JPH0473034A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To use a sensor effectively and simplify a wiring by providing the input of signal from a sensor for detecting the kind or the like of floor surfaces, to control a full-wave/half-wave converter, and by ON/OFF-controlling a motor with the full wave/half-wave of a power source to be fed to a brush Section. CONSTITUTION:Power transformed to full wave/half-wave from a remote section 13 is fed to a brush section 18 via electric wires 58a, 58b, and a sensor section 26 is connected to the analog input terminal of a handy CPU 53 If via a signal wire 62a. With three wires in this manner, the handy CPU, 53 and the brush section 18 are connected to each other, and so the signal wire 62a and power wires 58a, 58b are partially used in common, and a wiring can be simplified. Besides, based on signal from a sensor 73 for detecting the kind or the like of floor surfaces, a full wave/half-wave converter 61 is controlled, and the waveform of feed power is converted to the full wave or the half-wave and is composed to ON/OFF-control a motor 20 with the full wave/half-wave of a power source to be fed to the brush section 18, and so even in a mode except an 'AUTO' mode, the sensor is worked, and the sensor can be effectively used. Besides, the sensor 75 is composed of a light emitting diode 67 and a photo-transistor 69.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a vacuum cleaner used in general households, particularly a rotary vacuum cleaner driven by a brush motor and a sensor for detecting the type of floor surface etc. in the brush section. The present invention relates to a vacuum cleaner having:

[Prior Art] FIG. 5 is a schematic diagram showing the configuration of a conventional vacuum cleaner disclosed in, for example, Japanese Patent Application Laid-Open No. 198519. It has an electric blower (4) that is supplied with power from a power source (3), and the electric blower (
On the exhaust side of 4), an exhaust port (5) is opened in the main body (2).

A dust collection chamber (6) is provided on the intake side of the electric blower (4), and the upper part of the dust collection chamber (6) is composed of a lid (7) that can be opened and closed. 7) has an intake port (8), an opening/closing lid (7) and a dust collection chamber (6).
) is sealed by a seal (9).

Furthermore, front wheels (10) and (11) are located at the bottom of the main body (2).
is provided, thereby making the main body (2) movable.

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

Then, the remote part (13) selects the power consumption of the electric blower (4) or sets it to "auto" mode with a remote switch (14), and turns the brush motor ON10F.
It is comprised of a switch (15) that turns on the power, and a display section (16) that displays the operating mode according to the selected power.

Further, a suction vibrator (17) is connected to the remote part (13), and a brush part (18) is connected to the tip of the suction pipe (17).

Furthermore, the plan part (18), as shown in detail in FIG.
Insert the remote part (from the main body (2) into the floor brush main body (19)
It has a brush motor (20) which is supplied with power via a brush motor (20), and a rotary plan (21) is rotatably supported near the plan motor (20).
21) transfers the driving force from the brush motor (20) to the belt (
22).

A control means (23) is provided in the floor brush body (19).
The control means (23) includes a light emitting element (24) and a light receiving element (25) for detecting the type of floor surface.
a sensor (26) consisting of, and a floor brush body (19)
A floor contact switch (27) consisting of a microswitch is connected to detect that the bottom surface of the unit is in contact with the floor.

Next, the operation will be explained.

When the "auto" mode is set by the remote switch (14), the sensor (26) and floor contact switch (2
7) starts operating.

The light rays emitted from the light emitting element (24) of the sensor (26) are reflected off the floor and received by the light receiving element (25), as shown by the dashed arrow in the figure.

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

For example, in the case of a wiping top, the reflectance is lower and diffuse reflection occurs compared to between a tatami mat or a board, so the amount of light received by the light-receiving element (25) is small, thereby making it possible to distinguish between a wiping top, a tatami mat, or a board.

Further, the identification signal output from the light receiving element (25) is input to the control means (23), and the control means (23) identifies the type of floor surface based on this identification signal, and determines whether the floor surface is carpet. In this case, the rotating brush (21) is driven by the brush motor (20), and the electric blower (4) of the main body (2) is controlled to operate at high speed.

In addition, if the floor is between tatami mats or wooden boards, use a brush motor (20
) to stop the rotating brush (21) and control the electric blower (4) to operate at low speed.

Furthermore, 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 (for inputting the output signal of the floor surface contact switch (27))
23) controls the blow motor (20) and the electric blower (4) to stop based on the change in the output signal level.

In addition, the remote switch (14) can be used to select “strong” or “medium”.
If one of the "low" modes is selected, the sensor (26) and the floor contact switch (27) will stop operating, and only the electric blower (4) will be switched to the selected "strong" mode.
Operate in either "medium" or "weak" mode.

[Problem to be solved by the invention] Since conventional vacuum cleaners are configured as described above, the sensor only operates when set to "auto" mode, and the problem is that the sensor cannot be used effectively. Moreover, in the past, each sensor required a signal line and a power line, which caused the problem of complicated wiring.

This invention was made to solve the above-mentioned problems, and aims to provide a vacuum cleaner that can effectively utilize sensors and the like even in modes other than the "auto" mode, and has simplified wiring.

[Means for Solving the Problems] The vacuum cleaner according to the present invention includes a hose portion connected to the vacuum cleaner body, a hand portion provided on the hose portion for selecting an operation mode, and a hand portion provided at the tip of the hose portion. The installed brush part,
A sensor installed in the brush section that detects the type of floor surface, etc.
A rotating brush driven by a motor installed in the brush part, a full-wave/half-wave converter installed in the hand part that converts the waveform of the power supplied to the brush part into full wave/half wave, and control means for controlling the full-wave and half-wave converter by inputting a signal from the sensor provided therein; therefore, the control means turns on/off the motor by the full-wave and half-wave of the power supplied to the blank section.
It is characterized by performing OFF control.

Further, the hand portion and the brush portion may be connected by three electric wires that feed power from the hand portion to the blunt portion and transmit signals from the brush portion to the hand portion.

[Function] The vacuum cleaner according to the present invention detects the type of floor surface etc. by a sensor provided in the brush portion, inputs a signal from the sensor to a control means provided in the hose portion via an electric wire, The full-wave and half-wave converter is controlled by the control means based on the signal from the sensor, and the full-wave and half-wave converter converts the waveform of the power supplied to the brush section into full wave or half wave, and then supplies the waveform to the brush section. [Embodiment] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

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

Electric power from the AC power source (3) is supplied to the remote part (13) via electric wires (50c) and (50d) built into the hose (12). A transformer (51) that converts the voltage of the supplied power into a predetermined value is connected to (50d).

A rectifier circuit (52) is connected to the transformer (51), and the output of the rectifier circuit (52) is connected to a local CPU as a control means for controlling the operation of the remote part (13).
(53) is connected to Vcc, and the rectifier circuit (52)
The output of is also connected to the electric wire (58a).

Furthermore, the output terminal 0UTI of the CPU (53) at hand drives a triac (56) as a full-wave and half-wave converter arranged in series to the electric wire (50d) to completely convert the current waveform from the power supply (3). Driver circuit (5
7) is connected.

The handheld CPU (53) has an "auto" mode switch (32), an on/off switch (33), and an "auto" mode LED (34) as a display section.

On LED (35), r high, medium, low mode switch (36), (37), (38),
“Strong,” “Medium,” and “Weak” J LEDs (39) that display the selected “Strong,” “Medium,” and “Weak” modes;
(40).

(41), and an “off” switch (42) that stops the operation.
) are connected.

Then, the electric power transformed into full wave/half wave from the remote part (13) is sent to the electric wire (5) attached to the suction vibrator (17).
8a), (58b) to the blank section (18), and the electric wires (58a), (58b).
58b) includes a rectifier circuit (59) that rectifies the supplied power.
) and a pressure reducing resistor (60) are connected in series.

Further, the electric wires (58a) and (58b) are provided with a full-wave and half-wave detector (61) that detects the waveform (full wave or half wave) of the supplied power, and a brush motor that drives the rotating swing (21). (20) are connected in parallel, and a triac (62) controlled by the output of the full-wave and half-wave detector (61) is connected in series to the brush motor (20).

Further, the current rectified by the rectifier circuit (59) is supplied to the full-wave and half-wave detection section (61) and the sensor section (26), and the sensor section (26) is connected to the signal line (62a).
It is connected to the analog input terminal of the local CPU (53) via the wire and to the output of the rectifier circuit (52) via the electric wire (58a), thereby omitting wiring.

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

Furthermore, a light emitting diode (66), a phototransistor (
71) A sensor (72) that detects the sliding of the brush part (18) is configured by a slit disk or the like, and a part of the floor surface detection means is configured by a light emitting diode (67) and a phototransistor (69). A sensor (73) is configured.

Then, as shown in FIG. 3, when the optical path of the sensor (73) is opened, the phototransistor (69) is ONL,
Since this path does not include any resistance, a high output (H) close to the power supply voltage can be obtained regardless of other paths.

Therefore, when the optical path of the sensor (73) is in the blocked state, opening/blocking of the optical path of the sensor (72) causes the resistance (68
), (70) is obtained.

When the phototransistor (71) is ON, the current flowing through the resistor (70) increases, and the resistor (68) and (
The output (M) is obtained by the voltage division ratio with the resistor (70), and when the phototransistor (71) is off, the resistor (6
The output (L, ) is obtained by the partial pressure ratio of 8) and (70), and the type of floor surface is determined from this.

Next, the operation of this embodiment will be explained.

When the vacuum cleaner is connected to a power plug or outlet, the local CPU (53) presets a built-in timer to a predetermined time and sets the mode flag that stores the type of switch input to the "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 a signal line.

Furthermore, when the main body CPU detects mode data input from the serial data receiving terminal, it decodes the content of the data, and if the content of the data indicates the "off" mode, it sets the operation flag to "off" operation. Then, response data indicating that the data was successfully received is returned.

After transmitting the response data, "off" operation is performed.

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

Then, the local 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) switches the connected "auto" mode switch (32) and on/off switch (3).
3), rHigh J "Medium""Low" mode switch (
36), (37), (38), the "off" switch (42) is scanned to determine the presence or absence of switch input.

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

After the power is turned on, if there is no key input, the "off" mode data will be transmitted again.

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

Then, the main body CPU that receives the “weak” mode data,
Set the operation flag to "weak", send back a response, and perform "weak" operation.

Then, the response data is divided into signal lines and sent to the local CPU (53
) is input to the serial data reception terminal.

Furthermore, the local CPU (53) confirms 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 local CPU (53) receives the signal from the "auto" mode switch (32), determines the type of floor surface and the sliding of the brush part (18) based on the signal from the sensor part (26),
If the surface is a floor or carpet, the triac (56) is driven by the driver (57) to make the waveform of the power supplied to the brush section (18) a full wave, and "auto" mode data is transmitted. .

Furthermore, when the main body CPU detects mode data input from the serial data receiving terminal, it decodes the data contents, and if the data contents are "auto" mode,
The operation flag is set to "auto" operation, and then response data is sent back indicating that the data has been successfully received.

Then, after sending the response data, it operates in "auto" mode, that is, it sucks with a suction force that corresponds to the type of floor surface (carpet).

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

Then, the local CPU (53) confirms the received response data and turns on the "auto" mode LED (34) corresponding to the "auto" mode.

The waveform of the supplied power is measured by a full-wave and half-wave detector (61
), and in the case of full wave, triac (62)
Then, the brush motor (20) is driven (see Figure 4), and the brush motor (20) causes the rotating blank (
21) Or rotate.

When the CPU (53) at hand determines that the area is between the floor and the ox or board, the driver (57) drives the triac (56) to change the waveform of the power supplied to the brush section (18) into a half wave. and lights up the "auto" mode LED (34) corresponding to the "auto" mode.

The waveform of the supplied power is measured by a full-wave and half-wave detector (61
), and in the case of half wave, triac (62)
is in a non-conductive state, the brush motor (20) is not driven (see FIG. 4), the rotating brush (21) does not rotate, and the electric blower (4) draws suction with a suction force corresponding to the space between the tatami mats or boards.

Note that when the "on" mode is instructed by the on/off switch (33), the brush motor (20) continues to drive until the on/off switch (33) is turned off. On this occasion,
The ON LED (35) lights up.

[Effects of the Invention] As explained above, according to the present invention, the hand part and the blank part are connected by three electric wires that feed power from the hand part to the brush part and transmit signals from the brush part to the hand part. Therefore, the wiring can be simplified by sharing a portion of the signal line and the power line. In addition, the full-wave/half-wave converter is controlled based on the signal from the sensor that detects the type of floor surface, etc., to convert the waveform of the supplied power into full-wave or half-wave, and the full-wave/half-wave waveform of the power supplied to the brush section is controlled. Since the motor is configured to be ON/OFF controlled by waves, the sensor can be operated even in modes other than "auto" mode, and the sensor can be used effectively.

[Brief explanation of drawings]

Fig. 1 is an electric circuit diagram of a vacuum cleaner according to an embodiment of the present invention, Fig. 2 is an electric circuit diagram showing the sensor section, Fig. 3 is a diagram showing the output of the sensor section, and Fig. 4 is a diagram of the brush motor. An operation time chart, FIG. 5 is a schematic diagram showing the configuration of a conventional vacuum cleaner, and FIG. 6 is a schematic diagram showing the configuration of a plan part of the conventional vacuum cleaner. In the figure, (2) is the main body, (12) is the hose, and (13) is the main body.
) is the remote part, (18) is the plan part, (20) is the brush motor, (21) is the rotating brush, (26) is the sensor part, (53) is the local CPU, (56) is the triac, (
58a) and (58b) are electric wires, and (62a) is a signal line. Note that the same symbols in the figures indicate the same or equivalent parts.

Claims (2)

[Claims] (1) A hose part connected to the vacuum cleaner body, a hand part provided on the hose part for selecting the operating mode, a brush part provided at the tip of the hose part, and a floor part provided on the brush part. In a vacuum cleaner equipped with a sensor that detects the type of surface, etc., and a rotating brush driven by a motor disposed in the brush section, the waveform of the power supplied to the brush section provided at the hand section is set to full wave. It is equipped with a full-wave half-wave converter that converts into a half-wave, and a control means that is provided at the hand and inputs a signal from a sensor to control the full-wave and half-wave converter, and the control means is connected to the brush section. The motor is turned on/off by the full wave and half wave of the supplied power.
A vacuum cleaner characterized by performing OFF control. (2) The electricity according to claim (1), characterized in that the hand part and the brush part are connected by three electric wires that feed power from the hand part to the brush part and transmit signals from the brush part to the hand part. Vacuum cleaner.