JP2525941B2 - Electric vacuum cleaner - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an electric vacuum cleaner used in general households, and more particularly to a rotating brush driven by a brush motor and a sensor that detects the type of floor surface in the brush section. The present invention relates to an electric vacuum cleaner.

[Prior Art] FIG. 5 is a schematic view showing a structure of a conventional vacuum cleaner disclosed in, for example, Japanese Patent Laid-Open No. 1198519/1985, in which the vacuum cleaner (1) is installed in a main body (2). It has an electric blower (4) supplied with electric power from a commercial power source (3), and an exhaust port (5) is opened in the main body (2) on the exhaust side of the electric blower (4).

And, on the intake side of the electric blower (4), a dust collection chamber (6)
Is provided, and the upper part of the dust collecting chamber (6) is configured by an openable / closable lid (7), and an intake port (8) is opened in the openable / closable lid (7). 7) and the dust collecting chamber (6) are sealed by a packing (9).

Further, the front wheel (10) and the rear wheel (1
1) is provided so that the main body (2) can be moved.

A flexible hose (12) is connected to the intake port (8) at its proximal end, and a remote part (13) is provided at the tip of the hose (12). Hoses (12)
The remote portion (13) and the main body (2) are electrically connected by connecting the base end side of the to the intake port (8).

Then, the remote unit (13) selects a power consumption of the electric blower (4) or sets the remote switch (14) to the “auto” mode, a switch (15) for turning the brush motor on and off, and the selected power. It is composed of a display section (16) for displaying the operation mode according to the.

A suction pipe (17) is connected to the remote portion (13), and a brush portion (18) is connected to the tip of the suction pipe (17).

Further, the brush portion (18), as shown in detail in FIG.
In the floor brush body (19), from the body (2) to the remote part (1
It has a brush motor (20) that is supplied with electric power via the brush motor (3), and a rotating brush (2) is provided near the brush motor (20).
1) is rotatably supported, and the rotating brush (21) transmits the driving force from the brush motor (20) via the belt (22).

A control means (23) is provided in the floor brush body (19), and the control means (23) has a light emitting element (24) and a light receiving element (25) for detecting the type of floor surface. And a floor contact switch (27) including a micro switch for detecting that the bottom surface of the floor brush main body (19) is in contact with the floor.

 Next, the operation will be described.

When the "auto" mode is set by the remote switch (14), the sensor (26) and floor contact switch (27)
To start the operation.

The light beam emitted from the light emitting element (24) of the sensor (26) is reflected by the floor surface and is received by the light receiving element (25) as indicated by the broken line arrow in the figure.

The reflectance of the reflected light received by the light receiving element (25) differs depending on the type of floor surface, that is, the amount of light received by the light receiving element (25) differs, and the light receiving element (25) accordingly.
The strength of the signal output from will differ.

For example, in the case of a carpet, since the reflectance is low and the light is diffusely reflected as compared with the space between the tatami mat and the board, the amount of light received by the light receiving element (25) is small, whereby the space between the carpet and the tatami mat can be discriminated.

Furthermore, when the identification signal output from the light receiving element (25) is input to the control means (23), the control means (23) identifies the type of floor surface by this identification signal, and the floor surface is a carpet. Drives the rotating brush (21) by the brush motor (20) and controls the electric blower (4) of the main body (2) to operate strongly.

If the floor is between tatami mats and boards, brush motor (2
Turn OFF (0) to stop the rotating brush (21) and control the electric blower (4) so that it runs weakly.

Further, when the brush part (18) is separated from the floor surface, the output signal level of the floor surface contact switch (27) changes, and the control means (23) for inputting the output signal of the floor surface contact switch (27).
Controls the brush motor (20) and the electric blower (4) to stop due to the change in the output signal level.

In addition, "strong""medium" by remote switch (14)
When any one of the “weak” modes is selected, the sensor (26) and the floor contact switch (27) stop operating, and only the electric blower (4) is selected as “strong”.
The operation corresponding to one of the "medium" and "weak" modes is performed.

[Problems to be Solved by the Invention] Since the conventional vacuum cleaner is configured as described above, there is a problem that the sensor operates only when set to the "auto" mode and the sensor cannot be effectively used. Yes,
Further, conventionally, there has been a problem that a wiring is complicated because a signal line and a power line are required for each sensor.

The present invention has been made to solve the above problems, and an object thereof is to obtain an electric vacuum cleaner that can effectively use a sensor or the like even in a mode other than the "auto" mode and has a simplified wiring.

[Means for Solving the Problem] The present invention is provided with a hose portion having one end connected to a cleaner body, a hand portion provided in the hose portion for selecting an operation mode, and arranged at the other end of the hose portion. In a vacuum cleaner provided with a brush part, a sensor arranged on the brush part for detecting the kind of floor surface, and a rotary brush driven by a motor arranged on the brush part The full-wave half-wave converter that converts the voltage waveform supplied to the brush section into full-wave / half-wave and the full-wave half-wave converter based on the signal output from the sensor according to the type of floor surface Full-wave / half-wave detector for controlling means, full-wave / half-wave detector for detecting full-wave / half-wave arranged in brush part and converted by full-wave / half-wave converter The motor supply voltage of the brush is turned on based on the detection of
It is provided with a motor drive means for turning on / off and an input means for controlling the full-wave / half-wave converter independently of the full-wave / half-wave conversion condition based on the output signal from the sensor.

Furthermore, the vacuum cleaner according to the present invention includes two power supply lines for supplying power from the hand portion to the brush portion, and one signal line connecting the brush portion and the hand portion, and signal transmission between the hand portion and the brush portion. Is performed using a signal line and a power supply line.

[Operation] The electric vacuum cleaner according to the present invention detects the type of the floor surface and the like by the sensor provided in the brush portion, and inputs the signal from the sensor to the control means provided in the hose portion through the electric wire, The control means controls the full-wave half-wave converter based on the signal from the sensor, and the full-wave half-wave converter converts the waveform of the electric power supplied to the brush portion into the full-wave or half-wave, and then to the brush portion. ON / OFF control of the motor is performed by the full-wave and half-wave of the power supply. Further, in the electric vacuum cleaner according to the present invention, signal transmission between the hand portion and the brush portion is performed using the signal line and a part of the power supply line.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an electric circuit of the electric vacuum cleaner, which includes a main body part (2) part (not shown), a remote part (13),
It is divided into the brush section (18).

Then, the electric power from the AC power source (3) is passed through the electric wires (50c) and (50d) built in the host (12) to the remote unit (1).
3) and the electric wire (50c), (50
A transformer (51) for converting the voltage of the supplied electric power into a predetermined value is connected to d).

A rectifier circuit (52) is connected to the transformer (51), and the remote section (1) is connected to the output of the rectifier circuit (52).
3) The handy CPU (53) as a control means for controlling the operation of
Vcc is connected, and the output of the rectifier circuit (52) is an electric wire (5
8a) is also connected.

In addition, connect the wire (50
d) connected to a driver circuit (57) that drives a triac (56) as a full-wave half-wave converter arranged in series to convert the current waveform from the power supply (3) into full-wave / half-wave There is.

The CPU (53) on hand has an “auto” mode switch (32), an on / off switch (33), an “auto” mode LED (34) as a display unit, an on LED (35), “strong” “ During"
"Weak" mode switch (36), (37), (38), "strong""medium""weak" LED (39), which displays the selected "strong""medium""weak" mode (40), (41), and an "off" switch (42) for stopping the operation are connected. When the on / off switch (33) is "on", the full-wave half-wave converter is forcibly set to "full-wave" because it is in the brush rotation mode. When the on / off switch (33) is "off", the full-wave half-wave converter is forcibly set to "half-wave" because it is in the brush stop mode.

The full-wave and half-wave electric power from the remote part (13) is converted to the electric wire (58) attached to the suction pipe (17).
It is adapted to be supplied to the brush section (18) via a) and (58b), and the electric wires (58a) and (58b) are rectified by a rectifying circuit (59) and a pressure reducing resistor (59). 60) are connected in series.

Further, the electric wires (58a) and (58b) have full-wave / half-wave detection units (6) for detecting the waveform (full-wave or half-wave) of the supplied power.
1) and a brush motor (2) that drives the rotating brush (21)
0) is connected in parallel, and the brush motor (20) is connected in series with a triac (62) controlled by the output of the full-wave half-wave detector (61).

The current rectified by the rectifier circuit (59) is supplied to the full-wave / half-wave detection unit (61) and the sensor unit (26), and the sensor unit (26) connects the signal line (62a). Is connected to the analog input terminal of the CPU (53) at hand and is also connected to the output of the rectifier circuit (52) via the electric wire (58a), whereby wiring is omitted.

As shown in detail in FIG. 2, the sensor section (26) has a resistor (65), a light emitting diode (66) and a light emitting diode (67) connected to the output side of the rectifier circuit (59). A resistor (68), a phototransistor (69), a resistor (70) and a phototransistor (71) are connected in parallel on the side of the electric wire (58a).

Further, the light emitting diode (66), the phototransistor (71), the slit disk, and the like constitute a sensor (72) for detecting the sliding of the brush portion (18), and the light emitting diode (67) and the phototransistor (69). And constitute a sensor (73) forming a part of the floor surface detecting means.

Then, as shown in FIG. 3, when the optical path of the sensor (73) is opened, the phototransistor (69) is turned on, and there is no resistance in this path. A high output (H) close to is obtained.

Therefore, when the optical path of the sensor (73) is blocked, the resistance (68),
The output voltage corresponding to (70) is obtained.

When the phototransistor (71) is ON, the current flowing through the resistor (70) increases, and the output (M) is obtained by the voltage dividing ratio of the resistors (68) and (70). When is off, the output (L) is obtained from the voltage division ratio of the resistors (68) and (70), and the type of floor surface is discriminated by this.

 Next, the operation of this embodiment will be described.

When the power plug of the vacuum cleaner is connected to the outlet, the CPU (53) at hand sets a built-in timer to a predetermined time and sets a mode flag for storing the type of switch to be input to "off" mode.

Then, in order to instruct the main body (2) to perform the “off” operation,
Data is created according to a predetermined frame format, and mode data is output from the serial data transmission terminal.

Then, the output mode data is input to the serial data receiving terminal of the main body CPU via the signal line.

Furthermore, when the main unit CPU detects the mode data input from the serial data reception terminal, it decodes the data content and if the data content is in the "off" mode, sets the operation flag to "off" operation. Then, the response data notifying that the data has been normally received is returned.

 Then, after the response data is transmitted, "off" operation is performed.

On the other hand, the response data is input to the serial data receiving terminal of the local CPU (53) via the signal line.

Then, the hand-held CPU (53) confirms the received response data and ends the "off" mode transmission / reception operation.

As a result, the electric blower (4) is always in a stopped state when the power is turned on.

Next, the local CPU (53) is connected to the "auto" mode switch (32), ON / OFF switch (33),
"Strong", "Medium" and "Weak" mode switches (36), (37),
(38), the "off" switch (42) is scanned, and it is determined whether or not there is a switch input.

If there is no switch input, the mode data is communicated as described above, and after receiving the response data, the LED corresponding to the corresponding mode is turned on.

If there is no key input after power ON, the data of "OFF" mode is transmitted again.

Also, for example, if the "weak" switch (38) is pressed,
The local CPU (53) is in the "weak" mode, and "weak" mode data is transmitted in the same manner as described above.

And the main CPU that receives the "weak" mode data
Set the operation flag to "weak" and send back a response to perform "weak" operation.

Then, the response data is sent to the local CPU (5
It is input to the serial data reception terminal of 3).

Further, the CPU (53) at hand checks the received response data and turns on the LED (41) corresponding to the "weak" mode.

 The same applies to the "strong" and "medium" modes.

Also, when the "auto" mode switch (32) of the sensor power brush control section (30) is pressed, the hand that receives the signal from the "auto" mode switch (32)
The CPU (53) determines the type of floor surface and the sliding of the brush portion (18) based on the signal from the sensor unit (26). If the floor surface is a carpet, the driver (57) causes the triac (56).
Is driven to make the waveform of the electric power supplied to the brush section (18) full-wave, and the "auto" mode data is transmitted.

Further, the main body CPU, when detecting the mode data input from the serial data receiving terminal, decodes the content of the data, and when the content of the data is the “auto” mode,
The operation flag is set to "auto" operation, and then the response data indicating that the data has been normally received is returned.

Then, after the response data is transmitted, "automatic" operation is performed, that is, suction is performed with a suction force corresponding to the type of floor surface (carpet).

On the other hand, the response data is input to the serial data receiving terminal of the local CPU (53) via the signal line.

Then, the handy CPU (53) confirms the received response data and supports the "auto" mode.
Turn on the LED (34).

Then, the waveform of the supplied power is the full-wave half-wave detector (6
Detected by 1), full wave TRIAC (62)
Is brought into conduction, the brush motor (20) is driven (see FIG. 4), and the rotating brush (21) is rotated by the brush motor (20).

When the CPU (53) determines that the floor surface is between tatami mats or planks, the driver (57) drives the triac (56) to generate a half-wave waveform of the power supplied to the brush part (18). And turn on the "auto" mode LED (34) corresponding to the "auto" mode.

Then, the waveform of the supplied power is the full-wave half-wave detector (6
Detected by 1), triac in case of half wave (62)
By setting the conductive state, the plus motor (20) does not drive (see FIG. 4), the rotating brush (21) does not rotate,
The electric blower (4) sucks with a suction force corresponding to the space between the tatami mats or the plates.

When the "ON" mode is instructed by the ON / OFF switch (33), the brush motor (20) continues to be driven until the ON / OFF switch (33) is turned OFF. At this time, input LED
(35) lights up. By operating the on / off switch (33), the sensor can be operated and the sensor can be effectively used even in a mode other than the auto mode. That is, even when the on / off switch (33) is "off", the half-wave power is supplied, so the sensor can operate. Therefore, for example, when the power "strong" mode is set by brush cutting, sliding of the brush portion is determined, and power strong operation at the time of sliding and power stop or power down at the time of stop can be controlled. As a result, energy saving and noise reduction can be realized.

[Effects of the Invention] As described above, according to the present invention, the power supply unit is provided with two power supply lines for supplying power from the hand unit to the brush unit and one signal line connecting the brush unit and the hand unit. Since the signal transmission of the brush portion is performed by using the signal line and the power supply line, the wiring can be simplified by partially sharing the signal line and the power line. The full-wave half-wave converter is controlled based on the signal from the sensor that detects the type of floor surface, etc. Since the ON / OFF control of the motor is performed by the wave, the sensor can be operated in other than the "auto" mode and the sensor can be effectively used.

[Brief description of drawings]

FIG. 1 is an electric circuit diagram of an electric vacuum cleaner according to an embodiment of the present invention, FIG. 2 is an electric circuit diagram showing a sensor unit, FIG. 3 is a diagram showing an output of the sensor unit, and FIG. 4 is a brush motor. FIG. 5 is an operation time chart diagram, FIG. 5 is a schematic diagram showing a configuration of a conventional electric vacuum cleaner, and FIG. 6 is a schematic diagram showing a configuration of a brush portion of the conventional electric vacuum cleaner. In the figure, (2) is a main body, (12) is a hose, (13) is a remote part, (18) is a brush part, (20) is a brush motor, (21) is a rotary brush, (26) is a sensor part, (53) is a CPU at hand, (56) is a triac, (58a) and (58b) are electric wires, and (62a) is a signal wire. In the drawings, the same reference numerals indicate the same or corresponding parts.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshiyasu Hikuma 2-14-40 Ofuna, Kamakura-shi, Kanagawa Sanryo Electric Co., Ltd. Living Systems Laboratory (72) Inventor Akihiro Iwahara 1728 Omaeda, Hanazono-cho, Osato-gun, Saitama Prefecture Address 1 In Mitsubishi Electric Home Equipment Co., Ltd. (56) Reference Japanese Patent Laid-Open No. 1-198519 (JP, A) Shoukai 61-132959 (JP, U)

Claims (2)

(57) [Claims] 1. A hose portion having one end connected to a cleaner body, a hand portion provided on the hose portion for selecting an operation mode, a brush portion disposed at the other end of the hose portion, An electric vacuum cleaner comprising: a sensor disposed on the brush portion for detecting the type of floor surface; and a rotary brush driven by a motor disposed on the brush portion, wherein the electric vacuum cleaner is disposed at the hand portion, A full-wave half-wave converter that converts the voltage waveform supplied to the brush unit into a full-wave / half-wave, and controls the full-wave half-wave converter based on a signal output from the sensor according to the type of floor surface. A control unit, a full-wave half-wave detector disposed in the brush unit for detecting the full-wave / half-wave converted by the full-wave half-wave converter, and a full-wave in the full-wave half-wave detection unit・ Motor drive that turns ON / OFF the motor supply voltage of the brush section based on the detection of half-wave And a means for controlling the full-wave / half-wave converter independently of the full-wave / half-wave conversion condition based on the output signal from the sensor. . 2. A power supply device, comprising: two power supply lines for supplying power from the hand part to the brush part; and a single signal line connecting the brush part and the hand part. The electric vacuum cleaner according to claim 1, wherein the electric vacuum cleaner is formed by using the electric power supply line and the power supply line.