulse width, 18 is a power control element, 19 is a dummy resistor, and the series circuit of the power control element 18 and the dummy resistor 19 is the attachment section 16 It is connected to the pair of power lines 4 inside, and the output of the phase control circuit 17 is connected to the trigger terminal of the power control element 18.

Numeral 20 is an on / off switch for the rotary brush motor 5.

Reference numeral 21 is an output extracting resistor provided on one power line 4 in the cleaner body 2, 22 is a filter, 23 is a current detecting circuit, and 24 is a suction motor 25 that controls the phase of the suction motor 25. Suction motor control circuit that changes suction capacity, 2
6 is a power supply cord.

FIG. 5 is an explanatory circuit diagram showing a schematic circuit of a main part of the attachment section 16 including the phase control circuit 17 and its voltage-time relationship. In FIG. 5, 27 is synchronized with twice the power supply frequency. A reference numeral 28 is a triangular wave generating circuit for generating a triangular wave, and 28 is a comparator circuit for comparing the detected output voltage from the light receiving element 12 with the signal of the triangular wave generating circuit 27 to generate a phase control pulse.

The comparator circuit 28 of the phase control circuit 17 is responsive to the detected output voltage from the light receiving element 12.
The power control element 18 is phase-controlled by the phase control pulse output from the power control element 18 to supply power to the dummy resistor 19 and the detection result of the detection means 6 is passed through the power line 4 to the cleaner body 2 side. Communicate to. The dummy resistor 19
The carpet is supplied with 100 percent power, and the flooring floor is supplied with 0 percent power.

On the cleaner body 2 side, the transmitted detection result of the detection means 6 is taken out as a current by the output take-out resistor 21, and the result is detected by the suction motor control circuit 24 via the current detection circuit 23. Accordingly, the suction motor 25 is phase-controlled to control the suction ability of the suction motor 25 to change.

That is, the power line 4 for supplying power to the rotary brush motor 5 is also used for transmission of the detection result of the cleaning object detection means 6 to the cleaner main body 2 side. It is possible to control the suction capability of the suction motor 25 on the cleaner body 2 side by transmitting the detection result according to the type of the cleaning object to the cleaner body 2 side without requiring a signal transmission wiring. It is possible to perform cleaning with an appropriate suction capacity according to the type of the object to be cleaned.

[0020]

The present invention is configured as described above, and the detection result from the cleaning object detecting means provided in the floor suction tool is the power line for supplying power to the rotary brush motor of the floor suction tool. Since it is transmitted to the main body of the cleaner via the power line, the power line can also be used for transmission of the detection result of the cleaning object detecting means to the main body of the cleaner, thereby increasing the manufacturing cost.
It is possible to obtain an electric vacuum cleaner in which the detection result from the cleaning object detection means is surely transmitted to the cleaner body side.

[Brief description of drawings]

FIG. 1 is an electric circuit diagram of a main part of an embodiment of an electric vacuum cleaner of the present invention.

FIG. 2 is a cross-sectional plan view of essential parts of a floor suction tool when the cleaning object is a flooring board floor.

FIG. 3 is a cross-sectional plan view of a main part of the floor suction tool when the cleaning object is a carpet.

FIG. 4 is a relationship diagram between the amount of received light and time depending on the difference of the cleaning object.

FIG. 5 is a circuit diagram for explaining the main part of the same.

[Explanation of symbols]

 1 Floor suction tool 2 Vacuum cleaner body 3 Suction hose 4 Power line 5 Rotating brush motor 6 Cleaning object detection means 25 Suction motor

Claims (1)

Claim: What is claimed is: 1. A vacuum cleaner main body, wherein a floor suction tool is attached via a suction hose, wherein the floor suction tool is provided in the suction hose from the cleaner main body. A rotary brush motor fed through an electric power line and a cleaning object detection means are provided, and the detection result of the detection means is transmitted to the cleaner body side via the power line to suck the cleaner body side. An electric vacuum cleaner characterized in that the suction ability of a motor is controlled.