JPH06105777A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To use a battery as a power supply for a hose at-hand control circuit and inform the user of the battery replacement timing. CONSTITUTION:A hose at-hand control circuit to issue an operation command signal is installed in a hose at-hand operation part, and a battery 1 is used as a power supply for it. A display means is provided to display the operating condition by turning an operation command switch 3 in the hose at-hand control circuit. When exhausted, the battery 1 as power supply for the hose at-hand control circuit drops its voltage, but because the display element 9 goes out of light emission before the operating limit voltage of an integrated circuit 2 is reached, the user can know the battery replacement timing in advance.

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, and more particularly to a vacuum cleaner having a hose hand control circuit and controlling the rotation speed or power consumption of an electric blower built in the cleaner main body according to its operation command signal.

[0002]

2. Description of the Related Art In conventional vacuum cleaners, a hose hand control circuit and a vacuum cleaner body control circuit are connected through wires inside the hose, which results in a heavy hose, which is very disadvantageous in terms of usability. .

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to eliminate these drawbacks of the prior art by using a battery as the power source of the hose hand control circuit and notifying when the battery should be replaced, so that the electric cleaning is excellent in usability. To provide a machine.

[0004]

In order to achieve the above object, the present invention uses a battery as a power source for a hose hand control circuit, and provides display means for displaying an operating state of the hose hand control circuit, and adjusts the display means. It was made possible.

[0005]

The hose hand control circuit operates in response to each operation of the operation command switch. The voltage of the integrated circuit is lowered by discharge of the battery due to the operation of the integrated circuit, and when the integrated circuit becomes below the operating limit voltage of the integrated circuit. However, since the display means does not work in advance, it is possible to inform the user of the battery replacement time.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. FIG. 1 shows a hose hand control circuit. The battery 1 is set outside the hose hand control circuit, and power is supplied to the hose hand control circuit by a lead wire or the like. When the integrated circuit 2 is supplied with power from the power supply, it enters a standby state, and when the switch 3 is pressed to determine acceptance, the oscillation circuit composed of the oscillator 4 and the capacitors 5 and 6 immediately starts oscillating. At this time integrated circuit 2
Is a signal corresponding to the pressed switch (hereinafter the transmission code)
Is output from the REM terminal of the integrated circuit 2 to drive the infrared light emitting circuit 7 to emit infrared light to the outside of the hose hand control circuit. At the same time, the integrated circuit 2 outputs a Low signal from the LMP terminal to drive the display light emitting circuit 8 to cause the display element 9 to emit light and notify that the integrated circuit 2 has operated. The diode 10 is provided to protect the hose hand control circuit when the battery 1 is connected in reverse polarity. The capacitors 11 and 12 are provided to reduce an instantaneous voltage drop when the infrared light emitting circuit is driven. The jumpers 13 and 14 can switch and select two types of transmission codes by connecting either one.

FIG. 2 shows a vacuum cleaner body control circuit. The cleaner main body control circuit is built in the cleaner main body 15 shown in FIG. 3, and the infrared rays radiated from the hose hand control circuit are shown in FIG.
To drive the waveform shaping circuit 17,
The transmission code is input to the INT1 terminal of the control unit, and the rotation speed or the power consumption of the electric blower 19 is controlled according to the transmission code. At this time, the control state is displayed on the display circuit 20, and a switch 21 is provided on the cleaner main body control circuit to restart the control of the rotation speed or power consumption of the electric blower 19 every time the switch is pressed. At that time, the display is also changed according to the control state of the electric blower 19.

The operation of the control circuit of the electric vacuum cleaner according to the embodiment of the present invention having the above construction will be described.

In FIG. 1, the integrated circuit 2 drives the display light emitting circuit 8 to drive the display element 9 at the same time when the transmission code is output. The diode 22 and the resistor 2 are connected in series with the display element 9.
When 3 is connected and its resistance value is set to an appropriate value, the forward current If and forward voltage Vf1 flowing through the display element 8 and Vf2 generated across the diode can be adjusted. In this embodiment, two dry batteries are used as the power source, and the integrated circuit 2 becomes inoperable when the consumption voltage of the dry batteries decreases. Integrated circuit 2
Assuming that the voltage of the battery when V is inoperable is Vmin, when Vf1 = Vmin, the display element 9 does not emit light when the integrated circuit 2 is inoperable. As described above, by connecting the diode 22 to the display element 9 in series, the display element 9 does not emit light when the battery voltage is near Vf1 + Vf2. The integrated circuit 2 can operate even in this state, and the function of the hose hand control circuit is not lost. Therefore, it is possible to easily know the replacement time of the battery 1 before the hose hand control circuit stops functioning due to a decrease in the power supply voltage.

Since a battery is used in this embodiment, there is a possibility that the battery may be connected in reverse polarity. By providing the diode 10, when the battery is connected in reverse polarity, the battery and the diode 10 are connected in series, and the reverse voltage applied to the integrated circuit 2 can be suppressed to the forward voltage Vf3 of the diode 10. This prevents damage to the hose control circuit.

In this embodiment, two infrared light emitting elements are provided. When the hose hand control circuit is set in the hose hand control section 24 shown in FIGS. 3 and 4, one is arranged in the cleaner body direction and the other is arranged in the ceiling direction. To place. The infrared light emitting element 25 shown in FIG. 4 arranged in the direction of the cleaner body has a relatively small power consumption because the distance to the infrared light receiving portion is limited by the length of the hose 26 shown in FIG. Further, by using an element having a relatively wide directivity angle, it is possible to widen the reception range of the main body cleaner. However, when operating a normal vacuum cleaner, the user between the hose hand operation part 24 and the vacuum cleaner body 15 often becomes a shield. Further, it is expected that the cleaner body 15 cannot receive the transmission code when the operation direction of the cleaner is changed. Therefore, by arranging the other infrared light emitting element 27 in the ceiling direction and reflecting infrared rays by the ceiling, it is possible to bypass the shield as shown in FIG. 5, and the infrared light emitting element 25 is moved in the direction of the cleaner body. You can receive the transmission code even if you are not facing. Since infrared rays are diffusely reflected when hitting the ceiling,
By making the infrared light emitting element 27 an element having a relatively narrow directional angle, it is possible to prevent unnecessary irregular reflection of infrared rays. As described above, by using two types of infrared light emitting elements having different directivity angles and disposing them in the cleaner main body direction and the ceiling direction, the cleaner main body 15 has a very high probability that the transmission code from the hose hand operation part 24 is very high. Can be received at.

In this embodiment, when the vacuum cleaner is operated, the infrared light emitting element 27 is arranged so as to be substantially perpendicular to the ceiling.
It is fixed with a fixing part 28. By fixing and mounting with the fixed component 28, it is possible to stabilize the component from the time of inserting the component to the step of soldering during board assembly. In addition, when the substrate after assembly is conveyed, it is possible to prevent the components from falling down or bending due to impact.

In this embodiment, by using a battery as the power source of the hose hand control circuit, it is possible to eliminate the power supply line from the cleaner main body control circuit passing through the inside of the hose. As a result, it is possible to reduce the weight of the hose alone and obtain a light operation feeling.

Besides the present embodiment, it is not necessary to limit the number of jumper sen 13, 13 for switching the transmission code to two, and the number can be increased or decreased as necessary.

In the above embodiment, if a plurality of diodes are connected in series with the display element 9, the notification of the battery replacement time can be further advanced. Further, by using an element having a low forward voltage Vf, it is possible to finely adjust the notification timing.

[0016]

As described above, according to the present invention, the power source of the hose hand control circuit can be a battery, and a cleaner having a light operation feeling and excellent in usability can be obtained.

[Brief description of drawings]

FIG. 1 is a hose hand circuit diagram.

FIG. 2 is a control circuit diagram of a cleaner body.

FIG. 3 is an overall configuration diagram of a vacuum cleaner.

FIG. 4 is a partial cross-sectional view of a hose hand operation unit.

FIG. 5 shows an example of the positional relationship between the vacuum cleaner and the user in a normal use state.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Battery, 9 ... Display element, 22 ... Diode, 23 ... Resistor, 25, 27 ... Infrared light emitting element, 7 ... Infrared light emitting circuit, 8 ... Display light emitting circuit, 16 ... Light receiving element.

Claims (1)

[Claims] 1. A hose having a control circuit for outputting an operation command signal in the hose hand operation section, an electric blower built in a cleaner body case, and a vacuum cleaner for controlling the rotation speed or power consumption of the electric blower. In a vacuum cleaner having a built-in main body control circuit, the hose hand control circuit is driven by a battery, and the cleaner main body is operated by a driving command signal generated by operating a driving command switch of the hose hand control circuit. The control circuit controls the rotation speed or power consumption of the electric blower and its state display control, and the hose hand control circuit displays the operating state of the hose hand control circuit according to each operation of the operation command switch. An electric vacuum cleaner, characterized in that it is provided with display means for