JPH04244124A - Mode-sensing device for suction cleaner - Google Patents

Abstract

PURPOSE:To obtain the title device, which can sense a tick-punching mode by a cheap means, without needing to provide a special sensor. CONSTITUTION:The title device has connection terminals 54 provided on a suction cleaner main body 12, a definite resistance 55 connected between the connection terminals 54, signal-inputting terminals 51 provided on a control part 15 near at hand, and a mode-determining means 17a connected to the signal-inputting terminal 51. When the signal-inputting terminals 51 are connected to the connection terminals 54, a tick-punching mode is determined by the mode- determining means 17a since a voltage level reaches a specified value by the definite resistance 55 connected between the connection terminals 54.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a mode detection device for a vacuum cleaner used in general households.

0002

2. Description of the Related Art FIG. 8 is a cross-sectional view showing a conventional vacuum cleaner, in which the vacuum cleaner (41) has a blower motor supplied with power from a commercial power supply inside the main body (12). An exhaust port is provided in the main body (12) on the exhaust side of the blower motor.

[0003]The main body (12) has an intake port (42).
is opened, and the proximal end of a flexible hose (43) is connected to the intake port (42).

[0004] A hand control section (15) is provided at the tip of the hose (43), and an extension pipe (44) is communicated with the hand control section (15). A brush portion (1) is provided at the tip.

Next, the operation will be explained.

When performing a tick punch to kill inhaled pests, the extension pipe (
44) and connect the hand control section (15) to the tick punch connection port (not shown) on the main body, thereby forming a circulation air path.

At this time, the hand control section (15) contacts the microswitch provided at the connection port for the tick punch and turns it on, thereby entering the tick punch mode.

Then, when the blower motor is operated, the air circulates only within the circulation air path, so the temperature inside the circulation air path rises due to the heat of the blower motor, and when the temperature reaches a predetermined temperature, the mites die. When the temperature inside the circulating air passage rises to a predetermined temperature or higher according to the temperature detecting means provided in the air blower, the blower motor is stopped and the tick punch mode is ended.

[0009]

[Problems to be Solved by the Invention] The conventional vacuum cleaner mode detection device is constructed as described above, and the hand control section (15) contacts the microswitch provided at the connection port for the tick punch. Since the tick punch mode was determined by turning it on, a microswitch had to be used, which resulted in an increase in cost.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a mode detection device for a vacuum cleaner that can detect the tick punch mode using inexpensive means.

[0011]

[Means for Solving the Problems] A mode detection device for a vacuum cleaner according to the present invention includes a vacuum cleaner main body incorporating a blower motor that generates suction force, a hand portion connected to the vacuum cleaner main body, and a hand portion. a brush section connected to the vacuum cleaner body, a connection terminal provided on the vacuum cleaner body, a predetermined resistor connected to the connection terminal, a signal input terminal provided on the hand section, and a mode determination means connected to the signal input terminal. It is equipped with. Therefore,
The mode determination means is characterized in that, when the connection terminal is connected to the signal input terminal, the tick punch mode is determined by the voltage level reaching a predetermined value at a predetermined resistor connected to the connection terminal. .

0012

[Operation] In the vacuum cleaner mode detection device of the present invention, when the signal input terminal provided on the hand portion is connected to the connection terminal provided on the vacuum cleaner body, a predetermined resistance connected to the connection terminal is detected. When the voltage level reaches a predetermined value, the mode determining means determines the tick punch mode, and a blower motor that generates suction force built into the cleaner body is driven to circulate the air only in the circulating air path.

[0013]

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

As shown in FIG. 2, the vacuum cleaner (41) has a blower motor (8) within the main body (12) that is supplied with power from a commercial power source, and the exhaust side of the blower motor (8) An exhaust port (46) is provided in the main body (12).

A dust collection chamber (47) is formed upstream of the blower motor (8), and a paper pack (48) is housed in the dust collection chamber (47).

Further, the paper pack (48) is connected to an air intake port (43) provided in the main body (12).
43) is connected to the base end of a flexible hose (44).

A hand control section (15) is provided at the tip of the hose (44), and a CPU (17) and a temperature detection device (thermistor) (50) are provided on the hand control section (15). ing.

As shown in FIG. 1, the vacuum cleaner is equipped with a blower motor (8) whose input power is variable in the main body (12), and the blower motor (8) is connected to the voltage of the commercial power supply (13). Power is supplied by a triac (14) as a power supply control element that controls the voltage to a predetermined voltage.

[0019]The hand control unit (15) is
It is equipped with a constant voltage power supply circuit (16) that converts the voltage of power from an AC power supply (13) into a predetermined value, and power is supplied from the constant voltage power supply circuit (16) to a microcomputer and the like.

Furthermore, the hand control section (15) includes a CPU (17) having a mode determination section (17a) for determining the operation mode and a signal processing section (17b).
The CPU (17) includes a BCR drive circuit (18) that controls the triac (14), a display (19), and a switch (
20), a BCR drive circuit (22) that controls a triac (21) as a power supply control element that controls the voltage to the brush portion (1) to a predetermined voltage, and a terminal a (51) as a signal input terminal are connected. (See Figure 5)
.

Terminal b (51) is connected to terminal b (51).
2) is connected to a sensor (23) that detects connection/disconnection of the brush part (1), and there is a 220 ohm between the connection point of terminal a (51) and CPU (17) and ground. A resistor (53) is connected.

[0022] Furthermore, the brush part (1) is equipped with a triac (
A brush motor (21) whose power is controlled by a brush motor (21)
4) is located.

Furthermore, the main body (12) has a terminal c (54) which is connected to the terminal a (51) in the tick punch mode.
A 50 ohm resistor (55) is connected to the terminal c (54).

On the other hand, as shown in detail in FIG.
One front wheel (29) and two rear wheels (30) are provided, and one of the rear wheels (30) is equipped with a brush part (1) by detecting the rotation of the wheel (30). Sensor (23) that detects connection/disconnection and movement of the brush part (1)
is provided.

[0025] Furthermore, a brush motor (24) is disposed in the brush portion (1), and a power brush (31)
is rotatably supported, and a belt (32) is wound around the shaft of the power brush (31) and brush motor (24), so that the driving force of the brush motor (24) is transferred to the power brush (24). 31).

Furthermore, as shown in FIG. 4(a), the sensor (23) has a rotating shaft (34) rotatably supported by a bearing (33) in the groove (28a) of the brush body (28).
A wheel (30) that rotates in contact with the floor surface is fixed to the rotating shaft (34).

[0027]The slit disc (see FIG. 4B) has a plurality of light shielding plates (35a) at one end of the rotating shaft (34).
35) is fixed, facing the slit disk (35) and turned on by the light shielding plate (35a) of the slit disk (35).
Alternatively, a transmissive optical sensor (36) that is turned off is arranged.

Further, as shown in FIG. 6, the sensor (23) includes a photocoupler consisting of a light emitting diode (56) and a phototransistor (57), a resistor R1 (58),
R2 (59), R3 (60), R4 (61), R5 (6
2), consists of transistors Q1 (63) and Q2 (64), and while the light emitting diode (56) emits light and the phototransistor (57) receives light, the transistor Q
1 (63) is in the ON state, and the resistor (53) has 1
A current of 0 mA flows, and when the phototransistor (57) is not receiving light, a current of 5 mA flows through the resistor (53).

Next, the operation of this embodiment will be explained.

(I) Brush connection mode When the brush part (1) is connected to the hand control part (15), the brush part (1) comes into contact with the cleaning surface and the user moves the brush part (1). When the wheel (30) is rotated, the wheel (30) rotates.

At this time, terminal b (52) and terminal a (51)
While the phototransistor (57) receives light through the slit of the slit disk (35), a 10 mA current flows through the resistor (53), which causes a voltage of 2.2 volts to flow to the CPU (17). When the light is supplied and the light is blocked by the light shielding plate, a current of 5 mA flows through the resistor (53), and a voltage of 1.1 volts is supplied, resulting in a pulse signal as shown in FIG.

[0032]The CPU that receives this pulse signal
The mode determination unit (17a) in (17) determines that it is the brush connection mode.

At this time, the signal processing section (1
7b) processes the pulse signal and controls the blower motor (8) and brush motor (24) regardless of the input voltage level.
to drive and control.

(II) Brush non-connection mode When the brush part (1) is not connected to the hand control part (15), the terminal a (51) and the terminal b (52) are separated, and the terminal a ( 51) input becomes 0 volts (see Figure 7)
, the CPU (17) determines that the brush part is not connected, that is, the gap nozzle is used, or the brush part (1) is removed and used, etc., due to 0 volts at the terminal a (51), and the blower motor (8
) to drive and control.

(III) Tick Punch Mode When performing a tick punch, remove the extension pipe (44) from the hand control section (15) and connect the hand control section (15) to the tick punch connection port (65) on the main body. , thereby forming a circulating air path (see FIG. 2).

Then, terminal a (51) becomes terminal c (54)
and connect the CPU (17) with 5 volts x resistance (53
)/(Resistance(53)+Resistance(55))=5×220/(
220+50) = 4.0740740 In other words, a voltage of about 4 volts is input (see Figure 7), and C
The PU (17) determines that it is in tick punch mode.

Then, the blower motor (8) starts,
Since the air circulates only within the circulation air path, the temperature within the circulation air path rises due to the heat from the blower motor (8), and when the temperature reaches a predetermined temperature, the mites die.

Furthermore, when the predetermined temperature is reached, the CPU (17
) stops the blower motor (8) and exits the tick punch mode.

(IV) If a metal object is caught in the short-circuit mode terminal a (51), the power supply voltage (5
V) is supplied as is to the CPU (17) (see Figure 7).
, the CPU (17) determines that a short circuit has occurred, and notifies the display (19) that a short circuit accident has occurred.

[0040]

Effects of the Invention As explained above, according to the present invention, when the signal input terminal provided on the hand portion is connected to the connection terminal provided on the vacuum cleaner body, the predetermined signal input terminal connected to the connection terminal When the voltage level reaches a predetermined value at the resistor, the mode determining means determines the tick punch mode, and the blower motor that generates suction force built into the vacuum cleaner body is driven to circulate only within the circulation air path. With this configuration, a special microswitch for detecting the tick punch mode is not required, and costs can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing the configuration of a vacuum cleaner according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating the operation of tick punch mode according to an embodiment of the present invention.

FIG. 3 is a sectional view showing the configuration of a brush portion according to an embodiment of the present invention.

FIG. 4 is a sectional view showing the configuration of a sensor according to an embodiment of the present invention, in which (a) shows the entire sensor, and (b) shows a slit disk.

FIG. 5 is a diagram showing the appearance of a hand control unit according to an embodiment of the present invention.

FIG. 6 is a circuit diagram showing the configuration of a sensor according to an embodiment of the present invention.

FIG. 7 is a diagram showing voltages in each mode of the present invention.

FIG. 8 is an external view showing a conventional vacuum cleaner.

[Explanation of symbols]

1 Brush part 8 Blower motor 12 Main body 15 Hand control section 17a Mode determination means 23 Sensor 51 Terminal a 54 Terminal c 55 Resistance

Claims (1)

[Claims] Claim 1: A drive control device for a vacuum cleaner, comprising: a vacuum cleaner body incorporating a blower motor that generates suction power; a hand portion connected to the vacuum cleaner body; and a brush portion connected to the hand portion. , a connection terminal provided on the vacuum cleaner body,
A predetermined resistor connected to the connection terminal, a signal input terminal provided at the hand, and a mode determination means connected to the signal input terminal, the mode determination means having the connection terminal connected to the signal input terminal. 1. A mode detection device for a vacuum cleaner, characterized in that when the voltage level reaches a predetermined value at a predetermined resistor connected to a connection terminal, the tick punch mode is determined.